AD8804ARUZ-REEL

Overview

The AD8804ARUZ-REEL is a 12-channel, 8-bit TrimDAC manufactured by Analog Devices Inc. in a TSSOP-20 package. It provides independent digitally-controllable voltage outputs with a settling time of 600 ns and a supply range of 2.7 V to 5.5 V. The device features a 3-wire SPI compatible serial interface and includes a separate VREFL pin for zero-scale setting. Power consumption is 10 μA at 5 V, dropping to under 55 mW in shutdown mode while maintaining latch settings.

Feature Summary

• 12 independent 8-bit DAC channels with individually programmable outputs
• Separate VREFL pin allows independent zero-scale voltage setting
• Power shutdown mode reduces current to <10 μA while preserving data
• 3-Wire SPI compatible serial interface with fast loading capability

Applications

• Video and audio equipment gain and offset adjustment
• CRT computer graphic display geometric correction
• Portable and battery-operated equipment power management
• Potentiometer replacement in DC voltage adjustment circuits

Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging rather than tube. Confirm the RU designation corresponds to the 1 mm thin TSSOP-20 package. Ensure the component meets the -40°C to +85°C operating temperature range specified for this variant.

Selection Notes

Select the AD8804 over the AD8802 when independent control of both top and bottom ends of the potentiometer divider is required. The AD8804 utilizes the VREFL pin to optimize resolution for devices with limited allowable voltage control ranges. Verify that the external reference voltages do not exceed the VDD supply limits.

Part Context

This component belongs to the AD8802/AD8804 family of 12-channel TrimDACs. The AD8804 variant specifically adds the VREFL pin compared to the AD8802's midscale preset architecture. Both share identical digital interfaces and physical dimensions within the 20-lead package options.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.