RF2486 RF Micro Devices, RF2486 Datasheet

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RF2486

Manufacturer Part Number
RF2486
Description
PCS LOW NOISE AMPLIFIER/MIXER
Manufacturer
RF Micro Devices
Datasheet
Product Description
The RF2486 is a monolithic integrated receiver front-end
for PCS, PHS, and WLAN applications. The IC contains
all of the required components to implement the RF func-
tions of the receiver front-end except for the passive filter-
ing and LO generation. It contains an LNA (low-noise
amplifiers), a double-balanced Gilbert cell mixer, a bal-
anced IF output, an LO isolation buffer amplifier, and an
LO output buffer amplifier for providing the buffered LO
signal as an output. The IC is designed to operate from a
single 3.6V power supply.
Optimum Technology Matching® Applied
ü
Rev A7 010717
Typical Applications
• CDMA/TDMA/DCS1900 PCS Systems
• PHS 1500/WLAN 2400 Systems
• General Purpose Downconverter
Si BJT
Si Bi-CMOS
LO BUFF EN
LNA IN
GND1
GND2
GND3
GND4
VCC1
VCC2
VCC3
LO IN
Functional Block Diagram
NC
NC
10
11
12
1
2
3
4
5
6
7
8
9
GaAs HBT
SiGe HBT
8
24
23
22
21
20
19
18
17
16
15
14
13
GaAs MESFET
Si CMOS
NC
GND9
VCC4
GND8
LNA OUT
GND7
MIX RF IN
GND6
IF-
IF+
GND5
LO BUFF OUT
• Micro-Cell PCS Base Stations
• Portable Battery-Powered Equipment
Features
Ordering Information
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
• Complete Receiver Front-End
• High Dynamic Range
• Single 3.6V Power Supply
• External LNA IP3 Adjustment
• 1500MHz to 2500MHz Operation
RF2486
RF2486 PCBA-L Fully Assembled Evaluation Board 1.96GHz
RF2486 PCBA-H Fully Assembled Evaluation Board 2.4GHz
PCS LOW NOISE AMPLIFIER/MIXER
0.344
0.337
8°MAX
Package Style: SSOP-24
0°MIN
PCS Low Noise Amplifier/Mixer
0.050
0.016
1
0.157
0.150
0.2440
0.2284
0.0098
0.0075
0.025
0.012
0.008
RF2486
http://www.rfmd.com
Fax (336) 664 0454
0.0688
0.0532
Tel (336) 664 1233
0.0098
0.0040
8-105
8

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RF2486 Summary of contents

Page 1

... PHS 1500/WLAN 2400 Systems • General Purpose Downconverter Product Description The RF2486 is a monolithic integrated receiver front-end for PCS, PHS, and WLAN applications. The IC contains all of the required components to implement the RF func- tions of the receiver front-end except for the passive filter- ing and LO generation ...

Page 2

... RF2486 Absolute Maximum Ratings Parameter Supply Voltage Input LO and RF Levels Ambient Operating Temperature Storage Temperature Parameter Overall RF Frequency Range LO Frequency Range IF Frequency Range Cascaded Performance Cascade Conversion Gain Cascade Input IP3 Cascade Noise Figure First Section (LNA) 8 Noise Figure Input VSWR ...

Page 3

... Mixer RF input pin. This pin is internally DC-blocked and matched GND7 Same as pin 17. Rev A7 010717 source imped- resistor to pin 16. Thus the dif- must blocking capacitor must be used if the IF CC RF2486 Interface Schematic 150 VCC1 VCC4 BIAS LNA BUFF EN IF- IF See pin 15 ...

Page 4

... RF2486 Pin Function Description 20 LNA OUT LNA output pin. This is an open-collector output. This pin is typically connected to pin 22 through a bias/matching inductor. This inductor, in conjunction with a series blocking/matching capacitor, forms a match- ing network to the 50 schematic). The LNA’s IP3 may be increased 10dB by connecting pin 10mA ...

Page 5

... trip 4 RF2486 ** otes ** strip 50 strip trip ...

Page 6

... RF2486 V CC C10 strip J1 LNA2 IN VCC C12 BUFF EN C14 strip *Components not normally populated. NOTES: C11 selected to Fine Tune L4 for IF Output Match at 280 MHz normally not populated. For applications requiring additional LNA IP3, see the datasheet for recommended resistance values. ...

Page 7

... Evaluation Board Layout 1.96GHz Board Thickness 0.075.6”, Board Material FR-4, Multi-Layer (8 mils between Layers 1 and 2, 31 mils between Layers 2 and 3, 1 ounce copper all layers) Rev A7 010717 Board Size 3.0” x 3.0” RF2486 8 8-111 ...

Page 8

... RF2486 Evaluation Board Layout 2.4GHz 8 8-112 Board Size 3.0” x 3.0” Rev A7 010717 ...

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