ARIZONA MICROTEK, INC.
AZ88923
High-Speed Limiting Post Amplifier
FEATURES
•
•
•
•
•
•
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
•
MESA, ARIZONA 85204
•
USA
•
(480) 962-5881
•
FAX (480) 890-2541
www.azmicrotek.com
AZ88923
Absolute Maximum Ratings are those values beyond which device life may be impaired.
Symbol
V
CC
T
A
T
STG
D
IN
, /D
IN
/EN
LOS
LVL
V
REF
D
OUT
, /D
OUT
Parameter
DC Supply Voltage (Referenced to GND)
Operating Temperature Range (In Free-Air)
Storage Temperature Range
Input Voltage
Input Voltage
Input Voltage
Output Voltage
Output Voltage
Value
4.5
-40 to +85
-65 to +150
0 to V
CC
0 to V
CC
0 to V
CC
V
CC
-2V to V
CC
V
CC
-2V to V
CC
Unit
V
°C
°C
V
V
V
V
V
DC Characteristics
(V
CC
= 3.0V to 3.6V, R
LOAD
= 50Ω to V
CC
-2V)
Symbol
I
EE
V
OH
V
OL
V
IH
V
IL
V
OL
V
REF
I
IH
Characteristic
Power Supply Current
1
Output HIGH Voltage
Output LOW Voltage
/EN Input HIGH
Voltage
/EN Input LOW
Voltage
LOS Output LOW
Voltage
2
Reference Voltage
V
CC
-
1085
V
CC
-
1830
2.0
0.8
0.5
V
CC
-
1.38
V
CC
-
1.26
100
GND+2
V
CC
GND+2
V
CC
-
1.38
-40°C
Min
Max
40
V
CC
-
880
V
CC
-
1555
Min
V
CC
-
1025
V
CC
-
1810
2.0
0.8
0.5
V
CC
-
1.26
100
V
CC
GND+2
V
CC
-
1.38
0°C
Max
40
V
CC
-
880
V
CC
-
1620
Min
V
CC
-
1025
V
CC
-
1810
2.0
0.8
0.5
V
CC
-
1.26
100
V
CC
GND+2
V
CC
-
1.38
25°C
Typ
30
V
CC
-
955
V
CC
-
1705
85°C
Max
40
V
CC
-
880
V
CC
-
1620
Min
V
CC
-
1025
V
CC
-
1810
2.0
0.8
0.5
V
CC
-
1.26
100
V
CC
Max
45
V
CC
-
880
V
CC
-
1620
Unit
mA
mV
mV
mV
mV
V
V
μA
V
/EN Input HIGH
Current
V
CMR
Common Mode Range
1.
No output load.
2.
I
OL
= +2mA.
AC Characteristics
(V
CC
= 3.0V to 3.6V, R
LOAD
= 50Ω to V
CC
-2V)
Symbol
V
ID
t
r
/ t
f
V
OD
HYS
t
OFFL
t
OFFH
t
ONL
V
SR
Characteristic
Input Voltage Range
Rise/Fall Time
Diff
V
ID
=15 mVp-p
Out
V
ID
=5 mVp-p
LOS Hysteresis
LOS Release Time
Minimum Input
LOS Release Time
Maximum Input
LOS Assert Time
LOS Sensitivity Range
-40°C
Min
5
Max
1800
150
Min
5
0°C
Max
1800
150
Min
5
25°C
Typ
85°C
Max
1800
150
Min
5
Max
1800
150
Unit
mV
ps
MVp-p
8
0.5
0.5
0.5
50
5
2
8
0.5
0.5
0.5
50
dB
μs
μs
μs
MVp-p
2
8
0.5
0.5
2
8
0.5
0.5
2
600
200
4.6
0.1
0.1
0.2
5
0.5
50
5
0.5
50
5
November 2006 * REV - 2
www.azmicrotek.com
2
AZ88923
Arizona Microtek, Inc. reserves the right to change circuitry and specifications at any time without prior notice. Arizona Microtek, Inc.
makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Arizona
Microtek, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all
liability, including without limitation special, consequential or incidental damages. Arizona Microtek, Inc. does not convey any license
rights nor the rights of others. Arizona Microtek, Inc. products are not designed, intended or authorized for use as components in systems
intended to support or sustain life, or for any other application in which the failure of the Arizona Microtek, Inc. product could create a
situation where personal injury or death may occur. Should Buyer purchase or use Arizona Microtek, Inc. products for any such
unintended or unauthorized application, Buyer shall indemnify and hold Arizona Microtek, Inc. and its officers, employees, subsidiaries,
affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly
or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Arizona Microtek, Inc. was negligent regarding the design or manufacture of the part.
November 2006 * REV - 2
www.azmicrotek.com
5
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