Overview
The AD7846BPZ is a 16-bit voltage output Digital-to-Analog Converter (DAC) manufactured by Analog Devices Inc. It is constructed using the LC2MOS process, which ensures high accuracy and reliability. The DAC features VREF+ and VREF− reference inputs and an on-chip output amplifier, allowing for both unipolar and bipolar output ranges. The unipolar output ranges include 0 V to +5 V and 0 V to +10 V, while the bipolar output ranges include ±5 V and ±10 V. This device is particularly suited for applications requiring high precision and monotonicity over temperature.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 16 bits | ||
| Output Range (Unipolar) | 0 V to +5 V, 0 V to +10 V | ||
| Output Range (Bipolar) | ±5 V, ±10 V | ||
| Power Dissipation | 100 mW | Typical | |
| Input High Voltage (VIH) | 2.4 V min | V | |
| Input Low Voltage (VIL) | 0.8 V max | V | |
| Input Current (IIN) | ±10 μA max | μA | |
| Input Capacitance (CIN) | 10 pF max | pF | |
| Output Low Voltage (VOL) | 0.4 V max | V | ISINK = 1.6 mA |
| Output High Voltage (VOH) | 4.0 V min | V | ISOURCE = 400 μA |
| Operating Temperature Range | -40°C to +85°C | °C | Commercial |
Key Features
- 16-Bit Monotonicity: Guaranteed monotonicity over temperature, making it ideal for closed-loop applications.
- Readback Function: Ability to read back the DAC register contents, which minimizes software routines in ATE systems.
- Low Power Consumption: Power dissipation of 100 mW, making it one of the lowest power, high accuracy DACs on the market.
- Comprehensive Microprocessor Interface: Includes 16 data I/O pins and control lines (CS, R/W, LDAC, and CLR) for writing to and reading from the I/O latch.
- Segmented Architecture: Uses a segmented architecture with a 16-resistor string and buffer amplifiers to ensure 16-bit resolution and excellent integral linearity.
- Output Amplifier: On-chip output amplifier configurable for various output ranges.
- Package Options: Available in 28-lead plastic, ceramic, and PLCC packages.
Applications
- Automated Test Equipment (ATE): The readback function and high accuracy make it suitable for ATE applications.
- Closed-Loop Systems: Ideal for applications requiring high precision and monotonicity over temperature.
- Industrial Control Systems: Can be used in various industrial control systems due to its robust specifications and low power consumption.
- Medical Devices: Suitable for medical devices that require precise and reliable analog output.
- Aerospace and Defense: Used in applications where high accuracy and reliability are critical.
Q & A
- What is the resolution of the AD7846BPZ DAC?
The AD7846BPZ has a resolution of 16 bits.
- What are the output ranges of the AD7846BPZ?
The output ranges include unipolar (0 V to +5 V, 0 V to +10 V) and bipolar (±5 V, ±10 V) configurations.
- What is the power dissipation of the AD7846BPZ?
The power dissipation is typically 100 mW.
- Does the AD7846BPZ have a readback function?
- What types of packages are available for the AD7846BPZ?
- What is the operating temperature range of the AD7846BPZ?
- How does the segmented architecture of the AD7846BPZ ensure high accuracy?
- Can the AD7846BPZ be used in multi-DAC systems?
- How can the DAC output be reset in the AD7846BPZ?
- What are some typical applications of the AD7846BPZ?
