ATA12001 Datasheet, PDF (1/8 Pages) ANADIGICS, Inc – AGC Transimpedance Amplifier

FEATURES
· Single +5 Volt Supply
· Automatic Gain Control
· -31 dBm Sensitivity
· 0 dBm Optical Overload
· 1100 MHz Bandwidth
APPLICATIONS
· SONET OC-24 (1 Gb/s) Receiver
· Low Noise RF Amplifier
· BISDN
· HIPPI
ATA12001
AGC Transimpedance Amplifier
SONET OC-24
PRELIMINARY DATA SHEET-Rev 4
VDD2
VDD1
925 um _4E
IIN
GND
GND
1992
GND
VOUT
GND GND GND ^{CBY CBY} GND ^CAGC GND
1250 um
D1C
PRODUCT DESCRIPTION
The ANADIGICS ATA12001 is a 5V low noise
transimpedance amplifier with AGC designed to be
used in 1Gb/s fiber optic links. The device is used in
conjunction with a photodetector (PIN diode or
avalanche photodiode) to convert an optical signal
into an output voltage. The ATA12001 offers a
bandwidth of 1100MHz and a dynamic range of 31dB.
It is manufactured in a GaAs MESFET process and
is available in bare die form.
V_DD1
AGC
V_DD2
GND
I_IN
or
neg. Supply
4K
- 35
VGA
70K
C_AGC
4pF
+ 0.8
V_OUT
PATENT PENDING
C _{PhotodetecBtYor Cathode must be connected to}
I_IN for proper AGC operation
Figure 1: Equivalent Circuit
GND
08/2001