GENERAL DESCRIPTION

The AD9154 is a quad, 16-bit, high dynamic range digital-to-analog converter (DAC) that provides a maximum sample rate of 2.4 GSPS, permitting multicarrier generation up to the Nyquist frequency in baseband mode. The AD9154 includes features optimized for direct conversion transmit applications, including complex digital modulation, input signal power detection, and gain, phase, and offset compensation. The DAC outputs are optimized to interface seamlessly with the ADRF6720-27 radio frequency quadrature modulator (AQM) from Analog Devices, Inc. In mix mode, the AD9154 DAC can reconstruct carriers in the second and third Nyquist zones. A serial port interface (SPI) provides the programming/readback of internal parameters.

The full-scale output current can be programmed over a range of 4 mA to 20 mA. The AD9154 is available in two different 88-lead LFCSP packages.

FEATURES

Supports input data rates up to 1.096 GSPS

Proprietary, low spurious and distortion design

Single carrier LTE 20 MHz bandwidth (BW), ACLR = 77 dBc at

180 MHz IF

Six carrier GSM IMD = 78 dBc, 600 kHz carrier spacing at

180 MHz IF

SFDR = 72 dBc at 180 MHz IF, −6 dBFS single tone

Flexible 8-lane JESD204B interface

Multiple chip synchronization

Fixed latency

Data generator latency compensation

Input signal power detection

High performance, low noise phase-locked loop (PLL) clock

multiplier

Digital inverse sinc filter

Digital quadrature modulation using a numerically

controlled oscillator (NCO)

Nyquist band selection—mix mode

Selectable 1×, 2×, 4×, and 8× interpolation filters

Low power: 2.11 W at 1.6 GSPS, full operating conditions

88-lead, exposed pad LFCSP

APPLICATIONS

Wireless communications

Multicarrier LTE and GSM base stations

Wideband repeaters

Software defined radios

Wideband communications

Point to point microwave radio

Transmit diversity, multiple input/multiple output (MIMO)

Instrumentation

Automated test equipment