The AD7575 is a high-speed 8-bit ADC with a built-in track/hold function. The successive approximation conversion technique is used to achieve a fast conversion time of 5 µs, while the built-in track/hold allows full-scale signals up to 50 kHz (386 mV/µs slew rate) to be digitized. The AD7575 requires only a single +5 V supply and a low-cost, 1.23 V bandgap reference in order to convert an input signal range of 0 to 2 VREF. The AD7575 is designed for easy interfacing to all popular 8-bit microprocessors using standard microprocessor control signals (CS and RD) to control starting of the conversion and reading of the data. The interface logic allows the AD7575 to be easily configured as a memory-mapped device, and the part can be interfaced as SLOW-MEMORY or ROM. All data outputs of the AD7575 are latched and three-state buffered to allow direct connection to a microprocessor data.
The AD7575 is a high‑speed 8‑bit analog‑to‑digital converter with an on‑chip track‑and‑hold function. It operates from a single +5 V supply and offers fast conversion times, low power consumption, and a variety of interface options for popular microprocessors.
The document provides detailed specifications, timing diagrams, pin configurations, and application notes for both slow‑memory and ROM interfaces, as well as guidance on clocking, power requirements, and absolute maximum ratings.
| Resolution | 8 bits |
|---|---|
| Total Unadjusted Error | ≤ 1 LSB |
| Supply Voltage | +5 V (single supply) |
| Power Dissipation | 15 mW typ |
| Slew Rate (Tracking) | 0.386 V/s max |
| Analog Input Voltage Range | 0 V to 2 V |
| External Clock Frequency | up to 4 MHz |
The AD7575 has a fast conversion time of 5 ps.
It operates from a single +5 V supply.
The input voltage range is 0 V to 2 V.