M02009 Datasheet, PDF (7/19 Pages) M/A-COM Technology Solutions, Inc. – Pin Pre-amplifier with AGC for 3.3V Fiber Optic Applications to 622 Mbps

Functional Description
Figure 1-2. Top level diagram
PINK
MON
V_CC
DOUT
PINA
DOUTB
AGC
GND
1.2
Features
• Low cost IC fabricated in CMOS.
• Receiver sensitivity better than -32 dBm @ 622 Mbps.
• Minimum 340 MHz bandwidth and multi-pole roll off allows a wide range of operation up to 622 Mbps.
• Typical differential transimpedance at low signal levels of 40Ω.
• AGC gives continuous operation to +3 dBm
• > 33 dB power-supply noise rejection.
• Typical 130 mW power comsumption at 3.3V supply.
• Monitor output gives linear indication of received optical power.
• Differential output.
1.3
General Description
1.3.1
TIA (Transimpedance Amplifier)
The transimpedance amplifier consists of a high gain single-ended CMOS amplifier, with a feedback resistor. The
feedback creates a virtual low impedance at the input and virtually all of the input current passes through the feed-
back resistor, defining the voltage at the output. Advanced CMOS design techniques are employed to maintain the
stability of these stages across all input conditions.
02009-DSH-001-D
Mindspeed Technologies™
2
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