ATA06212A
AGC Transimpedance Amplifier
PRELIMINARY DATA SHEET- Rev 1.2
FEATURES
•
Single +5 Volt Supply
•
Automatic Gain Control
•
- 34 dBm Sensitivity
•
0 dBm Optical Overload
•
425 MHz Bandwidth
APPLICATIONS
•
SONET OC-12/SDH STM-4 (622 Mb/s)
•
Receiver
Low Noise RF Amplifier
Vdd2
Vdd2
Vdd1
GND
GND
I in
GND
V out
GND
GND
GND
CBY
CBY
GND
CAGC
GND
D1
PRODUCT DESCRIPTION
The ANADIGICS ATA06212A is a 5V low noise
transimpedance amplifier with AGC designed to be
used in OC-12/STM-4 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 ATA06212A offers a
bandwidth of 425MHz and a dynamic range of 35dB.
It is manufactured in a GaAs MESFET process and
is available in bare die form.
V
DD
AGC
V
OUT
I
IN
GND
GND
or
neg. supply
Photodetector cathode must be connected to
I
IN
for proper AGC operation
Figure 1: Equivalent Circuit
08/2001
ANADIGICS [ ANADIGICS, INC ]
