TRF3761_07 Datasheet, PDF (1/56 Pages) Texas Instruments – INTEGER-N PLL WITH INTEGRATED VCO

TRF3761
www.ti.com
SLWS181F – OCTOBER 2005 – REVISED JANUARY 2007
INTEGER-N PLL WITH INTEGRATED VCO
FEATURES
• Fully Integrated VCO
• Low Phase Noise: –137dBc/Hz (at 600kHz, f_VCO
of 1.9GHz )
• Low Noise Floor: –158dBc/Hz at 10MHz Offset
• Integer-N PLL
• Input Reference Frequency range: 10MHz to
104MHz
• VCO Frequency Divided by 2-4 Output
• Output Buffer Enable Pin
• Programmable Charge Pump Current
• Hardware and Software Power Down
• 3-Wire Serial Interface
• Single Supply: 4.5V to 5.25V Operation
C1
C4
1000 pF
R2
(See Note A)
C3
R1
C2
PD_OUTBUF
CHIP_EN
CLOCK
DATA
STROBE
DGND
DGND
DVDD1
AVDD_PRES
GND
40 39 38 37 36 35 34 33 32 31
1
30
2
29
3
28
4
27
5
TRF3761
26
6
(TOP VIEW)
25
7
24
8
23
9
22
10
21
11 12 13 14 15 16 17 18 19 20
GND
AVDD_BIAS
RBIAS1
R3
2.37 kΩ
GND
VCTRL_IN
AVDD_VCO
AVDD_BUF
AVDD_CAPARRAY
GND
AVDD
APPLICATIONS
• Wireless Infrastructure
– WCDMA, CDMA, GSM
– Wideband Transceivers
– Wireless Local Loop
– RFID Transceivers
– Clock generation
– IF LO generation
R5
120 Ω
VDD
C5
10 pF
R6
120 Ω
VDD
C6
10 pF
C7
1000 pF
R4
4.75 kΩ
LOAD
A. See the Application Information section for
Loop Filter Design procedures.
AVAILABLE DEVICE OPTIONS
PART NUMBER
TRF3761-A
TRF3761-B
TRF3761-C
TRF3761-D
TRF3761-E
TRF3761-F
TRF3761-G
TRF3761-H
TRF3761-J
TRF3761-K
DESCRIPTION
Fstart
1493
1595
1660
1740
1805
1850
1920
2028
2140
2225
Div by 1
Fstop
1608
1711
1790
1866
1936
1984
2059
2175
2295
2386
Div by 2
Fstart
Fstop
746.5
804
797.5
855.5
830
895
870
933
902.5
968
925
992
960
1029.5
1014
1087.5
1070
1147.5
1112.5
1193
Div by 4
Fstart
Fstop
373.25
402
398.75
427.75
415
447.5
435
466.5
451.25
484
462.5
496
480
514.75
507
543.75
535
573.75
556.25
596.5
TRF3761 is a family of high performance, highly integrated frequency synthesizers, optimized for high
performance applications. The TRF3761 includes a low-noise, voltage-controlled oscillator (VCO) and an
integer-N PLL.
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.
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 © 2005–2007, Texas Instruments Incorporated