AD7225KP-REEL

Overview

The AD7225KP-REEL is a quad 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates four voltage-output DACs with individual buffer amplifiers and separate reference inputs on a single LC2MOS chip. The device features double-buffered microprocessor-compatible interface logic, enabling simultaneous update of all four outputs via the LDAC signal. It supports both single-supply (15 V) and dual-supply operation (VDD: 11.4–16.5 V; VSS: −5 V). Key electrical parameters include a settling time of 4 µs to ±½ LSB, differential nonlinearity of ±1 LSB, and an output slew rate of 2.5 V/µs. The component is housed in a 24-lead Skinny PDIP package.

Feature Summary

• Quad 8-bit architecture with independent reference inputs for each channel
• Double-buffered interface allowing simultaneous update of all four outputs
• Operates with single or dual power supplies
• TTL and CMOS compatible digital inputs

Applications

• Programmable transversal filters
• Digital word multiplication circuits
• Microprocessor-based control systems requiring multi-channel analog output

Procurement Notes

Verify that the ordering suffix REEL indicates tape-and-reel packaging rather than tube packaging when sourcing this specific part number. Confirm the K temperature grade corresponds to the commercial range specifications defined in the datasheet. Ensure compatibility with the required 24-lead Skinny PDIP footprint during procurement planning.

Selection Notes

Select the AD7225KP-REEL when four independent 8-bit voltage outputs are required with simultaneous update capabilities. Choose this variant over other packages if through-hole mounting is necessary. Verify that the system can provide the required 11.4 V to 16.5 V positive supply and optional −5 V negative supply for optimal performance.

Part Context

The AD7225 belongs to the Analog Devices LC2MOS family of high-speed linear-compatible CMOS data converters. This technology allows integration of precision analog circuitry with high-speed digital logic on a single monolithic chip. The KP-REEL designation specifies the commercial temperature grade, Skinny PDIP package, and reel packaging format within the broader AD7225 product line.

Replacement Considerations

The TLC7225 is a functionally similar quad 8-bit DAC from Texas Instruments. Both devices offer four channels with double buffering and simultaneous update. However, verify pinout compatibility and specific electrical parameter differences such as settling time and supply voltage ranges before substitution.