Overview
The AD5790BCPZ from Analog Devices Inc. is a high-precision, single 20-bit, unbuffered voltage-output digital-to-analog converter (DAC). It operates from a bipolar supply of up to 33 V, making it suitable for a variety of precision measurement and control applications. The device features on-chip reference buffers and accepts both positive and negative reference inputs, with a positive reference range of 5 V to VDD - 2.5 V and a negative reference range of VSS + 2.5 V to 0 V. The AD5790BCPZ is known for its high relative accuracy of ±2 LSB and guaranteed monotonic operation with a -1 LSB to +3 LSB differential nonlinearity (DNL) specification.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 20 | bits | |
| Number of Channels | 1 | ||
| Operating Temperature Range | -40 to 125 | °C | |
| Settling Time (typ) | 2.5 µs | ||
| Vout Range | ±Vref | ||
| Interface | SPI, QSPI, MICROWIRE, DSP | Up to 35 MHz clock rate | |
| INL/DNL (LSB) | ±2, -1/+3 | ||
| Voltage Supply (Analog) | 7.5 V to 16.5 V, -2.5 V to -16.5 V | V | |
| Voltage Supply (Digital) | 2.7 V to 5.5 V | V | |
| Package/Case | 24-Lead LFCSP (4mm x 5mm w/ EP) | ||
| RoHS Compliance | Yes |
Key Features
- Precision 20-bit voltage output DAC with ±2 LSB maximum relative accuracy and guaranteed monotonic operation.
- On-chip reference buffers for both positive and negative reference inputs.
- Versatile 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards, operating at clock rates up to 35 MHz.
- Power-on reset circuit ensuring the DAC output powers up to 0 V in a known output impedance state.
- Output clamp feature that places the output in a defined load state.
- Low output impedance and high stability, with DC output impedance of 3.4 kΩ in normal mode and 6 kΩ when output is clamped to ground.
- High precision and low noise, making it suitable for demanding industrial, automotive, and aerospace applications.
Applications
- Data acquisition interfaces.
- Industrial process control systems.
- Scientific data analysis and measurement systems.
- Aerospace and automotive systems requiring precise voltage control and measurement.
- High-precision voltage output applications in various industrial settings.
Q & A
- What is the resolution of the AD5790BCPZ DAC?
The AD5790BCPZ has a resolution of 20 bits.
- What is the operating temperature range of the AD5790BCPZ?
The operating temperature range is -40°C to 125°C.
- What types of serial interfaces does the AD5790BCPZ support?
The AD5790BCPZ supports SPI, QSPI, MICROWIRE, and DSP serial interfaces.
- What is the maximum clock rate for the serial interface?
The maximum clock rate is up to 35 MHz.
- What is the typical settling time for the AD5790BCPZ?
The typical settling time is 2.5 µs.
- Does the AD5790BCPZ have on-chip reference buffers?
Yes, the AD5790BCPZ has on-chip reference buffers for both positive and negative reference inputs.
- What is the relative accuracy specification of the AD5790BCPZ?
The relative accuracy specification is ±2 LSB maximum.
- Is the AD5790BCPZ RoHS compliant?
Yes, the AD5790BCPZ is RoHS compliant.
- What is the package type for the AD5790BCPZ?
The package type is a 24-Lead LFCSP (4mm x 5mm w/ EP).
- What are some common applications for the AD5790BCPZ?
Common applications include data acquisition interfaces, industrial process control, scientific data analysis, and aerospace and automotive systems.
