TRF3705_15_15 Datasheet, PDF (1/38 Pages) Texas Instruments – 300-MHz to 4-GHz Quadrature Modulator

TRF3705
www.ti.com
SLWS223A – AUGUST 2011 – REVISED OCTOBER 2011
300-MHz to 4-GHz Quadrature Modulator
Check for Samples: TRF3705
FEATURES
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•23 High Linearity:
– Output IP3: 30 dBm at 1850 MHz
• Low Output Noise Floor: –160 dBm/Hz
• 78-dBc Single-Carrier WCDMA ACPR
at –10-dBm Channel Power
• Unadjusted Carrier Suppression: –40 dBm
• Unadjusted Sideband Suppression: –45 dBc
• Single Supply: 3.3-V Operation
• 1-bit Gain Step Control
• Fast Power-Up/Power-Down
APPLICATIONS
• Cellular Base Station Transmitter
• CDMA: IS95, UMTS, CDMA2000, TD-SCDMA
• LTE (Long Term Evolution)
• TDMA: GSM, EDGE/UWC-136
• Multicarrier GSM (MC-GSM)
• Wireless MAN Wideband Transceivers
DESCRIPTION
The TRF3705 is a low-noise direct quadrature
modulator, capable of converting complex modulated
signals from baseband or IF directly up to RF. The
TRF3705 is a high-performance, superior-linearity
device that is ideal to up-convert to RF frequencies of
300 MHz⁽¹⁾ through 4 GHz. The modulator is
implemented as a double-balanced mixer.
The RF output block consists of a
differential-to-single-ended converter that is capable
of driving a single-ended 50-Ω load. The TRF3705
requires a 0.25-V common-mode voltage for optimum
linearity performance. The TRF3705 also provides a
fast power-down pin that can be used to reduce
power dissipation in TDD applications.
The TRF3705 is available in an RGE-24 VQFN
package.
(1) Appropriate matching network is required for optimal
performance at 300 MHz.
PD 1
GND 2
LOP 3
0/90
LOM 4
GND 5
GC 6
18 VCC
17 GND
16
RF_OUT
S
15 GND
14 GND
13 GND
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated