AD9125BCPZRL datasheet(1/56 Pages) AD

部品番号	AD9125BCPZRL

部品情報	Dual, 16-Bit, 1000 MSPS, TxDAC Digital-to-Analog Converter

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Dual, 16-Bit, 1000 MSPS,

TxDAC+ Digital-to-Analog Converter

AD9125

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

FEATURES

Flexible CMOS interface allows dual-word, word, or byte load

Single-carrier W-CDMA ACLR = 80 dBc at 122.88 MHz IF

Analog output: adjustable 8.7 mA to 31.7 mA, RL = 25 Ω to 50 Ω

Novel 2×/4×/8× interpolator/complex modulator allows

carrier placement anywhere in the DAC bandwidth

Gain and phase adjustment for sideband suppression

Multichip synchronization interface

High performance, low noise PLL clock multiplier

Digital inverse sinc filter

Low power: 900 mW at 500 MSPS, full operating conditions

72-lead, exposed paddle LFCSP

APPLICATIONS

Wireless infrastructure

W-CDMA, CDMA2000, TD-SCDMA, WiMAX, GSM, LTE

Digital high or low IF synthesis

Transmit diversity

Wideband communications: LMDS/MMDS, point-to-point

Cable modem termination systems

GENERAL DESCRIPTION

The AD9125 is a dual, 16-bit, high dynamic range TxDAC+®

digital-to-analog converter (DAC) that provides a sample rate of

1000 MSPS, permitting a multicarrier generation up to the Nyquist

frequency. It includes features optimized for direct conversion

transmit applications, including complex digital modulation,

and gain and offset compensation. The DAC outputs are optimized

to interface seamlessly with analog quadrature modulators, such

as the ADL537x F-MOD series from Analog Devices, Inc. A 4-wire

serial port interface allows programming/readback of many inter-

nal parameters. Full-scale output current can be programmed

over a range of 8.7 mA to 31.7 mA. The AD9125 comes in a

72-lead LFCSP.

PRODUCT HIGHLIGHTS

1.

Ultralow 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

dynamic performance.

3.

The current outputs are easily configured for various

single-ended or differential circuit topologies.

4.

The flexible CMOS digital interface allows the standard

32-wire bus to be reduced to a 16-wire bus.

TYPICAL SIGNAL CHAIN

NOTES

1. AQM = ANALOG QUADRATURE MODULATOR.

COMPLEX BASEBAND

DC

COMPLEX IF

fIF

RF

LO – fIF

DIGITAL

BASEBAND

PROCESSOR

PA

I DAC

Q DAC

2

2/4

ANTIALIASING

FILTER

AQM

LO

SIN

COS

Figure 1.

同様の部品番号 - AD9125BCPZRL

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