Datasheet > LTC6912

LTC6912

更新时间： 2024-11-09 05:44:03

品牌	Logo	应用领域
凌特 - Linear		放大器
页数	文件大小	规格书
24页	409K
描述
Dual Programmable Gain Amplifiers with Serial Digital Interface

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LTC6912 数据手册

LTC6912

Dual Programmable

Gain Amplifiers with

Serial Digital Interface

FEATURES

DESCRIPTIO

The LTC^®6912 is a family of dual channel, low noise,

digitally programmable gain amplifiers (PGA) that are

easy to use and occupy very little PC board space. The

gains for both channels are independently programmable

using a 3-wire SPI interface to select voltage gains of 0, 1,

2, 5, 10, 20, 50, and 100V/V (LTC6912-1 ); and 0, 1, 2, 4,

8, 16, 32, and 64V/V (LTC6912-2). All gains are inverting.

■

2 Channels with Independent Gain Control

LTC6912-1: (0, 1, 2, 5, 10, 20, 50, and 100V/V)

LTC6912-2: (0, 1, 2, 4, 8, 16, 32, and 64V/V)

■

Offset Voltage = 2mV Max (–40°C to 85°C)

■

Channel-to-Channel Gain Matching of 0.1dB Max

3-Wire SPI^TMInterface

■

Extended Gain-Bandwidth at High Gains

■

Wired-OR Outputs Possible (2:1 Analog MUX

The LTC6912 family consists of 2 matched amplifiers with

rail-to-rail outputs. When operated with unity gain, they

will also process rail-to-rail input signals. A half-supply

reference generated internally at the AGND pin supports

single power supply applications. Operating from single

or split supplies from 2.7V to 10.5V total, the LTC6912-X

family is offered in tiny SSOP and DFN-12 Packages.

Function)

■

Low Power Hardware Shutdown (GN-16 Only,

2µA Max at 2.7V)

■

Rail-to-Rail Input Range

■

Rail-to-Rail Output Swing

■

Single or Dual Supply: 2.7V to 10.5V Total

■

Input Noise: 12.6nV/√Hz

■

Total System Dynamic Range to 115dB

■

16-Pin GN (SSOP) or 12-Pin DFN Package Options

, LTC and LT are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

APPLICATIO S

■

Data Acquisition Systems

■

Dynamic Gain Changing

■

Automatic Ranging Circuits

Automatic Gain Control

■

TYPICAL APPLICATIO

A Dual, Matched Low Noise PGA (16-Lead SSOP Package)

0.1µF

LTC6912-2

Frequency Response

–

±2.5V

GAIN OF 64

GAIN OF 32

GAIN OF 16

GAIN OF 8

GAIN OF 4

GAIN OF 2

GAIN OF 1

= 10mV

RMS

INA

OUT A

= GAIN • V

INA

OUTA

OUTB

INA

1µF

LTC6912-X

AGND

INB

OUT B

= GAIN • V

INB

–10

CHB

SHDN

CHA

DGND

0.1

100

1000 10000

SHDN

CS/LD

DATA

CLK

FREQUENCY (kHz)

CS/LD

3-WIRE

SPI

INTERFACE

6912 TA01b

OUT

6912 TA01a

6912fa

12 3 4 5 6 7...24

中文翻译

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与LTC6912相关器件

型号	品牌	获取价格	描述	数据表
LTC6912CDE-1	Linear	获取价格	Dual Programmable Gain Amplifiers with Serial Digital Interface
LTC6912CDE-2	Linear	获取价格	Dual Programmable Gain Amplifiers with Serial Digital Interface
LTC6912CDE-2#TR	Linear	获取价格	LTC6912 - Dual Programmable Gain Amplifiers with Serial Digital Interface; Package: DFN; P
LTC6912CGN-1	Linear	获取价格	Dual Programmable Gain Amplifiers with Serial Digital Interface
LTC6912CGN-1#TR	Linear	获取价格	LTC6912 - Dual Programmable Gain Amplifiers with Serial Digital Interface; Package: SSOP;
LTC6912CGN-2	Linear	获取价格	Dual Programmable Gain Amplifiers with Serial Digital Interface
LTC6912CGN-2#TR	Linear	获取价格	LTC6912 - Dual Programmable Gain Amplifiers with Serial Digital Interface; Package: SSOP;
LTC6912HGN-1	Linear	获取价格	Dual Programmable Gain Amplifiers with Serial Digital Interface
LTC6912HGN-2	Linear	获取价格	Dual Programmable Gain Amplifiers with Serial Digital Interface
LTC6912HGN-2#PBF	Linear	获取价格	LTC6912 - Dual Programmable Gain Amplifiers with Serial Digital Interface; Package: SSOP;

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