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AD5025:  Fully Accurate 12-Bit VOUT nanoDAC® SPI Interface 2.7 V to 5.5 V in a TSSOP

Информация о продукте

Статус продукта:Производство

The AD5025/AD5045/AD5065 are low power, dual 12-/14-/16-bit buffered voltage output nanoDAC® DACs offering relative accuracy specifications of ±1 LSB INL with individual reference pins, and can operate from a single 4.5 V to 5.5 V supply. The AD5025/ AD5045/AD5065 also offer a differential accuracy specification of ±1 LSB. The parts use a versatile 3-wire, low power Schmitt trigger serial interface that operates at clock rates up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The reference for the AD5025/ AD5045/AD5065 are supplied from an external pin and a reference buffer is provided on chip. The AD5025/AD5045/AD5065 incorporate a power-on reset circuit that ensures the DAC output powers up zero scale or midscale and remains there until a validwrite takes place to the device. The AD5025/AD5045/AD5065 contain a power-down feature that reduces the current consumption of the device to typically 400 nA at 5 V and provides software selectable output loads while in power-down mode. The parts are put into power-down mode over the serial interface. Total unadjusted error for the parts is <2.5 mV. The parts exhibit very low glitch on power-up. The outputs of all DACs can be updated simultaneously using the LDAC function, with the added functionality of user-selectable DAC channels to simultaneously update. There is also an asynchronous CLR that clears all DACs to a software-selectable code—0 V, midscale, or full scale. The parts also feature a power-down lockout pin, PDL, which can be used to prevent the DAC from entering power-down under any circumstances over the serial interface.

Product Highlights

  1. Dual channel available in 14-lead TSSOP package with individual Voltage reference pins.
  2. 12-/14-/-16 bit accurate, 1 LSB INL.
  3. Low glitch on power-up.
  4. High speed serial interface with clock speeds up to 50 MHz.
  5. Three power-down modes available to the user.
  6. Reset to known output voltage (zero scale or midscale).
  7. Power Down lockout capability.
Applications

  • Process control
  • Data acquisition systems
  • Portable battery-powered instruments
  • Digital gain and offset adjustment
  • Programmable voltage and current sources
  • Programmable attenuators

ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

  • Low power Dual 12-/14-/16 bit DAC, ± 1LSB INL
  • Individual Voltage reference pins
  • Rail-to-rail operation
  • 4.5 V to 5.5 V power supply
  • Power-on reset to zero scale or midscale
  • Power down to 400 nA @ 5 V
  • 3 power-down functions
  • Per channel power-down
  • Low glitch upon power up
  • Hardware Power Down lock Out Capability
  • Hardware LDAC with software LDAC override function
  • CLR Function to programmable code

Functional Block Diagram for AD5025

Подобная продукция

  • AD5045: Fully Accurate 14-Bit VOUT nanoDAC® SPI Interface 2.7 V to 5.5 V in a TSSOP
  • AD5065: Fully Accurate 16-Bit VOUT nanoDAC® SPI Interface 2.7 V to 5.5 V in a TSSOP
  • AD5302: 2.5 V to 5.5 V, 230 µA, Dual Rail-to-Rail Voltage Output 8-Bit DAC in a 10-Lead MicroSOIC Package
More

Документация

Наименование Тип контента Тип файлов
AD5025/AD5045/AD5065: Fully Accurate, 12-/14-/16-Bit, Dual. VOUT nanoDAC SPI Interface, 4.5 V to 5.5 V in a TSSOP Data Sheet (Rev 0, 10/2008) (pdf, 1762 kB) Технические описания PDF
Digital to Analog Converters ICs Solutions Bulletin  (pdf) Техническая периодика PDF
Extending the nanoDAC Family Обзор HTML
RAQs index Rarely Asked Questions HTML
Словарь терминов Глоссарий HTML

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Сопутствующие компоненты

Suggested Companion Products


Recommended Precision References for the AD5025 Recommended Output Amplifiers for the AD5025
  • For applications requiring 5V bipolar outputs, we recommend the AD8638 or the dual AD8639.
  • For wider supplies, we recommend the AD820 or the OP295.
Recommended Digital Isolator for the AD5025
  • For process control applications in industrial environments, we recommend the ADuM1300 or the ADuM1310.

Recommended Power Solutions

  • For selecting voltage regulator products, use ADIsimPower.

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