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RF9958PCBA Datasheet CDMA/FM TRANSMIT MODULATOR/ IF AGC/ AND UPCONVERTER

Manufacturer: RF Micro Devices (now Qorvo)

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General Description

The RF9958 is an integrated complete Quadrature Modulator, IF AGC amplifier, and Upconverter designed for the transmit section of dual-mode CDMA/FM cellular and PCS applications.

It is designed to modulate baseband I and Q signals, amplify the resulting IF signals while providing 95dB of gain control range, and perform the final upconversion to UHF.

Noise Figure, IP3, and other specifications are designed to be compatible with the IS-98 Interim Standard for CDMA cellular communications.

Overview

RF9958 5 Typical Applications • CDMA/FM Cellular Systems • CDMA PCS Systems • Wireless Local Loop Systems • Spread Spectrum Cordless Phones • High Speed Data Modems • General Purpose Digital Transmitters CDMA/FM.

Key Features

  • Supports Dual Mode Operation.
  • Digitally Controlled Power Down Modes MODE GC 1 27.
  • 2.7V to 3.3V Operation.
  • Digital First LO Quadrature Divider.
  • Double-Balanced UHF Upconvert Mixer.
  • IF AGC Amp with 95 dB Gain Control Q SIG 2 Q REF 3 LO1- 8 LO1+ 9 I REF 5 I SIG 4 Band Gap Reference Quad. ÷2 Gain Control Σ 25 MOD OUT+ 24 MOD OUT21 MIX IN22 MIX IN+ Ordering Information 13 PD1 15 PD2 17 RF OUT 19 LO2+ 20 LO2- 10 G OUT RF9958 RF9958 PCB.

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