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.

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

Applications
• Cellular and/or PCS-band phones
• TDMA and/or AMPS-mode phones
• Portable battery powered equipment