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AD5320BRTZ-REEL7

12-bit rail-to-rail voltage output DAC, 2.7-5.5V, 140µA, 30 MHz SPI, 6-lead SOT-23

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Manufacturer Part：

AD5320BRTZ-REEL7

Package：

6-Lead SOT-23 (2.9 x 1.6 x 1.1 mm)

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Description

Product Overview

The AD5320BRTZ-REEL7 is an Analog Devices single-channel, 12-bit buffered voltage output DAC operating from a +2.7 V to +5.5 V single supply. It consumes only 140 µA at 5 V (115 µA at 3 V) and features rail-to-rail output swing, a 30 MHz serial interface, and three power-down modes. The device is packaged in a 6-lead SOT-23 and is pin-compatible with the AD5300 (8-bit) and AD5310 (10-bit) versions.

Key Specifications

Resolution 12 bits
Output Type Voltage (rail-to-rail)
Supply Voltage 2.7 V to 5.5 V
Power Consumption 140 µA at 5 V, 115 µA at 3 V
Power-Down Current 200 nA at 5 V
Interface SPI/QSPI/MICROWIRE compatible
Clock Rate Up to 30 MHz
Package 6-Lead SOT-23

Features

  • Micropower: 140 µA at 5 V, 115 µA at 3 V
  • Power-down to 200 nA at 5 V
  • Guaranteed monotonic by design
  • Power-on-reset to zero volts
  • Three power-down functions
  • Rail-to-rail output with 1 V/µs slew rate
  • High speed 30 MHz serial interface
  • Pin-compatible with AD5300/AD5310

Applications

  • Portable battery-powered instruments
  • Digital gain and offset adjustment
  • Programmable voltage sources
  • Programmable attenuators
  • Industrial process control

The AD5320BRTZ-REEL7 is an Analog Devices single-channel 12-bit buffered voltage output DAC operating from a single +2.7 V to +5.5 V supply. It consumes only 115 µA at 3 V, making it ideal for battery-powered applications. The on-chip precision output amplifier enables rail-to-rail output swing. A versatile 3-wire serial interface operates at clock rates up to 30 MHz, compatible with SPI, QSPI, MICROWIRE, and DSP standards. The reference is derived from the power supply, giving the widest dynamic output range. Power-on-reset ensures the DAC output powers up to 0 V, and three power-down modes reduce current to 200 nA.

The AD5320 operates as a 12-bit digital-to-analog converter with four subsystems: (1) The serial interface receives 16-bit data words (2 control bits + 12 data bits + 2 don’t-care bits) via a 3-wire SPI-compatible interface at up to 30 MHz clock rate. (2) The resistor-string DAC core converts the 12-bit digital code to an analog voltage using a segmented R-2R architecture, guaranteed monotonic by design. (3) The output buffer amplifier provides rail-to-rail output swing with a slew rate of 1 V/µs and can drive loads directly. (4) The power-down logic, controlled by DB13 and DB12, selects between normal operation and three power-down modes (1 kΩ to GND, 100 kΩ to GND, or three-state), reducing supply current to 200 nA.

Pin Mnemonic Description
1 VOUT DAC analog output voltage
2 GND Ground reference
3 VDD Power supply input (2.7-5.5V)
4 DIN Serial data input
5 SCLK Serial clock input
6 SYNC Frame synchronization (active low)
  • Portable battery-powered instruments with 0.7 mW power consumption at 5V
  • Digital gain and offset adjustment in analog signal chains
  • Programmable voltage and current sources for test equipment
  • Industrial process control with 12-bit resolution and rail-to-rail output
  • Programmable attenuators in communication systems
Model Manufacturer Key Difference
AD5300BRTZ-REEL7 ADI 8-bit version, pin-compatible
AD5310BRTZ-REEL7 ADI 10-bit version, pin-compatible
AD5320BRMZ-REEL7 ADI 8-lead MSOP package alternative
DAC7512 TI Similar 12-bit DAC in SOT-23
MCP4921 Microchip 12-bit DAC with VREF pin
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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