Overview
The AD5327BRUZ from Analog Devices Inc. is a quad 12-bit buffered voltage-output Digital-to-Analog Converter (DAC) housed in a 16-lead Thin Shrink Small Outline Package (TSSOP). This device operates from a single power supply ranging from 2.5V to 5.5V and consumes a low current of 400 μA at 3V and 500 μA at 5V. It features on-chip rail-to-rail output buffer amplifiers and supports various serial interfaces including SPI, QSPI, MICROWIRE, and DSP. The AD5327BRUZ is designed for applications requiring high precision and low power consumption, making it suitable for a variety of industrial and portable electronic devices.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 12 | 12 | 12 | Bits | |
| Relative Accuracy | ±2 | ±16 | LSB | A version: ±10 LSB | |
| Differential Nonlinearity | ±0.05 | ±0.5 | LSB | ||
| Output Voltage Settling Time | 8 | 10 | μs | 1/4 scale to 3/4 scale change | |
| Slew Rate | 0.7 | V/μs | |||
| Power Supply Range | 2.5 | 5.5 | V | ||
| Operating Current | 400 | 500 | μA | At 3V and 5V respectively | |
| Power Down Current | 90 | 300 | nA | At 3V and 5V respectively | |
| Operating Temperature Range | -40 | 105 | °C |
Key Features
- Quad 12-bit buffered voltage-output DACs in a 16-lead TSSOP package.
- Low power operation: 400 μA at 3 V, 500 μA at 5 V.
- Guaranteed monotonic by design over all codes.
- Power down to 90 nA at 3 V, 300 nA at 5 V (LDAC pin).
- Double-buffered input logic and buffered/unbuffered reference input options.
- Output range: 0 V to VREF or 0 V to 2 VREF, power-on reset to 0 V.
- Simultaneous update of outputs using the LDAC pin and asynchronous clear facility using the CLR pin.
- Supports SPI, QSPI, MICROWIRE, and DSP serial interfaces with clock rates up to 30 MHz.
- On-chip rail-to-rail output buffer amplifiers with a slew rate of 0.7 V/μs.
Applications
- Portable battery-powered instruments.
- Digital gain and offset adjustment.
- Programmable voltage and current sources.
- Programmable attenuators.
- Industrial process control.
Q & A
- What is the resolution of the AD5327BRUZ DAC?
The AD5327BRUZ has a resolution of 12 bits. - What is the operating power supply range of the AD5327BRUZ?
The operating power supply range is from 2.5V to 5.5V. - What is the typical operating current of the AD5327BRUZ at 3V and 5V?
The typical operating current is 400 μA at 3V and 500 μA at 5V. - What are the supported serial interfaces for the AD5327BRUZ?
The AD5327BRUZ supports SPI, QSPI, MICROWIRE, and DSP serial interfaces. - What is the slew rate of the on-chip output buffer amplifiers?
The slew rate is 0.7 V/μs. - Can the outputs of the DACs be updated simultaneously?
Yes, the outputs can be updated simultaneously using the LDAC pin. - What is the power-down current of the AD5327BRUZ at 3V and 5V?
The power-down current is 90 nA at 3V and 300 nA at 5V. - What is the operating temperature range of the AD5327BRUZ?
The operating temperature range is from -40°C to +105°C. - Does the AD5327BRUZ have a power-on reset feature?
Yes, it has a power-on reset circuit that ensures the DAC outputs power up to 0V. - Can the reference inputs be configured as buffered or unbuffered?
Yes, the reference inputs can be configured as either buffered or unbuffered.
