TRF3761
www.ti.com
SLWS181A–OCTOBER 2005–REVISED AUGUST 2006
INTEGER-N PLL WITH INTEGRATED VCO
FEATURES
RHA PACKAGE
(TOP VIEW)
•
Fully Integrated VCO
•
Low Phase Noise: –138dBc/Hz (at 600kHz,
fVCO of 1.9GHz )
•
•
•
Low Noise Floor: –160dBc/Hz at 10MHz Offset
Integer-N PLL
40 39 38 37 36 35 34 33 32 31
1
30
29
28
27
26
25
24
23
22
21
PD_OUTBUF
CHIP_EN
CLOCK
DATA
GND
Input Reference Frequency range: 10MHz to
104MHz
2
AVDD_BIAS
RBIAS1
3
•
•
•
•
•
•
•
VCO Frequency Divided by 2-4 Output
Output Buffer Enable Pin
4
GND
5
STROBE
GND
VCTRL_IN
AVDD_VCO
AVDD_BUF
AVDD_CAPARRAY
GND
Programmable Charge Pump Current
Hardware and Software Power Down
3-Wire Serial Interface
6
7
GND
8
DVDD1
AVDD_PRES
GND
9
Single Supply: 4.5V to 5.25V Operation
Silicon Germanium Technology
10
AVDD
11 12 13 14 15 16 17 18 19 20
APPLICATIONS
•
Wireless Infrastructure
– WCDMA
– CDMA
– GSM
AVAILABLE DEVICE OPTIONS
PART NUMBER
DIV1 MODE
DIV2 MODE
Fstart
DIV4 MODE
Fstart
Fstart
1500
1600
1726
1850
2080
2175
Fstop
1658
1700
1908
2045
2180
2404
Fstop
829.0
850
Fstop
414.50
425
TRF3761-1579
TRF3761-1700
TRF3761-1817
TRF3761-1947
TRF3761-2116
TRF3761-2289
750.0
800
375.00
400
863.0
925.0
1040
954.0
1022.5
1090
431.50
462.50
520
477.00
511.25
545
1087.5
1202.0
543.75
601.00
DESCRIPTION
TRF3761 is a family of high performance, highly integrated frequency synthesizers, optimized for wireless
infrastructure applications. The TRF3761 includes a low-noise, voltage-controlled oscillator (VCO) and an
integer-N PLL.
TRF3761 integrates divide-by 1, 2, or 4 options for a more flexible output frequency range. It is controlled
through a 3-wire serial-interface-programming (SPI) interface. It can be powered down when not used by the
SPI or external pin.
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.
PRODUCT PREVIEW information concerns products in the
Copyright © 2005–2006, Texas Instruments Incorporated
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.