ADVANCED

SP8127

Rev 0.8 06/29/04. SP8127 High Speed Differential APC Amplifier

Copyright 2003 Sipex Corporation

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ELECTRICAL/OPTICAL SPECIFICATIONS

Parameter

Condition

Min.

Typ.

Max

Unit

Ta = 25

15

Supply Current

-20 ≤Ta ≤ +85

load

20

mA

Output Common Mode Voltage

No signal

Vcc/2.2

Vcc/2

Vcc/1.8

V

Gain = 0dB, no signal

-10

10

Output Offset Voltage

Gain = +6dB, no signal

-20

20

mV

Gain = 0dB, no signal

-25

25

Output Offset Voltage Drift

Gain = + 6dB, no signal

-50

50

µV/

Power Supply Rejection Ratio

(PSRR) *

Gain = 0dB, 4.5V ≤ Vcc ≤ 5.5V

55

76

dB

Output Sensitivity

Gain = 0dB

4560

5700

6840

V/W

Input Optical Power required to

produce a 2V differential output

swing

0.28mm laser beam diameter,

uniform density, Gain = 0dB

263

µW

Photo Detector Active Area

0.098

mm

2

Gain = -6dB, 2Vpp step

5

7

Output Settling Time

Gain = 0dB, 2Vpp step

6

9

ns

Full Scale Output Voltage Swing

Differential voltage = (V+) – (V-)

2

V p-p

Gain = -6dB, -3dB level

80

100

Bandwidth

Gain = 0dB, -3dB level

60

80

MHz

Gain Adjust Range

-6

+6

dB

*) PSRR = 20log (∆Vcc/∆Vout)

**) Gain Linearity = (Gain2 – Gain 1)/Gain 1, where Gain = Vout/Pin. This test is done with current injection at the wafer level.

PIN ASSIGNMENTS

Pin #

Pin Name

Pin Function

1

Vcc

Supply Voltage. Bypass to GND with ceramic capacitor 0.1µF

2

Gain

Gain Switch Input. Low level selects Rg1, high level selects Rg2

3

Rc

Common connection point for Rg1 and Rg2

4

GND

Power Ground

5

Rg1

Gain Adjust 1

6

Rg2

Gain Adjust 2

7

Vout (–)

Output Voltage Negative Swing

8

Vout(+)

Output Voltage Positive Swing