RF9938
Description
The RF9938 is a plete upconverter designed for PCS applications. The IC contains a double-balanced mixer stage and an output buffer amplifier stage. This device may also be used to directly BPSK modulate a carrier. The mixer is a Gilbert cell with emitter degeneration resistors to provide high IP3. The output stage is a class-B, push-pull configuration to reduce the overall current and still provide a good 50 Ω output match. The unit operates at 3.6V and is designed as part of the RFMD PCS CDMA Chip Set, consisting of a Transmit IF AGC Amp, this Transmit Upconverter, a Receive LNA/Mixer, and a Receive IF AGC Amp.
0.008 0.004 0.018 0.014
-A-
0.196 0.189 0.050
0.157 0.150 0.244 0.229
Dimensions in mm
0.068 0.053
8° MAX 0° MIN
0.034 0.016
0.009 0.007
NOTES: 1. Shaded lead is Pin 1. 2. All dimensions are excluding mold flash. 3. Lead coplanarity 0.005 with respect to datum "A".
Optimum Technology Matching® Applied
Si BJT Si Bi-CMOS
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Package Style: SOIC-8
Ga As...
