AD7398 Quad, Serial-Input 12-Bit DAC

The applied external reference, VREF, determines the full-scale output voltage. Valid VREF values include VSS < VREF < VDD that result in a wide selection of full-scale outputs. For multiplying applications, ac inputs can be as large as ±5 VP. A doubled-buffered serial-data interface offers high speed, 3-wire, SPI- and microcontroller-compatible inputs using serial data-in (SDI), clock (CLK), and a chip-select (CS). A common level-sensitive, load-DAC strobe (LDAC) input allows simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to zero at system turn on. An external asynchronous reset (RS) also forces all registers to the zero code state. A programmable power-shutdown feature reduces power dissipation on unused DACs. Both parts are offered in the same pinout, enabling users to select the appropriate resolution for their application without redesigning the layout. For 8-bit resolution applications, see the pin-compatible AD7304 product. The AD7398/AD7399 are specified over the extended industrial (−40°C to +125°C) temperature range. Parts are available in 16-lead, wide body SOIC and ultracompact, thin, 1.1 mm TSSOP packages. Applications Automotive output voltage span Portable communications Digitally controlled calibration PC peripherals

The AD7398/AD7399 family of quad, 12-bit/10-bit, voltage output digital-to-analog converters (DACs) is designed to operate from a single 3 V to 5 V supply or a dual ±5 V supply. Built with the Analog Devices, Inc. robust CBCMOS process, these monolithic DACs offer the user low cost with ease-of-use in single or dual-supply systems.

The applied external reference, VREF, determines the full-scale output voltage. Valid VREF values include VSS < VREF < VDD that result in a wide selection of full-scale outputs. For multiplying applications, ac inputs can be as large as ±5 VP.

A doubled-buffered serial-data interface offers high speed, 3-wire, SPI- and microcontroller-compatible inputs using serial data-in (SDI), clock (CLK), and a chip-select (CS). A common level-sensitive, load-DAC strobe (LDAC) input allows simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to zero at system turn on. An external asynchronous reset (RS) also forces all registers to the zero code state. A programmable power-shutdown feature reduces power dissipation on unused DACs.

Both parts are offered in the same pinout, enabling users to select the appropriate resolution for their application without redesigning the layout. For 8-bit resolution applications, see the pin-compatible AD7304 product.

The AD7398/AD7399 are specified over the extended industrial (−40°C to +125°C) temperature range. Parts are available in 16-lead, wide body SOIC and ultracompact, thin, 1.1 mm TSSOP packages.

Applications
  • Automotive output voltage span
  • Portable communications
  • Digitally controlled calibration
  • PC peripherals
Features and Benefits
  • AD7398 - 12-bit resolution
    AD7399 - 10-bit resolution
  • Programmable power shutdown
  • Single (3 V to 5 V) or dual (±5 V) supply operation
  • 3-wire, serial SPI®-compatible interface
  • Internal power-on reset
  • Double buffered registers for simultaneous multichannel DAC update
  • Four separate rail-to-rail reference inputs
  • Thin profile, TSSOP-16 package available
  • Low tempco: 1.5 ppm/°C
  • Qualified for automotive applications
Digital to Analog Converters
Data Sheets
Documentnote
AD7398/AD7399: Quad, Serial-Input 12-Bit/10-Bit DACs Data Sheet (Rev. C)PDF 545 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD7398BR Production16 ld SOIC - WideOTH 47-40 to 125C12.5711.36N
AD7398BR-REEL Production16 ld SOIC - WideREEL 1000-40 to 125C011.36N
AD7398BRU Production16 ld TSSOPOTH 96-40 to 125C12.5711.36N
AD7398BRU-REEL7 Production16 ld TSSOPREEL 1000-40 to 125C011.36N
AD7398BRUZ Production16 ld TSSOPOTH 96-40 to 125C10.889.84Y
AD7398BRUZ-REEL7 Production16 ld TSSOPREEL 1000-40 to 125C09.84Y
AD7398BRZ Production16 ld SOIC - WideOTH 47-40 to 125C10.889.84Y
AD7398BRZ-REEL Production16 ld SOIC - WideREEL 1000-40 to 125C09.84Y
AD7398WBRUZ-RL7 Production16 ld TSSOPREEL 1000-40 to 125C010.53Y
Reference Materials
AD7398/AD7399: Quad, Serial-Input 12-Bit/10-Bit DACs Data Sheet (Rev. C) ad7398
Digital to Analog Converters ICs Solutions Bulletin ad5590