LTC1291DCN8

Product Summary

Description:The LTC1291 is a data acquisition system that contains a serial I/O successive approximation A/D converter. It uses
LTCMOSTM switched capacitor technology to perform a 12-bit unipolar A/D conversion. The input multiplexer can be configured for either single-ended or differential inputs. An on-chip sample-and-hold is included on the “+”
input. When the LTC1291 is idle, it can be powered down in applications where low power consumption is desired. An external reference is not required because the LTC1291
takes its reference from the power supply (VCC). All these features are packaged in an 8-pin DIP. The serial I/O is designed to communicate without external
hardware to most MPU serial ports and all MPU parallel I/O ports allowing data to be transmitted over three or four wires. Given the accuracy, ease of use and small packagesize, this device is well suited for digitizing analog signals
in remote applications where minimum number of interconnects, small physical size, and low power consumption are important

Parametrics

Absolute maximum ratings:
Supply Voltage (VCC) to GND.................................. 12V
Voltage
Analog Inputs ............................ –0.3V to VCC + 0.3V
Digital Inputs........................................ –0.3V to 12V
Digital Outputs .......................... –0.3V to VCC + 0.3V
Power Dissipation ............................................. 500mW
Operating Temperature Range
LTC1291BC, LTC1291CC,
LTC1291DC ............................................ 0°C to 70°C
LTC1291BI, LTC1291CI,
LTC1291DI ........................................ –40°C to 85°C
LTC1291BM, LTC1291CM,
LTC1291DM ...................................  –55°C to 125°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................ 300℃

Features

FEATURES 
(1) Built-In Sample-and-Hold; 
(2) Single Supply 5V Operation; 
(3) Power Shutdown; 
(4) Direct 3- or 4-Wire Interface to Most MPU Serial Ports and All MPU Parallel Ports; 
(5) Two-Channel Analog Multiplexer; 
(6) Analog Inputs Common Mode to Supply Rails; 
(7) 8-Pin DIP Package