AD9154 Datasheet, PDF (1/124 Pages) Analog Devices – Quad, 16-Bit, 2.4 GSPS, TxDAC+ Digital-to-Analog Converter

Data Sheet
Quad, 16-Bit, 2.4 GSPS, TxDAC+®
Digital-to-Analog Converter
AD9154
FEATURES
Supports input data rates up to 1 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
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
Rev. B
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FUNCTIONAL BLOCK DIAGRAM
QUAD MOD
ADRF6720-27
DAC
RF
OUTPUT
0°/90° PHASE
SHIFTER
LPF
DAC
JESD204B
SYNCOUTx±
SYSREF
LO_IN
MOD_SPI
QUAD MOD
ADRF6720-27
QUAD DAC
DAC
RF
OUTPUT 1
0°/90° PHASE
LPF
SHIFTER
LO_IN
DAC
AD9154
MOD_SPI
DAC DAC
CLOCK SPI
Figure 1.
JESD204B
SYNCOUTx±
of 4 mA to 20 mA. The AD9154 is available in two different
88-lead LFCSP packages.
PRODUCT HIGHLIGHTS
1. Ultrawide signal bandwidth enables emerging wideband
and multiband wireless applications.
2. Advanced low spurious and distortion design techniques
provide high quality synthesis of wideband signals from
baseband to high intermediate frequencies.
3. JESD204B Subclass 1 support simplifies multichip
synchronization.
4. Small package size with a 12 mm × 12 mm footprint.
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