AN611 Maxim Integrated Products, AN611 Datasheet
AN611
Manufacturer Part Number
AN611
Description
TD-SCDMA Radio Chipset Block Diagram for Handset Application
Manufacturer
Maxim Integrated Products
Datasheet
1.AN611.pdf
(3 pages)
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Overview
TD-SCDMA is the third-generation (3G) cellular phone standard currently under development in
China. In November 1999, the TD-SCDMA standard was adopted by the ITU as one of the
options in the 3GPP mobile communication standard.
TD-SCDMA combines time-division duplex (TDD) and CDMA with up-link (reverse-link)
synchronization, a software radio, and a smart antenna, to increase channel capacity and
improve bandwidth efficiency.
In the radio section of the handset, the TD-SCDMA radio section requires fast switching time,
high dynamic range, and high linearity in both the transmitter and receiver sections. Maxim's
chipset delivers the highest performance, the smallest implementation size, and the least
expensive radio solution available in the TD-SCDMA handset market. The following block
diagram shows a typical application.
Transmitter
The MAX236X is a complete quadrature transmitter, including a quadrature modulator, variable-
gain IF and RF amplifiers, an image-rejecting upconverting mixer, a dual RF and IF synthesizer,
and a dual-band power amplifier (PA) driver amplifier. It is the ideal transmitter for TD-SCDMA
because of these features:
WIRELESS, RF, AND CABLE
TD-SCDMA Radio Chipset Block Diagram for
Output power of +8dBm with excellent ACPR
A 100dB power-control range
Dual integer-N synthesizers for IF and RF
An image-reject upconverting mixer, which saves one SAW filter
China option for 3G cellular phone is the TD-SCDMA system. A detailed
handset transceiver diagram is presented showing MAX2361 as the
transmit IC, the MAX2291 as the power amplifier (PA), and the MAX2388
and MAX2309 form the receiver. A VCO buffer amplifier is used to provide
isolation and maintains a clean LO signal.
Handset Application
Jun 01, 2001
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AN611 Summary of contents
Page 1
WIRELESS, RF, AND CABLE TD-SCDMA Radio Chipset Block Diagram for China option for 3G cellular phone is the TD-SCDMA system. A detailed handset transceiver diagram is presented showing MAX2361 as the transmit IC, the MAX2291 as the power amplifier (PA), ...
Page 2
Power-supply current dropping as the RF output power is reduced Low-noise power during the power-down mode Availability in a 48-pin QFN package (7mm x 7mm) Power Amplifier The MAX229X is a linear amplifier optimized for TD-SCDMA application. It can deliver ...
Page 3
TD-SCDMA/GSM dual-mode transceiver reference design block diagram, Rev A More Information QuickView -- Full (PDF) Data Sheet MAX2309: QuickView MAX2361: -- QuickView -- Full (PDF) Data Sheet MAX2388: QuickView -- Full (PDF) Data Sheet MAX2472: -- Free Samples -- Free ...