AD3530R: 8-channel, 16-bit voltage output DACs, on-chip reference, SPI
The AD3530/AD3530R are low power, 8-channel, 16-bit, buffered voltage output, digital-to-analog converters (DACs) that include software-programmable gain controls that result in full-scale output spans of 2.5V or 5V for reference voltages of 2.5V.
The AD3530/AD3530R operate from single, 2.7V to 5.5V supply ranges and are guaranteed monotonic by design. The AD3530R also offers a 2.5V, 5ppm/°C internal reference that is disabled by default.
The devices include integrated multiplexers that allow monitoring of output voltages, currents, and internal die temperature. The AD3530/AD3530R are available in 2.1mm × 2.2mm, 25-ball WLCSP packages. The devices incorporate power-on reset (POR) circuits that ensure that the DACs output power up to and present at 32kΩ to ground until a valid write is executed. The DACs also contain power-down modes that reduce the current consumption down to 670μA, typical.
The serial peripheral interface (SPI) and MICROWIRE®-compatible, 4-wire serial interface operates on logic levels as low as 1.08V up to 1.98V and clock rates up to 50MHz.
Key Features and Benefits
- 16-bit resolution, ±3 LSB16 INL, ±1 LSB16 DNL
- TUE: ±0.22% of FSR maximum
- Offset error: ±1.6mV maximum
- Gain error: ±0.26% of FSR maximum
- Guaranteed sourcing current of 50mA
- Ultra-low headroom: 25mV at 20mA load
- 2.5V internal voltage reference, 5ppm/°C, typical
- 62nV/√Hz noise spectral density (external reference)
- 115nV/√Hz noise spectral density (internal reference)
- Output voltage, current, and die temperature monitors
- 50MHz SPI write and read
- 2.7V to 5.5V power supply range
- 1.2V or 1.8V compatible digital interface
- Operating temperature range: −40°C to +125°C
- Small package: 2.1mm × 2.2mm, 25-ball WLCSP
Applications
- Optical transceivers
- Test and measurement
- Industrial automation
- Data acquisition systems
Evaluation Board
The AD3530R can be evaluated with the EVAL-AD3530R.
Block Diagrams and Tables
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