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PDF RF2850 Data sheet ( Hoja de datos )

Número de pieza RF2850
Descripción DIRECT QUADRATURE MODULATOR
Fabricantes RF Micro Devices 
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RF2850
0 DIRECT QUADRATURE MODULATOR
RoHS Compliant & Pb-Free Product
Typical Applications
• UMTS Base Stations
• CDMA Base Stations
• GSM-EDGE/EGSM Base Stations
• WLAN and WLL Systems
• GMSK,QPSK,DQPSK,QAM Modulation
Product Description
The RF2850 is a direct quadrature modulator for use in
base stations and other communications systems.
RF2850 supports PCS, GSM, EDGE, CDMA2000, and
UMTS standards. This device features a narrow-band
operation at 1700MHz to 2500MHz with excellent carrier
and sideband suppression and ultra low noise floor. The
device is manufactured on an advanced GaAs HBT pro-
cess. The RF2850 operates from a single 5V supply and
is packaged in a low cost 4mmx4mm 16-pin leadless
package.
Optimum Technology Matching® Applied
Si BJT
9GaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe HBT
Si CMOS
InGaP/HBT
GaN HEMT
SiGe Bi-CMOS
16 15 14 13
GND 1
12 RFOUT
LO 2
LOREF 3
-45°
+45°
Σ
11 GND
10 VCC
GND 4
9 RFREF
5678
2 PLCS
-A- 0.10 C A
4.00 SQ.
2.00 TYP
0.70
0.65
0.10 C B
2 PLCS
0.05 C
0.90
0.85
0.05
0.00
0.10 C B
2 PLCS
3.75 SQ
0.10 C A
2 PLCS
0.60
0.24
TYP
12°
MAX
-B-
1.87 TYP
-C-
Shaded lead is pin 1.
Dimensions in mm.
0.35
0.23
0.10 M C A B
Pin 1 ID
0.20 R
SEATING
PLANE
2.25
1.95
SQ.
0.75
0.50
TYP
0.65
Package Style: QFN, 16-Pin, 4x4
Features
• Typical Carrier Suppression>40dBc
• Typical Sideband Suppression>40dBc
• Noise Floor better than -158dBm/Hz
• Single 5V Power Supply
Ordering Information
RF2850
Direct Quadrature Modulator
RF2850 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 A0 050616
5-51

1 page




RF2850 pdf
RF2850
Evaluation Board Schematic
1700MHz to 2500MHz (Differential Drive)
J2
QREF
50 Ω μstrip
50 Ω μstrip
J4
QSIG
VCC1
C9
100 pF
L1
1 nH
L2
J1
LO
50 Ω μstrip
X1
2.1 GHz
1 nH
VCC
C10
100 pF
16 15 14 13
1 12
2 11
-45°
+45°
Σ
3 10
49
5678
C12
3.9 pF
C14
0.5 pF
C13
3.9 pF
50 Ω μstrip
J6
RF OUT
X2
2.1 GHz
VCC2
J3
IREF
VIN
50 Ω μstrip
C1
2.2 pF
P1
L3
100 nH
L4
100 nH
VCC1
VCC2
C3
100 pF
50 Ω μstrip
J5
ISIG
Rev A0 050616
5-55

5 Page










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