TC7109A Datasheet | Microchip Technology

TC7109/A 12-Bit A-patible 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 patible, 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 ponents and a crystal are required to form a plete 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...