Datasheet > LTC6561

LTC6561

更新时间： 2024-11-22 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		放大器
页数	文件大小	规格书
24页	2396K
描述
提供输出复用的四通道复用跨阻放大器

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中文翻译

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数据手册

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LTC6561 数据手册

LTC6561

Four-Channel Multiplexed

Transimpedance Amplifier

with Output Multiplexing

FEATURES

DESCRIPTION

The LTC^®6561 is a low-noise four-channel, transimped-

ance amplifier (TIA)with 220MHz bandwidth. The LTC6561

multi-channel transimpedance amplifier’s low noise, high

transimpedance, and low power dissipation are ideal for

LIDAR receivers using Avalanche Photodiodes (APDs).

The amplifier features 74kΩ transimpedance gain and

30µA linear input current range. Using an APD input cir-

cuit with a total capacitance of 2pF, the input current noise

density is 4.5pA/√Hz at 200MHz. With lower capacitance,

noise and bandwidth improve further. Only a 5V single

supply is needed and the device consumes only 200mW.

Utilizing the internal 4-to-1 MUX along with the LTC6561’s

output MUX; multiple 4-channel LTC6561 devices can be

combined to directly interface with 8, 12, 16 and 32-chan-

nel APD arrays. The LTC6561’s fast overload recovery

and fast channel switchover make it well suited for LIDAR

receivers with multiple APDs. Its single-ended output can

220MHz –3dB Bandwidth with 2pF Input Capacitance

Single-Ended Output

74kΩ Transimpedance Gain

4.8pA/√Hz Input Current Noise Density at

200MHz (2pF)

64nA

Integrated Input Current Noise Over

RMS

200MHz (2pF)

Linear Input Range 0µA to 30µA

Overload Current > 400mA Peak

Fast Overload Recovery 12ns, 1mA

Fast Channel Switchover < 50ns

Single 5V Supply

200mW Power Dissipation for 4 Channels

2V Output Swing on 100Ω Load

P-P

4mm × 4mm, 24-Lead QFN Package

Output MUX Combines Multiple 4-Channel Devices

to Create 4, 8,12,16, 24, 32 Channel Solutions

AEC-Q100 Qualified for Automotive Applications

swing 2V on a 100Ω load. While its low impedance op

P-P

amp-style output can drive back-terminated 50Ω cables.

The LTC6561 is packaged in a compact 4mm × 4mm

24-pin leadless QFN package with an exposed pad for

thermal management and low inductance.

APPLICATIONS

LIDAR Receiver

Industrial Imaging

All registered trademarks and trademarks are the property of their respective owners.

TYPICAL APPLICATION

Typical Application with DC-Coupled Inputs Driving a Time-to-Digital

Converter with Back-Terminated Cable

Pulse Response at the Edge of

the Overload Region (40µA)

MULTIPLE LTC6561’s

WIRE-OR

MUX

47.5Ω

OUT(2)

LTC6561

ꢀꢁꢂꢃꢁꢂ Rꢄꢅꢃꢀꢆꢅꢄ

CC1,2

CCO

ꢀꢁ.ꢂꢃꢄꢅꢆꢃꢇ

TIA

TIME-OF-FLIGHT

DETECTOR

IN1

47.5Ω

OUT

50Ω

OUTPUT

STAGE

REF1

WITH SERIES 50Ω,

IN2

INTO 50Ω LOAD,RT = 37kΩ

EFF

REF2

4:1

GAIN

MUX

IN3

–

ꢀꢁꢂꢃꢄ ꢂꢃꢅꢆꢇ

ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉ

OUTTERM

–150V

REF3

APD ARRAY

TIA

IN4

ꢀꢁꢀꢂ ꢃꢄꢂ

O_MUX(2)

ꢀꢁꢂꢃꢄꢅꢆ

REF4

GND

CHSEL1,0 O_MUX

6561 TA01a

Rev. C

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中文翻译

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与LTC6561相关器件

型号	品牌	获取价格	描述	数据表
LTC6561DICE/DWF	ADI	获取价格	Analog Circuit
LTC6563	ADI	获取价格	提供输出复用的四通道跨阻放大器
LTC656TG	ETC	获取价格	Optoelectronic
LTC656TP	ETC	获取价格	Optoelectronic
LTC660	Linear	获取价格	100mA CMOS Voltage Converter
LTC660	ADI	获取价格	100mA CMOS 电压转换器
LTC6601-1	Linear	获取价格	Low Noise, 0.5% Tolerance, 5MHz to 28MHz, Pin Confi gurable Filter/ADC Driver
LTC6601-1	ADI	获取价格	低噪声、0.5% 容差、5MHz 至 28MHz、引脚可配置滤波器 / ADC 驱动器
LTC6601-2	Linear	获取价格	Low Power, Low Distortion, 5MHz to 27MHz, Pin Confi gurable Filter/ADC Driver
LTC6601-2	ADI	获取价格	低功率、低失真、5MHz 至 27MHz、引脚可配置滤波器 / ADC 驱动器

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