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RF9938PCBA 반도체 회로 부품 판매점

PCS UPCONVERTER/BPSK MODULATOR



RF Micro Devices 로고
RF Micro Devices
RF9938PCBA 데이터시트, 핀배열, 회로
RF9938
6 PCS UPCONVERTER/BPSK MODULATOR
Typical Applications
• CDMA/TDMA/DCS1900 PCS Systems
• PHS 1500/ WLAN 2400 Systems
• General Purpose Upconverter
• BPSK Modulation
• Micro-Cell PCS Base Stations
• Portable Battery-Powered Equipment
Product Description
The RF9938 is a complete upconverter designed for PCS
applications. The IC contains a double-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 resis-
tors to provide high IP3. The output stage is a class-B,
push-pull configuration to reduce the overall current and
still provide a good 50output match. The unit operates
at 3.6V and is designed as part of the RFMD PCS CDMA
Chip Set, consisting of a Transmit IF AGC Amp, this
Transmit Upconverter, a Receive LNA/Mixer, and a
Receive IF AGC Amp.
0.196
0.189
8° MAX
0° MIN
0.157
0.150
0.244
0.229
0.034
0.016
0.018
0.014
0.008
0.004
-A-
0.050
Dimensions in mm
0.068
0.053
0.009
0.007
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
Si BJT
üGaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe HBT
Si CMOS
IF+ 1
IF- 2
GND 3
LO+ 4
8 RF OUT
7 VCC
6 GND
5 LO-
Package Style: SOIC-8
Features
• Supports Dual Mode Operation
• +8dBm Output Intercept Point
• Single 3.6V Power Supply
• Internally Matched Inputs and Outputs
• Buffered Output
• Double-Balanced Mixer
Ordering Information
RF9938
PCS Upconverter/BPSK Modulator
RF9938 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 A3 010720
6-61


RF9938PCBA 데이터시트, 핀배열, 회로
RF9938
Absolute Maximum Ratings
Parameter
Supply Voltage
Input RF Power
Operating Ambient Temperature
Storage Temperature
Rating
-0.5 to +7.0
+6
-30 to +80
-30 to +150
Unit
VDC
dBm
°C
°C
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate
at the time of this printing. However, RF Micro Devices reserves the right to
make changes to its products without notice. RF Micro Devices does not
assume responsibility for the use of the described product(s).
Parameter
Overall
RF Output Frequency Range
Conversion Gain
Noise Figure
Output IP3
6 Output ACP
Output VSWR
Spurious Product Rejection
IF Input
IF Frequency
Differential Input Impedance
IF to RF Output Isolation
IF to LO Isolation
LO Input
LO Frequency Range
LO Level
LO to RF Output Leakage
RF to LO Isolation
LO Input VSWR
Power Supply
Voltage
Current Consumption
Specification
Min.
Typ.
Max.
1200 to 2500
-3.8 -2.8 -1.0
14
+5 +8
-64
1.5:1
30
DC to 200
265
30
30
1000 to 2700
-6 to 0
-30
30
2:1
-20
3.6 ± 5 %
27
33
Unit
MHz
dB
dB
dBm
dB
dBc
MHz
dB
dB
MHz
dBm
dBm
dB
V
mA
Condition
T=25°C, VCC=3.6V, RF out=1880MHz,
LO=1750MHz @ -3dBm, IF=130MHz
@ -10dBm in
PIN=-13dBm per Tone
Referenced to a 1.23MHz in-band power. At
±1.25MHz Offset (CDMA PIN=-10dBm)
50
Referenced to RF output
50
6-62
Rev A3 010720




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RF9938PCBA

PCS UPCONVERTER/BPSK MODULATOR - RF Micro Devices