DAC2932

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Dual-Channel, 12-Bit, 40-MSPS, Ultra-Low Power Digital-to-Analog Converter (DAC)

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Product details

Parameters

Resolution (Bits) 12 Number of DAC channels (#) 2 Interface type Parallel CMOS Sample/update rate (MSPS) 40 Features Low Power Rating Catalog Interpolation 1x Power consumption (Typ) (mW) 29 SFDR (dB) 75 Architecture Current Source Operating temperature range (C) -40 to 85 Reference type Ext, Int open-in-new Find other High-speed DACs (>10MSPS)

Package | Pins | Size

TQFP (PFB) 48 81 mm² 9 x 9 open-in-new Find other High-speed DACs (>10MSPS)

Features

  • Dual, 12-Bit, 40MSPS Current Output DACs
  • Four 12-Bit Voltage Output DACs—for Transmit Control
  • Single +3V Operation
  • Very Low Power: 29mW
  • High SFDR: 75dB at fOUT = 5MHz
  • Low-Current Standby or Full Power-Down Modes
  • Internal Reference
  • Optional External Reference
  • Adjustable Full-Scale Range: 0.5mA to 2mA
  • APPLICATIONS
    • Transmit Channels
      • I and Q
      • PC Card Modems: GPRS, CDMA
      • Wireless Network Cards (NICs)
    • Signal Synthesis (DDS)
    • Portable Medical Instumentation
    • Arbitrary Waveform Generation (AWG)

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

Description

The DAC2932 is a dual 12-bit, current-output digital-to-analog converter (DAC) designed to combine the features of high dynamic range and very low power consumption. The DAC2932 converter supports update rates of up to 40MSPS. In addition, the DAC2932 features four 12-bit voltage output DACs, which can be used to perform system control functions.

The advanced segmentation architecture of the DAC2932 is optimized to provide a high spurious-free dynamic range (SFDR).

The DAC2932 has a high impedance (> 200k) differential current output with a nominal range of 2mA and a compliance voltage of up to 0.8V. The differential outputs allow for either a differential or single-ended analog signal interface. The close matching of the current outputs ensures superior dynamic performance in the differential configuration, which can be implemented with a transformer. Using a small geometry CMOS process, the monolithic DAC2932 is designed to operate within a single-supply range of 2.7V to 3.3V. Low power consumption makes it ideal for portable and battery-operated systems. Further optimization by lowering the output current can be realized with the adjustable full-scale option. The full-scale output current can be adjusted over a span of 0.5mA to 2mA.

For noncontinuous operation of the DAC2932, a full power-down mode can reduce the power dissipation to as little as 25µW.

The DAC2932 is designed to operate with a single parallel data port. While it alternates the loading of the input data into separate input latches for both current output DACs (I-DACs), the updating of the analog output signal occurs simultaneously. The DAC2932 integrates a temperature compensated 1.22V bandgap reference. The DAC2932 also allows for additional flexibility of using an external reference.

The DAC2932 is available in a TQFP-48 package.

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

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Type Title Date
* Data sheet Dual, 12-Bit, 40MSPS, Digital-to-Analog Converter datasheet (Rev. D) Jul. 11, 2005
Technical article Keys to quick success using high-speed data converters Oct. 13, 2020
Technical article Digital signal processing in RF sampling DACs – part 2 Apr. 04, 2017
Technical article Digital signal processing in RF sampling DACs - part 1 Feb. 13, 2017
Technical article Why phase noise matters in RF sampling converters Nov. 28, 2016
Application note Design for a Wideband Differential Transimpedance DAC Output (Rev. A) Oct. 17, 2016
Application note Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) May 08, 2015
Application note Design for a Wideband Differential Transimpedance DAC Output Apr. 18, 2008
User guide DAC2932 12-Bit Dual Channel DAC EVM Jul. 13, 2005

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
199
Description

This EVM helps users evaluate TI's DAC2932, a dual 12-bit, current-output digital-to-analog converter (DAC) designed to combine the features of high dynamic range and very low power consumption.

The DAC2932 converter supports update rates of up to 40MSPS. In addition, the DAC2932 features four 12-bit (...)

Features
  • Dual, 12-Bit, 40MSPS Current Output DACs
  • Four 12-Bit Voltage Output DACs—for Transmit Control
  • Single +3V Operation
  • Very Low Power: 29mW
  • High SFDR: 75dB at fOUT = 5MHz
  • Low-Current Standby or Full Power-Down Modes
  • Internal Reference
  • Optional External Reference
  • Adjustable Full-Scale Range: 0.5mA to 2mA
  • (...)

Design tools & simulation

SIMULATION MODEL Download
SLAC061.ZIP (8 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download

CAD/CAE symbols

Package Pins Download
TQFP (PFB) 48 View options

Ordering & quality

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  • Ongoing reliability monitoring

Support & training

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