ARIZONA MICROTEK, INC.
AZ88923
High-Speed Limiting Post Amplifier
FEATURES
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•
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•
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PACKAGE AVAILABILITY
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
TSSOP 10
1
2
3
4
DESCRIPTION
PART NUMBER
AZ88923U
MARKING
NOTES
AZ88
923
1,2,3
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 VCC and VREF. The LOS output is an open drain
compatible with CMOS and TTL.
The outputs produce standard PECL 100K voltage compensated levels.
PIN DESCRIPTION
PIN
DIN, /DIN
DOUT, /DOUT
/EN
LOSLVL
LOS
VREF
VCC
GND
FUNCTION
Differential Inputs
PECL Outputs
Output Enable
LOS Threshold
LOS Output
Reference Voltage Output
Positive Voltage
Ground
/EN
1
10
VCC
DIN
2
9
DOUT
/DIN
3
8
/DOUT
VREF
4
7
LOS
LOSLVL
5
6
GND
BLOCK DIAGRAM
DIN
DOUT
/DIN
/DOUT
/EN
VREF
TSSOP-10
LOSLVL
LOS
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
VCC
TA
TSTG
DIN, /DIN
/EN
LOSLVL
VREF
DOUT, /DOUT
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 VCC
0 to VCC
0 to VCC
VCC-2V to VCC
VCC-2V to VCC
Unit
V
°C
°C
V
V
V
V
V
DC Characteristics (VCC = 3.0V to 3.6V, RLOAD = 50Ω to VCC-2V)
Symbol
Characteristic
-40°C
Min
Power Supply Current1
IEE
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
/EN Input HIGH
Voltage
/EN Input LOW
Voltage
LOS Output LOW
Voltage2
Reference Voltage
VIH
VIL
VOL
VREF
/EN Input HIGH
Current
VCMR
Common Mode Range
1.
No output load.
2.
IOL = +2mA.
0°C
Max
40
VCC880
VCC1555
VCC1085
VCC1830
Min
Max
40
VCC880
VCC1620
VCC1025
VCC1810
Min
VCC1025
VCC1810
25°C
Typ
30
VCC955
VCC1705
85°C
Max
40
VCC880
VCC1620
Min
Max
45
VCC880
VCC1620
VCC1025
VCC1810
Unit
mA
mV
mV
2.0
2.0
2.0
2.0
mV
0.8
0.8
0.8
0.8
mV
0.5
VCC1.38
VCC1.26
GND+2
VCC
IIH
0.5
VCC1.38
VCC1.26
GND+2
VCC
100
0.5
0.5
V
VCC1.38
VCC1.26
V
100
μA
VCC
V
VCC1.38
VCC1.26
GND+2
VCC
GND+2
Max
1800
150
Min
5
Max
1800
150
600
200
4.6
8
2
8
dB
100
100
AC Characteristics (VCC = 3.0V to 3.6V, RLOAD = 50Ω to VCC-2V)
Symbol
VID
tr / t f
VOD
HYS
tOFFL
tOFFH
tONL
VSR
Characteristic
Input Voltage Range
Rise/Fall Time
Diff
VID=15 mVp-p
Out
VID=5 mVp-p
LOS Hysteresis
LOS Release Time
Minimum Input
LOS Release Time
Maximum Input
LOS Assert Time
LOS Sensitivity Range
November 2006 * REV - 2
-40°C
Min
5
2
5
0°C
Max
1800
150
8
Min
5
2
Max
1800
150
8
Min
5
2
25°C
Typ
85°C
Unit
mV
ps
MVp-p
0.5
0.5
0.1
0.5
0.5
μs
0.5
0.5
0.1
0.5
0.5
μs
0.5
50
0.5
50
0.2
0.5
50
0.5
50
μs
MVp-p
5
www.azmicrotek.com
2
5
5
AZ88923
0.1μF
FROM
TRANSIMPEDANCE
AMPLIFIER
DIN
{
/DIN
0.1μ F
50Ω
50Ω
VREF
0.1μ F
DIFFERENTIAL INPUT CONFIGURATION
VCC
VCC
> 4.7kΩ
R1
LOS
LOSLVL
R2
VREF
LOS OUTPUT
LOSLVL CIRCUIT
NOTES:
LOSLVL = VCC – 1.32V +
R1 + R2 ≥ 2.6kΩ
November 2006 * REV - 2
www.azmicrotek.com
3
R2 x 1.32V
R1 + R2
AZ88923
PACKAGE DIAGRAM
TSSOP 10
DIM
A
A1
A2
A3
bp
c
D1
E2
e
HE
L
Lp
v
w
y
Z
θ
NOTES:
1.
DIMENSIONS D AND E DO NOT
INCLUDE MOLD PROTRUSION.
2.
MAXIMUM MOLD PROTRUSION
FOR D IS 0.15mm.
3.
MAXIMUM MOLD PROTRUSION
FOR E IS 0.25mm.
November 2006 * REV - 2
www.azmicrotek.com
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MILLIMETERS
MIN
MAX
1.10
0.05
0.15
0.80
0.95
0.25
0.15
0.30
0.15
0.23
2.90
3.10
2.90
3.10
0.50
4.80
5.00
0.95
0.40
0.70
0.10
0.10
0.10
0.34
0.67
6O
0O
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
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