Texas Instruments TRF3722 Manual

TRF3722 Quadrature Modulator with Integrated PLL and VCO
1 Features
• IQ Modulator with Integrated PLL and VCO
1
• Integer-N/Fractional-N PLL
• Modulator Supports 400 MHz to 4200 MHz
• PLL and VCO Supports 280 MHz to 4100 MHz
• OIP3 at 900 MHz = 31 dBm
• OIP3 at 1800 MHz = 30 dBm
• VCO 1800-MHz Open Loop Phase Noise =
–141 dBc/Hz at 1 MHz Offset
• Independent LO Output Supports divide-by 1/2/4/8
• Modulator Low Power and High Gain Modes
• Multiple Power Down Modes
2 Applications
• Wireless Infrastructure
– CDMA: IS95, UMTS, CDMA2000, TD-SCDMA
– LTE, TD-LTE, LTE Advanced
– TDMA: GSM, EDGE, MC-GSM
• Point-to-Point Microwave, Point-to-Multipoint
Microwave
• Software Defined Radios
• RF Repeaters, Distributed Antenna Systems
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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Block Diagram
LO Div
PLL Div
Charge
Pump
PFD
Pre
Scaler
R Div
N Div
SDM
Serial Interface
Support &
Tools &
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Software
SLWS245B – MAY 2014 – REVISED FEBRUARY 2017
3 Description
The TRF3722 is a
conversion quadrature modulator with exceptional
linearity and low noise performance. The typical
0.25-V baseband common mode voltage supports
seamless interface with current source DACs. The
device integrates the PLL and VCO to provide the
local oscillator (LO) to the modulator. The PLL and
VCO provides excellent phase noise performance to
satisfy the most stringent transmit communication
requirements. The device also provides additional LO
output for driving a second modulator or down
converting mixer. The modulator features a high gain
mode for a typical 3-dB gain increase and a low
power mode when power optimization is desired.
Device Information
PART NUMBER PACKAGE
TRF3722 VQFN (48)
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
6
TX Div
TRF3722
high performance direct
(1)
BODY SIZE (NOM)
7.00 mm x 7.00 mm