DAC38J82

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

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Product details

Parameters

Resolution (Bits) 16 DAC channels 2 Interface JESD204B Sample/update rate (MSPS) 2500 Features Ultra High Speed Rating Catalog Interpolation 16x, 1x, 2x, 4x, 8x Power consumption (Typ) (mW) 1144 SFDR (dB) 81 Architecture Current Source Operating temperature range (C) -40 to 85 Reference: type Int open-in-new Find other High-speed DACs (>10MSPS)

Package | Pins | Size

FCBGA (AAV) 144 100 mm² 10 x 10 open-in-new Find other High-speed DACs (>10MSPS)

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
open-in-new Find other High-speed DACs (>10MSPS)

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.

open-in-new Find other High-speed DACs (>10MSPS)
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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

 The DAC3XJ8XEVM is an evaluation module (EVM) designed to evaluate the DAC3XJ8X family of high-speed, JESD204B interface DACs (DAC37J82, DAC37J84, DAC38J82, DAC38J84). The EVM includes an onboard clocking solution (LMK04828), transformer coupled outputs, full power solution, and easy-to-use software (...)

Features
  • Allows comprehensive testing of the DAC3XJ8X family of high-speed, JESD204B interface DACs
  • Transformer-coupled signal path enables direct performance testing of the DAC3XJ8X outputs
  • Simplified testing using the onboard LMK04828 JESD204B clocking solution for clock generation, jitter cleaning, or (...)
GUIS FOR EVALUATION MODULES (EVM) Download
SLAC644B.ZIP (219583 KB)
GUIS FOR EVALUATION MODULES (EVM) Download
SLAC661.ZIP (182158 KB)
GUIS FOR EVALUATION MODULES (EVM) Download
SLAC790.ZIP (219583 KB)

Software development

SUPPORT SOFTWARE Download
High-speed data converter pro software
DATACONVERTERPRO-SW This high-speed data converter pro GUI is a PC (Windows® XP/7 compatible) program designed to aid in evaluation of most TI high-speed data converter and analog front-end (AFE) platforms. Designed to support the entire TSW14xxx series of data-capture and pattern-generation cards (...)
Features
  • Compatible with TSW1400, TSW1405, TSW1406 and TSW14J10, TSW14J50, TSW14J56, and TSW14J57 pattern-generation and data-capture platforms
  • Works with all TI high-speed DAC, ADC, and AFE products
  • Provides time-domain and frequency-domain analysis
  • Supports single-tone, multi-tone, and modulated (...)

Design tools & simulation

SIMULATION MODELS Download
SLAM197.ZIP (50 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
1-GHz Bandwidth Dual Channel Transmitter up to 4-GHz Reference Design
TIDA-00409 The TSW38J84 EVM reference design provides a platform to demonstrate a wideband dual transmit solution that incorporates an integrated LO.  The reference design utilizes the 2.5 GSPS DAC38J84 device with the high performance modulators: TRF3722 (including integrated PLL/VCO) and TRF3705. The (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Synchronized Multi-Transmitter Reference Design: Method of Time-Aligning Multiple DACs
TIDA-00996 To further increase the range, data rate, and reliability of modern mobile communications systems, system designers continue to place more emphasis on multiple-antenna transmitter systems to achieve combinations of spatial diversity and spatial multiplexing. Such implementations can further (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Bandwidth, High Frequency Transmitter Reference Design
TIDA-00335 This design illustrates the circuit modifications required to support high bandwidth and  high frequency applications using current source DACs like the  DAC38J84 with the TRF3704 modulator.  The TRF3704 is a 6 GHz modulator capable of supporting wide BB bandwidths.  The DAC38J84 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
FCBGA (AAV) 144 View options

Ordering & quality

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