Overview
The DAC8841FSZ from Analog Devices Inc. is an 8-bit, octal, 2-quadrant digital-to-analog converter (DAC) designed for a variety of applications requiring precise digital control over analog signals. This device is part of the TrimDAC® series, which replaces mechanical trimmers in new designs. It operates from a single +5V supply and is ideal for ac or dc gain control of up to 1 MHz bandwidth signals. The DAC8841FSZ features eight individual voltage output channels, each with its own DAC register and separate reference inputs, making it versatile for dynamic level adjustments and special waveform generation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of D/A Converters | 8 | |
| Number of Bits | 8 | |
| Output Type | Voltage - Buffered | |
| Reference Type | External | |
| Voltage - Supply, Digital | 5V | |
| Voltage - Supply, Analog | 5V | |
| Settling Time | 6µs | |
| Operating Temperature | -40°C ~ 85°C | |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) | |
| Architecture | R-2R | |
| INL/DNL (LSB) | ±0.5, ±1 (Max) | |
| Data Interface | SPI | |
| Mounting Type | Surface Mount |
Key Features
- Replaces 8 potentiometers, ideal for trimmer replacement in new designs.
- Operates from a single +5V supply.
- 1 MHz 2-quadrant multiplying bandwidth with no signal inversion.
- Eight individual voltage output channels with separate reference inputs.
- 3-wire serial input interface (SPI compatible).
- 500 kHz update data loading rate.
- +3V output swing with midscale preset.
- Low power dissipation of 95 mW.
- Internal amplifier can drive up to 1 kΩ loads in parallel with 200 pF.
Applications
- Trimmer replacement in new designs.
- Dynamic level adjustment.
- Special waveform generation and modulation.
- Programmable gain amplifiers.
- AC or DC gain control of up to 1 MHz bandwidth signals.
Q & A
- What is the primary function of the DAC8841FSZ?
The DAC8841FSZ is an 8-bit, octal, 2-quadrant digital-to-analog converter designed to replace mechanical trimmers and provide precise digital control over analog signals.
- What is the operating voltage range for the DAC8841FSZ?
The device operates from a single +5V supply for both digital and analog sections.
- How many D/A converters does the DAC8841FSZ have?
The DAC8841FSZ contains eight individual D/A converters.
- What is the settling time of the DAC8841FSZ?
The settling time is 6µs.
- What is the operating temperature range of the DAC8841FSZ?
The operating temperature range is -40°C to +85°C.
- What type of data interface does the DAC8841FSZ use?
The device uses a 3-wire serial input interface compatible with SPI.
- How many bits per D/A converter does the DAC8841FSZ have?
Each D/A converter is 8 bits.
- What is the architecture of the DAC8841FSZ?
The architecture is R-2R.
- Is the DAC8841FSZ lead-free and RoHS compliant?
Yes, the DAC8841FSZ is lead-free and RoHS compliant.
- What is the typical power dissipation of the DAC8841FSZ?
The typical power dissipation is 95 mW.
