Overview
The AD8804ARZ-REEL, produced by Analog Devices Inc., is a 12-channel, 8-bit TrimDAC (digital-to-analog converter) designed to provide independent digitally-controllable voltage outputs. This component is housed in a compact 20-lead SOIC package, making it ideal for applications requiring multiple voltage adjustments in a small footprint. The AD8804 is particularly useful for replacing mechanical trimmers in new designs and is easily programmable via a 3-wire SPI-compatible serial interface.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 12 |
| Resolution | 8 bits |
| Package Type | 20-lead SOIC (Wide) |
| Supply Voltage | 2.7 V to 5.5 V |
| Min Output Voltage | 0 V |
| Settling Time | 600 ns (Typical) |
| Interface | 3-wire SPI-compatible serial interface |
| Integral Nonlinearity (INL) | 1.5 LSB |
| Output Resistance | Approximately 5 kΩ |
| Power Consumption | < 55 μW (including IDD & IREF), 10 μA from 5 V in shutdown mode |
Key Features
- Low cost and compact design, replacing up to 12 potentiometers.
- Individually programmable outputs.
- 3-wire SPI-compatible serial input interface.
- Power shutdown feature with low power consumption (< 55 μW).
- Midscale preset available on AD8802 model.
- Separate VREFL range setting on AD8804 model for independent control of the potentiometer divider.
- Single supply operation from +3 V to +5 V.
Applications
- Automatic adjustment and trimmer replacement in various electronic devices.
- Gain and offset adjustment in video and audio equipment.
- Voltage-controlled frequencies and bandwidths in video equipment.
- Geometric correction and automatic adjustment in CRT computer graphic displays.
- Portable and battery-operated equipment requiring precise voltage adjustments.
Q & A
- What is the primary function of the AD8804ARZ-REEL?
The AD8804ARZ-REEL is a 12-channel, 8-bit digital-to-analog converter (DAC) that provides independent digitally-controllable voltage outputs, replacing mechanical trimmers in electronic designs.
- What is the package type of the AD8804ARZ-REEL?
The AD8804ARZ-REEL is housed in a 20-lead SOIC (Wide) package.
- What is the supply voltage range for the AD8804ARZ-REEL?
The supply voltage range is from 2.7 V to 5.5 V.
- How is the AD8804ARZ-REEL programmed?
The AD8804ARZ-REEL is programmed via a 3-wire SPI-compatible serial interface.
- What is the settling time of the AD8804ARZ-REEL?
The settling time is typically 600 ns.
- Does the AD8804ARZ-REEL have a power shutdown feature?
- What is the output resistance of the AD8804ARZ-REEL?
The output resistance is approximately 5 kΩ.
- What are some common applications of the AD8804ARZ-REEL?
- Can the AD8804ARZ-REEL be used in battery-operated devices?
- How many DACs are included in the AD8804ARZ-REEL?
The AD8804ARZ-REEL contains 12 voltage-output digital-to-analog converters.
