TRF1212 Datasheet, PDF (1/3 Pages) Texas Instruments – 3.5-GHz Intergrated IF Up-Converter

TRF1112, TRF1212
www.ti.com
3.5-GHz Integrated IF Up-Converter
SLWS175 – APRIL 2005
FEATURES
• Low Phase Noise
• High Dynamic Range Image-Reject
Downconverter
• Selectable IF Filters
• Internal or External AGC Control With Peak
Detector and Voltage Reference
• Analog Gain Control Range
• Direct Interface to A/D
• Dual VCO/PLL With On-Chip Resonator For
Double Down-Conversion Architecture
• S-Band LO Frequency Range:
– TRF1112: 1818 to 2268 MHz
– TRF1212: 2818-MHz to 3382-MHz
• UHF LO Frequency Range: 360 to 456 MHz
• Phase Noise is 0.5 RMS Typ 100 Hz to 1 MHz
• Rx Noise Figure of 5 dB, Typ
• UHF LO Tuning Step Size of 125 kHz
• Typical Gain of 90 dB, Including 15-dB Loss
IF2 SAW Filter
• Input Third Order Intercept Point > 0 dBm
• Input 1-dB Compression Point > -10 dBm
• Gain Control Range of 90 dB Typ
DESCRIPTION
The TRF1112 / TRF1212 are UHF-VHF down con-
verters with integrated UHF and S-band frequency
synthesizers for radio applications in the 2 GHz to 4
GHz range. The device integrates an image reject
mixer, IF gain blocks, automatic gain control (AGC),
and two complete phase locked loop (PLL) circuits
including: VCOs, resonator circuit, varactors, dividers,
and phase detectors.
The TRF1112 / TRF1212 are designed to function as
part of Texas Instruments 2.5-GHz and 3.5-GHz
complete radio chipsets, respectively. In the chipset,
two chips function together to double-down-convert
RF frequencies to an IF frequency that is suitable for
most baseband modem ADCs. The TRF1112 /
TRF1212 performs the second down conversion from
the first IF frequency (480 MHz typical) to a final IF
frequency (20-50 MHz). The radio chipset features
sufficient linearity, phase noise and dynamic range to
work in single carrier or multi-carrier, line-of-sight or
non-line-of-sight, IEEE standard 802.16, BWIF, or
proprietary systems. Due to the modular nature of the
chipset, it is ideal for use in systems that employ
transmit or receive diversity.
DEVICE INFORMATION
LPCC−48 PACKAGE
(TOP VIEW)
CP2O
1
LD1
2
LF1
3
EN
4
FRBP
5
VCCD1
6
FR
7
VCCD2
8
CLK
9
DATA
10
LF2
11
LD2
12
36
AGCO
35
IFBPB
34
IF1IP
33
IF1IN
32
VCCA
31
VCCB
30
VERR
29
VREF
28
VFB
27
VCCC
26
IF2AOP
25
IF2AON
Figure 1. TRF1112 / TRF1212 Pin Out
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 forma-
tive 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.
Copyright © 2005, Texas Instruments Incorporated