Overview
The AD7841ASZ, produced by Analog Devices Inc., is an octal 14-bit, parallel input, voltage-output Digital-to-Analog Converter (DAC). This device integrates eight 14-bit DACs on a single monolithic chip, offering output voltages with a full-scale range of ±10 V from reference voltages of ±5 V. The AD7841ASZ is designed for high precision and reliability, making it suitable for a variety of applications requiring multiple analog outputs.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 14 | Bits | |
| Relative Accuracy | ±4 LSB max | ||
| Differential Nonlinearity | ±1 LSB max | Guaranteed Monotonic Over Temperature for All Grades | |
| Output Voltage Settling Time | 31 µs typ | Full-Scale Change to ±1/2 LSB | |
| Slew Rate | 0.7 V/µs typ | Digital-to-Analog Glitch Impulse | |
| Channel-to-Channel Isolation | 99 dB typ | See Terminology | |
| DAC-to-DAC Crosstalk | 40 dB typ | ||
| Package | 44-Lead MQFP | ||
| Logic Power Supply | 5 V ± 5% | ||
| Operating Temperature Range | -40°C to 85°C |
Key Features
- Eight 14-bit DACs on a single monolithic chip.
- Output voltages with a full-scale range of ±10 V from reference voltages of ±5 V.
- Buffered outputs with gain-of-two amplifiers, allowing external DAC offset voltage insertion via DUTGND pins.
- Parallel 14-bit data input, with data loading controlled by WR, CS, and DAC address pins (A0-A2).
- Asynchronous clear function to set all analog outputs to an externally defined voltage.
- High accuracy and monotonicity over temperature.
- Low digital-to-analog glitch impulse and high channel-to-channel isolation.
Applications
- Automatic Test Equipment
- Process Control
- General Purpose Instrumentation
Q & A
- What is the resolution of the AD7841ASZ DAC?
The AD7841ASZ has a resolution of 14 bits.
- What is the full-scale output voltage range of the AD7841ASZ?
The full-scale output voltage range is ±10 V from reference voltages of ±5 V.
- How is data loaded into the AD7841ASZ?
Data is loaded in parallel 14-bit wide words, controlled by the WR, CS, and DAC address pins (A0-A2).
- What is the package type of the AD7841ASZ?
The AD7841ASZ is available in a 44-Lead MQFP package.
- Can the AD7841ASZ be cleared to a specific voltage?
Yes, the AD7841ASZ has an asynchronous clear function that sets all analog outputs to an externally defined voltage via the DUTGND pins.
- What are the typical operating conditions for the AD7841ASZ?
The typical operating conditions include VCC = 5 V ± 5%, VDD = 15 V ± 10%, VSS = -15 V ± 10%, and GND = DUTGND = 0 V.
- What is the slew rate of the AD7841ASZ?
The slew rate is 0.7 V/µs typical.
- Is the AD7841ASZ guaranteed to be monotonic over temperature?
Yes, the AD7841ASZ is guaranteed to be monotonic over temperature for all grades.
- What are some common applications of the AD7841ASZ?
Common applications include Automatic Test Equipment, Process Control, and General Purpose Instrumentation.
- How many DACs are integrated on the AD7841ASZ chip?
The AD7841ASZ integrates eight 14-bit DACs on a single monolithic chip.
