ARIZONA MICROTEK, INC.
AZ88943
High-Speed Limiting Post Amplifier
FEATURES
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PACKAGE AVAILABILITY
Up to 2.5Gbps operation
Differential PECL Inputs
Differential PECL Outputs
Open Drain TTL/CMOS SD Output
TTL/CMOS Enable Input
High-Speed SiGe Process
PACKAGE
TSSOP 10
1
2
3
4
PART NUMBER
AZ88943U
MARKING
AZ88
943
NOTES
1,2,3
DESCRIPTION
Add R1 at end of part number for 7 inch (1K parts), R2 for 13 inch (2.5K
parts) Tape & Reel.
Date code format: “Y” or “YY” for year followed by “WW” for week.
Parts marked JNB for date codes prior to 4WW (prior to 2004).
Date code “YWW” or “YYWW” on underside of part.
The AZ88943 is a limiting post amplifier usable at data rates up to 2.5Gbps. It is ideal for use as a post
amplifier following a transimpedance amplifier.
The AZ88943 contains a programmable signal detect function to determine when the input signal is present.
This information can be used with the /EN input pin to disable the output under loss of signal conditions. The detect
threshold can be set with a resistor divider between V
CC
and V
REF
. The SD output is an open drain compatible with
CMOS and TTL.
The outputs produce standard PECL 100K voltage compensated levels.
PIN DESCRIPTION
PIN
D
IN
, /D
IN
D
OUT
, /D
OUT
/EN
SD
LVL
SD
V
REF
V
CC
GND
FUNCTION
Differential Inputs
PECL Outputs
Output Enable
Signal Detect Threshold
SD Output
Reference Voltage Output
Positive Voltage
Ground
BLOCK DIAGRAM
D
IN
/D
IN
D
OUT
/D
OUT
/EN
PINOUT ASSIGNMENT
/EN
1
10
V
CC
V
REF
D
IN
2
9
D
OUT
TSSOP-10
/D
IN
3
8
/D
OUT
SD
LVL
SD
V
REF
SD
LVL
4
7
SD
5
6
GND
1630 S. STAPLEY DR., SUITE 127
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MESA, ARIZONA 85204
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USA
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(480) 962-5881
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FAX (480) 890-2541
www.azmicrotek.com