
Analog Devices
GENERAL DESCRIPTION
The AD9786 is a 16-bit, high speed, CMOS DAC with 2×/4×/8× interpolation and signal processing features tuned for communications applications. It offers state-of-the-art distortion and noise performance. The AD9786 was developed to meet the demanding performance requirements of multicarrier and third-generation base stations. The selectable interpolation filters simplify interfacing to a variety of input data rates while also taking advantage of oversampling performance gains. The modulation modes allow convenient bandwidth placement and selectable sideband suppression.
FEATURES
16-bit resolution, 200 MSPS input data rate
IMD 90 dBc @10 MHz
Noise spectral density (NSD): −164 dBm/Hz @ 10 MHz
WCDMA ACLR = 80 dBc @ 40 MHz IF
DNL = ±0.3 LSB
INL = ±0.6 LSB
Selectable 2×/4×/8× interpolation filters
Selectable fDAC/2, fDAC/4, fDAC/8 modulation modes
Single- or dual-channel signal processing
Selectable image rejection Hilbert transform
Flexible calibration engine
Direct IF transmission features
Serial control interface
Versatile clock and data interface
3.3 V-compatible digital interface
On-chip 1.2 V reference
80-lead, thermally enhanced, TQFP_EP package
APPLICATIONS
Base stations: multicarrier WCDMA, GSM/EDGE, TD-SCDMA,
IS136, TETRA
Instrumentation
RF signal generators, arbitrary waveform generators
HDTV transmitters
Broadband wireless systems
Digital radio links
Satellite systems