Datasheet > LTC1297

LTC1297

更新时间： 2023-12-20 18:44:05

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	317K
描述
单芯片 12 位数据采集系统

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LTC1297 数据手册

LTC1292/LTC1297

Single Chip 12-Bit

Data Acquisition Systems

FEATURES

DESCRIPTIO

TheLTC^®1292/LTC1297aredataacquisitionsystemsthat

contain a 12-bit, switched-capacitor successive approxi-

mation A/D, a differential input, sample-and-hold on the

(+)input,andserialI/O.WhentheLTC1297isidlebetween

conversions it automatically powers down reducing the

supply current to 5µA, typically. The LTC1292 is capable

of digitizing signals at a 60kHz rate and with the device’s

excellent AC characteristics, it can be used for DSP appli-

cations. All these features are packaged in an 8-pin DIP

and are made possible using LTCMOS^TMswitched-capaci-

tor technology.

■

Single Supply 5V Operation

■

Power Shutdown After Each Conversion (LTC1297)

■

Built-In Sample-and-Hold

60kHz Maximum Throughput Rate (LTC1292)

Direct 3-Wire Interface to Most MPU Serial Ports and

All MPU Parallel Ports

Analog Inputs Common Mode to Supply Rails

■

KEY SPECIFICATIO S

■

Resolution: 12 Bits

■

Fast Conversion Time: 12µs Max Over Temp

TheserialI/Oisdesignedtocommunicatewithoutexternal

hardware to most MPU serial ports and all MPU parallel

I/O ports allowing data to be transmitted over three wires.

Because of their accuracy, ease of use and small package

size these devices are well suited for digitizing analog

signals in remote applications where minimum number of

interconnects and power consumption are important.

■

Low Supply Current: 6.0mA

Shutdown Supply Current: 5µA (LTC1297)

■

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

LTCMOS is trademark of Linear Technology Corporation

TYPICAL APPLICATIO

Power Supply Current

vs Sampling Frequency

12-Bit Differential Input Data Acquisition System

10000

1000

22µF

TANTALUM

MC68HC11

SCK

DIFFERENTIAL

INPUTS

COMMON MODE

RANGE

+IN

–

CLK

1N4148

LTC1297

100

–IN

MISO

OUT

0V TO 5V

GND

LT1027

REF

8V TO 40V

4.7µF

TANTALUM

1µF

100

10k

100k

(Hz)

SAMPLE

LTC1297• TA02

*FOR OVERVOLTAGE PROTECTION LIMIT THE INPUT CURRENT TO 15mA

PER PIN OR CLAMP THE INPUTS TO V AND GND WITH 1N4148 DIODES.

CONVERSION RESULTS ARE NOT VALID WHEN ANY INPUT IS OVERVOLTAGED

(V < GND OR V > V ). SEE SECTION ON OVERVOLTAGE PROTECTION IN

LTC1292/7 TA01

THE APPLICATIONS INFORMATION.

12927fb

12 3 4 5 6 7...24

下载PDF

与LTC1297相关器件

型号	品牌	描述	获取价格	数据表
LTC1297_15	Linear	Single Chip 12-Bit Data Acquisition Systems	获取价格
LTC1297BC	Linear	Single Chip 12-Bit Data Acquisition Systems	获取价格
LTC1297BCJ	Linear	IC IC,A/D CONVERTER,SINGLE,12-BIT,CMOS,DIP,8PIN, Analog to Digital Converter	获取价格
LTC1297BCJ8	Linear	Single Chip 12-Bit Data Acquisition Systems	获取价格
LTC1297BCJ8#PBF	Linear	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8, 0.300 INCH, HERMETIC SE	获取价格
LTC1297BCN8	Linear	Single Chip 12-Bit Data Acquisition Systems	获取价格