TRF3750: High Performance Integer-N PLL Frequency Synthesizer (Rev. B) 0 pages

TRF3750
SLWS146B - MARCH 2004 - REVISED AUGUST 2007
HIGH-PERFORMANCE INTEGER-N PLL FREQUENCY SYNTHESIZER
FEATURES
Single Device Covers Frequencies Up to
2.4 GHz
Dual Supply Range: 3 V - 3.6 V and
4.5 V - 5.5 V
Separate Charge Pump Supply (VCP) Up
to 8 V
Simple 3-Wire Serial Interface Allows for Fully
Programmable:
- A, B, and R Counters
- Dual Modulus Prescaler [8/9, 16/17, 32/33,
and 64/65]
- Charge Pump Current
Lock Detect Output (Digital and Analog)
Versatile Hardware and Software Power Down
Packaged in a 16-Pin TSSOP Thin Quad
FlatPack and a 20-Pin 4 x 4 mm QFN Package
APPLICATIONS
Wireless Infrastructure
- GSM, IS136, EDGE/UWC-136
- IS95, UMTS, CDMA2000
Portable Wireless Communications
Wireless LAN
Wireless Transceivers
Communication Test Equipment
DESCRIPTION
The TRF3750 frequency synthesizer is ideal for designing
the local os cillator portion of wireless transceivers by
providing complete programmability and ultra-low phase
noise. The device features a user-selectable dualmodulus
prescaler, a 14-bit reference (R) divider, a 6-bit A,
and a 13-bit B counter. The R divider allows the user to
select the frequency of choice for the phase-frequency
detector (PFD) circuit, and with the use of the counters
implement an N divider of value N = A + P x B. With an
extended charge-pump supply (VCP) of up to 8 V, a wide
variety of external VCOs can be used to complete the
phase-locked loop. Ultra-low phase noise and reference
spur performance make the TRF3750 ideal for generating
the local oscillator in the most demanding wireless
applications.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
RSET
CPOUT
CPGND
AGND
RFIN
RFIN
AVDD
REFIN
VCP
DVDD
MUXOUT
LE
DATA
CLOCK
CE
DGND
PW PACKAGE
(TOP VIEW)
MUXOUT
RGP PACKAGE
(TOP VIEW)
CPGND
CPOUT
RSET
VCP
DVDD
DVDD
REFIN
DGND
AVDD
1
2
3
4
5
15
14
13
12
11
6 7 8 9 10
20 19 18 17 16
AVDD
DGND
LE
DATA
CLOCK
RFIN CE
RFIN
AGND
AGND
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
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.
www.ti.com
Copyright © 2007, Texas Instruments Incorporated