Overview
The AD8801AR, manufactured by Analog Devices Inc., is an octal 8-bit digital-to-analog converter (DAC) known as the TrimDAC®. This component is designed to provide eight digitally controlled DC voltage outputs, making it an ideal replacement for mechanical trimmers in various applications. The AD8801AR features a serial interface for easy programming by microcontrollers and includes a mid-scale preset, which is beneficial for applications requiring adjustments from a nominal value.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Category | Digital to Analog Converters (DAC) |
| Package | 16-SOIC (0.154", 3.90mm Width) |
| Number of Bits | 8 |
| Number of D/A Converters | 8 |
| Settling Time | 600ns (Typ) |
| Output Type | Voltage - Unbuffered |
| Differential Output | No |
| Data Interface | SPI |
| Reference Type | External |
| Voltage - Supply, Analog | 2.7 V ~ 5.5 V |
| Voltage - Supply, Digital | 2.7 V ~ 5.5 V |
| INL/DNL (LSB) | ±0.5, ±0.25 |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
Key Features
- Easily programmed by serial interfaced microcontroller ports.
- Mid-scale preset for adjustments starting at a nominal value.
- Eight voltage output digital-to-analog converters sharing a common reference voltage input.
- Each DAC has its own DAC register that holds its output state.
- Consumes only 5 mA from 5 V power supplies; reduced to 5 µA in shutdown mode.
- Available in 16-pin plastic SOIC packages.
- ROHS3 compliant and meets various environmental standards.
Applications
- Gain control of video amplifiers.
- Voltage controlled frequencies and bandwidths in video equipment.
- Geometric correction and automatic adjustment in CRT computer graphic displays.
- Replacement of mechanical trimmers in various electronic designs.
- DC voltage adjustment applications.
Q & A
- What is the AD8801AR used for?
The AD8801AR is used as an octal 8-bit digital-to-analog converter, ideal for replacing mechanical trimmers and providing digitally controlled DC voltage outputs.
- What is the package type of the AD8801AR?
The AD8801AR is available in a 16-pin SOIC package.
- What is the settling time of the AD8801AR?
The settling time of the AD8801AR is typically 600ns.
- What is the data interface of the AD8801AR?
The AD8801AR uses a SPI (Serial Peripheral Interface) for data communication.
- What is the operating temperature range of the AD8801AR?
The operating temperature range of the AD8801AR is -40°C to 85°C.
- Is the AD8801AR ROHS compliant?
- What is the power consumption of the AD8801AR?
The AD8801AR consumes 5 mA from a 5 V power supply and reduces to 5 µA in shutdown mode.
- How many D/A converters does the AD8801AR have?
The AD8801AR has eight D/A converters.
- What type of output does the AD8801AR provide?
The AD8801AR provides unbuffered voltage outputs.
- Is the AD8801AR still in production?
Although the AD8801AR is listed as obsolete in some sources, it is still available from various distributors and is considered to be in production in certain contexts.
