描述 Description

The ADS8512 is a complete low-power, single 5-V supply, 12-bit sampling analog-to-digital(A/D) converter. It contains a complete 12-bit capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold (S/H), clock, reference, and serial data interface. The converter can be configured for a variety of input ranges including ±10 V, ±5 V, 0 V to 10 V, and 0.5 V to 4.5 V. A high-impedance, 0.3-V to 2.8-V input is also available with input impedance greater than 10 MΩ. For most input ranges, the input voltage can swing to 25 V or -25 V without damage to the converter.
AnSPI-compatible serial interface allows data to be synchronized to an internal or external clock. The ADS8512 is specified at 40-kHz sampling rate over the -40°C to +85°C industrial temperature range.

特性 Features

? 40-kHz Minimum SamplingRate
? Very Low Power: 25 mW
? ±3.33-V, ±5-V, ±10-V, 4-V, and 10-V Input Ranges
? 73.9-dB SINAD with 10-kHz Input
? ±0.5 LSB Max INL
? ±0.5 LSB Max DNL, 12-Bit NMC
? ±5-mV BPZ, ±2 ppm/°C BPZ Drift
? 72-dB Min SINAD, 80-dB Min SFDR
? Uses Internal or External 2.5-V Reference
? No External Calibration Resistors Required
? Single 5-V Analog Supply:
- 32.5-mW Max Power Dissipation
? 50-μW Max Power-Down Mode
? SPI-Compatible Serial Port up to 20MHz, with Master/Slave Feature
? Global CONV and 3-Stated Bus for Multi-Chip Simultaneous S/H Operation
? Pin-Compatible with ADS7812 and 16-Bit ADS7813/8513
? SO-16 Package
? APPLICATIONS
- Industrial Process Control
? Test Equipment
? Robotics
? DSP Servo Control
? Medical Instrumentation
? Portable Data Acquisition Systems