ARIZONA MICROTEK, INC.
AZ88943
High-Speed Limiting Post Amplifier
FEATURES
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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 SD Output
TTL/CMOS Enable Input
High-Speed SiGe Process
DESCRIPTION
PACKAGE
PART NUMBER
TSSOP 10
1
2
3
4
AZ88943U
MARKING
NOTES
AZ88
943
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 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 VCC and VREF. The SD 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
SDLVL
SD
VREF
VCC
GND
FUNCTION
Differential Inputs
PECL Outputs
Output Enable
Signal Detect Threshold
SD Output
Reference Voltage Output
Positive Voltage
Ground
BLOCK DIAGRAM
DIN
DOUT
/DIN
/DOUT
PINOUT ASSIGNMENT
/EN
/EN
1
10
VCC
DIN
2
9
DOUT
TSSOP-10
/DIN
3
8
/DOUT
VREF
4
7
SD
SDLVL
5
6
GND
VREF
SDLVL
SD
1630 S. STAPLEY DR., SUITE 127 • MESA, ARIZONA 85204 • USA • (480) 962-5881 • FAX (480) 890-2541
www.azmicrotek.com
AZ88943
Absolute Maximum Ratings are those values beyond which device life may be impaired
Symbol
VCC
TA
TSTG
DIN, /DIN
/EN
LOSLVL
VREF
DOUT, /DOUT
Character
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 +125
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
-40°C
Characteristic
Min
Power Supply Current1
IEE
VOH
Output HIGH Voltage
VOL
Output LOW Voltage
VIH
VIL
VOL
/EN Input HIGH Voltage
/EN Input LOW Voltage
SD Output LOW Voltage2
VREF
Reference Voltage
IIH
/EN Input HIGH Current
VCMR
Common Mode Range
1.
No output load.
2.
IOL = +2mA.
VCC1085
VCC1830
2.0
0.8
VCC 1.38
GND+2
0°C
Max
40
VCC880
VCC1555
0.5
VCC 1.26
100
VCC
Min
VCC1025
VCC1810
2.0
0.8
VCC 1.38
GND+2
Max
40
VCC880
VCC1620
0.5
VCC 1.26
100
VCC
Min
VCC1025
VCC1810
2.0
0.8
25°C
Typ
30
VCC955
VCC1705
85°C
Max
40
VCC880
VCC1620
0.5
VCC 1.26
100
VCC
VCC 1.38
GND+2
Min
VCC1025
VCC1810
2.0
0.8
VCC 1.38
GND+2
Max
45
VCC880
VCC1620
0.5
VCC 1.26
100
VCC
Unit
mA
mV
mV
mV
mV
V
V
μA
V
AC Characteristics (VCC = 3.0V to 3.6V, RLOAD = 50Ω to VCC-2V)
Symbol
VID
tr / t f
VOD
HYS
tONL
tONH
tOFFL
VSR
Characteristic
Input Voltage Range
Rise/Fall Time
Diff
VID=15 mVp-p
Out
VID=5 mVp-p
SD Hysteresis
SD Release Time
Minimum Input
SD Release Time
Maximum Input
SD Assert Time
SD Sensitivity Range
November 2006 * REV - 2
-40°C
Min
5
2
0°C
Max
1800
150
8
Min
5
2
0.5
5
Max
1800
150
8
Min
5
2
0.5
25°C
Typ
85°C
Unit
Max
1800
150
Min
5
Max
1800
150
600
200
4.6
8
2
8
dB
0.2
0.5
0.5
μs
mV
ps
MVp-p
0.5
0.5
0.2
0.5
0.5
μs
0.5
50
0.5
50
0.1
0.5
50
0.5
50
μs
MVp-p
5
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2
5
5
AZ88943
0.1μF
FROM
TRANSIMPEDANCE
AMPLIFIER
DIN
{{
/DIN
0.1μ F
50Ω
50Ω
VREF
0.1μ F
DIFFERENTIAL INPUT CONFIGURATION
VCC
VCC
> 4.7kΩ
R1
SD
SDLVL
R2
VREF
SDLVL CIRCUIT
SD OUTPUT
NOTES:
SDLVL = VCC – 1.32V + R2 x 1.32V
R1 + R2
R1 + R2 ≥ 2.6kΩ
November 2006 * REV - 2
www.azmicrotek.com
3
AZ88943
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
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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
AZ88943
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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