LTC1863/LTC1867

1

18637f

APPLICATIO S

BLOCK DIAGRA

FEATURES

DESCRIPTIO

s

Industrial Process Control

s

High Speed Data Acquisition

s

Battery Operated Systems

s

Multiplexed Data Acquisition Systems

s

Imaging Systems

s

Sample Rate: 200ksps

s

16-Bit No Missing Codes and

±2LSB Max INL

s

8-Channel Multiplexer with:

Single Ended or Differential Inputs and

Unipolar or Bipolar Conversion Modes

s

SPI/MICROWIRE

s

Signal-to-Noise Ratio: 89dB

s

Single 5V Operation

s

On-Chip or External Reference

s

Low Power: 1.3mA at 200ksps, 0.76mA at 100ksps

s

Sleep Mode

s

Automatic Nap Mode Between Conversions

s

16-Pin Narrow SSOP Package

12-/16-Bit, 8-Channel

200ksps ADCs

The LTC

12-/16-bit A/D converters with serial I/O, and an internal

reference. The ADCs typically draw only 1.3mA from a

single 5V supply.

The 8-channel input multiplexer can be configured for

either single-ended or differential inputs and unipolar

or bipolar conversions (or combinations thereof). The

automatic nap and sleep modes benefit power sensitive

applications.

The LTC1867’s DC performance is outstanding with a

±2LSB INL specification and no missing codes over tem-

perature. The signal-to-noise ratio (SNR) for the LTC1867

is typically 89dB, with the internal reference.

Housed in a compact, narrow 16-pin SSOP package, the

LTC1863/LTC1867 can be used in space-sensitive as well

as low-power applications.

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

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7/COM

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

GND

SDI

SDO

SCK

CS/CONV

18637 BD

12-/16-BIT

200ksps

ADC

+

–

SERIAL

PORT

ANALOG

INPUT

MUX

REFCOMP

9

INTERNAL

2.5V REF

LTC1863/LTC1867

MICROWIRE is a trademark of National Semiconductor Corp.

OUTPUT CODE

0

49152

18637 GO1

16384

32768

65536

2.0

1.5

1.0

0.5

0

– 0.5

– 1.0

– 1.5

– 2.0

Integral Nonlinearity vs Output Code

(LTC1867)