AD9736:  14-Bit, 1200 MSPS D/A Converter

The AD9736, AD9735, and AD9734 are high performance, high frequency DACs that provide sample rates of up to 1200 MSPS, permitting multicarrier generation up to their Nyquist frequency. The AD9736 is ...More

AD9736:  14-Bit, 1200 MSPS D/A Converter

Product Description

The AD9736, AD9735, and AD9734 are high performance, high frequency DACs that provide sample rates of up to 1200 MSPS, permitting multicarrier generation up to their Nyquist frequency. The AD9736 is the 14-bit member of the family, while the AD9735 and the AD9734 are the 12-bit and 10-bit members, respectively. They include a serial peripheral interface (SPI) port that provides for programming of many internal parameters and enables readback of status registers.

A reduced-specification LVDS interface is utilized to achieve the high sample rate. The output current can be programmed over a range of 8.66 mA to 31.66 mA. The AD973x family is manufactured on a 0.18 µm CMOS process and operates from 1.8 V and 3.3 V supplies for a total power consumption of 380 mW in bypass mode. It is supplied in a 160-lead chip scale ball grid array for reduced package parasitics.

Product Highlights

  1. Low noise and intermodulation distortion (IMD) features enable high quality synthesis of wideband signals at intermediate frequencies up to 600 MHz.
  2. Double data rate (DDR) LVDS data receivers support the maximum conversion rate of 1200 MSPS.
  3. Direct pin programmability of basic functions or SPI port access offers complete control of all AD973x family functions.
  4. Manufactured on a CMOS process, the AD973x family uses a proprietary switching technique that enhances dynamic performance.
  5. The current output(s) of the AD9736 family are easily configured for single-ended or differential circuit topologies.

Applications

  • Broadband communications systems
    Cellular infrastructure(digital predistortion)
    Point-to-point wireless
    CMTS/VOD
  • Instrumentation, automatic test equipment
  • Radar, avionics

Features

  • Pin-compatible family
  • Excellent dynamic performance
    AD9736: SFDR = 82 dBc at fOUT = 30 MHz
    AD9736: SFDR = 69 dBc at fOUT = 130 MHz
    AD9736: IMD = 87 dBc at fOUT = 30 MHz
    AD9736: IMD = 82 dBc at fOUT = 130 MHz
  • LVDS data interface with on-chip 100 Ω terminations
  • Built-in self test
    LVDS sampling integrity
    LVDS-to-DAC data transfer integrity
  • Low power: 380 mW (IFS = 20 mA;
    fOUT = 330 MHz)
  • 1.8/3.3 V dual-supply operation
  • Adjustable analog output
    8.66 mA to 31.66 mA (RL = 25 Ω to 50 Ω)
  • On-chip 1.2 V reference
  • 160-lead chip scale ball grid array (CSP_BGA) package

Diagrams

AD9736 Diagram
Functional Block Diagram for AD9736

Specifications

Resolution (Bits) 14bit
DAC Update Rate 1.2GSPS
DAC Settling Time n/a
# DAC Outputs 1
DAC Type Current Out
DAC Input Format LVDS,Par
Output FSR (Iout x Rload),Adj(10mA FS to 30mA FS)
Ref Int/Ext Int
Supply Vnom Multi(+1.8, +3.3)
Pwr Diss (Max) 550mW
Package BGA

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Part# Res (bits) Update Rate Settling Time # Outputs
AD9736 14 1.2GSPS - 1
AD9735 12 1.2GSPS - 1
AD9734 10 1.2GSPS - 1
AD9755 14 300MSPS 11ns 1
AD9744 14 210MSPS 11ns 1
AD9707 14 175MSPS 11ns 1
AD9772A 14 160MSPS 11ns 1