LTC1289CIJ#TRPBF datasheet, PDF

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LTC1289CIJ#TRPBF: DescriptionIC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20, 0.300 INCH, LEAD FREE, CERDIP-20, Analog to Digital Converter; CategoryAnalog mixed-signal IC converter; File Size664KB，28 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC1289CIJ#TRPBF Overview

IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20, 0.300 INCH, LEAD FREE, CERDIP-20, Analog to Digital Converter

LTC1289CIJ#TRPBF Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	DIP
package instruction	DIP,
Contacts	20
Reach Compliance Code	compli
ECCN code	EAR99
Maximum analog input voltage	3.05 V
Minimum analog input voltage	-3.05 V
Maximum conversion time	26 µs
Converter type	ADC, SUCCESSIVE APPROXIMATION
JESD-30 code	R-GDIP-T20
JESD-609 code	e3
Maximum linear error (EL)	0.0122%
Nominal negative supply voltage	-3 V
Number of analog input channels	8
Number of digits	12
Number of functions	1
Number of terminals	20
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Output bit code	2\'S COMPLEMENT BINARY
Output format	SERIAL
Package body material	CERAMIC, GLASS-SEALED
encapsulated code	DIP
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Sampling rate	0.025 MHz
Sample and hold/Track and hold	SAMPLE
Maximum seat height	5.08 mm
Nominal supply voltage	3 V
surface mount	NO
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	7.62 mm

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LTC1289

3 Volt Single Chip 12-Bit

Data Acquisition System

FEATURES

■

DESCRIPTIO

■

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

Available in 20-Lead PDIP and 20-Lead SW Packages

The LTC

1289 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

switched 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.

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

standard full duplex serial interfaces. It allows either MSB-

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.

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

LTCMOS is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

APPLICATIO S

■

Minimum Guaranteed Supply Voltage: 2.7V

Resolution: 12 Bits

Fast Conversion Time: 26µs Max Over Temp

Low Supply Currents: 1.0mA

TYPICAL APPLICATIO

+3V

Single Cell 3V 12-Bit Data Acquisition System

CH0

1N4148

CH1

CH2

CH3

10µF

–3V

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

WHEN THE SELECTED OR ANY OTHER

CHANNEL IS OVERVOLTAGED (V

< V

–

or V

> V

ACLK

SCLK

TO AND

FROM

MPU

–

1/4 LTC1079

22µF

TANTALUM

10k

BOOST

OSC

LTC1044

10Ω

CH4 LTC1289 D

OUT

CH5

CH6

CH7

COM

DGND

REF

–

AGND

1N4148

22µF

LT1004-1.2

0.1µF

1N5817

LTC1289 TA01

LITHIUM

10µF

CAP

GND

CAP

–

OUT

–3V

22µF

1289fb

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