The 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.
- 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
Built-in self test
LVDS sampling integrity
LVDS-to-DAC data transfer integrity
LVDS data interface with on-chip 100 ohms terminations
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 ohms to 50 ohms)
On-chip 1.2 V reference
160-lead chip scale ball grid array (CSP_BGA) package
Applications:
Broadband communications systems
Cellular infrastructure (digital predistortion)
Point-to-point wireless
CMTS/VOD
Instrumentation, automatic test equipment
Radar, avionics
