September 1999
PRELIMINARY
ML6426
High Bandwidth Triple Video Filters with Buffered
Outputs for RGB or YUV
1
GENERAL DESCRIPTION
The ML6426 are a family of triple video filters with
buffered outputs. There are several versions of the
ML6426, each with different passband cut-off frequencies
of 6.7MHz, 12MHz, 24MHz, 30MHz, 36MHz, and
48MHz. Each channel contains a 4
th
-order Butterworth
lowpass reconstruction video filter. The filter is optimized
for minimum overshoot and flat group delay and
guaranteed differential gain and phase at the outputs of
the integrated cable drivers.
All input signals from DACs are AC coupled into the
ML6426. All channels have DC restore circuitry to clamp
the DC input levels during video H-sync, using an output
feedback clamp. An external H-sync signal is required for
this purpose.
All outputs must be AC coupled into their loads. Each
output can drive 2V
P-P
into a 150
W load. All channels
have a gain of 2 (6dB) at 1V
P-P
input levels.
FEATURES
s
5V 10% operation
s
RGB/YUV filters for ATSC Digital Television VESA
Standard
s
2:1 Mux Inputs for multiple RGB/YUV inputs
s
Triple Reconstruction Filter options for 6.7, 12, 24, 30,
36, and 48MHz to handle various line rates
s
Multiple ML6426 outputs can be paralleled to drive
RGB/YUV outputs at different frequencies for various
line rates by means of Disable/Enable pin.
s
6dB drivers and sync tip clamps for DC restore
s
DC restore with minimal tilt
s
0.4% differential gain on all channels
0.4 differential phase on all channels
0.8% total harmonic distortion on all channels
s
2kV ESD protection
BLOCK DIAGRAM
RINA/YINA
2
RINB/YINB
BINA/VINA
8
BINB/VINB
9
A/B MUX
GINA/UINA
6
GIN/UINB
7
ROUT/YOUT
13
GOUT/UOUT
11
BOUT/VOUT
10
4th-ORDER
FILTER A
4th-ORDER
FILTER B
4th-ORDER
FILTER C
MUX
MUX
MUX
2
2
2
TRANSCONDUCTANCE
ERROR AMP
TRANSCONDUCTANCE
ERROR AMP
TRANSCONDUCTANCE
ERROR AMP
1
SYNCIN
16
GNDO
14
DISABLE
15
VCCO
12
VCC
4
GND
3
5
+
+
+
0.5V
0.5V
0.5V
ML6426-1
ML6426-2
ML6426-3
ML6426-4
ML6426-5
ML6426-6
Filter A
6.7MHz
12MHz
24MHz
30MHz
36MHz
48MHz
Filter B
6.7MHz
12MHz
24MHz
30MHz
36MHz
48MHz
Filter C
6.7MHz
12MHz
24MHz
30MHz
36MHz
48MHz
ML6426
2
November, 1999
PIN CONFIGURATION
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
A/B MUX
Logic input pin to select between
Bank <A> and Bank <B> video inputs.
This pin is internally pulled high.
2
R
IN
A/Y
IN
A
Unfiltered analog R- or Y-channel
input for Bank <A>. Sync must be
provided at SYNC IN pin.
3
GND
Analog ground
4
V
CC
Analog 5V supply
5
R
IN
B/Y
IN
B
Unfiltered analog R- or Y-channel
input for Bank <B>. Sync must be
provided at SYNC IN pin.
6
G
IN
A/U
IN
A Unfiltered analog G- or U-channel
input for Bank <A>. Sync must be
provided at SYNC IN pin.
7
G
IN
B/U
IN
B Unfiltered analog G- or U-channel
input for Bank <B>. Sync must be
provided at SYNC IN pin.
PIN
NAME
FUNCTION
8
B
IN
A/V
IN
A Unfiltered analog B- or V-channel
input for Bank <A>. Sync must be
provided at SYNC IN pin.
9
B
IN
B/V
IN
B
Unfiltered analog B- or V-channel
input for Bank <B>. Sync must be
provided at SYNC IN pin.
10
B
OUT
Analog B or V-channel output
11
G
OUT
Analog G or U-channel output
12
V
CCO
5V power supply for output buffers
13
R
OUT
Analog R or Y-channel output
14
GNDO
Analog ground
15
DISABLE
Disable/Enable pin. Turns the chip off
when logic high. Internally pulled low.
16
SYNC IN
Input for an external H-sync logic
signal for filter channels. CMOS
level input. Active High.
ML6426
16-Pin Narrow SOIC (S16N)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TOP VIEW
A/B MUX
RINA/YINA
GND
VCC
RINB/YINB
GINA/UINA
GINB/UINB
BINA/VINA
SYNC IN
DISABLE
GNDO
ROUT/YOUT
VCCO
GOUT/UOUT
BOUT/VOUT
BINB/VINB
ML6426
3
November, 1999
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
V
CC ................................................................................
0.3V to 7V
Junction Temperature .............................................. 150C
ESD ..................................................................... >2000V
Analog and Digital I/O ........... GND 0.3V to V
CC
+ 0.3V
Storage Temperature Range ..................... 65C to 150C
Lead Temperature (Soldering, 10 sec) ..................... 260C
Thermal Resistance (
q
JA
) .................................... 100C/W
OPERATING CONDITIONS
Temperature Range ....................................... 0C to 70C
V
CC
Range ................................................... 4.5V to 5.5V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
CC
= 5V10%, T
A
= Operating Temperature Range (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
I
CC
Supply Current
No Load (V
CC
=5.5V)
52
80
mA
A
V
Low Frequency Gain (R, G, B)
V
IN
= 100mV
P-P
at 100KHz
5.34
6.0
6.65
dB
V
OUT
Output Level during Sync (R, G, B,)
DURING SYNC
0.7
0.9
1.1
V
Output Capability
RL = 150W, AC-coupled@1MHz
2
VP-P
t
CLAMP
Clamp Response Time
Settled to Within 10mV, C
IN
= 0.1F
10
ms
V
I
Input Signal Dynamic Range (R, G, B,)
AC Coupled
1.4
V
P-P
OS
Peak Overshoot (R, G, B,)
2V
P-P
Output Pulse
4.3
%
C
L
Output Load Capacitance (R, G, B,)
All Outputs
35
pF
Output Load Drive Capability, per Pin
One Load is 150
W
2
loads
(YUV or RGB Outputs)
dG
Differential Gain (R, G, B,)
All Outputs at f
C
/2
0.4
%
d
f
Differential Phase (R, G, B,)
All Outputs at f
C
/2
0.4
T
HD
Output Distortion (R, G, B,)
V
OUT
= 2V
P-P
at 1 MHz
0.8
%
PSRR
PSRR (R, G, B,)
0.5V
P-P
(100kHz) at V
CC
35
dB
I
SC
Output Short Circuit Current (R, G, B,)
Note 2
120
mA
V
IH
Input Voltage Logic High
DISABLE, SYNC IN
2.5
V
V
IL
Input Voltage Logic Low
DISABLE, SYNC IN
1.0
V
T
MUX
Input Mux
A/B Mux
2
s
Data Valid
Pin Valid
Time
High or Low
6.7MHz FILTER: ML6426-1
f
1dB
1dB Bandwidth Flatness (R, G, B,)
25C
4.0
4.8
MHz
f
c
3dB Bandwidth Flatness (R, G, B,)
25C
6.0
6.7
7.3
MHz
f
0.8fc
0.8 x f
C
Attenuation
1.5
dB
f
SB
StopBand Rejection (All Channels
4 f
C
)
f
IN
4 f
C
, Note 3
38
42
dB
NOISE
Output Noise (R, G, B,)
Fullband
1.0
mV
RMS
X
TALK
Crosstalk
Input of 0.5V
P-P
at 1 MHz
55
dB
Between any two Channels
X
TALK
A/B MUX Crosstalk
Input of 0.5V
P-P
at 3.58/4.43MHz
54
dB
ML6426
4
November, 1999
ELECTRICAL CHARACTERISTICS
(Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
6.7MHZ FILTER: ML6426-1 (continued)
T
PD
Group Delay (R, G, B,)
100kHz
70
ns
DT
PD
Group Delay Deviation from Flatness
to 3.58MHz
4.0
ns
(R, G, B,)
to 4.43MHz
8.0
ns
to 10MHz
9
ns
2MHz FILTER: ML6426-2
f
1dB
1dB Bandwidth Flatness (R, G, B,)
25C
7.8
9.2
MHz
f
c
3dB Bandwidth Flatness (R, G, B,)
25C
10.8
12
13.2
MHz
f
0.8fc
0.8 x f
C
Attenuation
1.2
dB
f
SB
StopBand Rejection (All Channels
4 f
C
)
f
IN
4 f
C
, Note 3
40
dB
NOISE
Output Noise (R, G, B,)
Fullband
1
mV
RMS
X
TALK
Crosstalk
Input of 0.5V
P-P
at 1 MHz
55
dB
Between any two Channels
X
TALK
A/B MUX Crosstalk
Input of 0.5V
P-P
at 3.58/4.43MHz
54
dB
T
PD
Group Delay (R, G, B,)
100kHz
40
ns
DT
PD
Group Delay Deviation from Flatness
to 3.58MHz
1
ns
(R, G, B,)
to 4.43MHz
1
ns
to 10MHz
7
ns
24MHz FILTER: ML6426-3
f
1dB
1dB Bandwidth Flatness (R, G, B,)
25C
13.6
16
MHz
f
c
3dB Bandwidth Flatness (R, G, B,)
25C
21.6
24
26.4
MHz
f
0.8fc
0.8 x f
C
Attenuation
1.7
dB
f
SB
StopBand Rejection (All Channels
4 f
C
)
f
IN
4 f
C
, Note 3
40
dB
NOISE
Output Noise (R, G, B,)
Fullband
1.0
mV
RMS
X
TALK
Crosstalk
Input of 0.5V
P-P
at 1 MHz
55
dB
Between any two Channels
X
TALK
A/B MUX Crosstalk
Input of 0.5V
P-P
at 3.58/4.43MHz
-54
dB
T
PD
Group Delay (R, G, B,)
100kHz
22
ns
DT
PD
Group Delay Deviation from Flatness
to 3.58MHz
1
ns
(R, G, B,)
to 4.43MHz
1
ns
to 10MHz
2
ns
30MHz FILTER: ML6426-4
f
1dB
1dB Bandwidth Flatness (R, G, B,)
25C
15.3
18
MHz
f
c
3dB Bandwidth Flatness (R, G, B,)
25C
27
30
33
MHz
f
0.8fc
0.8 x f
C
Attenuation
1.7
dB
f
SB
StopBand Rejection (All Channels
4 f
C
)
f
IN
4 f
C
, Note 3
40
dB
NOISE
Output Noise (R, G, B,)
Fullband
1.0
mV
RMS
ML6426
5
November, 1999
Note 1. Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions.
Note 2. Sustained short circuit protection limited to 10 seconds.
Note 3. 38dB is based on tester noise limits.
ELECTRICAL CHARACTERISTICS
(Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
30MHz FILTER: ML6426-4 (Continued)
X
TALK
Crosstalk
Input of 0.5V
P-P
at 1 MHz
55
dB
Between any two Channels
X
TALK
A/B MUX Crosstalk
Input of 0.5V
P-P
at 3.58/4.43MHz
-54
dB
T
PD
Group Delay (R, G, B,)
100kHz
18
ns
DT
PD
Group Delay Deviation from Flatness
to 10MHz
0.5
ns
(R, G, B,)
to 27MHz
2
ns
36MHz FILTER: ML6426-5
f
1dB
1dB Bandwidth Flatness (R, G, B,)
25C
17
20
MHz
f
c
3dB Bandwidth Flatness (R, G, B,)
25C
32.4
36
39.6
MHz
f
0.8fc
0.8 x f
C
Attenuation
2
dB
f
SB
StopBand Rejection (All Channels
4 f
C
)
f
IN
4 f
C
, Note 3
40
dB
NOISE
Output Noise (R, G, B,)
Fullband
1.0
mV
RMS
X
TALK
Crosstalk
Input of 0.5V
P-P
at 1 MHz
55
dB
Between any two Channels
X
TALK
A/B MUX Crosstalk
Input of 0.5V
P-P
at 3.58/4.43MHz
54
dB
T
PD
Group Delay (R, G, B,)
100kHz
17
ns
DT
PD
Group Delay Deviation from Flatness
to 10MHz
0.5
ns
(R, G, B,)
to 30MHz
4
ns
48MHz FILTER: ML6426-6
f
1dB
1dB Bandwidth Flatness (R, G, B,)
25C
25.5
30
MHz
f
c
3dB Bandwidth Flatness (R, G, B,)
25C
43.2
48
52.8
MHz
f
0.8fc
0.8 x f
C
Attenuation
1.2
dB
f
SB
StopBand Rejection (All Channels
4 f
C
)
f
IN
4 f
C
, Note 3
40
dB
NOISE
Output Noise (R, G, B,)
Fullband
1.0
mV
RMS
X
TALK
Crosstalk
Input of 0.5V
P-P
at 1 MHz
55
dB
Between any two Channels
X
TALK
A/B MUX Crosstalk
Input of 0.5V
P-P
at 3.58/4.43MHz
54
dB
T
PD
Group Delay (R, G, B,)
100kHz
16
ns
DT
PD
Group Delay Deviation from Flatness
to 10MHz
0.5
ns
(R, G, B,)
to 40MHz
2
ns
ML6426
6
November, 1999
FUNCTIONAL DESCRIPTION
The ML6426 is a triple monolithic continuous time video
filter designed for reconstructing video signals from an
YUV/RGB video D/A source. The ML6426 is intended for
use in AC coupled input and output applications.
The filters approximate a 4th-order Butterworth
characteristic with an optimization toward low overshoot
and flat group delay. All outputs are capable of driving
2V
P-P
into AC coupled 150
W video loads, with up to 35pF
of load capacitance. All outputs are capable of driving a
75
W load at 1V
P-P
.
All channels are clamped during sync to establish the
appropriate output voltage swing range (DC restore). Thus
the input coupling capacitors do not behave according to
the conventional RC time constant. In most applications,
the ML6426's input coupling capacitors are only 0.1F.
Figure 1. Typical Application Schematic
An external CMOS compatible H
SYNC
pulse is required
which is Active High on the SYNC IN Pin. See Figure 2.
During sync, the feedback clamp sources/sinks current to
restore the DC level. The net result is that the average
input current is zero. Any change in the input coupling
capacitors' value will linearly affect the clamp response
times.
Each channel is essentially tilt-free. Each input is
clamped by a feedback amp which responds to the output
during sync.
The ML6426 is robust and stable under all stated load and
input conditions. Bypassing both V
CC
pins directly to
ground ensures this performance.
RIN
5V
5V
R
G
0.1F
220F 75
GIN
0.1F
220F 75
B
220F 75
BIN
SYNC IN
0.1F
RINA/YINA
2
RINB/YINB
BINA/VINA
8
BINB/VINB
9
A/B MUX
GINA/UINA
6
GINB/UINB
7
ROUT/YOUT
13
GOUT/UOUT
11
BOUT/VOUT
10
4th-ORDER
FILTER A
4th-ORDER
FILTER B
4th-ORDER
FILTER C
MUX
MUX
MUX
2
2
2
TRANSCONDUCTANCE
ERROR AMP
TRANSCONDUCTANCE
ERROR AMP
TRANSCONDUCTANCE
ERROR AMP
1
SYNCIN
16
GNDO
14
DISABLE
15
VCCO
12
VCC
4
GND
3
5
+
+
+
0.5V
0.5V
0.5V
ACTIVE HIGH
Figure 2. SYNC IN Pulse Width
VIL = 1.0V
50% x VSYNC IN
VIH = 2.5V
PWMIN = 2S
ML6426
7
November, 1999
ST
AND
ARD
PIXELS
VERTICAL
LINES
PICTURE
TRANSMISSION
RA
TE
(Note 2)
DISPLA
Y
REFRESH
RA
TE
(Note 2)
APPRO
XIMA
TE
SAMPLE
CLOCK
APPRO
XIMA
TE
HORIZONT
AL
RA
TE
APPRO
XIMA
TE
RECONSTRUCTION
FIL
TER CUT
OFF
MICRO LINEAR
F
I
L
TER T
O
USE
(Note 3)
SMPTE
1920
1080
60I
60Hz
35.3KHz
81MHz
40.5MHz
ML6426-6
274M
1920
1080
30P, 24P
60Hz
70.6KHz
162MHz
81MHz
N/A
SMPTE
1280
720
60P, 30P,
60Hz
47.1KHz
60MHz
30MHz
ML6426-5
24P
ML6426-4
704
480
(Note 1)
60I
60Hz
15.7KHz
13.5MHz
6.75MHz
ML6426-1
704
480
60P, 30P,
60Hz
31KHz
27MHz
13.5MHz
ML6426-2
24P
ML6426-4
640
480
(Note 1)
60I
60Hz
15.7KHz
24.5MHz
12MHz
ML6426-2
640
480
60P, 30P,
60Hz
31KHz
12.27MHz
6MHz
ML6426-1
24P
P=progressive scan, I=interlaced scan, na = not available
Note 1: NTSC display rates, can be fed directly into NTSC encoder (set top box)
Note 2: 60 Hz also includes 59.94Hz
Note 3: custom frequencies ranging 3 to 6MHz can be special cut to order
Table 2: Choosing the Correct Reconstruction Filter and Video Amplifier for TV Applications, ML6426 options
TYPICAL APPLICATIONS
RECONSTRUCTION FILTER SELECTION FOR HDTV AND
VGA SIGNAL FILTERING
The filtering requirements for HDTV and VGA standards
vary depending on the resolution of the image to be
displayed, and its refresh rate. The actual refresh rate of
the display is not necessarily the same as the transmission
rate of the frames of images. Some formats use a frame
rate of 30Hz, but the display of those formats cannot be
scanned onto the CRT at 30Hz. Excessive large area
flicker would result. Such kinds of flicker can be seen on
a PAL display with its brightness set high. To avoid this,
the video will need to be stored in a frame buffer. This
buffer already exists in the MPEG decoder of HDTV
systems, so there is no cost penalty. The buffer is read out
at twice the rate as the frame rate for 30Hz systems, thus
getting us a refresh rate of 60Hz. Similar things are done
for the 24Hz frame rate formats to boost them to a 60Hz
refresh rate.
PIXELS
VERTICAL LINES
ASPECT RATIO
PICTURE TRANSMISSION RATE
1920
1080
16:9
60I, 30P, 24P
1280
720
16:9
60P, 30P, 24P
704
480
16:9 and 4:3
60P, 60I, 30P,24P
640
480
4:3
60P, 60I, 30P,24P
P=progressive scan, I=interlaced scan
Table 1: HDTV / Advanced TV Applications: (From Table 10.3 from ATSC document A54)
ML6426
8
November, 1999
TYPICAL APPLICATIONS
(Continued)
Pixel clock rates for the output D/A converters can be
roughly determined from the Table 1. Don't forget that the
deflection system of a CRT display needs retrace time for
the vertical and horizontal.
This retrace time can vary from one design of an HDTV
set to another, as it only involves tradeoffs between the
frame buffer in the MPEG decoder and the CRT deflection
system. Allowing for 10% retrace time for the vertical and
20% for the horizontal, the appropriate Reconstruction
Filter is summarized in Table 2.
For VGA or RGB monitors, the following resolutions can
use the corresponding Reconstruction Filter and Video
Amplifier as shown in Table 3.
Figures 4, 5, and 6 show system diagrams when the
ML6426 provides a good solution. Figure 7 provides a
more detailed description for advanced TV applications
using various resolutions for legacy video, SDTV, and
HDTV.
640
480
VGA
60Hz
31.5kHz
25.175MHz
12.5MHz
ML6426-2
VGA
72Hz
37.9kHz
31.5MHz
15.5MHz
ML6426-3
VGA
75Hz
37.5kHz
31.5MHz
15.5MHz
ML6426-3
800
600
SVGA
56Hz
35.1kHz
36MHz
18MHz
ML6426-3
SVGA
60Hz
37.9kHz
40MHz
20MHz
ML6426-3
SVGA
72Hz
48.1kHz
50MHz
25MHz
ML6426-3
SVGA
75Hz
46.9kHz
49.5MHz
25MHz
ML6426-3
1024
768
XGA
43Hz
35.5kHz
44.9MHz
23MHz
ML6426-3
Interlaced
XGA
60Hz
37.9kHz
65MHz
33MHz
ML6426-5
XGA
70Hz
56.5kHz
75MHz
37.5MHz
ML6426-5
XGA
75Hz
60kHz
78.75MHz
39.4MHz
ML6426-6
1280
1024
SXGA
75Hz
80kHz
135MHz
68MHz
na
SXGA
60Hz
113MHz
57MHz
na
1600
1200
UXGA
60Hz
166MHz
83MHz
na
N/A = not available
Table 3: Choosing the Correct Reconstruction Filter and Video Amplifier for TV Applications, ML6426 options
VERTICAL LINES
PIXELS
NAME
REFRESH RA
TE
(prog except noted)
HORIZONT
AL RA
TE
RECONSTRUCTION
FIL
TER CUT
OFF
SAMPLE CLOCK
MICRO LINEAR
F
I
L
TER T
O
USE
USING THE ML6426 IN MULTIPLE RESOLUTIONS
Several ML6426 devices can be used in parallel to
construct a selectable filter selection block ranging from
frequencies between 6.7 MHz to 50MHz. Each ML6426
can be individually controlled via the disable pin. In a
parallel configuration, as shown in Figure 3 and 7, several
ML6426 devices can be used and selected via general
purpose I/O or other logic to perform the proper
reconstruction filtering for the resolution of choice. This
configuration allows for a minimum of bill of materials
and reduces cost. Micro Linears ML6426 EVAL Kit
demonstrates multi-resolution designs. Furthermore, since
the ML6426 pin-out is identical for all the options, the
filters can be interchanged. This allows for ease of product
migration to integrate newer resolutions to filter and drive
various DAC outputs at different sampling frequencies.
ML6426
9
November, 1999
Figure 3. ATSC Digital Television Application
YIN/RIN
UIN/GIN
5V
13
11
10
12 4
14 3
VIN/BIN
15
2
5
6
7
8
9
16
1
13
11
10
12 4
14 3
15
2
5
6
7
8
9
16
1
13
11
10
12 4
14 3
15
2
5
6
7
8
9
16
1
SYNC IN
SELECT
LOGIC
GENERAL
PURPOSE I/O
DISABLE/ENABLE LINES
220F
75
220F
75
220F
75
R/Y
G/U
B/V
0.1F
0.1F
0.1F
ML6426-1
6.7MHz
ML6426-5
36MHz
ML6426-2
12MHz
ML6426
10
November, 1999
Figure 4. Digital TV Receiver or HDTV Decoder Box
Figure 5. PC Graphics/Frame Grabber Editing Card
Figure 6. PC MRI, XRAY, Ultrasound, CT Scan
FROM SAT
OR CABLE
ML6426
U
V
Y
D/A
HDTV
DECODER
AND DISPLAY
PROCESSOR
GRAPHIC
PROCESSOR
MPEG2
TRANSPORT
AND DECODER
DIGITAL TV
FROM
CAMERA
VCR
FROM
DVD-ROM
OR MEMORY
YCrCb
DIGITAL
CV
S-VIDEO
ANALOG
ML6426
U
V
Y
D/A
RGB
VIDEO
DECODER
AND DISPLAY
PROCESSOR
VIDEO
ENCODER
RGB
MONITOR
MRI, XRAY,
ULTRASOUND, CT SCAN
DIGITAL YUV
ANALOG
ML6426
U
V
Y
MEDICAL
IMAGING
D/A
DSP
ML6426
11
November, 1999
Figure 7. Typical Applications Schematic
RINA
RINB
GNA
GNB
BINA
BINB
A/B MUX
SYNC IN
C 29
C 30
C 31
C 32
C 33
C 34
2
5
6
7
8
9
1
16
13
11
10
0.1F
0.1F
0.1F
0.1F
0.1F
0.1F
ROUT
GOUT
BOUT
U3
ML6426-4
DISABLE
GNDO
GND
V
CCO
V
CC
15
14
3
12
4
C6
1F
C14
0.1F
C13
0.1F
C5
1F
R3 47k
RINA
RINB
GNA
GNB
BINA
BINB
A/B MUX
SYNC IN
C 23
C 24
C 25
C 26
C 27
C 28
2
5
6
7
8
9
1
16
13
11
10
0.1F
0.1F
0.1F
0.1F
0.1F
0.1F
ROUT
GOUT
BOUT
U2
ML6426-3
DISABLE
GNDO
GND
V
CCO
V
CC
15
14
3
12
4
C4
1F
C12
0.1F
HYSYNC IN
SW2
C11
0.1F
C3
1F
R2 47k
R10
75
0
1
RINA
RINB
C 17
C 18
2
5
13
11
10
0.1F
0.1F
C 19
C 20
6
7
0.1F
0.1F
C 21
C 22
8
9
1
16
0.1F
0.1F
ROUT
R11
75
R12
75
R13
75
ROUT/YOUT
U1
ML6426-1
DISABLE
GNDO
GND
15
14
3
R1 47k
RINA
RINB
GNA
GNB
BINA
BINB
A/B MUX
SYNC IN
C 35
C 36
C 37
C 38
C 39
C 40
2
5
6
7
8
9
1
16
13
11
10
0.1F
0.1F
0.1F
0.1F
0.1F
0.1F
ROUT
GOUT
BOUT
UX
ML6426-X
DISABLE
GNDO
GND
V
CCO
V
CC
15
14
3
12
4
C8
1F
C16
0.1F
C15
0.1F
C7
1F
R4 47k
BINB/VINB
4TH ORDER
FILTER
GINA
GINB
GOUT
4TH ORDER
FILTER
BINA
BINB
BOUT
4TH ORDER
FILTER
SYNC IN
A/B
MUX
V
CCO
V
CC
12
4
C2
1F
C10
0.1F
C9
0.1F
C1
1F
FB2
5V
GND
GND
FB1
C 41
220F
GOUT/UOUT
C 42
220F
BOUT/VOUT
C 43
220F
2
3
4
1
3
5
7
2
JP1
SWI
4
6
8
R9
75
BINA/VINA
R8
75
GINB/UINB
R7
75
GINA/UINA
R6
75
RINB/YINB
R5
75
RINA/YINA
ML6426
12
November, 1999
Figure 8. Passband Flatness all Outputs
(Normalized) 6.7 MHz, ML6426CS-1
Figure 9. Passband Flatness all Outputs
(Normalized) 12MHz, ML6426CS-2
Figure 10. Passband Flatness all Outputs
(Normalized) 24 MHz, ML6426CS-3
Figure 12. Passband Flatness all Outputs
(Normalized) 36MHz, ML6426CS-5
Figure 13. Passband Flatness all Outputs
(Normalized) 48MHz, ML6426CS-6
Figure 11. Passband Flatness all Outputs
(Normalized) 30 MHz, ML6426CS-4
PERFORMANCE DATA
10
0
10
20
30
40
50
60
70
AMPLITUDE (dB)
FREQUENCY (MHz)
0.01
1
100
0.1
10
AMPLITUDE (dB)
FREQUENCY (MHz)
100k
1M
10M
100M
10
0
10
20
30
40
50
60
70
AMPLITUDE (dB)
FREQUENCY (MHz)
1M
10M
100M
10
0
10
20
30
40
50
60
70
AMPLITUDE (dB)
FREQUENCY (MHz)
1M
10M
100M
10
0
10
20
30
40
50
60
70
10
0
10
20
30
40
50
60
70
AMPLITUDE (dB)
FREQUENCY (Hz)
100k
1M
10M
100M
1G
10
0
10
20
30
40
50
60
70
AMPLITUDE (dB)
FREQUENCY (Hz)
10k
100k
1M
10M
100M
1G
ML6426
13
November, 1999
Figure 14. Frequency Response All Outputs
ML6426-CS-1
Figure 15. Group Delay Deviation of Passband,
All Outputs ML6426CS-1
Figure 16. Group Delay Deviation All band,
All Outputs ML6426CS-1
Figure 17. Frequency Response All Outputs
ML6426CS-2
Figure 18. Group Delay Deviation of Passband,
All Outputs ML6426CS-2
Figure 19. Group Delay Deviation All Band,
All Outputs ML6426CS-2
12
10
8
6
4
2
0
2
4
6
8
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
14
12
10
8
6
4
2
0
2
4
6
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
10
8
6
4
2
0
2
4
6
8
10
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
4
8
10
2
6
3
7
9
1
5
12
10
8
6
4
2
0
2
4
6
8
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
2.8
5.6
7.0
1.4
4.2
2.1
4.9
6.3
0.7
3.5
0
10
20
30
40
50
60
70
80
90
100
AMPLITUDE (dB)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
0
10
20
30
40
50
60
70
80
90
100
AMPLITUDE (dB)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
PERFORMANCE DATA
(Continuied)
ML6426
14
November, 1999
Figure 20. Frequency Response All Outputs
ML6426CS-3
Figure 21. Group Delay Deviation of Passband,
All Outputs ML6426CS-3
Figure 22. Group Delay Dviation All Band,
All Outputs ML6426CS-3
Figure 23. Frequency Response All Outputs
ML6426CS-4
Figure 24. Group Delay Deviation of Passband,
All Outputs ML6426CS-4
Figure 25. Group Delay Deviation All Band,
All Outputs ML6426CS-4
PERFORMANCE DATA
(Continuied)
0
10
20
30
40
50
60
70
80
90
100
AMPLITUDE (dB)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
10
8
6
4
2
0
2
4
6
8
10
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
10
20
25
5
15
7.5
17.5
22.5
2.5
12.5
12
10
8
6
4
2
0
2
4
6
8
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
0
10
20
30
40
50
60
70
80
90
100
AMPLITUDE (dB)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
10
8
6
4
2
0
2
4
6
8
10
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
16
32
40
8
24
12
28
36
4
20
6
4
2
0
2
4
6
8
10
12
14
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
ML6426
15
November, 1999
Figure 26. Frequency Response All Outputs
ML6426-CS-5
Figure 27. Group Delay Deviation of Passand,
All Outputs ML6426CS-5
Figure 28. Group Delay Deviation All band,
All Outputs ML6426CS-5
Figure 29. Frequency Response All Outputs
ML6426CS-6
Figure 30. Group Delay Deviation of Passand,
All Outputs ML6426CS-6
Figure 31. Group Delay Deviation All Band,
All Outputs ML6426CS-6
PERFORMANCE DATA
(Continuied)
0
10
20
30
40
50
60
70
80
90
100
AMPLITUDE (dB)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
0
10
20
30
40
50
60
70
80
90
100
AMPLITUDE (dB)
FREQUENCY (MHz)
0
48
96
120
24
72
36
84
108
12
60
12
10
8
6
4
2
0
2
4
6
8
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
20
40
50
10
30
15
35
45
5
25
10
8
6
4
2
0
2
4
6
8
10
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
20
40
50
10
30
15
35
45
5
25
12
10
8
6
4
2
0
2
4
6
8
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
10
8
6
4
2
0
2
4
6
8
10
GROUP DELA
Y DEVIA
TION (ns)
FREQUENCY (MHz)
0
40
80
100
20
60
30
70
90
10
50
ML6426
16
November, 1999
PHYSICAL DIMENSIONS
SEATING PLANE
0.148 - 0.158
(3.76 - 4.01)
PIN 1 ID
0.228 - 0.244
(5.79 - 6.20)
0.386 - 0.396
(9.80 - 10.06)
0.012 - 0.020
(0.30 - 0.51)
0.050 BSC
(1.27 BSC)
0.015 - 0.035
(0.38 - 0.89)
0.059 - 0.069
(1.49 - 1.75)
0.004 - 0.010
(0.10 - 0.26)
0.055 - 0.061
(1.40 - 1.55)
16
0.006 - 0.010
(0.15 - 0.26)
0 - 8
1
0.017 - 0.027
(0.43 - 0.69)
(4 PLACES)
Package: S16N
16-Pin Narrow SOIC
ML6426
17
November, 1999
ORDERING INFORMATION
PART NUMBER
CUT-OFF FREQUENCY
TEMPERATURE RANGE
PACKAGE
ML6426CS-1
6.7MHz
0C to 70C
16-Pin Narrow SOIC (S16N)
ML6426CS-2
12MHz
0C to 70C
16-Pin Narrow SOIC (S16N)
ML6426CS-3
24MHz
0C to 70C
16-Pin Narrow SOIC (S16N)
ML6426CS-4
30MHz
0C to 70C
16-Pin Narrow SOIC (S16N)
ML6426CS-5
36MHz
0C to 70C
16-Pin Narrow SOIC (S16N)
ML6426CS-6
48MHz
0C to 70C
16-Pin Narrow SOIC (S16N)
ML6426CS-15
15MHz
0C to 70C
16-Pin Narrow SOIC (S16N)
Micro Linear 2000. is a registered trademark of Micro Linear Corporation. All other trademarks are the property of their
respective owners.
Products described herein may be covered by one or more of the following U.S. patents: 4,897,611; 4,964,026; 5,027,116;
5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940; 5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376;
5,652,479; 5,661,427; 5,663,874; 5,672,959; 5,689,167; 5,714,897; 5,717,798; 5,742,151; 5,747,977; 5,754,012; 5,757,174;
5,767,653; 5,777,514; 5,793,168; 5,798,635; 5,804,950; 5,808,455; 5,811,999; 5,818,207; 5,818,669; 5,825,165; 5,825,223;
5,838,723; 5.844,378; 5,844,941. Japan: 2,598,946; 2,619,299; 2,704,176; 2,821,714. Other patents are pending.
Micro Linear makes no representations or warranties with respect to the accuracy, utility, or completeness of the contents
of this publication and reserves the right to make changes to specifications and product descriptions at any time without
notice. No license, express or implied, by estoppel or otherwise, to any patents or other intellectual property rights is granted
by this document. The circuits contained in this document are offered as possible applications only. Particular uses or
applications may invalidate some of the specifications and/or product descriptions contained herein. The customer is urged
to perform its own engineering review before deciding on a particular application. Micro Linear assumes no liability
whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Micro Linear products including
liability or warranties relating to merchantability, fitness for a particular purpose, or infringement of any intellectual property
right. Micro Linear products are not designed for use in medical, life saving, or life sustaining applications.
Micro Linear Corporation
2092 Concourse Drive
San Jose, CA 95131
Tel: (408) 433-5200
Fax: (408) 432-0295
www.microlinear.com
DS6426-01
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