TRF3722 Datasheet, PDF (1/67 Pages) Texas Instruments – Quadrature Modulator with Integrated PLL and VCO

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TRF3722
SLWS245A – MAY 2014 – REVISED JUNE 2014
TRF3722 Quadrature Modulator with Integrated PLL and VCO
1 Features
•1 IQ Modulator with Integrated PLL and VCO
• Integer-N/Fractional-N PLL
• Modulator Supports 400 MHz to 4200 MHz
• PLL and VCO Supports 256 MHz to 4100 MHz
• OIP3 at 900 MHz = 31 dBm
• OIP3 at 1800 MHz = 30 dBm
• VCO 1800MHz 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
3 Description
TRF3722 is a high performance direct 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 ⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TRF3722
VQFN (48)
7.00mm x 7.00mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Block Diagram
NC
VTUNE EXT_VCO BBI_N BBI_P
LO_OUTN 38
LO_OUTP 39
LO Div
CP_OUT 41
Charge
PLL Div
Pump
PFD
Pre
0^O
Scaler
TX Div
$
REFIN 44
R Div
N Div
90^O
LE 46
DATA 47
CLK 48
Serial Interface
SDM
32 VCC_TK
35
33
42
23 ^VCC
21
16
14
4
18 _RFOUT
45
43
40
37 ^GND
30
26
PD RDBK LD
BBQ_N BBQ_P
GND
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.