LTC1093CSW datasheet(1/32 Pages) LINER

部件名	LTC1093CSW

功能描述	1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems

PDF	32 Pages

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制造商	LINER [Linear Technology]

网页	http://www.linear.com

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1

LTC1091/LTC1092

LTC1093/LTC1094

1-, 2-, 6- and 8-Channel, 10-Bit

Serial I/O Data Acquisition Systems

s

Programmable Features

– Unipolar/Bipolar Conversions

– Differential/Single-Ended Multiplexer

Configurations

s

Sample-and-Holds

s

Single Supply 5V, 10V or

±5V Operation

s

Direct 3- or 4-Wire Interface to Most MPU Serial

Ports and All MPU Parallel I/O Ports

s

Analog Inputs Common Mode to Supply Rails

s

Resolution: 10 Bits

s

Total Unadjusted Error (A Grade):

±1LSB Over Temp

s

Fast Conversion Time: 20

µs

s

Low Supply Current

LTC1091: 3.5mA Max, 1.5mA Typ

LTC1092/LTC1093/LTC1094: 2.5mA Max, 1mA Typ

5V

ANALOG INPUT #1

0V TO 5V RANGE

ANALOG INPUT #2

0V TO 5V RANGE

CLK

DOUT

DIN

CS

CH0

CH1

GND

LTC1091

MPU

(e.g., 8051)

P1.4

P1.3

P1.2

1091 TA01

8

7

6

5

1

2

3

4

SERIAL DATA LINK

FOR 8051 CODE SEE

APPLICATIONS INFORMATION

SECTION

VCC

(VREF)

4.7

µF

REFERENCE VOLTAGE (V)

0

1.25

1.00

0.75

0.50

0.25

0

4

1091 TA02

1

2

3

5

VCC = 5V

The LTC

®1091/LTC1092/LTC1093/LTC1094 10-bit data

acquisition systems are designed to provide complete

function, excellent accuracy and ease of use when digitiz-

ing analog data from a wide variety of signal sources and

transducers. Built around a 10-bit, switched capacitor,

successive approximation A/D core, these devices include

software configurable analog multiplexers and bipolar and

unipolar conversion modes as well as on-chip sample-

and-holds. On-chip serial ports allow efficient data trans-

fer to a wide range of microprocessors and microcontrol-

lers. These circuits can provide a complete data acquisi-

tion system in ratiometric applications or can be used with

an external reference in others.

The high impedance analog inputs and the ability to

operate with reduced spans (below 1V full scale) allow

direct connection to sensors and transducers in many

applications, eliminating the need for gain stages.

An efficient serial port communicates without external

hardware to most MPU serial ports and all MPU parallel

I/O ports allowing eight channels of data to be transmitted

over as few as three wires. This, coupled with low power

consumption, makes remote location possible and facili-

tates transmitting data through isolation barriers.

Temperature drift of offset, linearity and full-scale error

are all extremely low (1ppm/

°C typically) allowing all

grades to be specified with offset and linearity errors of

±0.5LSB maximum over temperature. In addition, the A

grade devices are specified with full-scale error and total

unadjusted error (including the effects of offset, linearity

and full-scale errors) of

±1LSB maximum over tempera-

ture. The lower grade has a full-scale specification of

±2LSB for applications where full scale is adjustable or

less critical.

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

FEATURES

DESCRIPTIO

TYPICAL APPLICATION

类似零件编号 - LTC1093CSW

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Linear Technology	LTC1093	287Kb / 32P	1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems

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