RF2374 Datasheet PDF - RF Micro Devices

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RF2374
RF Micro Devices

Part Number RF2374
Description 3V LOW NOISE AMPLIFIER
Page 8 Pages


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RF2374
3V LOW NOISE AMPLIFIER
RoHS Compliant & Pb-Free Product
Package Style: QFN, 8-Pin, 2mmx2mmx0.6mm
Features
„ Low Noise and High Intercept
Point
„ Adjustable Bias Current
„ Power Down Control
„ Low Insertion Loss Bypass
Feature
„ 1.8V to 4V Operation (See
Note: Page 2)
„ 800MHz to 3.8GHz Opera-
tion
„ ESD Class 1B
Applications
„ WLAN LNA with Bypass Fea-
ture
„ CDMA PCS LNA with Bypass
Feature
„ GPS LNA with Bypass Feature
„ General Purpose Amplifica-
tion
„ WiMAX LNA with Bypass Func-
tion
„ CDMA 800 LNA
RF IN 1
8
7
6 RF OUT
GND 2
Logic
Control
34
5 GND
Functional Block Diagram
Product Description
The RF2374 is a switchable low noise amplifier with a high dynamic range
designed for digital cellular and WLAN applications. The device functions
as an outstanding front end low noise amplifier with ICC as low as 3mA.
The bias current may be set externally. The IC is featured in a
2mmx2mmx0.6mm module-compatible plastic package.
Ordering Information
RF2374
RF2374 PCBA-410
RF2374 PCBA-411
3V Low Noise Amplifier
Fully Assembled Evaluation Board, 2.3GHz to 3.8GHz with
standard tune
Fully Assembled Evaluation Board, 1.5GHz to 2.2GHz with
standard tune
Optimum Technology Matching® Applied
9GaAs HBT
SiGe BiCMOS
GaAs pHEMT
GaN HEMT
GaAs MESFET
Si BiCMOS
Si CMOS
InGaP HBT
SiGe HBT
Si BJT
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
Rev A0 DS070705
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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RF2374
Absolute Maximum Ratings
Parameter
Rating
Unit
Supply Voltage
Input RF Level
-0.5 to +6.0
+5 (see note)
VDC
dBm
Current Drain, ICC
Operating Ambient Temperature
32
-40 to +85
mA
°C
Storage Temperature
-40 to +150
°C
NOTE: Exceeding any one or a combination of the above maximum rating lim-
its may cause permanent damage. Input RF transients to +15dBm will not
harm the device. For sustained operation at inputs >+5dBm, a small dropping
resistor is recommended in series with the VCC in order to limit the current due
to self-biasing to <32mA.
Caution! ESD sensitive device.
The information in this publication is believed to be accurate and reliable. How-
ever, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use,
nor for any infringement of patents, or other rights of third parties, resulting
from its use. No license is granted by implication or otherwise under any patent
or patent rights of RFMD. RFMD reserves the right to change component cir-
cuitry, recommended application circuitry and specifications at any time without
prior notice.
RoHS status based on EUDirective2002/95/EC (at time of this document revi-
sion).
Parameter
Operating Range
Frequency Range
WLAN Low Noise Amplifier
Frequency
HIGH GAIN MODE
Gain
Noise Figure
Input IP3
IP1dB
Current Drain
BYPASS MODE (Low Gain)
Gain
Input IP3
Current Drain
GPS Low Noise Amplifier
Frequency
Gain
Noise Figure
Input IP3
WiMAX Low Noise Amplifier
Frequency
Gain
Noise Figure
Input IP3
CDMA Low Noise Amplifier
HIGH GAIN MODE
Frequency
Gain
Noise Figure
Input IP3
Current Drain
Specification
Min. Typ. Max.
800 4000
2450
13.5
+7
0
-4.0
+19
14.5
1.3
+9
7
-3.0
+21
2.0
1.5
-2.0
3.0
1575
17.5
1.0
+7.0
3500
11.0
1.6
+10.0
869 894
19
1.0
+2.0
7
Unit
MHz
MHz
dB
dB
dBm
dBm
mA
dB
dBm
mA
MHz
dB
dB
dBm
MHz
dB
dB
dBm
Condition
TAMB=+25°C, VCC=3.0V
Gain Select<0.8V, VREF=3V, T=+25°C
IIP3 will improve if ICC is raised above 7mA.
Gain Select>1.8V
Note: Bypass mode insertion loss will degrade
gradually as VCC goes below 2.7V.
ICC = 7 mA
ICC = 7 mA
At 3500MHz
At 3500MHz
IIP3 will improve if ICC is raised above 7mA.
MHz
dB
dB
dBm
mA
IIP3 will improve if ICC is raised above 7mA.
2 of 8
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A0 DS070705



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RF2374
Parameter
Specification
Min. Typ. Max.
Unit
Condition
Power Supply
Voltage (VCC)
3V
Gain Select Low
0.8 V High Gain mode.
Gain Select<0.8V, VREF=3V
Gain Select High
1.8
V Low Gain mode.
Gain Select>1.8V, VREF=0V
Power Down 0 5 μA Gain Select<0.8V, VREF=0V, VCC=3.0V
Bias note: Due to the presence of ESD protection circuitry on the RF2374, the maximum allowable collector bias voltage (pin 6) is 4.0V. Higher
supply voltages such as 5V are permissible if a series resistor is used to drop VCC to <4.0V for a given ICC.
Rev A0 DS070705
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
3 of 8



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RF2374
Pin Function Description
Interface Schematic
1
RF IN
RF input pin. This part is designed such that 50Ω is the optimal source
impedance for best noise figure. Best noise figure is achieved with only a
series capacitor on the input.
To Bias
Circuit
RF OUT
RF IN
2
GND1
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
3
VREF
For low noise amplifier applications, this pin is used to control the bias cur-
rent. An external resistor can be used to set the bias current for any VBIAS
voltage. This device will have good gain and noise figure with ICC as low as
3 mA.
VREF
4 GAIN SELECT This pin selects high gain and bypass modes.
Gain Select<0.8V, high gain.
Gain Select>1.8V, low gain.
5
GND2
See GND1.
6
7
8
Pkg
Gnd
RF OUT
NC
NC
GND
Amplifier output pin. This pin is an open-collector output. It must be biased
to VCC through a choke or matching inductor.
Not connected.
Not connected.
This pad should be connected to the ground plane by vias directly under
the device.
INDEX
AREA
2.20
Package Drawing
2 PLCS
0.10 C
0.10 C
2 PLCS
0.63
0.53
0.152
REF
B
A
2.20
0.65
0.05
0.00
SEATING
PLANE
0.10
MAX
C
11..2000TYP
Dimensions in mm.
Shaded lead is pin 1.
0.31
0.21
0.28
0.18
0.10 M C A B
4 of 8
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A0 DS070705



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