02044-DSH-001-B
June 2003
MC2044C
Postamplifier/Quantizer for Applications
from 200 to 622 Mbps
Data Sheet
Information provided in this Data Sheet is subject to change without notice.
Mindspeed TechnologiesTM, Proprietary and Confidential
02044-DSH-001-B
Page 2 of 19
MC2044C
Postamplifier/Quantizer for Applications from 200 Mbps to 622 Mbps
Information provided in this Data Sheet is subject to change without notice.
Mindspeed TechnologiesTM, Proprietary and Confidential
T
ABLE
OF
C
ONTENTS
Features ...........................................................................................................................................................3
Applications ......................................................................................................................................................3
Connections ......................................................................................................................................................3
Description ........................................................................................................................................................3
Table 1 Ordering Information ............................................................................................................................3
Top Level Diagram ...........................................................................................................................................3
Table 2 Pin Description ....................................................................................................................................4
Table 3 Absolute Maximum Ratings .................................................................................................................5
Table 4 Recommended Operating Conditions .................................................................................................5
Table 5 DC Characteristics ...............................................................................................................................5
Table 6 AC Characteristics ...............................................................................................................................6
Typical Performance Curves ............................................................................................................................7
Assert Deassert Level ......................................................................................................................................7
Functional Block Diagram .................................................................................................................................8
Functional Description ......................................................................................................................................8
Data Input .........................................................................................................................................................8
DC Offset Compensation ..................................................................................................................................8
Signal Level Detector .......................................................................................................................................8
Setting Signal Detect Level ..............................................................................................................................8
Typical Applications Circuit ...............................................................................................................................9
Applications Information ...................................................................................................................................9
JAM Function ....................................................................................................................................................9
PECL Termination ............................................................................................................................................9
Table 7 Termination Resistor Values ...............................................................................................................10
AC-Coupled PECL Termination.........................................................................................................................10
DC-Coupled PECL Termination .......................................................................................................................10
Alternative PECL Termination ..........................................................................................................................11
Power supply de-coupling and optimizing sensitivity ........................................................................................11
Differences between die and packaged parts ..................................................................................................11
Bare Die Information .........................................................................................................................................12
Table 8 Pad Centers .........................................................................................................................................12
BCC++16L Package Outline ..........................................................................................................................13
SOIC16 Package Information ...........................................................................................................................14
QSOP16 Package Information .........................................................................................................................15
TSOP20 Package Information ..........................................................................................................................16
Package Dimensions ........................................................................................................................................17
Table 9 SOIC16 Dimensions ............................................................................................................................17
Table 10 QSOP16 Dimensions ........................................................................................................................17
Disclaimer .........................................................................................................................................................18
Contact Information ...........................................................................................................................................19
02044-DSH-001-B
Page 3 of 19
MC2044C
Postamplifier/Quantizer for Applications from 200 Mbps to 622 Mbps
Information provided in this Data Sheet is subject to change w/o notice.
Mindspeed TechnologiesTM, Proprietary and Confidential
F
EATURES
q
Low-cost IC, fabricated in advanced sub-micron BiCMOS
process
q
2
m
V typical input sensitivity
q
Wide range programmable input-signal level detect
q
Fully differential design
q
Supports 3.3 V and 5 V supplies
q
Available in die form, SOIC16, QSOP16 and
BCC++16L packages
q
Complimentary PECL data outputs
q
Complimentary CMOS signal detect logic outputs
A
PPLICATIONS
q
SDH/SONET/ATM
q
Fast Ethernet
q
FDDI
q
ESCON
q
Add/drop multiplexers
C
ONNECTIONS
D
ESCRIPTION
The MC2044C is an integrated, high gain limiting amplifier
intended for fiber optic communication to 622 Mbps.
Normally placed following the photodetector &
transimpedance amplifier, the post-amplifier provides the
necessary gain to give PECL compatible logic outputs.
The MC2044C also includes a programmable signal-level
detector, allowing the user to set thresholds at which the
logic outputs are enabled. The signal detect function has
typically 2.25 dB (optical) of hysteresis which prevents
chatter at low input levels.
A JAM function, which turns off the output when no signal
is present, is provided by externally connecting the ST
output to the JAM input.
T
ABLE
1
O
RDERING
I
NFORMATION
T
OP
L
EVEL
D
IAGRAM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
D
IN
J
A
M
S
T
S
T
GNDE
D
OUT
D
OUT
V
CCE
C
A
Z
+
C
A
Z
-
V
S
E
T
C
F
V
CCA
N
C
GNDA
V
CCA
D
IN
MC2044C
Date Code
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GNDA
JAM
DIN
DIN
CAZ +
AZ
C
-
VCCA
CF
NC
GNDE
ST
VCCE
ST
DOUT
DOUT
VSET
Fig. 1
SOIC16
QSOP16
Package
BCC++16L
Package
Mindspeed
MC2044C
Date Code
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
NC
GNDA
NC
NC
GNDE
GNDE
ST
JAM
V SET
D OUT
DOUT
ST
CF
DIN
DIN
CAZ-
CAZ+
VCCE
VCCE
VCCA
TSSOP20
Package
Part Number
Pin Package
MC2044CWPDIE
Waffle pack
MC2044CWAFERSPBG
Expanded wafer on a grip ring
MC2044CS16
SOIC16
MC2044CQ16
QSOP16
Contact Sales Representative
TSSOP20
MC2044CB16
BCC++16L
MC2044C-BEVM
BCC16 evaluation board
MC2044C-EVM
QSOP evaluation board
GNDE
GNDE
GNDA
ST
JAM
Level
Detector
GNDA
CAZ+
CAZ -
VSET
VCCE
VCCE
DOUT
ST
CF
VSET
DIN
DIN
DOUT
VCCA
VCCA
Fig. 2
02044-DSH-001-B
Page 4 of 19
MC2044C
Postamplifier/Quantizer for Applications from 200 Mbps to 622 Mbps
Information provided in this Data Sheet is subject to change w/o notice.
Mindspeed TechnologiesTM, Proprietary and Confidential
T
ABLE
2
P
IN
D
ESCRIPTION
Note:
Pin 17 (center pin) on the BCC++16L package should be connected to GndA.
Name
QSOP16
SOIC16
TSSOP20
BCC++16L
Function
C
AZ
-
1
1
15
Auto-zero capacitor pin. Connect C
AZ
between this pin and C
AZ
+
C
AZ
+
2
2
16
Auto-zero capacitor pin. Connect C
AZ
between this pin and C
AZ
-
GNDA
3
4
-
Analog section ground pin. Connect to most negative supply.Must be at
the same potential as GNDE pin
D
IN
4
5
2
Differential data input
D
IN
5
6
3
Inverse differential data input
V
CCA
6
7
1, 4
Analog section power pin. Connect to most positive supply.Must be at the
same potential as V
CCE
pin
C
F
7
8
5
Level-detect filter capacitor pin. Connect a capacitor between this pin and
V
CCA
JAM
8
11
6
CMOS and ECL compatible input controlling output buffers (D
OUT
and
D
OUT
pins). On chip pull down defaults to low. Can be driven from CMOS
ST
9
12
7
Logical inverse of ST pin. Maybe connected to JAM pin to enable
automatic squelch function to operate CMOS output
ST
10
13
8
Input signal level status. This CMOS output is LOW when the input signal
is below the threshold set by the users
GNDE
11
14, 15
10
Digital section ground pin, Connect to the most negative supply. Must be
the same potential as GNDA pin
D
OUT
12
16
11
Differential data output. Logical inverse of D
OUT
pin. JAM high forces
D
OUT
High
D
OUT
13
17
12
Differential data output. PECL compatible differential data output. JAM
high forces D
OUT
LOW
V
CCE
14
18, 19
13
Digital output section power pin. Connect the most positive supply. Must
be at same potential as V
CCA
pin
NC
15
3, 9, 10
9
Not connected
V
SET
16
20
14
Input threshold-level setting circuit. Connect to GND via a resistor
02044-DSH-001-B
Page 5 of 19
MC2044C
Postamplifier/Quantizer for Applications from 200 Mbps to 622 Mbps
Information provided in this Data Sheet is subject to change w/o notice.
Mindspeed TechnologiesTM, Proprietary and Confidential
T
ABLE
3
A
BSOLUTE
M
AXIMUM
R
ATINGS
These are the absolute maximum ratings at or beyond which the IC can be expected to fail or be damaged. Reliable
operation at these extremes for any length of time is not implied.
T
ABLE
4
R
ECOMMENDED
O
PERATING
C
ONDITIONS
T
ABLE
5
DC C
HARACTERISTICS
(V
CC
= +3.3V
10%, T
A
= -40C to +85C, unless otherwise noted)
Dice are designed to operate over an ambient temperature range of -40C to +85C (T
A
) range, but are tested and
guaranteed only at T
A
= +25C.
Note 1: V
CC
= +3.3 V or +5 V.
Note 2: Load is 50
to V
CC
- 2 V.
Symbol
Parameter
Rating
Units
V
CC
Power supply (V
CC
- GND)
6
V
T
A
Operating ambient
-40 to +85
C
T
STG
Storage temperature
-65 to +150
C
Symbol
Parameter
Rating
Units
V
CC
Power supply (V
CC
-GND)
3.0 to 5.5
V
T
A
Operating ambient
-40 to +85
C
Symbol
Parameter
Min.
Typ.
Max.
Units
I
CC
Supply current (excluding output current)
(1)
-
20
35
mA
V
OS
Effective input offset voltage
-
-
50
V
R
INJ
JAM input resistance to ground
-
10
-
k
R
IN
Differential Input resistance
-
20
-
k
V
POH
PECL
(2)
output HIGH
V
CC
- 1.025
-
V
CC
- 0.880
V
V
POL
PECL
(2)
output LOW
V
CC
- 1.810
-
V
CC
- 1.620
V
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