RF2424
5
Typical Applications
• Digital Communications Systems
• GMSK,QPSK,DQPSK,QAM Modulation
• GSM and D-AMPS Systems
• Image-Reject Upconverters
• Spread Spectrum Communication Systems • AM, SSB, DSB Modulation
UHF QUADRATURE MODULATOR
Product Description
The RF2424 is a monolithic integrated quadrature modu-
lator IC capable of universal direct modulation for high-
frequency AM, PM, or compound carriers. Maximum out-
put power is +7.5dBm, which is achieved with low input I
and Q signal levels. This low-cost IC implements differen-
tial amplifiers for the modulation inputs, 90° carrier phase
shift network, carrier limiting amplifiers, two matched dou-
ble-balanced mixers, summing amplifier, and an output
RF amplifier which will drive 50Ω from 700MHz to
1000MHz.
0.157
0.150
0.012
0.008
0.196
0.189
0.025
-A-
0.0098
0.0040
5
MODULATORS AND
UPCONVERTERS
0.2440
0.2284
0.0688
0.0532
8° MAX
0°MIN
0.050
0.016
0.0098
0.0075
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
ü
Si BJT
Package Style: SSOP-16
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
Si Bi-CMOS
Features
• Single 2.7V to 5.5V Power Supply
• +7.5dBm Output Power
• No Tuning Required
• Low LO Input Level
• Digitally Controlled Power Down Mode
• 700MHz to 1000MHz Operation
I REF 1
Q REF 2
VCC1 3
MIXOUT 4
GND1 5
GND1 6
LO 7
GND3 8
-45°
+45°
16 ISIG
POWER
CONTROL
15 QSIG
14 GND1
13 VCC2
Σ
12 PD
11 GND1
10 GND2
9 RFOUT
Ordering Information
RF2424
RF2424 PCBA
UHF Quadrature Modulator
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 A6 010817
5-43
RFMD [ RF MICRO DEVICES ]
