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ITM3010
Description
The ITM3010 is an optimized LNA/Mixer IC for triple-band quad-mode applications.
It provides a receiver front-end for cellular CDMA/AMPS, PCS 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 three-step LNA gain control
to minimize inter-modulation and cross-modulation due to strong jammers.
The image-reject mixer(IRM) has high image-reject ratio at low current
consumption, eliminating any external RF SAW filter on GPS signal path.
This feature saves the foot-print space and manufacturing cost simultaneously.
The ITM3010 includes an internal LO frequency divider which allows the
use of a single VCO for both Cellular and PCS bands. It also provide a
TX-LO buffer increasing the isolation performance along the path. The
ITM3010 is fabricated on an advanced SiGe BiCMOS process, and is available
in a small 32-pin 5mm x 5mm Leadless Plastic Chip Carrier (LPCC) package.
Features
- Operating frequency: Cellular: 869 ~ 894MHz, PCS: 1840 ~ 1990MHz
GPS: 157 MHz
- Easily adjustable Gain, NF, and IIP3
- Three step LNA gain control
- Internal LO divider for use of single VCO
- On-chip TX-LO buffer
- Small 32-pin LPCC package(5mm ×5mm ×0.9mm)
Applications
- Cellular CDMA/AMPS Mobile Phone(@ IS-95A/B/C, CDMA2000, CDMA20001X)
- CDMA PCS Mobile Phone(@ J-STD-008)
- 800MHz CDMA and TDMA Receivers
- 1800 MHz PCS Receivers
- GPS Receiver for E911 and Traveler Assistance
- Portable Radio Handset and Equipments
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