RF2461 查看數據表（PDF） - RF Micro Devices
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RF2461 Datasheet PDF : 14 Pages
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Preliminary
8
Typical Applications
• CDMA/FM Cellular Systems
• Supports Dual-Mode AMPS/CDMA
• Supports Dual-Mode TACS/JCDMA
RF2461
CDMA/FM LOW NOISE AMPLIFIER/MIXER
900MHZ DOWNCONVERTER
• General Purpose Downconverter
• Commercial and Consumer Systems
• Portable Battery-Powered Equipment
Product Description
1.00
0.90
4.00
sq.
The RF2461 is a receiver front-end designed for the
0.60
receive section of dual-mode CDMA/FM cellular applica-
0.24 typ
0.65
0.30
4 PLCS
tions. It is designed to amplify and downconvert RF sig-
nals, while providing 30dB of stepped gain control range.
3 0.20
Features include digital control of LNA gain, mixer gain,
2.10
sq.
and power down mode. Another feature of the chip is
adjustable IIP3 of the LNA and mixer using an off-chip
12°
0.75
current setting resistor. Noise figure, IP3, and other specs
MAX
0.50
0.23
are designed to be compatible with the IS-98B interim
0.05
0.50
0.13
4 PLCS
standard for CDMA cellular communications. The IC is
Dimensions in mm.
NOTES:
Note orientation of package.
8
manufactured on an advanced Silicon Germanium HBT
process and is in a 4mmx4mm, 20-pin, leadless chip car-
rier.
1 Shaded lead is Pin 1.
2 Pin 1 identifier must exist on top surface of package by identification
mark or feature on the package body. Exact shape and size is optional.
3 Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
4 Package Warpage: 0.05 mm max.
5 Die Thickness Allowable: 0.305 mm max.
Optimum Technology Matching® Applied
Si BJT
Si Bi-CMOS
GaAs HBT
üSiGe HBT
GaAs MESFET
Si CMOS
20
19
18
17
16
LNA GAIN 1
15 IF2+
MIX GAIN 2
14 IF2-
LNA IN 3
13 BYPASS
VCC1 4
12 IF1+
GND1B 5
11 IF1-
6
7
8
9
10
Package Style: LCC, 20-Pin, 4x4
Features
• Complete Receiver Front-End
• Stepped LNA/Mixer Gain Control
• Adjustable LNA/Mixer Bias Current
• Adjustable LNA/Mixer IIP3
• Meets IMD Tests with Three Gain States/
Two Logic Control Lines
Ordering Information
RF2461
RF2461 PCBA
CDMA/FM Low Noise Amplifier/Mixer 900MHz
Downconverter
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
Rev A13 010607
8-123
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