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RF2495 Schematic ( PDF Datasheet ) - RF Micro Devices

Teilenummer RF2495
Beschreibung LOW CURRENT LNA/MIXER
Hersteller RF Micro Devices
Logo RF Micro Devices Logo 




Gesamt 6 Seiten
RF2495 Datasheet, Funktion
www.DataSheet4U.com
0
RF2495
900MHZ 3V LOW CURRENT LNA/MIXER
Typical Applications
• UHF Digital and Analog Receivers
• Commercial and Consumer Systems
• Digital Communication Systems
• Portable Battery-Powered Equipment
• Spread-Spectrum Communication Systems • General Purpose Frequency Conversion
Product Description
The RF2495 is a front-end receiver IC chip developed for
the handset/portable battery-powered equipment mar-
kets. The chip contains an RF 15dB attenuator, an LNA
and a passive mixer. By using a state-of-the-art Silicon
Bi-CMOS process, the LNA has high dynamic range
under low DC operating conditions and the passive mixer
requires no DC bias at all. Packaged in the industry-stan-
dard MSOP-10 package, the device is well-suited for lim-
ited board space applications.
0.0197
± 0.0004
6.0°
0.0°
0.192
0.118
0.038
± 0.006
0.008
0.118
0.021
± 0.004
0.014 TYP
0.006
± 0.002
0.004
± 0.002
Optimum Technology Matching® Applied
Si BJT
GaAs HBT
GaAs MESFET
Si Bi-CMOS
InGaP/HBT
SiGe HBT
Si CMOS
!GaN HEMT
SiGe Bi-CMOS
VCC1 1
LNA IN 2
GND2 3
GND1 4
ATTN 5
Switched
Attenuator
Chip Power
ON/OFF
10 PD
9 GATE
8 DRAIN
7 SOURCE
6 LNA OUT
Functional Block Diagram
Rev A4 030220
Package Style: MSOP-10
Features
• Single Supply 3V Operation
• 1.9dB LNA NF
• 0dBm Input IP3
• Small MSOP-10 Package
• Low Current Drain (11mA maximum)
• Very Low Cost
Ordering Information
RF2495
900MHz 3V Low Current LNA/Mixer
RF2495 PCBA Fully Assembled Evaluation Board
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
8-281






RF2495 Datasheet, Funktion
RF2495
LNA: Gain versus Frequency Over Temperature
(VCC=2.78V)
20.0
16.0
12.0
-40°C High Gain [dB]
25°C High Gain [dB]
8.0 85°C High Gain [dB]
-40°C Low Gain [dB]
25°C Low Gain [dB]
85°C Low Gain [dB]
4.0
0.0
800.0
825.0
850.0
875.0 900.0 925.0
Frequency (MHz)
950.0
975.0 1000.0
LNA: Noise Figure versus Frequency Over Temperature
(VCC=2.78V)
3.0
2.5
2.0
1.5
1.0
800.0
825.0
850.0
-40°C Noise Figure [dB]
25°C Noise Figure [dB]
85°C Noise Figure [dB]
875.0 900.0 925.0 950.0 975.0 1000.0
Frequency (MHz)
Mixer: Conversion Gain versus Frequency,
OIP3 versus Frequency Over Temperature
11.0
9.0
7.0
5.0
3.0 -40.0°C Conversion Gain [dB]
25.0°C Conversion Gain [dB]
85.0°C Conversion Gain [dB]
1.0 -40.0°C OIP3 [dBm]
25.0°C OIP3 [dBm]
-1.0 85.0°C OIP3 [dBm]
-3.0
-5.0
-7.0
800.0
8-286
850.0
900.0
Frequency (MHz)
950.0
1000.0
VCC=2.78V, LO=4dBm
LNA: IIP3 versus Frequency and
P1dB versus Frequency Over Temperature (VCC=2.78V)
5.0
4.0
3.0
2.0
-40°C IIP3 [dBm]
1.0 25°C IIP3 [dBm]
85°C IIP3 [dBm]
-40°C P1dBOut [dBm]
0.0 25°C P1dBOut [dBm]
85°C P1dBOut [dBm]
-1.0
800.0
825.0
850.0
875.0 900.0 925.0
Frequency (MHz)
950.0
975.0 1000.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
-2.0
-4.0
-6.0
-8.0
-2.0
Mixer: Conversion Gain versus LO Power,
OIP3 versus LO Power Over Temperature
-40.0°C_Conversion Gain [dB]
25.0°C_Conversion Gain [dB]
85.0°C_Conversion Gain [dB]
-40.0°C_OIP3 [dBm]
25.0°C_OIP3 [dBm]
85.0°C_OIP3 [dBm]
0.0 2.0 4.0 6.0 8.0 10.0
LO Power (dBm)
VCC=2.78V, Freq=900MHz
Rev A4 030220

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