LTC1289BC

更新时间： 2024-09-24 22:24:15

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
28页	485K
描述
3 Volt Single Chip 12-Bit Data Acquisition System

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LTC1289BC 数据手册

LTC1289

3 Volt Single Chip 12-Bit

Data Acquisition System

DESCRIPTIO

EATURE

■

Single Supply 3.3V or ±3.3V Operation

Software Programmable Features

Unipolar/Bipolar Conversions

4 Differential/8 Single-Ended Inputs

Variable Data Word Length

Power Shutdown

Built-In Sample and Hold

Direct 4-Wire Interface to Most MPU Serial Ports

and all MPU Parallel Ports

25kHz Maximum Throughput Rate

The LTC1289 is a 3V data acquisition component which

contains a serial I/O successive approximation A/D con-

verter. The device specifications are guaranteed at a

supply voltage of 2.7V. It uses LTCMOS^TMswitched ca-

pacitor technology to perform a 12-bit unipolar, or 11-bit

plus sign bipolar A/D conversion. The 8 channel input

multiplexer can be configured for either single-ended or

differential inputs (or combinations thereof). An on-chip

sample and hold is included for all single-ended input

channels. When the LTC1289 is idle it can be powered

down in applications where low power consumption is

desired.

■

KEY SPECIFICATIO S

The serial I/O is designed to be compatible with industry

standardfullduplexserialinterfaces. ItallowseitherMSB-

or LSB- first data and automatically provides 2’s comple-

ment output coding in the bipolar mode. The output data

word can be programmed for a length of 8, 12 or 16 bits.

This allows easy interface to shift registers and a variety of

processors.

■

Minimum Guaranteed Supply Voltage ............... 2.7V

■

Resolution ...................................................... 12 Bits

Fast Conversion Time .............. 26µs Max Over Temp

Low Supply Currents ...................................... 1.0mA

LTCMOS^TMis a trademark of Linear Technology Corporation

TYPICAL APPLICATI

Single Cell 3V 12-Bit Data Acquisition System

+3V

CH0

1N4148

22µF

CH1

CH2

CH3

CH4

CH5

CH6

CH7

COM

ACLK

SCLK

LITHIUM

10k

TANTALUM

–

BOOST

10Ω

TO AND

FROM

MPU

1/4 LTC1079

CAP

OSC

LTC1044

OUT

LTC1289

GND

1N4148

1N5817

10µF

–

CAP

OUT

–3V

REF

–3V

LT1004-1.2

–

22µF

REF

FOR OVERVOLTAGE PROTECTION ON

ONLY ONE CHANNEL LIMIT THE INPUT

CURRENT TO 15mA. FOR MORE THAN

ONE CHANNEL LIMIT THE INPUT

CURRENT TO 7mA PER CHANNEL AND

28mA FOR ALL CHANNELS.

CONVERSION RESULTS ARE NOT VALID

–

DGND

AGND

0.1µF

WHEN THE SELECTED OR ANY OTHER

LTC1289 TA01

–

CHANNEL IS OVERVOLTAGED (V < V

or V > V ).

IN CC

12 3 4 5 6 7...28

中文翻译

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与LTC1289BC相关器件

型号	品牌	获取价格	描述	数据表
LTC1289BCJ	Linear	获取价格	3 Volt Single Chip 12-Bit Data Acquisition System
LTC1289BCJ#PBF	Linear	获取价格	IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20, 0.300 INCH, LEAD FREE,
LTC1289BCJ#TR	Linear	获取价格	IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20, 0.300 INCH, CERDIP-20,
LTC1289BCJ#TRPBF	Linear	获取价格	IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20, 0.300 INCH, LEAD FREE,
LTC1289BCN	Linear	获取价格	3 Volt Single Chip 12-Bit Data Acquisition System
LTC1289BCN#PBF	Linear	获取价格	LTC1289 - 3 Volt Single Chip 12-Bit Data Acquisition System; Package: PDIP; Pins: 20; Temp
LTC1289BCN#TR	Linear	获取价格	IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20, 0.300 INCH, PLASTIC, D
LTC1289BCN#TRPBF	Linear	获取价格	IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20, 0.300 INCH, LEAD FREE,
LTC1289BCS	Linear	获取价格	3 Volt Single Chip 12-Bit Data Acquisition System
LTC1289BCSW	Linear	获取价格	3 Volt Single Chip 12-Bit Data Acquisition System

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