AD573

The AD573 is a complete 10-bit successive approximation analog-to-digital converter consisting of a DAC, voltage reference, clock, comparator, successive approximation register (SAR) and three state output buffers-all fabricated on a single chip. No external components are required to perform a full accuracy 10-bit conversion in 20 s.

The AD573 incorporates advanced integrated circuit design and processing technologies. The successive approximation function is implemented with I²L (integrated injection logic). Laser trimming of the high stability SiCr thin-film resistor ladder network insures high accuracy, which is maintained with a temperature compensated subsurface Zener reference.

Operating on supplies of +5 V and 12 V to 15 V, the AD573 will accept analog inputs of 0 V to +10 V or 5 V to +5 V. The trailing edge of a positive pulse on the CONVERT line initiates the 20 ms conversion cycle.DATA READY indicates completion of the conversion. HIGH BYTE ENABLE (HBE) and LOW BYTE ENABLE (LBE) control the 8-bit and 2-bit three state output buffers.

The AD573 is available in two versions for the 0°C to +70°C temperature range, the AD573J and AD573K. The AD573S  guarantees ±1 LSB relative accuracy and no missing codes from 55°C to +125°C.

Three package configurations are offered. All versions are offered in a 20-pin hermetically sealed ceramic DIP. The AD573J and AD573K are also available in a 20-pin plastic DIP or 20-pin leaded chip carrier.