ATA06212AD1C Datasheet, PDF (1/8 Pages) ANADIGICS, Inc – AGC TRANSIMPEDANCE AMPLIFIER

ATA06212AD1C
AGC Transimpedance Amplifier
Preliminary - Rev 1
FEATURES
• Single +5 Volt Supply
• Automatic Gain Control
• Excellent Sensitivity (- 34 dBm)
• 0 dBm Optical Overload
Vdd2
Vdd1
Vdd2
GND
GND
I in
GND
V out
GND
GND GND CBY CBY GND CAGC GND
APPLICATIONS
• SONET OC-12/SDH STM-4 Receiver
D1
• Low Noise RF Amplifier
Electrical Characteristics (1)
(T_A= 25°C, V_DD =+5.0V + 10%, C_DIODE +C_STRAY = 0.7 pF, Detector Cathode to I_IN)
PARAMETER
MIN
TYP
MAX UNIT
Transresistance(R_L=Â¥ ,I_DC < 500 nA)
Transresistance (R_L=50 W ) (1)
Bandwidth - 3dB
7
11
3.5
5
400
425
kΩ
kΩ
MHz
Input Resistance (2)
300
Ω
Output Resistance
30
43
60
Ω
Input Offset Voltage
Output Offset Voltage
AGC Threshold (I ) (3)
IN
AGC Time Constant (6)
Optical Overload (4)
Optical Sensitivity (7)
Input Noise Current (RMS) (5)
Supply Current
Operating Voltage Range
Operating Temperature Range
1.0
1.3
Volts NOTES
1.0
1.4
40
(1) f = 50 MHz
Volts
(2) Measured with I_IN below AGC Threshold.
µA
During AGC, input impedance will decrease
4.2
0
+1
proportionally to I_IN.
µsec _{(3) Defined as the IIN where Transresistance has}
dBm
decreased by 50%.
(4) See note on “Indirect Measurement of Optical
- 34
dBm
Overload.”
40
50
nA ^{(5) See note on “Input Referred Noise Current.”}
30
45
mA
(6) C_AGC = 56 pF
(7) Parameter is guaranteed (not tested) by
+ 4.5 + 5.0 + 5.5 Volts
design and characterization data @ 622 Mb/s,
assuming detector responsively of 0.95.
- 40
85
°C