器件名称: TC514
功能描述: Precision Analog Front Ends
文件大小: 653.26KB 共34页
简 介:TC500/A/510/514
Precision Analog Front Ends
Features:
Precision (up to 17 bits) A/D Converter “Front End” 3-Pin Control Interface to Microprocessor Flexible: User Can Trade-off Conversion Speed for Resolution Single-Supply Operation (TC510/TC514) 4 Input, Differential Analog MUX (TC514) Automatic Input Voltage Polarity Detection Low Power Dissipation: - (TC500/TC500A): 10 mW - (TC510/TC514): 18 mW Wide Analog Input Range: - ±4.2V (TC500A/TC510) Directly Accepts Bipolar and Differential Input Signals
General Description:
TheTC500/A/510/514 family are precision analog front ends that implement dual slope A/D converters having a maximum resolution of 17 bits plus sign. As a minimum, each device contains the integrator, zero crossing comparator and processor interface logic. The TC500 is the base (16-bit max) device and requires both positive and negative power supplies. The TC500A is identical to the TC500 with the exception that it has improved linearity, allowing it to operate to a maximum resolution of 17 bits. The TC510 adds an onboard negative power supply converter for singlesupply operation. The TC514 adds both a negative power supply converter and a 4-input differential analog multiplexer. Each device has the same processor control interface consisting of 3 wires: control inputs (A and B) and zerocrossing comparator output (CMPTR). The processor manipulates A, B to sequence the TC5XX through four phases of conversion: auto-zero, integrate, de-integrate and inte……
