LTC1856IG Linear Technology Corporation, LTC1856IG Datasheet

LTC1856IG

Manufacturer Part Number

LTC1856IG

Description

Manufacturer

Linear Technology Corporation

Datasheet

1.LTC1856IG.pdf (24 pages)

Specifications of LTC1856IG

Case

SSOP

Date_code

09+

Current page: 1 of 24
Download datasheet (305Kb)

FEATURES

TYPICAL APPLICATIO

■

APPLICATIO S

■

SOFTWARE-PROGRAMMABLE

±10V BIPOLAR INPUT RANGE

Single 5V Supply

Sample Rate: 100ksps

8-Channel Multiplexer with ±30V Protection

±10V Bipolar Input Range

±3LSB INL for the LTC1856, ±1.5LSB INL for the

LTC1855, ±1LSB INL for the LTC1854

Power Dissipation: 40mW (Typ)

SPI/MICROWIRE

Power Shutdown: Nap and Sleep

SINAD: 87dB (LTC1856)

Operates with Internal or External Reference

Internal Synchronized Clock

28-Pin SSOP Package

Industrial Process Control

Multiplexed Data Acquisition Systems

High Speed Data Acquisition for PCs

Digital Signal Processing

DIFFERENTIAL INPUTS

Single Ended or Differential

SINGLE-ENDED OR

100kHz, 12-Bit/14-/16-Bit Sampling ADC

COM

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

MUXOUT

ADC

AGND1

Compatible Serial I/O

–

LTC1854/

LTC1855/

LTC1856

–

REFCOMP

CONVST

AGND3

AGND2

DGND

BUSY

SDO

SCK

SDI

REF

1μF

μP

CONTROL

LINES

0.1μF

10μF

0.1μF

10μF

DESCRIPTIO

The LTC

power, 12-/14-/16-bit, 100ksps, analog-to-digital con-

verters (ADCs). These ADCs operate from a single 5V

supply and the 8-channel multiplexer can be programmed

for single-ended inputs, pairs of differential inputs, or

combinations of both. In addition, all channels are fault

protected to ±30V. A fault condition on any channel will

not affect the conversion result of the selected channel.

An onboard precision reference minimizes external com-

ponents. Power dissipation is 40mW at 100ksps and lower

in two power shutdown modes (27.5mW in Nap mode and

40mW in Sleep mode.) DC specifications include ±3LSB

INL for the LTC1856, ±1.5LSB INL for the LTC1855 and

±1LSB for the LTC1854.

The internal clock is trimmed for 5ms maximum conver-

sion time and the sampling rate is guaranteed at 100ksps.

A separate convert start input and data ready signal (BUSY)

ease connections to FIFOs, DSPs and microprocessors.

All other trademarks are the property of their respective owners.

0.1μF

12-/14-/16-Bit, 100ksps ADC

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

Converters with Shutdown

LTC1854/LTC1855/LTC1856

10μF

1854/LTC1855/LTC1856 are 8-channel, low

8-Channel, ±10V Input

3V TO 5V

0.1μF

2.5V

–0.5

–1.0

–1.5

–2.0

2.0

1.5

1.0

0.5

–32768

LTC1856 Typical INL Curve

–16384

CODE

16384

185456fa

185456 G01

32767

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