The AD571 is a 10-bit successive approximation A/D converter that includes a DAC, voltage reference, clock, comparator, successive approximation register, and output buffers, all fabricated on a single chip. It can perform a full accuracy 10-bit conversion in 40 microseconds without the need for external components. The AD571 operates on supply voltages of +5V to +15V and -15V, and accepts analog inputs of 0V to +10V unipolar or ±5V bipolar, which can be externally selected. The conversion is initiated by driving the BLANK and CONVERT input low, and the output data is available when the conversion is completed.
The AD571 is a complete 10‑bit A/D converter that integrates a DAC, voltage reference, clock, comparator, SAR and output buffers on a single chip. It operates from a +5 V and –15 V supply and offers both unipolar (0 V to +10 V) and bipolar (‑5 V to +5 V) input ranges.
The device provides fast conversion (40 ps max), low power consumption (≈150 mW standby) and a variety of control modes, including convert‑pulse and multiplex modes, making it suitable for microprocessor‑based data acquisition systems.
| Resolution | 10 Bits |
|---|---|
| Supply Voltage (V+) | +5.0 V |
| Supply Voltage (V‑) | -12 V to -15 V |
| Conversion Time | 40 ps max |
| Operating Current (V+) | 7 mA |
| Temperature Range (AD571J/K) | 0°C to +70°C |
The AD571 converts in as little as 40 ps (maximum).
It supports a unipolar 0 V to +10 V range and a bipolar –5 V to +5 V range using the bipolar offset control pin.