AD573 Datasheet | Analog Devices

a Features plete 10-Bit A/D Converter with Reference, Clock and parator Full 8- or 16-Bit Microprocessor Bus Interface Fast Successive Approximation Conversion- 20 ␮s typ No Missing Codes Over Temperature Operates on +5 V and - 12 V to - 15 V Supplies Low Cost Monolithic Construction V+ 5k 10-Bit A/D Converter AD573- FUNCTIONAL BLOCK DIAGRAM V- DIGITAL MON CONVERT MSB DB9 DB8 10-BIT CURRENT OUTPUT DAC PARATOR 10-BIT SAR ANALOG IN ANALOG MON DB7 DB6 DB5 HIGH BYTE BIPOLAR OFFSET CONTROL INT CLOCK DB4 DB3 DB2 DB1 DB0 LSB HBE LOW BYTE BURIED ZENER REF DATA READY PRODUCT DESCRIPTION The AD573 is a plete 10-bit successive approximation analog-to-digital converter consisting of a DAC, voltage reference, clock, parator, successive approximation register (SAR) and three state output buffers- all fabricated on a single chip. No external ponents are required to perform a full accuracy 10-bit conversion in 20 µs. 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 Si Cr thin-film resistor ladder network insures high accuracy, which is maintained with a temperature pensated 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 µs conversion cycle. DATA READY indicates pletion 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...