4-1
Semiconductor
[ /Title (HI1176)
/Subject (8-Bit, 20 MSPS, Flash A/D Converter)
/Author ()
/Keywords (Harris Semiconductor, Video, Image Scan-
ner, PC Video capture, Set top box, Clamp, Internal Ref-
erence)
/Creator ()
/DOCINFO pdfmark
[ /PageMode /UseOutlines
/DOCVIEW pdfmark
October 1998
HI1176
8-Bit, 20 MSPS, Flash A/D Converter
Features
Resolution
0.5 LSB (DNL) . . . . . . . . . . . . . . . . . . . 8-Bit
Maximum Sampling Frequency . . . . . . . . . . . 20 MSPS
Low Power Consumption at 20 MSPS (Typ)
(Reference Current Excluded) . . . . . . . . . . . . . . .60mW
Built-In Sync Clamp Function
Built-In Monostable Multivibrator for Clamp Pulse
Generation
Built-In Sync Pulse Polarity Selection Function
Clamp Pulse Direct Input Possible
Built-In Clamp ON/OFF Function
Built-In Reference Voltage Self Bias Circuit
Input CMOS Compatible
Three-State TTL Compatible Output
Single +5V Power Supply
Low Input Capacitance (Typ) . . . . . . . . . . . . . . . . 11pF
Reference Impedance (Typ) . . . . . . . . . . . . . . . . . 300
Direct Replacement for the Sony CXD1176
Description
The HI1176 is an 8-bit, CMOS analog-to-digital converter for
video use that features a sync clamp function. The adoption
of a 2-step parallel method realizes low power consumption
and a maximum conversion speed of 20 MSPS. For higher
sampling rates, refer to the pin-for-pin compatible HI1179
data sheet, AnswerFAX document number 3666.
Applications
Video Digitizing
Image Scanners
Low Cost High Speed Data Acquisition Systems
Multimedia
Pinout
HI1176
(MQFP)
TOP VIEW
Ordering Information
PART
NUMBER
TEMP. RANGE
(
o
C)
PACKAGE
PKG. NO.
HI1176JCQ
-40 to 85
32 Ld MQFP
Q32.7x7-S
HI1176-EV
25
Evaluation Board
1
2
3
4
5
6
7
8
(LSB) D0
D1
D2
D3
D4
D5
D6
(MSB) D7
V
RB
AV
SS
AV
SS
V
IN
AV
DD
AV
DD
V
RT
V
RTS
NC
DV
SS
OE
CLE
DV
SS
CCP
V
REF
V
RBS
32 31 30 29 28 27 26 25
24
23
22
21
20
19
18
17
9 10 11 12 13 14 15 16
NC
DV
DD
DV
DD
CLK
SEL
SYNC
PW
AV
DD
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
Harris Corporation 1998
File Number
3582.5
NOT RECOMMENDED FOR NEW DESIGNS
See HI1179
4-3
Absolute Maximum Ratings
Thermal Information
Supply Voltage, V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Reference Voltage, V
RT
, V
RB
. . . . . . . . . V
DD
+ 0.5V to V
SS
- 0.5V
Analog Input Voltage, V
IN
. . . . . . . . . . . . . V
DD
+ 0.5V to V
SS
- 0.5V
Digital Input Voltage, CLK. . . . . . . . . . . . . V
DD
+ 0.5V to V
SS
- 0.5V
Digital Output Voltage, V
OH
, V
OL
. . . . . . . V
DD
+ 0.5V to V
SS
- 0.5V
Operating Conditions
(Note 1)
Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . . -40
o
C to 85
o
C
Supply Voltage
AV
DD
, AV
SS
, DV
DD
, DV
SS
. . . . . . . . . . . . . . . +4.75V to +5.25V
|DGND-AGND| . . . . . . . . . . . . . . . . . . . . . . . . . . . .0mV to 100mV
Reference Input Voltage
V
RB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V and Above
V
RT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8V and Below
Analog Input Voltage, V
IN
. . . . . . . . . V
RB
to V
RT
(1.8V
P-P
to AV
DD
)
Clock Pulse Width
t
PW1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25ns (Min)
t
PW0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25ns (Min)
Thermal Resistance (Typical, Note 1)
JA
(
o
C/W)
MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .
122
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300
o
C
(Lead Tips Only)
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of
the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
f
C
= 20 MSPS, V
DD
= +5V, V
RB
= 0.5V, V
RT
= 2.5V, T
A
= 25
o
C (Note 1)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SYSTEM PERFORMANCE
Offset Voltage
E
OT
-60
-40
-20
mV
E
OB
+20
+40
+60
mV
Integral Non-Linearity, INL
f
C
= 20 MSPS, V
IN
= 0.5V to 2.5V
-
0.5
1.3
LSB
Differential Non-Linearity, DNL
f
C
= 20 MSPS, V
IN
= 0.5V to 2.5V
-
0.3
0.5
LSB
DYNAMIC CHARACTERISTICS
Signal to Noise Ratio, SINAD
f
S
= 20MHz, f
IN
= 1MHz
-
46
-
dB
f
S
= 20MHz, f
IN
= 3.58MHz
-
46
-
dB
Maximum Conversion Speed, f
C
V
IN
= 0.5V to 2.5V, f
IN
= 1kHz Ramp
20
35
-
MSPS
Minimum Conversion Speed
-
-
0.5
MSPS
Differential Gain Error, DG
NTSC 40 IRE Mod Ramp, f
C
= 14.3 MSPS
-
1.0
-
%
Differential Phase Error, DP
-
0.5
-
Degree
Aperture Jitter, t
AJ
-
30
-
ps
Sampling Delay, t
DS
-
4
-
ns
ANALOG INPUTS
Analog Input Bandwidth (-1dB), BW
-
18
-
MHz
Analog Input Capacitance, C
IN
V
IN
= 1.5V + 0.07V
RMS
-
11
-
pF
RMS Signal
Signal-To -Noise + Distortion Ratio, SINAD
----------------------------------------------------------------------------------------------------------------
HI1176
4-4
REFERENCE INPUT
Reference Pin Current, I
REF
4.5
6.6
8.7
mA
Reference Resistance (V
RT
to V
RB
), R
REF
230
300
450
INTERNAL VOLTAGE REFERENCES
Self Bias
V
RB
Short V
RB
and V
RBS
, Short V
RT
and V
RTS
0.48
0.52
0.56
V
V
RT
- V
RB
1.96
2.08
2.22
V
DIGITAL INPUTS
Digital Input Voltage
V
IH
4.0
-
-
V
V
IL
-
-
1.0
V
Digital Input Current
I
IH
V
DD
= Max
V
IH
= V
DD
-
-
5
A
I
IL
V
IL
= 0V
-
-
5
A
DIGITAL OUTPUTS
Digital Output Current
I
OH
OE = V
SS
, V
DD
= Min
V
OH
= V
DD
-0.5V
-1.1
-
-
mA
I
OL
V
OL
= 0.4V
3.7
-
-
mA
Digital Output Current
I
OZH
OE = V
DD
, V
DD
= Max
V
OH
= V
DD
-
-
16
A
I
OZL
V
OL
= 0V
-
-
16
A
TIMING CHARACTERISTICS
Output Data Delay, t
DL
-
18
30
ns
POWER SUPPLY CHARACTERISTIC
Supply Current, I
DD
f
C
= 20 MSPS, NTSC Ramp Wave Input
-
12
18
mA
CLAMP CHARACTERISTICS
Clamp Offset Voltage, E
OC
V
IN
= DC, PWS = 3
s
V
REF
= 0.5V
0
+20
+40
mV
V
REF
= 2.5V
-50
-30
-10
mV
Clamp Pulse Width (Sync Pin Input), t
CPW
C = 100pF, R = 130k
on Pin 15
1.75
2.75
3.75
s
Clamp Pulse Delay, t
CPD
-
25
-
ns
NOTE:
1. Electrical specifications guaranteed only under the stated operating conditions.
Electrical Specifications
f
C
= 20 MSPS, V
DD
= +5V, V
RB
= 0.5V, V
RT
= 2.5V, T
A
= 25
o
C (Note 1) (Continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
HI1176
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