TI DAC5672AIPFBG4

The DAC5672A device is a monolithic, dual-channel, 14-bit, high-speed DAC with an on-chip voltage reference. The DAC5672A can operate at update rates of up to 275 MSPS, featuring excellent dynamic performance, tight gain and offset matching characteristics, making it well-suited for I/Q baseband or direct IF communication applications. Each DAC has high-impedance differential current outputs, suitable for single-ended or differential analog output configurations. External resistors allow for individual or overall adjustment of the full-scale output current of each DAC, typically ranging between 2 mA and 20 mA. The precise on-chip voltage reference has temperature compensation characteristics and provides a stable 1.2 V reference voltage. An external reference can also be optionally used. The DAC5672A has two 14-bit parallel input ports, each with a separate clock and data latch. In terms of flexibility, when operating in interleaved mode, the DAC5672A supports multiplexed data for the DACs on each port. The DAC5672A is designed for differential transformer-coupled outputs with a 50 Ω double-terminated load. For a 20 mA full-scale output current, it supports a 4:1 impedance ratio (producing 4 dBm output power) and a 1:1 impedance ratio transformer (-2 dBm output power). The DAC5672A comes in a 48-pin TQFP package. The product family members are pin-compatible, offering 12-bit (DAC5662) and 14-bit (DAC5672A) resolutions. Additionally, the DAC5672A is also pin-compatible with the DAC2904 and AD9767 dual DACs. The device can operate in the industrial temperature range from -40°C to 85°C.

• 14-bit dual transmit DAC
• 275MSPS update rate
• Single supply: 3V to 3.6V
• High SFDR: 84dBc at 5MHz
• High IMD3: 79dBc at 15.1MHz and 16.1MHz
• WCDMA ACLR: 78dB at baseband
• WCDMA ACLR: 73dB at 30.72MHz
• Independent or single resistor gain control
• Dual or interleaved data
• 1.2V on-chip voltage reference
• Low power: 330mW
• Power-down mode: 9mW
• Package: 48-pin TQFP

• BTS transmit channels
  • CDMA: W-CDMA, CDMA2000, IS-95
  • TDMA: GSM, IS-136, EDGE, and UWC-136
• Medical and test equipment
• Arbitrary waveform generators (ARB)
• Direct digital synthesis (DDS)
• Cable modem termination systems (CMTS)