Overview
The AD8802ARUZ-REEL, manufactured by Analog Devices Inc., is a 12-channel, 8-bit TrimDAC (digital-to-analog converter) integrated circuit. This component is designed to provide independent digitally-controllable voltage outputs, making it an ideal replacement for mechanical trimmers in various applications. It operates in a compact 20-lead TSSOP package and is suitable for dc voltage adjustment tasks.
The AD8802 features a midscale preset and power shutdown capabilities, consuming minimal power, especially in shutdown mode. It is easily programmable via a 3-wire SPI-compatible serial interface, allowing for precise control over each of the 12 DAC channels.
Key Specifications
| Parameter | Value |
|---|---|
| Number of D/A Converters | 12 |
| Number of Bits | 8 |
| Supply Voltage (Digital and Analog) | 2.7V to 5.5V |
| Package Type | 20-TSSOP (0.173", 4.40mm Width) |
| Operating Temperature | -40°C to +85°C |
| Settling Time | 600ns (Typical) |
| INL/DNL (LSB) | ±0.5, ±0.25 |
| Data Interface | 3-Wire SPI Compatible |
| Output Type | Voltage - Unbuffered |
| Power Consumption (Shutdown Mode) | < 55 µW (including IDD & IREF) |
Key Features
- Low cost and compact design, ideal for replacing 12 potentiometers.
- Individually programmable outputs with midscale preset (AD8802) and separate VREFL range setting (AD8804).
- 3-Wire SPI compatible serial input interface for easy programming.
- Power shutdown capability with minimal power consumption (< 55 µW).
- Single supply operation from +3 V to +5 V.
- Fast serial-data loading capability of up to 33 MHz.
- R-2R architecture for precise voltage output control.
Applications
- Automatic adjustment and trimmer replacement in various electronic devices.
- Gain and offset adjustment in video and audio equipment.
- Geometric correction and automatic adjustment in CRT computer graphic displays.
- Voltage control in portable and battery-operated equipment.
- Voltage-controlled frequencies and bandwidths in video equipment.
Q & A
- What is the AD8802ARUZ-REEL used for?
The AD8802ARUZ-REEL is used for providing independent digitally-controllable voltage outputs, often replacing mechanical trimmers in various applications.
- How many DAC channels does the AD8802ARUZ-REEL have?
The AD8802ARUZ-REEL has 12 DAC channels.
- What is the resolution of the AD8802ARUZ-REEL?
The AD8802ARUZ-REEL has an 8-bit resolution.
- What is the supply voltage range for the AD8802ARUZ-REEL?
The supply voltage range is from 2.7V to 5.5V.
- What type of package does the AD8802ARUZ-REEL come in?
The AD8802ARUZ-REEL comes in a 20-TSSOP package.
- What is the operating temperature range for the AD8802ARUZ-REEL?
The operating temperature range is from -40°C to +85°C.
- How does the AD8802ARUZ-REEL consume power in shutdown mode?
In shutdown mode, the AD8802ARUZ-REEL consumes less than 55 µW, including IDD and IREF.
- What type of data interface does the AD8802ARUZ-REEL use?
The AD8802ARUZ-REEL uses a 3-Wire SPI compatible serial interface.
- What are some common applications of the AD8802ARUZ-REEL?
Common applications include automatic adjustment, trimmer replacement, gain and offset adjustment in video and audio equipment, and voltage control in portable devices.
- How fast can the AD8802ARUZ-REEL load serial data?
The AD8802ARUZ-REEL can load serial data at a rate of up to 33 MHz.
