General description
The DAC1627D1G25 is a high-speed 16-bit dual channel Digital-to-Analog Converter (DAC) with selectable ×2, ×4 and ×8 interpolating filters optimized for multi-carrier and broadband wireless transmitters at sample rates of up to 1.25 Gsps. Supplied from a 3.3 V and a 1.8 V source, the DAC1627D1G25 integrates a differential scalable output current up to 31.8 mA.

Features and benefits
■ Dual-channel 16-bit resolution
■ 1.25 Gsps maximum update rate
■ Selectable x2, x4 and x8 interpolation
   filters
■ Low noise capacitor-free integrated
   Phase-Locked Loop (PLL)
■ Embedded Numerically Controlled
   Oscillator (NCO) with 40-bit
   programmable frequency
■ Embedded complex (I/Q) modulator
■ Two power supplies
■ LVDS DDR compatible input interface
   with on-chip 100 Ω terminations
■ LVDS DDR input clock up to 400 MHz
■ LVDS or LVPECL compatible DAC clock
■ Interleaved or folded I and Q data input
   mode
■ Synchronization of multiple DAC
   devices
■ 3-wire or 4-wire mode SPI interface
■ Differential scalable output current from
   8.1 mA to 34 mA
■ External analog offset control
   (10-bit auxiliary DACs)
■ High resolution internal digital gain and
   offset control to support high
   performance IQ-modulator image
   rejection
■ Internal phase correction
■ Inverse (sin x) / x function
■ Power-down mode and Sleep mode;
   5-bit NCO low-power mode
■ On-chip 1.25 V reference
■ Industrial temperature range -40°C to +85°C
■ 72 pins small form factor HVQFN
   package

Applications
■ Wireless infrastructure: MC_GSM, LTE, WiMAX, GSM, CDMA, WCDMA, TD-SCDMA
■ Communications: LMDS/MMDS, point-to-point
■ Direct Digital Synthesis (DDS)
■ Digital radio links
■ Instrumentation
■ Automated Test Equipment (ATE)