Overview

Features and Benefits

  • Micropower: 140 µA @ 5 V, 115 µA @ 3 V
  • Power-Down to 200 nA @ 5 V, 50 nA @ 3 V
  • Guaranteed Monotonic by design
  • Power-On-Reset to Zero Volts
  • Three Power-Down Functions
  • SYNC (active low) Interrupt Facility
  • Low Power, SPI, QSPI, MICROWIRE and DSP-Compatible 3-Wire Serial Interface
  • Output Buffer Amplifier with Rail-to-Rail Operation
  • Temperature Range: -40°C to 105°C
  • Three Power-Down Functions

Product Details

The AD5320 is a single, 12-bit buffered voltage out DAC that operates from a single +2.7 V to +5.5 V supply consuming 115 µA at 3 V. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5320 utilizes a versatile three-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI,QSPI, MICROWIRE and DSP interface standards.

The reference for AD5320 is derived from the power supply inputs and thus gives the widest dynamic output range. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to zero volts and remains there until a valid write takes place to the device. The part contains a power-down feature that reduces the current consumption of the device to 200 nA at 5 V and provides software selectable output loads while in power-down mode. The part is put into power-down mode over the serial interface.

The low power consumption of this part in normal operation makes it ideally suited to portable, battery-operated equipment. The power consumption is 0.7 mW at 5 V reducing to 1 μW in power-down mode.

The AD5320 is one of a family of pin-compatible DACs. The AD5300 is the 8-bit version and the AD5310 is the 10-bit version. The AD5300/AD5310/AD5320 are available in 6-lead SOT-23 packages and 8-lead MSOP packages.

PRODUCT HIGHLIGHTS

  1. Available in 6-lead SOT-23 and 8-lead MicroSOIC packages
  2. Low power, single supply operation from 2.7 V to 5.5 V
  3. Consumes 0.35 mW at 3 V and 0.7 mW at 5 V
  4. Rail-to-Rail output with a slew rate of 1 V/µs
  5. Reference derived from the power supply
  6. High speed serial interface with clock speeds up to 30 MHz
  7. Pin and Software Compatible with the AD5300 (8-Bit) and the AD5310 (10-bit)

APPLICATIONS

  • Portable battery-powered instruments
  • Digital gain and offset adjustment
  • Programmable voltage and current sources
  • Programmable attenuators

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Design Resources

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PCN-PDN Information

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.