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TC7109A

Microchip
Part Number TC7109A
Manufacturer Microchip
Description Analog-to-Digital Converters
Published Aug 16, 2015
Detailed Description TC7109/A 12-Bit A-Compatible Analog-to-Digital Converters Features: • Zero Integrator Cycle for Fast Recovery from Inp...
Datasheet PDF File TC7109A PDF File

TC7109A
TC7109A


Overview
TC7109/A 12-Bit A-Compatible Analog-to-Digital Converters Features: • Zero Integrator Cycle for Fast Recovery from Input Overloads • Eliminates Cross-Talk in Multiplexed Systems • 12-Bit Plus Sign Integrating A/D Converter with Over Range Indication • Sign Magnitude Coding Format • True Differential Signal Input and Differential Reference Input • Low Noise: 15VP-P Typ.
• Input Current: 1pA Typ.
• No Zero Adjustment needed • TTL Compatible, Byte Organized Tri-State Outputs • UART Handshake Mode for simple Serial Data Transmissions Device Selection Table Part Number (TC7109X)* Package Temperature Range TC7109CKW TC7109CLW TC7109CPL TC7109IJL 44-Pin PQFP 44-Pin PLCC 40-Pin PDIP 40-Pin CERDIP 0°C to +70°C 0°C to +70°C 0°C to +70°C -25°C to +85°C *The “A” version has a higher IOUT on the digital lines.
General Description: The TC7109A is a 12-bit plus sign, CMOS low power Analog-to-Digital Converter (ADC).
Only eight passive components and a crystal are required to form a complete dual slope integrating ADC.
The improved VOH source current and other TC7109A features make it an attractive per-channel alternative to analog multiplexing for many data acquisition applications.
These features include typical input bias current of 1pA, drift of less than 1V/°C, input noise typically 15VP-P, and auto-zero.
True differential input and reference allow measurement of bridge type transducers, such as load cells, strain gauges and temperature transducers.
The TC7109A provides a versatile digital interface.
In the Direct mode, Chip Select and HIGH/LOW byte enable control parallel bus interface.
In the Handshake mode, the TC7109A will operate with industry standard UARTs in controlling serial data transmission – ideal for remote data logging.
Control and monitoring of conversion timing is provided by the RUN/HOLD input and Status output.
For applications requiring more resolution, see the TC500, 15-bit plus sign ADC data sheet.
The TC7109A has improved over range recover...


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