Overview
The AD8804ARZ from Analog Devices Inc. is a 12-channel, 8-bit digital-to-analog converter (DAC) designed to provide independent digitally-controllable voltage outputs. This component is part of the TrimDAC® series and is ideal for replacing mechanical trimmers in various applications. It features a compact 20-lead package and supports single-supply operation from 2.7V to 5.5V. The AD8804ARZ is particularly useful in applications requiring precise voltage adjustments, such as gain control in video and audio equipment, geometric correction in CRT displays, and automatic adjustments in various electronic devices.
Key Specifications
| Parameter | Value |
|---|---|
| Number of D/A Converters | 12 |
| Number of Bits | 8 |
| Settling Time | 600ns (Typ) |
| Output Type | Voltage - Unbuffered |
| Data Interface | SPI |
| Reference Type | External |
| Voltage - Supply, Analog/Digital | 2.7V ~ 5.5V |
| INL/DNL (LSB) | ±0.5, ±0.25 |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
Key Features
- Low cost and compact design, replacing up to 12 potentiometers.
- Individually programmable outputs with 3-wire SPI compatible serial input.
- Midscale preset available on the AD8802 model, and separate VREFL range setting on the AD8804 model.
- Power shutdown feature reducing power consumption to less than 55 μW, including IDD and IREF.
- Single-supply operation from 2.7V to 5.5V.
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.
- Portable and battery-operated equipment due to low power consumption.
Q & A
- What is the AD8804ARZ used for? The AD8804ARZ is used for providing independent digitally-controllable voltage outputs, often replacing mechanical trimmers in various applications.
- How many channels does the AD8804ARZ have? The AD8804ARZ has 12 channels.
- What is the resolution of the AD8804ARZ? The AD8804ARZ has an 8-bit resolution.
- What is the typical settling time of the AD8804ARZ? The typical settling time is 600ns.
- What type of data interface does the AD8804ARZ use? The AD8804ARZ uses a 3-wire SPI compatible serial input.
- What is the operating temperature range of the AD8804ARZ? The operating temperature range is -40°C to 85°C.
- What package types are available for the AD8804ARZ? The AD8804ARZ is available in 20-SOIC and other surface mount packages.
- Does the AD8804ARZ support power shutdown? Yes, the AD8804ARZ has a power shutdown feature that reduces power consumption.
- What is the supply voltage range for the AD8804ARZ? The supply voltage range is from 2.7V to 5.5V.
- Is the AD8804ARZ RoHS compliant? Yes, the AD8804ARZ is RoHS compliant.
