LTC1091ACN8#PBF datasheet, PDF

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LTC1091ACN8#PBF: Description2-Channel Single ADC SAR 31ksps 10-bit Serial 8-Pin PDIP N Tube; File Size279KB，32 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC1091ACN8#PBF Overview

2-Channel Single ADC SAR 31ksps 10-bit Serial 8-Pin PDIP N Tube

LTC1091ACN8#PBF Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Converter Type	General Purpose
Architecture	SAR
Resolution	10bit
Number of ADCs	1
Number of Input Channels	2\|1
Sampling Rate	31ksps
Digital Interface Type	Serial (4-Wire, SPI, Microwire)
Input Type	Voltage
Input Signal Type	Single-Ended\|Differential
Voltage Reference	Supply
Polarity of Input Voltage	Unipolar
Voltage Supply Source	Single
Input Voltage	5V
Minimum Single Supply Voltage (V)	4.5
Typical Single Supply Voltage (V)	5
Maximum Single Supply Voltage (V)	10
Maximum Power Dissipation (mW)	500
Integral Nonlinearity Error	±0.5LSB
Full Scale Error	±1LSB
Sample and Hold	Yes
Single-Ended Input	Yes
Digital Supply Support	No
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	85
Packaging	Tube
Supplier Temperature Grade	Commercial
Pin Count	8
Standard Package Name	DIP
Supplier Package	PDIP N
Mounting	Through Hole
Package Height	3.3
Package Length	10.16(Max)
Package Width	6.48
PCB changed	8
Lead Shape	Through Hole

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LTC1091/LTC1092

LTC1093/LTC1094

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

Serial I/O Data Acquisition Systems

FEATURES

Programmable Features

– Unipolar/Bipolar Conversions

– Differential/Single-Ended Multiplexer

Configurations

Sample-and-Holds

Single Supply 5V, 10V or

±5V

Operation

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

Ports and All MPU Parallel I/O Ports

Analog Inputs Common Mode to Supply Rails

Resolution: 10 Bits

Total Unadjusted Error (A Grade):

±1LSB

Over Temp

Fast Conversion Time: 20µs

Low Supply Current

LTC1091: 3.5mA Max, 1.5mA Typ

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

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.

DESCRIPTIO

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-

TYPICAL APPLICATION

1.25

LINEARITY ERROR (LSB = 1 • V

REF

)

1024

ANALOG INPUT #1

0V TO 5V RANGE

ANALOG INPUT #2

0V TO 5V RANGE

REF

)

CLK

CH0

LTC1091

OUT

CH1

GND

4.7µF

P1.4

P1.3

P1.2

SERIAL DATA LINK

= 5V

1.00

MPU

(e.g., 8051)

0.75

0.50

0.25

1091 TA01

FOR 8051 CODE SEE

APPLICATIONS INFORMATION

SECTION

REFERENCE VOLTAGE (V)

1091 TA02

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