|AD9148BBCZRL||Quad 16-Bit,1 GSPS, TxDAC+ Digital-to-Analog Converter|
|AD9148BBCZRL Datasheet PDF : 72 Pages |
Quad 16-Bit,1 GSPS,
TxDAC+ Digital-to-Analog Converter
Single-carrier W-CDMA ACLR = 80 dBc at 150 MHz IF
Channel-to-channel isolation > 90 dB
Adjustable 8.7 mA to 31.7 mA
RL = 25 Ω to 50 Ω
Novel 2×, 4×, and 8× interpolator eases data interface
On-chip fine complex NCO allows carrier placement
anywhere in DAC bandwidth
High performance, low noise PLL clock multiplier
Multiple chip synchronization interface
Programmable digital inverse sinc filter
Auxiliary DACs allow for offset control
Gain DACs allow for I and Q gain matching
Programmable I and Q phase compensation
Digital gain control
Flexible LVDS digital I/F supports 32- or 16-bit bus width
196-ball CSP_BGA, 12 mm × 12 mm
LTE, TD-SCDMA, WiMAX, W-CDMA, CDMA2000, GSM
Digital high or low IF synthesis
The AD9148 is a quad, 16-bit, high dynamic range, digital-to-
analog converter (DAC) that provides a sample rate of 1000 MSPS.
This device includes features optimized for direct conversion
transmit applications, including gain, phase, and offset compen-
sation. The DAC outputs are optimized to interface seamlessly with
analog quadrature modulators such as the ADL5371/ADL5372/
ADL5373/ADL5374/ADL5375. A serial peripheral interface (SPI)
is provided for programming of the internal device parameters.
Full-scale output current can be programmed over a range of 8.7 mA
to 31.7 mA. The device operates from 1.8 V and 3.3 V supplies
for a total power consumption of 3 W at the maximum sample
rate. The AD9148 is enclosed in a 196-ball chip scale package ball
grid array with the option of an attached heat spreader.
1. Low noise and intermodulation distortion (IMD) enable
high quality synthesis of wideband signals from baseband
to high intermediate frequencies.
2. A proprietary DAC output switching technique enhances
3. The current outputs are easily configured for various
single-ended or differential circuit topologies.
4. The LVDS data input interface includes FIFO to ease input
TYPICAL SIGNAL CHAIN
DIGITAL INTERPOLATION FILTERS
LO ± fIF
1. AQM = ANALOG QUADRATURE MODULATOR.
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