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SP8127N

High Speed Differential APC Amplifier

Signal Processing Technologies 

ADVANCED

SP8127N

ELECTRICAL/OPTICAL SPECIFICATIONS

Unless otherwise noted: Vcc = 5V, output load: RL = 1kΏ , CL = 20pF, gain 0 dB, ambient temperature

-20C ≤Ta ≤ +85 oC

Parameter

Condition

Min.

Typ.

Max

Unit

Supply Current

Ta = 25 oC, no signal, no load

-20 ≤Ta ≤ +85 oC, no signal, no

load

15

mA

20

Output Common Mode Voltage

No signal

Vcc/2.2 Vcc/2 Vcc/1.8

V

Output Offset Voltage

Gain = 0dB, no signal

-10

Gain = +6dB, no signal

-20

10

mV

20

Output Offset Voltage Drift

Gain = 0dB, no signal

-25

Gain = + 6dB, no signal

-50

25

µV/oC

50

Power Supply Rejection Ratio

(PSRR) *

Gain = 0dB, 4.5V ≤ Vcc ≤ 5.5V

55

76

dB

Output Sensitivity

Input Optical Power required to

produce a 2V differential output

swing

Photo Detector Active Area

Gain = 0dB

0.35mm laser beam diameter,

uniform density, Gain = 0dB

4560

5700

263

0.245

6840

V/W

µW

mm2

Output Settling Time

Gain = -6dB, 2Vpp step

Gain = 0dB, 2Vpp step

5

7

ns

6

9

Full Scale Output Voltage Swing

Differential voltage = (V+) – (V-)

2

V p-p

Bandwidth

Gain = -6dB, -3dB level

Gain = 0dB, -3dB level

80

100

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 #

1

2

3

4

5

6

7

8

Pin Name

Vcc

Gain

Rc

GND

Rg1

Rg2

Vout (–)

Vout(+)

Pin Function

Supply Voltage. Bypass to GND with ceramic capacitor 0.1µF

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

Common connection point for Rg1 and Rg2

Power Ground

Gain Adjust 1

Gain Adjust 2

Output Voltage Negative Swing

Output Voltage Positive Swing

Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier

Copyright 2003 Sipex Corporation

SIPEX RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. CALL FOR UPDATES: 1-978-667-8700.

SIPEX CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE OR

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