AD7569JNZ

ADCs/DACs - Special Purpose Overview

The AD7569JNZ is an 8-bit analog I/O system on a single monolithic chip, featuring a successive approximation ADC with a 2 µs conversion time and a DAC with a 1 µs settling time. It includes an on-chip track/hold with 200 kHz bandwidth and a temperature-compensated 1.25 V bandgap reference. The device supports single or dual 5 V supplies, enabling unipolar (0 to +1.25 V/+2.5 V) or bipolar (±1.25 V/±2.5 V) ranges via the RANGE pin. Digital interfacing uses an 8-bit parallel port compatible with standard microprocessors.

ADCs/DACs - Special Purpose Feature Summary

• Complete 8-bit analog I/O system with integrated ADC, DAC, track/hold, and bandgap reference
• Fast bus interface with bus access times less than 75 ns and write pulse width under 80 ns
• Configurable output/input ranges: 0–1.25 V, 0–2.5 V, ±1.25 V, or ±2.5 V
• TTL/CMOS compatible logic levels with internal ESD protection

ADCs/DACs - Special Purpose Applications

• Microprocessor-based data acquisition systems
• Industrial process control loops
• Automotive instrumentation interfaces

ADCs/DACs - Special Purpose Procurement Notes

Verify the J suffix indicates the commercial temperature range of 0°C to +70°C. Confirm the N package option corresponds to the 24-pin skinny DIP. Ensure supply voltage requirements match the specified 4.75 V to 5.25 V range for optimal performance.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7569JNZ for single-channel applications requiring integrated analog input and output. Choose the AD7669 variant if dual DAC outputs are necessary. Verify that the 8-bit resolution and 200 kHz sampling rate meet system dynamic requirements.

ADCs/DACs - Special Purpose Part Context

The AD7569 belongs to the Analog Devices LC2MOS family of complete analog I/O systems. It combines precision bipolar circuits with low-power CMOS logic. The J version specifies the commercial grade operating temperature range, distinguishing it from industrial (A/B) and extended (S/T) variants.

ADCs/DACs - Special Purpose Replacement Considerations

The AD7569KNZ offers higher accuracy (±0.5 LSB relative accuracy) within the same commercial temperature range. For dual DAC functionality, the AD7669 series serves as the direct functional equivalent with additional output channels.