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DAC1627D1G25HN - Block Diagram

DAC1627D1G25HN

Dual 16-bit DAC, up to 1.25 Gsps; 2x 4x and 8x interpolating

The DAC1627D1G25 is a 16-bit dual-channel digital-to-analog converter (DAC) with selectable 2x, 4x and 8x interpolation filters optimized for multi-carrier broad band wireless transmitters at sample rates up to 1.25 Gsps. Supplied from 3.3 V and 1.8 V power sources, it integrates a differential scalable output current up to 34 mA. The mixer frequency is set by a high resolution 40-bit Numerically Controlled Oscillator (NCO). High resolution internal gain, phase and offset control provide outstanding image and LO rejection at the system analog modulator output. An inverse (sin x)/x function ensures controlled flatness at the DAC output. The LVDS DDR receiver interface allows a high data bandwidth (312.5 MS/sec) at the input.

Features

  • 1.25 Gsps maximum update rate
  • 1.8 V and 3.3 V power supplies
  • 3 or 4 wire mode SPI interface
  • Differential scalable output current from 8.1 mA to 34 mA
  • Dual channel 16-bit resolution
  • Embedded complex digital modulator
  • Embedded Numerically Controlled Oscillator with 40-bit programmable frequency
  • External analog offset control (10-bit auxiliary DACs)
  • High resolution internal digital gain and offset control
  • Interleaved or folded I and Q data input modes
  • Internal phase correction
  • Inverse (sin x) / x function
  • LVDS DDR compatible input interface with on-chip 100 ohm termination
  • LVDS DDR input clock up to 312.5 MHz
  • LVDS or LVPECL compatible DAC clock
  • MDS CGVxpress&trade
  •  feature
  • On-chip 1.25 V reference
  • Power-down mode and sleep mode
  • Selectable 2x, 4x and 8x interpolation filters
  • Very low noise capacitor-free integrated Phase Locked Loop (PLL)

Product Specification

Resolution (bits)Channels (#)Sample Freq. Max (Msps)SFDR (dBc)Power Consumption Typ (mW)Supply Voltage (V)Interface CompatibilityInterpolation
16212508515001.80, 3.30LVDS DDR2x, 4x, 8x

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
DAC1627D1G25HN-C1ObsoleteNLG72VFQFPN72IYesTrayCheck Availability
DAC1627D1G25HN-C18ObsoleteNLG72VFQFPN72IYesReelCheck Availability

Documents

Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
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DAC1627D1G25 Datasheet Datasheet PDF 1014 KB Dec 21, 2012