AD7569/AD7669 is a complete, 8-bit, analog I/O system on a single monolithic chip. It contains a high speed successive approximation ADC, a track/hold, a DAC and an output buffer amplifier, as well as a temperature-compensated 1.25 V bandgap reference that provides a precision reference voltage.
The AD7569 and AD7669 are monolithic 8‑bit analog I/O devices that integrate a successive‑approximation ADC, DAC, track/hold circuitry, and a fast bus interface for microprocessor connectivity. They operate from a single 5 V supply or dual ±5 V supplies and provide programmable input and output voltage ranges.
The devices are offered in multiple packages (24‑pin DIP, 24‑terminal SOIC, 28‑terminal PLCC, LCCC) and cover a wide temperature range (0 °C to +70 °C for J/K versions). Detailed specifications include resolution, error, SNR, conversion timing, and power requirements, making them suitable for DSP and control applications.
| Resolution | 8 bits |
|---|---|
| Total Unadjusted Error | ±2 LSB typ |
| Signal‑to‑Noise Ratio (SNR) | 44 dB min |
| Conversion Time (External Clock) | 2 ns max |
| Supply Voltage | Single or Dual 5 V supplies |
Both devices have an 8‑bit resolution.
The conversion time is up to 2 ns when using an external clock.
The AD7569 is offered in a 24‑pin DIP, 24‑terminal SOIC, 28‑terminal PLCC, and LCCC packages.
J and K versions operate from 0 °C to +70 °C.