(ADL5370 - ADL5374) Quadrature Modulator - Analog Devices
Description
Preliminary Technical Data
FEATURES
Output frequency range: 250 MHz to 4000 MHz Modulation bandwidth: 700 MHz (3 dB) 1 dB output compression: 12 dBm @ 2140 MHz Noise floor: -158 dBm/Hz Sideband Suppression: < -40 dBc LO Leakage: < - 40 dBm www.
DataSheet4U.
com Single supply: 4.
75 V to 5.
5 V 24-Lead LFCSP package
F-MOD - 250 MHz to 4000 MHz Quadrature Modulator Family ADL5370/1/2/3/4
FUNCTIONAL BLOCK DIAGRAM
IBBP
IBBN
APPLICATIONS
Cellular/PCS communication systems infrastructure WCDMA/CDMA2000/GSM/EDGE, WiMax Wi-Max/broadband wireless access systems
LOIP Quadrature Phase Splitter LOIN VOUT
QBBN
QBBP
Figure 1.
PRODUCT DESCRIPTION
The F-MOD family of monolithic, RF quadrature modulators is designed for use from 250 MHz to 4000 MHz.
Excellent phase accuracy and amplitude balance enable high performance direct RF modulation for communication systems.
The F-MOD family can be used as direct-to-RF modulators in digital communication systems such as GSM, CDMA, and WCDMA base stations, and QPSK or QAM broadband wireless access transmitters.
A 700 MHz 3 dB baseband bandwidth makes it ideal in broadband Zero-IF or Low-IF-to-RF applications and in broadband Digital Pre-Distortion transmitters.
The F-MOD family is fabricated using Analog Devices’ advanced Silicon-Germanium bipolar process, and are available in a 24-lead exposed-paddle LFCSP package.
Performance is specified over a –40°C to +85°C temperature range.
Pout [dBm]
Four Carrier PSD in 30kHz BW
-20
-30
-40
-50
-60
-66dBc
-70
-68dBc ALT
ACPR
-80
-90
-100
-110
-120 1975
1978
1982
1985
1988
1992
1995
1998
2002
2005
2008
2012
2015
2018
2022
Frequency [MHz]
Figure 2.
ADL5372 Four Carrier WCDMA Spectrum @ 2 GHz, -14.
5 dBm per Carrier
Rev.
PrG 4/26/2006
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