RF2608 Ver la hoja de datos (PDF) - RF Micro Devices
Número de pieza
componentes Descripción
Lista de partido
RF2608 Datasheet PDF : 4 Pages
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6
Typical Applications
• CDMA/FM Cellular Systems
• Supports Dual-Mode AMPS/CDMA
• Supports Dual-Mode TACS/CDMA
RF2608
CDMA/FM UPCONVERTER/BPSK MODULATOR
• Commercial and Consumer Systems
• Battery-Operated Systems
Product Description
The RF2608 is a complete upconverter designed for
CDMA/FM cellular applications. The IC contains a dou-
-A-
0.008
0.004
ble-balanced mixer stage and an output buffer amplifier
0.018
0.014
stage. This device may also be used to directly BPSK
modulate a carrier. The mixer is a Gilbert cell with emitter
0.196
0.189
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degeneration resistors to provide high IP3. The output
0.050
stage is a class-B, push-pull configuration to reduce the
overall current and still provide a good 50Ω output match.
The unit operates at a supply voltage of 2.7V to 5.0V and
does not require any external matching components
other than coupling capacitors. This circuit is designed as
part of the RFMD CDMA chipset, consisting of a Transmit
IF AGC Amp, this Transmit Upconverter, a Receive LNA/
8° MAX
0° MIN
0.157
0.150
0.244
0.229
0.034
0.016
Dimensions in mm
0.068
0.053
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".
Mixer, and a Receive IF AGC Amp.
Optimum Technology Matching® Applied
üSi BJT
GaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe HBT
Si CMOS
IF+ 1
IF- 2
GND 3
LO BYPASS 4
8 RF OUT
7 VCC
6 GND
5 LO
Package Style: SOIC-8
Features
• Supports Dual Mode Operation
• +7dBm Output Intercept Point
• Single 2.7V to 5.0V Power Supply
• Internally Matched Inputs and Outputs
• Buffered Output
• Double-Balanced Mixer
Ordering Information
RF2608
CDMA/FM Upconverter/BPSK Modulator
RF2608 PCBA Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev B3 010720
6-15
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