LTC1283CN(RevB) Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Lista de partido

LTC1283CN
(Rev.:RevB)

3V Single Chip 10-Bit Data Acquisition System

Linear Technology 

FEATURES

■ Single Supply 3.3V or ±3.3V Operation

■ Software Programmable Features:

Unipolar/Bipolar Conversions

4 Differential/8 Single-Ended Inputs

MSB- or LSB-First Data Sequence

Variable Data Word Length

■ Built-In Sample-and-Hold

■ Direct 4-Wire Interface to Most MPU Serial Ports

and all MPU Parallel Ports

■ 15kHz Maximum Throughput Rate

KEY SPECIFICATIO S

■ Minimum Guaranteed Supply Voltage: 3V

■ Resolution: 10 Bits

■ Offset Error: ±0.5LSB Max

■ Linearity Error: ±0.5LSB Max

■ Gain Error (LTC1283A): ±1LSB Max

■ Conversion Time: 44μs

■ Supply Current: 350μA Max, 150μA Typ

, 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.

TYPICAL APPLICATI

4.7μF

3V

FOR 83CL410 CODE SEE

APPLICATIONS INFORMATION SECTION

LTC1283

DIFFERENTIAL

INPUT

MPU

(e.g., 83CL410)

3V

–3V

3V

T

BIPOLAR

INPUT

DOUT

P1.1

DIN

P1.2

SCLK

P1.3

UNIPOLAR

INPUTS

CS

P1.4

SERIAL DATA LINK

(+)

(–)

–UNIPOLAR

INPUT

–3V

LTC1283 • TA01

LTC1283

3V Single Chip 10-Bit Data

Acquisition System

DESCRIPTIO

The LTC1283 is a 3V data acquisition component which

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

verter. It uses LTCMOSTM switched capacitor technology

to perform either 10-bit unipolar, or 9-bit plus sign bipolar

A/D conversions. 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.

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-, 10-, 12-, or

16-bit. This allows easy interface to shift registers and a

variety of processors.

Both the LTC1283A and LTC1283 are specified with offset

and linearity errors less than ±0.5LSB. The LTC1283A has

a gain error limit of ±1LSB. The 1283 is specified with a

gain error limit of ±2LSB for applications where gain is

adjustable or less critcial.

1.0

0.5

0

–0.5

– 1.0

0

Linearity Plot

512

OUTPUT CODE

1024

LTC1283 • TA02

1283fb

1

Share Link: