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PDF RF2628 Data sheet ( Hoja de datos )
| Número de pieza | RF2628 | |
| Descripción | CDMA/FM UPCONVERTER/BPSK MODULATOR | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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6
Typical Applications
• CDMA/FM Cellular Systems
• Supports Dual-Mode AMPS/CDMA
• Supports Dual-Mode TACS/CDMA
RF2628
CDMA/FM UPCONVERTER/BPSK MODULATOR
• Commercial and Consumer Systems
• Battery-Operated Systems
Product Description
The RF2628 is a complete upconverter designed for
CDMA/FM cellular applications. The IC contains a dou-
ble-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 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 Chip Set, consisting of a Trans-
mit IF AGC Amp, this Transmit Upconverter, a Receive
LNA/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
0.192
+ 0.008
0.012
0.006
+ 0.003
-A-
0.118
+ 0.004 sq.
6° MAX
0° MIN
0.021
+ 0.004
0.0256
0.006
+ 0.002
0.034
NOTES:
1. Shaded lead is pin 1.
2. All dimensions are exclusive of
flash, protrusions or burrs.
3. Lead coplanarity: 0.002 with
respect to datum "A".
Package Style: MSOP-8
Features
• Supports Dual Mode Operation
• +9dBm Output Intercept Point
• Single 2.7V to 5.0V Power Supply
• Internally Matched Inputs and Outputs
• Buffered Output
• Double-Balanced Mixer
Ordering Information
RF2628
CDMA/FM Upconverter/BPSK Modulator
RF2628 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
6
Rev B4 010720
6-19
1 page  
Evaluation Board Layout
Board Size 1.500" x 1.500"
Board Thickness 0.031”, Board Material FR-4
RF2628
6
Rev B4 010720
6-23
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet RF2628.PDF ] | |
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