ADI LTC1294CCN#PBF

The LTC1293/4/6 is a family of data acquisition systems which contain a serial I/O successive approximation A/D converter. It uses LTCMOSTM switched capacitor technology to perform either 12-bit unipolar, or 11-bit plus sign bipolar A/D conversions. The input multiplexer can be configured for either single ended or differential inputs (or combinations thereof). An on-chip sample and hold is included for all single ended input channels. When the LTC1293/4/6 is idle it can be powered down in applications where low power consumption is desired. The LTC1296 includes a System Shutdown Output pin which can be used to power down external circuitry, such as signal conditioning circuitry prior to the input mux. The serial I/O is designed to communicate without external hardware to most MPU serial ports and all MPU parallel I/O ports allowing up to eight channels of data to be transmitted over as few as three wires.

• Software Programmable Features
• Unipolar/Bipolar Conversion
• Differential/Single Ended Inputs
• MSB-First or MSB/LSB Data Sequence
• Power Shutdown
• Built-In Sample and Hold
• Single Supply 5V or ±5V Operation
• Direct 4-Wire Interface to Most MPU Serial Ports and All MPU Parallel Ports
• 46.5kHz Maximum Throughput Rate
• System Shutdown Output (LTC1296)