400

500

600

700

800

-40

20

-20

0

40

60

80

100

MAXIMUM OUTPUT SIGNAL AMPLITUDE

vs. AMBIENT TEMPERATURE

AMBIENT TEMPERATURE (°C)

10mV/

div

50mV

-50mV

200ps/div

EYE DIAGRAM

(INPUT = 10

µA)

100mV/

div

500mV

-500mV

200ps/div

EYE DIAGRAM

(INPUT = 1mA)

Pin Description

NAME

FUNCTION

1

Supply-Voltage Input

2

IN

Signal Input

PIN

3

INREF

Input Reference Connection. Connect to photodetector AC ground.

8

COMP

Compensation Capacitor Connection. Connection for optional external compensation capacitor for DC-

cancellation circuit. Add capacitance here to reduce the low-frequency cutoff of the DC cancellation circuit.

Connect COMP directly to GND to disable the DC cancellation circuit.

7

OUT+

Noninverting Voltage Output. Current flowing into the input causes OUT+ to increase.

6

OUT-

Inverting Voltage Output. Current flowing into the input causes OUT- to decrease.

4, 5

GND

Ground

—

FILTER

Filter Connection. Provides positive bias for photodiode through a 1k

Filters section). Available on the die only.

622Mbps, Low-Noise Transimpedance

Preamplifier for LAN and WAN Optical Receivers

4

_______________________________________________________________________________________

Typical Operating Characteristics (continued)