ARIZONA MICROTEK, INC.
AZ88923
High-Speed Limiting Post Amplifier
FEATURES
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•
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Up to 2.5Gbps operation
Differential PECL Inputs
Differential PECL Outputs
Open Drain TTL/CMOS LOS Output
TTL/CMOS Enable Input
High-Speed SiGe Process
PACKAGE AVAILABILITY
PACKAGE
TSSOP 10
1
2
3
4
PART NUMBER
AZ88923U
MARKING
AZ88
923
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 AZ88923 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 AZ88923 contains a programmable loss of signal detect function to determine when the input signal has
been lost. This information can be used with the /EN input pin to disable the output under LOS conditions. The
detect threshold can be set with a resistor divider between V
CC
and V
REF
. The LOS 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
LOS
LVL
LOS
V
REF
V
CC
GND
FUNCTION
Differential Inputs
PECL Outputs
Output Enable
LOS Threshold
LOS Output
Reference Voltage Output
Positive Voltage
Ground
BLOCK DIAGRAM
D
IN
/D
IN
D
OUT
/D
OUT
/EN
V
REF
/EN
1
10
V
CC
D
IN
2
9
D
OUT
TSSOP-10
/D
IN
3
8
/D
OUT
V
REF
LOS
LVL
4
7
LOS
LOS
LVL
LOS
5
6
GND
PINOUT ASSIGNMENT
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
AZM [ ARIZONA MICROTEK, INC ]
