|
|
Teilenummer | RF2423 |
|
Beschreibung | 100mW SPREAD-SPECTRUM TRANSMITTER IC | |
Hersteller | RF Micro Devices | |
Logo | ||
Gesamt 8 Seiten 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
RF2423
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P1-1
P1-2
P1-3
P1-4
P1
1 QSIG
2 QREF
3 IREF
4 ISIG
5 GND
P2-1
P2-2
P2-4
P2-5
P2
1 LEVEL
2 PHASE
3 GND
4 VDD
5 STBY
P2-1
C4
100 nF
2423400 Rev -
5 C5 1
16
100 nF
P2-2
POWER
2
CONTROL
15
C3
36 pF
P2-5
P2-4
C7
100 pF
3
4
P2-4
14 C2 C6
36 pF
100 nF
13
LO IN
J1
P1-3
P1-4
L1
22 nH
R2
33 Ω
R1
22 Ω
5
-45°
+45°
6
7
Σ
8
12
C1
11
36 pF
R3
0Ω
10
9
R4
22 Ω
RF OUT
J2
P1-2
P1-1
5-40
Rev A3 001218
6 Page | ||
Seiten | Gesamt 8 Seiten | |
PDF Download | [ RF2423 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
RF2420 | PROGRAMMABLE ATTENUATOR | RF Micro Devices |
RF2420PCBA | PROGRAMMABLE ATTENUATOR | RF Micro Devices |
RF2421 | 10dB SWITCHED ATTENUATOR | RF Micro Devices |
RF2421PCBA | 10dB SWITCHED ATTENUATOR | RF Micro Devices |
RF2422 | 2.5GHZ DIRECT QUADRATURE MODULATOR | RF Micro Devices |
Teilenummer | Beschreibung | Hersteller |
CD40175BC | Hex D-Type Flip-Flop / Quad D-Type Flip-Flop. |
Fairchild Semiconductor |
KTD1146 | EPITAXIAL PLANAR NPN TRANSISTOR. |
KEC |
www.Datenblatt-PDF.com | 2020 | Kontakt | Suche |