Wisdom
Semiconductor Inc.
For pricing, delivery, and ordering
market@swip.com.cn
Tel) 86-29-8386383
ITM2520
Cellular/GPS Image-Reject Receiver RF Front-end IC
Product Description :
The ITM2520 is an optimized LNA/Mixer IC for dual-band tri-mode applications. It provides a receiver front-end for cellular
CDMA/AMPS and GPS functions on a single chip. The LNAs/Mixers for both bands are designed for high gain, high linearity, and
low noise figure with flexible optimization of performance. The device offers an easy control of linearity and current, using one
external resistor, as well as a gain control to minimize intermodulation and cross-modulation due to strong jammers. The image-reject
mixer(IRM) has high image-reject ratio at low current consumption, eliminating external RF SAW filter on GPS signal path. This
feature saves the foot-print space and manufacturing cost simultaneously. The ITM2520 includes an internal LO frequency divider
which allows the use of a single VCO for both bands.
The ITM2520 is fabricated on an advanced SiGe BiCMOS process, and is available in a small 24-pin Leadless Plastic Chip Carrier
(LPCC) package.
Product Features :
鈥perating frequency :
鈥ellular: 869 ~ 894 MHz
鈥PS: 1540 ~ 1600 MHz
鈥asily adjustable Gain, NF, and IIP3
鈥wo step LNA gain control
鈥PS image-reject mixer eliminating RF SAW filter
鈥?0dB Gain, 2.2dB NF for GPS signal path
鈥nternal LO divider for use of single VCO
鈥n-chip Tx-LO buffer
鈥mall 24-pin LPCC package : 4.0mm
脳
4.0mm
脳
0.9mm
Functional Block Diagram
CLNA_OUT
VCC_MIX
CMIX_E
SLEEPB
13
12
11
CMIX_IN
FM_IF
CDMA_IFP
CDMA_IFN
GPS_IF
LOD
10
9
8
/2
GMIX_IN
24
1
LNA_GAIN
2
LO_OUT
3
MODE
4
BAND
5
LO_IN
6
TX_EN
7
RLNA
RMIX
15
18
CLNA_IN
CLNA_E
GLNA_IN
GLNA_OUT
19
20
17
16
14
ITM2520
Bias_control
21
22
23
Applications :
鈥ellular CDMA/AMPS Mobile Phone
(@ IS-95A/B/C, CDMA2000, CDMA20001X)
鈥?00 MHz CDMA and TDMA Receivers
鈥PS Receiver for E911 and Traveler Assistance
鈥ortable Radio Handset and Equipments
VCC_LNA
This document is a general product description and is subject to change without notice for improvement
Available Now
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