ADS7813

ADS7813 ADS7813 ADS7813 SBAS043C – MARCH 1997 – REVISED SEPTEMBER 2005 Low-Power, Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER FEATURES q 20µs max CONVERSION TIME q SINGLE +5V SUPPLY OPERATION q PIN-COMPATIBLE WITH 12-BIT ADS7812 q EASY-TO-USE SERIAL INTERFACE q 0.3" DIP-16 AND SO-16 q ±2.0LSB max INL q 87dB min SINAD q USES INTERNAL OR EXTERNAL REFERENCE q MULTIPLE INPUT RANGES q 35mW max POWER DISSIPATION q NO MISSING CODES q 50µW POWER DOWN MODE DESCRIPTION The ADS7813 is a low-power, single +5V supply, 16-bit sampling analog-to-digital (A/D) converter. It contains a complete 16-bit capacitor-based SAR A/D with a sample/hold, clock, reference, and serial data interface. The converter can be configured for a variety of input ranges including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high impedance 0.3V to 2.8V input range is also available (input impedance > 10MΩ). For most input ranges, the input voltage can swing to +16.5V or –16.5V without damage to the converter. A flexible SPI-compatible serial interface allows data to be synchronized to an internal or external clock. The ADS7813 is specified at a 40kHz sampling rate over the –40°C to +85°C temperature range. It is available in a 0.3" DIP-16 or an SO-16 package. APPLICATIONS q MEDICAL INSTRUMENTATION q DATA ACQUISITION SYSTEMS q ROBOTICS q INDUSTRIAL CONTROL q TEST EQUIPMENT q DIGITAL SIGNAL PROCESSING q DSP SERVO CONTROL R1IN R2IN 40kΩ(1) 8kΩ(1) R3IN 20kΩ(1) BUF CAP REF BUSY PWRD CONV CS ...