AD9764:  14-Bit, 100 MSPS+ TxDAC® D/A Converter

The AD9764 is the 14-bit resolution member of the TxDAC® series of high performance, low power CMOS digital-to-analog converters (DACs). The TxDAC®; family, which consists of pin compatible 8-, 10-, ...More

AD9764:  14-Bit, 100 MSPS+ TxDAC® D/A Converter

Product Description

The AD9764 is the 14-bit resolution member of the TxDAC® series of high performance, low power CMOS digital-to-analog converters (DACs). The TxDAC®; family, which consists of pin compatible 8-, 10-, 12-, and 14-bit DACs, is specifically optimized for the transmit signal path of communication systems. All of the devices share the same interface options, small outline package and pinout, providing an upward or downward component selection path based on performance, resolution and cost. The AD9764 offers exceptional ac and dc performance while supporting update rates up to 125 MSPS.

The AD9764’s flexible single-supply operating range of 2.7 V to 5.5 V and low power dissipation are well suited for portable and low power applications. Its power dissipation can be further reduced to a mere 45 mW with a slight degradation in performance by lowering the full-scale current output. Also, a power-down mode reduces the standby power dissipation to approximately 25 mW.

The AD9764 is manufactured on an advanced CMOS process. A segmented current source architecture is combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance. Edge-triggered input latches and a 1.2 V temperature compensated bandgap reference have been integrated to provide a complete monolithic DAC solution. Flexible supply options support +3 V and +5 V CMOS logic families.

The AD9764 is a current-output DAC with a nominal full-scale output current of 20 mA and > 100 k ohm output impedance. Differential current outputs are provided to support single-ended or differential applications. Matching between the two current outputs ensures enhanced dynamic performance in a differential output configuration. The current outputs may be tied directly to an output resistor to provide two complementary, single-ended voltage outputs or fed directly into a transformer. The output voltage compliance range is 1.25 V.

The on-chip reference and control amplifier are configured for maximum accuracy and flexibility. The AD9764 can be driven by the on-chip reference or by a variety of external reference voltages. The internal control amplifier, which provides a wide (>10:1) adjustment span, allows the AD9764 full-scale current to be adjusted over a 2 mA to 20 mA range while maintaining excellent dynamic performance. Thus, the AD9764 may operate at reduced power levels or be adjusted over a 20 dB range to provide additional gain ranging capabilities.

The AD9764 is available in a 28-lead SOIC package. It is specified for operation over the industrial temperature range.

Features

  • Member of Pin-Compatible TxDAC Product Family
  • 125 MSPS Update Rate
  • 14-Bit Resolution
  • Excellent SFDR and IMD
  • Differential Current Outputs: 2 mA to 20 mA
  • Power Dissipation:
    190 mW @ 5 V to 45 mW @ 3 V
  • Power-Down Mode: 25 mW @ 5 V
  • On-Chip 1.20 V Reference
  • Single +5 V or +3 V Supply Operation
  • Packages: 28-Lead SOIC and TSSOP
  • Edge-Triggered Latches

Diagrams

AD9764 Diagram
Functional Block Diagram for AD9764

Specifications

Resolution (Bits) 14bit
DAC Update Rate 125MSPS
DAC Settling Time 35ns
# DAC Outputs 1
DAC Type Current Out
DAC Input Format Par
Output FSR (Iout x Rload),Adj(Uni 2mA to Uni 20mA),User Def. Range/Offset
Ref Int/Ext Int/Ext
Supply Vnom Single(+5)
Pwr Diss 170mW
Package SOIC,SOP

AD5765 - Complete Quad, 16-Bit, High Accuracy, Serial Input, ±5 V DAC

AD5763 - Complete Dual, 16-Bit High Accuracy, Serial Input, ±5 V DAC

AD5724R - Complete, Quad, 12-Bit, Serial Input, Unipolar/Bipolar Voltage Output DAC

AD5412 - Single Channel, 12-Bit, Serial Input, Current Source & Voltage Output DAC

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Part# Bits Update Rate Settling Time # Outputs
AD9707 14 175MSPS 11ns 1
AD9754 14 125MSPS 35ns 1
AD9755 14 300MSPS 11ns 1
AD9772A 14 160MSPS 11ns 1
AD9764 14 125MSPS 35ns 1
AD9744 14 210MSPS 11ns 1
AD9767 14 125MSPS 35ns 2
AD9775 14 400MSPS 11ns 2
AD9742 12 210MSPS 11ns 1
AD9706 12 175MSPS 11ns 1
AD9752 12 125MSPS 35ns 1
Pricing, Packaging & Availability

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Package Description
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For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Production Availability
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Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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