DAC38J82 (ACTIVE)

Dual-Channel, 16-Bit, 2.5-GSPS, 1x-16x Interpolating Digital-to-Analog Converter (DAC)

 

Description

The pin-compatible DAC37J82/DAC38J82 family is a very low power, 16-bit, dual-channel, 1.6/2.5 GSPS digital to analog converter (DAC) with JESD204B interface. The maximum input data rate is 1.23 GSPS.

Digital data is input to the device through 1, 2, 4 or 8 configurable serial JESD204B lanes running up to 12.5 Gbps with on-chip termination and programmable equalization. The interface allows JESD204B Subclass 1 SYSREF based deterministic latency and full synchronization of multiple devices.

The device includes features that simplify the design of complex transmit architectures. Fully bypassable 2x to 16x digital interpolation filters with over 90 dB of stop-band attenuation simplify the data interface and reconstruction filters. An on-chip 48-bit Numerically Controlled Oscillator (NCO) and independent complex mixers allow flexible and accurate carrier placement.

A high-performance low jitter PLL simplifies clocking of the device without significant impact on the dynamic range. The digital Quadrature Modulator Correction (QMC) and Group Delay Correction (QDC) enable complete IQ compensation for gain, offset, phase, and group delay between channels in direct up-conversion applications. A programmable Power Amplifier (PA) protection mechanism is available to provide PA protection in cases when the abnormal power behavior of the input data is detected.

DAC37J82/DAC38J82 family provides four analog outputs, and the data from the internal two digital paths can be routed to any two out of these four DAC outputs via the output multiplexer.

Features

  • Resolution: 16-Bit
  • Maximum Sample Rate:
    • DAC37J82: 1.6 GSPS
    • DAC38J82: 2.5 GSPS
  • Maximum Input Data Rate: 1.23GSPS
  • JESD204B Interface
    • 8 JESD204B Serial Input Lanes
    • 12.5 Gbps Maximum Bit Rate per Lane
    • Subclass 1 Multi-DAC synchronization
  • On-Chip Very Low Jitter PLL
  • Selectable 1x -16x Interpolation
  • Independent Complex Mixers with
    48-bit NCO/ or ±n×Fs/8
  • Wideband Digital Quadrature Modulator
    Correction
  • Sinx/x Correction Filters
  • Fractional Sample Group Delay Correction
  • Flexible Routing to Four Analog Outputs
    via Output Multiplexer
  • 3/4-Wire Serial Control Bus (SPI)
  • Integrated Temperature Sensor
  • JTAG Boundary Scan
  • Pin-compatible with Quad-channel
    DAC37J84/DAC38J84
  • Power Dissipation: 1.1W at 2.5GSPS
  • Package: 10x10mm, 144-Ball Flip-Chip BGA

View more

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

 
Internal PLL
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
DAC38J82 DAC37J82 DAC37J84 DAC38J84 DAC39J82 DAC39J84
Yes    Yes    Yes    Yes    Yes    Yes   
16    16    16    16    16    16   
2500    1600    1600    2500    2800    2800   
2    2    4    4    2    4   
JESD204B    JESD204B    JESD204B    JESD204B    JESD204B    JESD204B   
79    81    81    79    68    68   
0.9, 1.8, 3.3    0.9, 1.8, 3.3    0.9, 1.8, 3.3    0.9, 1.8, 3.3    1.0, 1.8, 3.3    1.0, 1.8, 3.3   
1144    789    1277    1859    1135    1619   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
FCBGA    FCBGA    FCBGA    FCBGA    FCBGA    FCBGA   
See datasheet (FCBGA)    See datasheet (FCBGA)    See datasheet (FCBGA)    See datasheet (FCBGA)    See datasheet (FCBGA)    See datasheet (FCBGA)   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
1x
2x
4x
8x
16x   
1x
2x
4x
8x
16x   
1x
2x
4x
8x
16x   
1x
2x
4x
8x
16x   
1x
2x
4x
8x
16x   
1x
2x
4x
8x
16x   
Current Source    Current Source    Current Source    Current Source    Current Source    Current Source   
30    30    30    30    30    30   
10    10    10    10    10    10   
Differential    Differential    Differential    Differential    Differential    Differential   
Int    Int    Int    Int