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PDF RF2423 Data sheet ( Hoja de datos )
| Número de pieza | RF2423 | |
| Descripción | 100mW SPREAD-SPECTRUM TRANSMITTER IC | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RF2423 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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RF2423
5 100mW SPREAD-SPECTRUM TRANSMITTER IC
Typical Applications
• Digital and Analog Communication Systems • GMSK, QPSK, DQPSK, QAM Modulation
• Spread-Spectrum Communication Systems • AM, SSB, DSB Modulation
• Portable Battery-Powered Equipment
Product Description
The RF2423 is a monolithic integrated transmitter IC
capable of universal direct modulation for UHF AM, PM,
or compound carriers. The transmitter may be used
stand-alone for applications requiring not more than
100mW output power, or may be used to drive a final
power amplifier. The maximum output level is 100mW,
and is adjustable over a 25dB range by a single positive
voltage. This low-cost IC implements differential amplifi-
ers for the modulation inputs, 90 degree carrier phase
shift network, carrier limiting amplifiers, two matched dou-
bly-balanced mixers, variable gain summing amplifier for
level control, and 100mW linear (class AB) output ampli-
fier.
Optimum Technology Matching® Applied
Si BJT
!GaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe HBT
Si CMOS
GC 1
PHASE 2
VDD1 3
GND2 4
LO IN 5
GND1 6
I REF 7
I SIG 8
POWER
CONTROL
-45°
+45°
Σ
16 STAND BY
15 VDD2
14 VDD3
13 GND3
12 RF OUT
11 GND4
10 Q REF
9 Q SIG
.157
.150
1
.010
.018 .004
.014
.393
.386
.050
8 °MAX
0°MIN
.244
.228
.065
.043
.050 .010
.016 .007
Package Style: SOP-16
Features
• Single 5V Power Supply
• 100mW Output Power Into 50Ω
• 25dB Gain Control Range
• Excellent Phase & Amplitude Balance
• Digitally Controlled Stand-By Mode
• 800MHz to 1000MHz Operation
Ordering Information
RF2423
100mW Spread-Spectrum Transmitter IC
RF2423 PCBA Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
5
Rev A3 001218
5-35
1 page  
Application Schematic
RF2423
GAIN
CONTROL
VDD
100 nF
LO INPUT
22 nH
VREF
I INPUT
R
R
C
C
1
2
3
4
5
6
7
8
POWER
CONTROL
-45°
+45°
Σ
CMOS
16 STANDBY
VDD
15
Note 1 100 nF
14
Note 1 100 nF
13
12
11
R
10
9
22 pF
C
R
C
RF OUTPUT
VREF
Q INPUT
NOTE 1:
NOTE 2:
33 pF SMD capacitor mounted as close to the package pin as possible, grounded
through via to the ground plane with minimum inductance.
The values of R and C depend on the lowest frequency of the baseband signal.
5
Rev A3 001218
5-39
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet RF2423.PDF ] | |
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