Overview
The AD8802ARU-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 part of the AD8802/AD8804 series and is housed in a compact 20-lead TSSOP package. It is ideal for replacing mechanical trimmers in new designs, particularly in applications requiring dc voltage adjustments. The AD8802 can be easily programmed via a serial interface connected to microcontroller ports, making it suitable for various applications such as gain control in video amplifiers, voltage-controlled frequencies, and geometric correction in CRT computer graphic displays.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 12 | - |
| Resolution | 8-bit | - |
| Package Type | TSSOP-20 | - |
| Operating Voltage | +3 V to +5 V | V |
| Power Consumption (Active) | 10 µA | µA |
| Power Consumption (Shutdown) | 10 µA | µA |
| Output Voltage Range | Determined by VREFH and VREFL pins | V |
| Settling Time | 0.6 µs | µs |
| Crosstalk Between Adjacent Outputs | 50 dB | dB |
Key Features
- Low cost and replaces up to 12 potentiometers
- Individually programmable outputs
- 3-wire SPI compatible serial input
- Power shutdown feature with low power consumption (<55 µWatts including IDD & IREF)
- Midscale preset for the AD8802
- Separate VREFL range setting for the AD8804
- 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
Q & A
- What is the AD8802ARU-REEL used for?
The AD8802ARU-REEL is used for providing independent digitally-controllable voltage outputs, replacing mechanical trimmers in various applications.
- What is the resolution of the AD8802ARU-REEL?
The resolution of the AD8802ARU-REEL is 8-bit.
- What are the operating voltage ranges for the AD8802ARU-REEL?
The operating voltage ranges are from +3 V to +5 V.
- How many channels does the AD8802ARU-REEL have?
The AD8802ARU-REEL has 12 channels.
- What is the power consumption of the AD8802ARU-REEL in active and shutdown modes?
In both active and shutdown modes, the power consumption is 10 µA.
- What is the settling time of the AD8802ARU-REEL?
The settling time is 0.6 µs.
- What is the crosstalk between adjacent outputs of the AD8802ARU-REEL?
The crosstalk between adjacent outputs is 50 dB.
- Can the AD8802ARU-REEL be programmed via a serial interface?
- What are some common applications of the AD8802ARU-REEL?
- What package types are available for the AD8802?
The AD8802 is available in PDIP-20, SOIC-20, and TSSOP-20 packages.
