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The following chip set creates a radio solution for Dual Band CDMA/AMPS handsets. Some of these components will also work well in single band CDMA applications, including CDMA-1900, CDMA-1700, and CDMA-800.
- Chipset is designed for dual-band handsets
- Optimized operation for single cell Li-Ion battery (3.6V)
- Small Size
- On-chip control function eliminates external control circuits
- MultiPak (Multilayer Substrate Package PCB) technology used for dual-band PAM, matching components, control functions in package
- SOT-343 LNA: smallest LNA available with on-chip Bypass switch
- Migrating to BCC packages in ‘00
- Low Power Consumption
- Variable IIP3 Receiver (LNA and Downconverter) allows to minimize drawing current
- LNA Bypass state consumes no current
- PA efficiency optimized for medium power (16dBm), Low IQ (quiescent current) for lower power state
- Tx Driver amplifier uses adaptive biasing
- High Receiver Sensitivity
- Split LNA architecture allows to use Low Noise PHEMT technology (either PHEMT LNA or Disc PHEMT)
- Tx chain architecture with split-band filtering (HPMX-7202) and gain distribution minimizes Rx band noise
- Low Cost
- Extensive use of lowest-cost Silicon technology except LNA ( GaAs PHEMT)
- using high-volume industry-standard packages (SOT-343, TQFP and BCC) for RFIC
MGA-72543 Step Gain LNA with Bypass Switch
- Incorporated functions:
- Low Noise Amplifier
adjustable bias allowing selectable linearity and stepped gain (for use as driver amplifier)
on chip bypass switch to reduce current and boost dynamic range in the presence of a large input signal
- Key specs:
- 3 Volt, 20 mA nominal operation (5 uA with switch closed)
- LNA: NF=1.5 dB, Ga=14 dB, IP3i=+10.5 dBm
- switch: IL=2.5 dB, IP3i=+295 dBm
- Use
- LNA for CDMA handsets (CDMA 1900, CDMA 800, dual band dual mode, dual band tri-mode)
- Step Gain Driver Amplifier for CDMA handsets (CDMA 1900, CDMA 800, dual band dual mode, dual band tri-mode)
- Modeling information
- Beta Release of MGA-72543 ADS Behavioral Model
- Incorporated functions:
- discrete psuedomorphic high electron mobility transistor
- Use:
- general purpose device (low noise amplifier for CDMA PCS handsets)
Preliminary: HPMX-7102 CDMA/AMPS Dual-Band Dual-Mode Downconverter
- Incorporated functions:
- separate LNA-mixer chains for PCS, cellular and AMPS
- Use:
- IS-95 Dual-Band Triple-Mode (AMPS/Cellular-CDMA/PCS-CDMA) handsets
Preliminary: HPMX-7201 CDMA/AMPS Dual-Band Dual-Mode Upconverter/Driver Amplifier
- Incorporated functions:
- PCS-CDMA chain: upconverter, RF variable gain driver amplifier with adaptive biasing, band select switch
- AMPS chain: single sideband upconverter, driver amplifier
- Use:
- IS-95 Dual-Band AMPS/PCS CDMA handsets
Preliminary: HPMX-7202 CDMA/AMPS Dual-Band Tri-Mode Upconverter/Driver Amplifier
- Incorporated functions:
- PCS-CDMA chain: upconverter, RF variable gain driver amplifier with adaptive biasing, band select switch
- Cellular chain: 2 upconverters and driver amplifiers; mode pin for toggling
- Use:
- IS-95 Dual-Band Triple-Mode (AMPS/Cellular-CDMA/PCS-CDMA) handsets
Preliminary: QPMX-9804 Cellular-CDMA/PCS-CDMA/AMPS Dual-Band Tri-Mode Power Amplifier Module
- Incorporated functions:
- PCS and Cellular Power Amplifiers, PCS and Cellular driver amplifiers, power control circuitry and dynamic bias control
- Use:
- Dual-Band CDMA handsets, Wireless Data terminals, WLL, Base Station Driver
Future additions to this chipset include:
CDMA IF VGA/ modulator
CDMA IF VGA/ demodulator
For more information on these products, please  e-mail us
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