MAX3260 판매점 - 1GHz Transimpedance Preamplifier with 25dB Dynamic Range

MAX3260 반도체 회로 부품 판매점

1GHz Transimpedance Preamplifier with 25dB Dynamic Range

Maxim Integrated

19-0322; Rev 0; 10/94

1GHz Transimpedance Preamplifier

with 25dB Dynamic Range

_______________General Description

The MAX3260 high-speed transimpedance amplifier is

ideally suited for Fibre Channel and SDH/SONET appli-

cations. An extended dynamic range makes the

MAX3260 useful in optical receiver systems with as

much as 25dB of input signal range. A DC-restore feed-

back network prevents amplifier saturation in all Fibre

Channel applications by allowing input currents as high

as 900µA to be amplified linearly. To reduce noise, the

restore function is disabled at low input levels, allowing

detection of signals as small as 2.4µA with a signal-to-

noise ratio of 10.

The filter output (FILTER) of the MAX3260 provides a

convenient voltage source for a photodiode, especially

when the circuit will be placed into a TO-style header

with the photodiode. The filter output is connected to

VCC through a 1kΩ on-chip resistor. In combination

with a bypass capacitor, the filter function significantly

reduces the amount of noise present at the cathode of

the photodiode.

The MAX3260 operates from a single +5V supply con-

suming only 115mW of power when the output is AC

coupled. With 50Ω output termination, it consumes less

than 300mW of power.

________________________Applications

High-Speed Fiber Optics

531Mbps and 1062Mbps Fibre Channel

622Mbps SDH/SONET

Current-to-Voltage Converters

PIN-Preamp Headers

____________________________Features

o 1GHz Bandwidth

o Single 5V Supply

o 25dB Dynamic Range

o Optimized for TO-Style Header

______________Ordering Information

PART

MAX3260C/D

TJ RANGE

0°C to +100°C

PIN-PACKAGE

Dice

___________________Chip Topography

VCCB 1

I IN FILTER N.C. VOUT

14 13 12 11

0.040"

(1.016mm)

10 GND

__________Typical Operating Circuit

FILTER

VOUT

IIN MAX3260

VCC GND

Zo = 50Ω

DOUT+

LIMITING

AMPLIFIER

MAX3262

DOUT-

DIN-

50Ω

+5V

VCCB 2

VCCA 3

VCCA 4

N.C.

0.040"

(1.016mm)

GND

TRANSISTOR COUNT: 16

SUBSTRATE CONNECTED TO GND

9 GND

8 GND

7 GND

________________________________________________________________ Maxim Integrated Products 1

Call toll free 1-800-998-8800 for free samples or literature.

1GHz Transimpedance Preamplifier

with 25dB Dynamic Range

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, VCCA, VCCB to GND ...............................0V, 6V

Input Current, IIN, FILTER ..................................................1.5mA

Input Bias Voltage, VIN ......................................................0V, 6V

Output Voltage, VOUT ........................................................0V, 6V

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

Processing Temperature..................................................+400°C

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.

ELECTRICAL CHARACTERISTICS

(VCC = +5V, output terminated with 50Ω to ground, 100% tested, TJ = +27°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

DC SPEPCAIFRICAAMTEITOENRS

SYMBOL

CONDITIONS

Input Bias Voltage

VIN

DC-Restore Time Constant

tDC

Filter Resistor Value

RFILTER

Supply Current

IVCC 50Ω load to ground

DC Transimpedance

IIN > 400µA

IIN < 100µA

DC-Restore Activation Current IRESTORE

AC SPECIFICATIONS (Not production tested)

Small-Signal Transimpedance

-3dB Bandwidth

BWU

Peak Input Current

IIN

Pulse-Width Distortion

PWD (Notes 1, 2, 3)

Input Referred Current Noise

INRMS (Notes 2, 4)

Power-Supply Rejection Ratio

PSRR

Output Resistance

ROUT

MIN

750

-400

-2400

TYP

1.6

-2000

350

MAX

1250

UNITS

µs

Ω

-1600

V/A

µA

-2400

0.8

-2000

1.0

-1600

900

100

240

V/A

GHz

µA

Ω

Note 1: Input is a square wave with 0.5GHz frequency and <200ps rise time.

Note 2: External capacitance on the input ≤ 0.4pF.

Note 3: Pulse-width distortion measured at the 50% level of the output pulses: Input is 900µA, zero-peak.

Note 4: Output noise is measured through a four-pole Bessel filter with -3dB bandwidth of 800MHz.

Noise is then referred to the input by dividing the DC transimpedance.

__________________________________________Typical Operating Characteristics

(TJ = +27°C, unless otherwise noted.)

FREQUENCY RESPONSE

DC TRANSFER FUNCTION

2.0

67 1.8

66 1.6

65 1.4

64 1.2

63 1.0

62 0.8

61 0.6

60 0.4

59 0.2

200 400 600 800 1000 1200 1400

FREQUENCY (MHz)

0 200 400 600 800 1000

IIN (µA)

2 _______________________________________________________________________________________

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제조업체: Maxim Integrated

( maxim )

MAX3260 amplifier

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국내 전력반도체 판매점

상호 : 아이지 인터내셔날

전화번호 : 051-319-2877

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MAX3260 반도체 회로 부품 판매점

1GHz Transimpedance Preamplifier with 25dB Dynamic Range

국내 전력반도체 판매점

일반적인 전자부품 판매점

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