Dual-Channel, 14-Bit, 275-MSPS Digital-to-Analog Converter (DAC) - DAC5672A

DAC5672A (ACTIVE)

Dual-Channel, 14-Bit, 275-MSPS Digital-to-Analog Converter (DAC)

 

Description

The DAC5672A is a monolithic, dual-channel, 14-bit, high-speed DAC with on-chip voltage reference.

Operating with update rates of up to 275 MSPS, the DAC5672A offers exceptional dynamic performance, tight-gain, and offset matching characteristics that make it suitable in either I/Q baseband or direct IF communication applications.

Each DAC has a high-impedance, differential-current output, suitable for single-ended or differential analog-output configurations. External resistors allow scaling the full-scale output current for each DAC separately or together, typically between 2 mA and 20 mA. An accurate on-chip voltage reference is temperature-compensated and delivers a stable 1.2-V reference voltage. Optionally, an external reference may be used.

The DAC5672A has two, 14-bit, parallel input ports with separate clocks and data latches. For flexibility, the DAC5672A also supports multiplexed data for each DAC on one port when operating in the interleaved mode.

The DAC5672A has been specifically designed for a differential transformer-coupled output with a 50- doubly-terminated load. For a 20-mA full-scale output current, both a 4:1 impedance ratio (resulting in an output power of 4 dBm) and 1:1 impedance ratio transformer (-2 dBm output power) are supported.

The DAC5672A is available in a 48-pin TQFP package. Pin compatibility between family members provides 12-bit (DAC5662) and 14-bit (DAC5672A) resolution. Furthermore, the DAC5672A is pin compatible to the DAC2904 and AD9767 dual DACs. The device is characterized for operation over the industrial temperature range of -40°C to 85°C.

Features

  • 14-Bit Dual TransmitDigital-to-Analog Converter (DAC)
  • 275 MSPS Update Rate
  • Single Supply: 3 V to 3.6 V
  • High Spurious-Free Dynamic Range (SFDR): 84 dBc at 5 MHz
  • High Third-Order Two-Tone Intermodulation (IMD3): 79 dBc at 15.1 MHz and 16.1 MHz
  • WCDMA Adjacent Channel Leakage Ratio (ACLR): 78 dB at Baseband
  • WCDMA ACLR: 73 dB at 30.72 MHz
  • Independent or Single Resistor Gain Control
  • Dual or Interleaved Data
  • On-Chip 1.2-V Reference
  • Low Power: 330 mW
  • Power-Down Mode: 9 mW
  • Package: 48-Pin Thin-Quad Flat Pack (TQFP)
  • APPLICATIONS
    • Cellular Base Transceiver Station Transmit Channel
      • CDMA: W-CDMA, CDMA2000, IS-95
      • TDMA: GSM, IS-136, EDGE/UWC-136
    • Medical/Test Instrumentation
    • Arbitrary Waveform Generators (ARB)
    • Direct Digital Synthesis (DDS)
    • Cable Modem Termination System (CMTS)

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Parametrics Compare all products in High Speed DACs (>10MSPS)

 
Resolution (Bits)
Sample / Update Rate (MSPS)
DAC Channels
Interface
SFDR (dB)
Supply Voltage(s) (V)
Power Consumption (Typ) (mW)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Rating
Interpolation
Architecture
Output Range Max. (mA)
Output Range Min. (mA)
Output Type
Reference: Type
DAC5672A DAC5652 DAC5652A DAC5662 DAC5662A DAC5672
14    10    10    12    12    14   
275    275    275    275    275    275   
2    2    2    2    2    2   
Parallel CMOS    Parallel CMOS    Parallel CMOS    Parallel CMOS    Parallel CMOS    Parallel CMOS   
84    80    80    81    85    84   
3.3    3.3    3.3    3.3    3.3    3.3   
330    290    290    330    330    330   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
TQFP    TQFP    TQFP    TQFP    TQFP    TQFP   
48TQFP: 81 mm2: 9 x 9(TQFP)    48TQFP: 81 mm2: 9 x 9(TQFP)    48TQFP: 81 mm2: 9 x 9(TQFP)    48TQFP: 81 mm2: 9 x 9(TQFP)    48TQFP: 81 mm2: 9 x 9(TQFP)    48TQFP: 81 mm2: 9 x 9(TQFP)   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
1x    1x    1x    1x    1x    1x   
Current Source    Current Source    Current Source    Current Source    Current Source    Current Source   
20    20    20    20    5.5    20   
2    2    2    2    0    2   
Differential    Differential    Differential    Differential    Differential    Differential   
Int    Int
Ext   
Int
Ext   
Ext    Ext    Int