AD571

a FEATURES Complete A/D Converter with Reference and Clock Fast Successive Approximation Conversion: 40 ␮ s max No Missing Codes Over Temperature 0 ؇ C to +70؇ C: AD571K –55؇ C to +125؇C: AD571S Digital Multiplexing: Three-State Outputs 18-Pin Ceramic DIP Low Cost Monolithic Construction V+ 10 10-Bit A/D Converter AD571* FUNCTIONAL BLOCK DIAGRAM V– 12 5k DIGITAL COMMON 16 BLANK & CONVERT CONTROL 11 B&C ANALOG 13 IN ANALOG 14 COMMON 9 MSB 8 7 10-BIT SAR 10-BIT CURRENT OUTPUT DAC INT. CLOCK 6 5 4 3 2 COMPARATOR BIT OUTPUTS BIPOLAR OFFSET 15 CONTROL DATA READY 1 18 LSB 3 STATE BUFFERS AUTO BLANK CONTROL PRODUCT DESCRIPTION The AD571 is an 10-bit successive approximation A/D converter consisting of a DAC, voltage reference, clock, comparator, successive approximation register and output buffers—all fabricated on a single chip. No external components are required to perform a full accuracy 10-bit conversion in 40 µs. Operating on supplies of +5 V to +15 V and –15 V, the AD571 will accepts analog inputs of 0 V to +10 V unipolar of ± 5 V bipolar, externally selectable. When the BLANK and CONVERT input is driven low, the three-state outputs will be open and a conversion will commence. Upon completion of the conversion, the DATA READY line goes low and the data appears at the output. Pulling the BLANK and CONVERT input high blanks the outputs and readies the device for the next conversion. The AD571 executes a true 10-bit conversion with no missing codes in 40 µs maximu...