Overview
The AD5317R, produced by Analog Devices Inc., is a low power, quad, 10-bit buffered voltage output Digital-to-Analog Converter (DAC) and a member of the nanoDAC® family. This device is characterized by its low drift 2.5 V internal reference with a temperature coefficient of 2 ppm/°C. It operates from a single 2.7 V to 5.5 V supply and is available in compact 3 mm × 3 mm LFCSP and TSSOP packages. The AD5317R features a versatile SPI interface with clock rates up to 50 MHz and supports 1.8 V, 3 V, or 5 V logic compatibility.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Number of Channels | 4 | ||||
| Resolution | 10 | bits | |||
| Operating Temperature Range | -40 | 105 | °C | ||
| Internal Reference Voltage | 2.5 | V | 2 ppm/°C typical | ||
| Gain Error | ±0.1% | % of FSR | |||
| Offset Error | ±1.5 | mV | |||
| Power Supply Voltage | 2.7 | 5.5 | V | ||
| Normal Mode Current Consumption | 0.59 | 0.7 | mA | At 3 V, internal reference on | |
| Power-Down Current Consumption | 1 | 4 | µA | At 3 V | |
| SPI Clock Rate | 50 | MHz |
Key Features
- Low drift 2.5 V internal reference with 2 ppm/°C temperature coefficient.
- Tiny package: 3 mm × 3 mm, 16-lead LFCSP and TSSOP options.
- Total unadjusted error (TUE): ±0.1% of FSR maximum.
- High drive capability: 20 mA, 0.5 V from supply rails.
- User selectable gain of 1 or 2 (GAIN pin).
- Reset to zero scale or midscale (RSTSEL pin).
- 1.8 V logic compatibility.
- 50 MHz SPI interface with readback or daisy chain capability.
- Low glitch: 0.5 nV-sec.
- Low power: 3.3 mW at 3 V.
- Per-channel power-down feature reducing current consumption to 4 µA at 3 V.
Applications
- Digital gain and offset adjustment.
- Programmable attenuators.
- Industrial automation.
- Data acquisition systems.
Q & A
- What is the resolution of the AD5317R DAC?
The AD5317R has a resolution of 10 bits.
- What is the operating temperature range of the AD5317R?
The operating temperature range is from -40°C to 105°C.
- What is the internal reference voltage of the AD5317R?
The internal reference voltage is 2.5 V with a temperature coefficient of 2 ppm/°C.
- What are the available package options for the AD5317R?
The AD5317R is available in 3 mm × 3 mm LFCSP and TSSOP packages.
- What is the maximum SPI clock rate for the AD5317R?
The maximum SPI clock rate is 50 MHz.
- Does the AD5317R support power-down mode?
Yes, the AD5317R has a per-channel power-down feature that reduces current consumption to 4 µA at 3 V.
- What is the gain error of the AD5317R?
The gain error is ±0.1% of FSR maximum.
- Can the AD5317R be reset to zero scale or midscale?
Yes, the AD5317R can be reset to zero scale or midscale using the RSTSEL pin.
- What is the logic compatibility of the AD5317R?
The AD5317R is compatible with 1.8 V, 3 V, or 5 V logic.
- What is the typical power consumption of the AD5317R in normal mode?
The typical power consumption in normal mode is 3.3 mW at 3 V.
