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PRODUCT PREVIEW
FEATURES
DEVICE INFORMATION
DESCRIPTION
LPCC-48 PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
CP2O
LD1
LF1
EN
FRBP
VCCD1
FR
VCCD2
CLK
DATA
LF2
LD2
13
14
15
16
17
18
19
20
21
22
23
24
CP2O
LO2TUN
LO2BPB
VDET
AGCI
LO2BP
A
VCCLO2
BBON
BBOP
VBGR
IF2BON
IF2BOP
36
35
34
33
32
31
30
29
28
27
26
25
AGCO
IFBPB
IF1IP
IF1IN
VCCA
VCCB
VERR
VREF
VFB
VCCC
IF2AOP
IF2AON
48
47
46
45
44
43
42
41
40
39
38
37
EXTLO1N
EXTLO1P
VCCLO1
LO1OP
LO1ON
LO1BP
A
LO1TUN
LO1BPB
IF2BIN
IF2BIP
IF2AIN
IF2AIP
TRF1112, TRF1212
SLWS175 APRIL 2005
3.5-GHz Integrated IF Up-Converter
The TRF1112 / TRF1212 are designed to function as
part of Texas Instruments 2.5-GHz and 3.5-GHz
·
Low Phase Noise
complete radio chipsets, respectively. In the chipset,
·
High Dynamic Range Image-Reject
two chips function together to double-down-convert
Downconverter
RF frequencies to an IF frequency that is suitable for
most baseband modem ADCs. The TRF1112 /
·
Selectable IF Filters
TRF1212 performs the second down conversion from
·
Internal or External AGC Control With Peak
the first IF frequency (480 MHz typical) to a final IF
Detector and Voltage Reference
frequency (20-50 MHz). The radio chipset features
·
Analog Gain Control Range
sufficient linearity, phase noise and dynamic range to
work in single carrier or multi-carrier, line-of-sight or
·
Direct Interface to A/D
non-line-of-sight, IEEE standard 802.16, BWIF, or
·
Dual VCO/PLL With On-Chip Resonator For
proprietary systems. Due to the modular nature of the
Double Down-Conversion Architecture
chipset, it is ideal for use in systems that employ
·
S-Band LO Frequency Range:
transmit or receive diversity.
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
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.
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-
Copyright © 2005, Texas Instruments Incorporated
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.
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