2.5Gbps, +3V to +5.5V, Wide Dynamic Range

Transimpedance Preamplifier

2

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ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: Source capacitance represents the total capacitance at the IN pin during characterization of noise and bandwidth parame-

ters. Noise and bandwidth will be affected by the source capacitance. See the Typical Operating Characteristics for more

information.

Note 2: Input-referred noise is calculated as (RMS output noise) / (Gain at f = 10MHz). Noise density is (Input-Referred Noise) /

Note 3: Deterministic jitter is defined as the arithmetic sum of pulse-width distortion and pattern dependent jitter measured with a

repeating 20-bit pattern of 00111110101100000101 (K28.5). See Typical Operating Characteristics.

IN Current..............................................................-4mA to +4mA

FILTER Current......................................................-8mA to +8mA

8-Pin SO package (derate 6.7mW/°C above +85°C) ..436mW

Storage Temperature Range .............................-55°C to +150°C

Operating Junction Temperature ......................-55°C to +150°C

Processing Temperature (die) .........................................+400°C

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Bias Voltage

0.66

0.83

0.99

V

Supply Current

34

63

mA

Transimpedance

Differential, measured with 40

µAp-p input

2100

2750

3400

Ω

Output Impedance

Single ended (per side)

48

50

52

Ω

Maximum Differential Output Voltage

Input = 2mAp-p with 100

Ω differential output

termination

220

380

575

mVp-p

Filter Resistor

600

750

930

Ω

AC Input Overload

2

mAp-p

DC Input Overload

1mA

Input-Referred RMS Noise

490

668

nA

Input-Referred Noise Density

Bandwidth = 2.0GHz (Note 2)

11

pA/

√(Hz)

Small-Signal Bandwidth

1525

2000

MHz

Low-Frequency Cutoff

-3dB, input

≤ 20µADC

30

kHz

Transimpedance Linear Range

Gain at 40

µAp-p is within 5% of the small-

signal gain

40

µAp-p

24

67

Deterministic Jitter

3.0V

24

77

ps

Power-Supply Rejection Ratio (PSRR)

Output referred, f < 2MHz,

PSRR = -20log(

50

dB