AD9706 12-Bit, 175 MSPS TxDAC® Digital-to-Analog Converter

The AD9704/AD9705/AD9706/AD9707 are the fourth-generation family in the TxDAC series of high performance, CMOS digital-to-analog converters (DACs). This pin-compatible, 8-/10-/12-/14-bit resolution family is optimized for low power operation, while maintaining excellent dynamic performance. The AD9704/ AD9705/AD9706/AD9707 family is pin-compatible with the AD9748/AD9740/AD9742/AD9744 family of TxDAC convert-ers and is specifically optimized for the transmit signal path of communication systems. All of the devices share the same interface, LFCSP_VQ package, and pinout, providing an upward or downward component selection path based on performance, resolution, and cost. The AD9704/AD9705/ AD9706/AD9707 offers exceptional ac and dc performance, while supporting update rates up to 175 MSPS. Pin Compatible. The AD9704/AD9705/AD9706/AD9707 line of TxDAC converters is pin-compatible with the AD9748/AD9740/AD9742/AD9744 TxDAC line (LFCSP_VQ package). Low Power. Complete CMOS DAC operates on a single supply of 3.6 V down to 1.7 V, consuming 50 mW (3.3 V) and 12 mW (1.8 V). The DAC full-scale current can be reduced for lower power operation. Sleep and power-down modes are provided for low power idle periods. Self-Calibration. Self-calibration enables true 14-bit INL and DNL performance in the AD9707. Twos Complement/Binary Data Coding Support. Data input supports twos complement or straight binary data coding. Flexible Clock Input. A selectable high speed, single-ended, and differential CMOS clock input supports 175 MSPS conversion rate. Device Configuration. Device can be configured through pin strapping, and SPI control offers a higher level of programmability. Easy Interfacing to Other Components. Adjustable common-mode output allows for easy interfacing to other signal chain components that accept common-mode levels from 0 V to 1.2 V. On-Chip Voltage Reference. The AD9704/AD9705/AD9706/ AD9707 include a 1.0 V temperature-compensated band gap voltage reference. Industry-Standard 32-Lead LFCSP_VQ Package.

The flexible power supply operating range of 1.7 V to 3.6 V and low power dissipation of the AD9704/AD9705/AD9706/AD9707 parts make them well-suited for portable and low power applications.

Power dissipation of the AD9704/AD9705/AD9706/AD9707 can be reduced to 15 mW, with a small trade-off in performance, by lowering the full-scale current output. In addition, a power-down mode reduces the standby power dissipation to approxi-mately 2.2 mW.

The AD9704/AD9705/AD9706/AD9707 has an optional serial peripheral interface (SPI®) that provides a higher level of program-mability to enhance performance of the DAC. An adjustable output, common-mode feature allows for easy interfacing to other components that require common modes from 0 V to 1.2 V.

Edge-triggered input latches and a 1.0 V temperature-compensated band gap reference have been integrated to provide a complete, monolithic DAC solution. The digital inputs support 1.8 V and 3.3 V CMOS logic families.

Product Highlights
  • Pin Compatible. The AD9704/AD9705/AD9706/AD9707 line of TxDAC converters is pin-compatible with the AD9748/AD9740/AD9742/AD9744 TxDAC line (LFCSP_VQ package).
  • Low Power. Complete CMOS DAC operates on a single supply of 3.6 V down to 1.7 V, consuming 50 mW (3.3 V) and 12 mW (1.8 V). The DAC full-scale current can be reduced for lower power operation. Sleep and power-down modes are provided for low power idle periods.
  • Self-Calibration. Self-calibration enables true 14-bit INL and DNL performance in the AD9707.
  • Twos Complement/Binary Data Coding Support. Data input supports twos complement or straight binary data coding.
  • Flexible Clock Input. A selectable high speed, single-ended, and differential CMOS clock input supports 175 MSPS conversion rate.
  • Device Configuration. Device can be configured through pin strapping, and SPI control offers a higher level of programmability.
  • Easy Interfacing to Other Components. Adjustable common-mode output allows for easy interfacing to other signal chain components that accept common-mode levels from 0 V to 1.2 V.
  • On-Chip Voltage Reference. The AD9704/AD9705/AD9706/ AD9707 include a 1.0 V temperature-compensated band gap voltage reference.
  • Industry-Standard 32-Lead LFCSP_VQ Package.

Data Sheet, Rev. A, 4/07

Features and Benefits
  • 175 MSPS update rate
  • Low power member of pin-compatible TxDAC product family
  • Low power dissipation
    12 mW @ 80 MSPS, 1.8 V
    50 mW @ 175 MSPS, 3.3 V
  • Wide supply voltage: 1.7 V to 3.6 V
  • SFDR to Nyquist
    AD9707: 84 dBc @ 5 MHz output
    AD9707: 83 dBc @ 10 MHz output
    AD9707: 75 dBc @ 20 MHz output
  • AD9707 NSD @ 10 MHz output, 125 MSPS: −147 dBc/Hz
  • Adjustable full-scale current outputs: 1 mA to 5 mA
  • On-chip 1.0 V reference
  • CMOS-compatible digital interface
  • Common-mode output: adjustable 0 V to 1.2 V
  • Power-down mode < 2 mW @ 3.3 V (SPI controllable) Self-calibration
  • Compact 32-lead LFCSP_VQ, RoHS compliant package
  • Digital to Analog Converters
    IBIS Models
    Data Sheets
    Documentnote
    AD9704/AD9705/AD9706/AD9707: 8-/10-/12-/14-Bit, 175 MSPS TxDAC Digital-to-Analog Converters Data Sheet (Rev. B)PDF 2123 kB
    Application Notes
    Documentnote
    AN-912: Driving a Center-Tapped Transformer with a Balanced Current-Output DAC (Rev. 0)PDF 246 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD9706BCPZ Production32 ld LFCSP (5x5mm)OTH 490-40 to 85C7.086.02Y
    AD9706BCPZRL7 Production32 ld LFCSP (5x5mm)REEL 1500-40 to 85C06.02Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    AD9706-DPG2-EBZEvaluation Board495Y
    AD-DAC-FMC-ADPFMC to High-Speed DAC Evalution Board Adaptor 125Y
    Reference Materials
    AD9704/AD9705/AD9706/AD9707: 8-/10-/12-/14-Bit, 175 MSPS TxDAC Digital-to-Analog Converters Data Sheet (Rev. B) ad9704
    AD9706 IBIS Model ad9706
    AN-912: 用平衡电流输出DAC驱动中心抽头变压器[中文版] (Rev. 0) ad7524
    AN-912: Driving a Center-Tapped Transformer with a Balanced Current-Output DAC (Rev. 0) ad7524
    Digital to Analog Converters ICs Solutions Bulletin ad5590