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CX74037 - Transmit RF

Datasheet Summary

Description

PA Drivers.

Two PA drivers are included, the 800 MHz driver The CX74037 is a TDMA transmitter for the 800 MHz and 1900 and the 1900 MHz driver.

Each driver takes its input from the MHz bands.

Features

  • Sectional enable lines for independent control of circuits within the chip.
  • 90 dB IF VGA range.
  • Separate IF frequencies can be used for the 800 MHz (AMPS) and 1900 MHz Bands (PCS).
  • Dual drivers for 800 MHz and 1900 MHz.
  • PA driver is deactivated by using the Driver Enable signal when there is no transmission.
  • Available in a 48-pin, 7x7 LGA package with downset paddle.

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Datasheet preview – CX74037

Datasheet Details

Part number CX74037
Manufacturer Conexant Systems
File Size 186.72 KB
Description Transmit RF
Datasheet download datasheet CX74037 Datasheet
Additional preview pages of the CX74037 datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com CX74037 Transmit RF IC for TDMA or AMPS Applications Conexant’s CX74037 Transmit RF Application-Specific Integrated Circuit (ASIC) is a triple-mode, dual-band transmitter intended for use in IS-136 compliant cellular phones. As a dual mode IC, it can be used in Time Division Multiple Access (TDMA) mode or Advanced Mobile Phone System (AMPS) mode. The device is available in a 48-pin 7x7 Land Grid Array (LGA) package with downset paddle. The CX74037 RF IC device includes the following functional components: • • • • • In-Phase and Quadrature (I/Q) modulator Two Intermediate Frequency (IF) Voltage Controlled Oscillator (VCO) inputs IF Variable Gain Amplifier (VGA) Two upconverters Two drivers for external Power Amplifiers (PAs).
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