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Teilenummer | AGPS-L001 |
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Beschreibung | GNSS Low Noise amplifier | |
Hersteller | AVAGO | |
Logo | ||
Gesamt 20 Seiten AGPS-L001
GNSS Low Noise amplifier with Variable bias current
and shutdown function
Data Sheet
Description
Avago Technologies’ AGPS-L001 is an ultra low-noise am-
plifier designed for GNSS band (GPS, GLONASS, Galileo
and Compass) applications. The LNA uses Avago Tech-
nologies’ proprietary GaAs Enhancement-mode pHEMT
process to achieve high gain with very low noise figures
and high linearity. Noise figure distribution is very tightly
controlled. Gain and supply current are guaranteed pa-
rameters. A CMOS compatible shutdown pin is included
to turn the LNA off and provide variable bias.
The LNA is usable down to 1.8V operation. It achieves low
noise figures and high gain even at 1.8V, making it suit-
able for use in critical low power GNSS band applications.
Component Image
Surface Mount (0.9 x 1.1 x 0.5) mm3 6-lead DFN
GnD (pin 1)
NC [1] (pin 2)
RFin (pin 3)
TOP VIEW
Vdd (pin 6)
Vsd (pin 5)
RFOut (pin 4)
Vdd (pin 6)
Vsd (pin 5)
RFOut (pin 4)
GnD
(pin 7)
GnD (pin 1)
NC [1] (pin 2)
RFin (pin 3)
BOTTOM VIEW
Note:
1. Pin 2 must be left unconnected.
2. Package marking provides orientation and identification
“K” = Product code
“X” = Month and year of manufacture
Attention: Observe precautions for han-
dling electrostatic sensitive devices.
ESD Machine Model = 70 V
ESD Human Body Model = 300 V
Refer to Avago Application Note A004R:
Electrostatic Discharge, Damage and Control.
Features
• Advanced GaAs E-pHEMT
• Low Noise Figure: 0.66dB typ.
• High Gain: 17.1dB typ.
• Low external component count
• High IIP3 and IP1dB
• Wide Supply Voltage: 1V to 3.6V
• Shutdown current : < 1uA
• CMOS compatible shutdown pin (Vsd)
• Adjustable bias current via single external resistor/
voltage
• Small Footprint: (0.9 x 1.1) mm2
• Low Profile: 0.5mm typ.
• Meets MSL1, Lead-free and halogen free
Specifications (Typical performance @ 25°C)
At 1.575GHz, Vdd = 2.7V, Idd = 6mA
• Gain = 17.1dB
• NF = 0.66dB
• IIP3 = 2.5dBm
• IP1dB = -4dBm
• S11 = -7.6dB, S22 =-17dB
Application
LNA for GNSS frequency bands
Application Circuit
Vdd = +2.7V
Vsd
C2 C3
RFin RFout
AGPS-L001 Typical Performance Curves at 25*C
10 10
88
66
44
22
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Vsd (V)
Figure 3. Idd vs Vsd for Vdd = 2.7V, R1 = 12kOhm
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Vsd (V)
Figure 4. Idd vs Vsd for Vdd = 1.8V, R1 = 0Ohm
10
9 Vdd = 2.7 V, Vsd = 2.7 V
8 Vdd = 1.8 V, Vsd = 1.8 V
7
6
5
4
3
2
1
0 0 10 20 30 40 50 60
Rbias (kOhm)
Figure 5. Idd vs R1 for Vdd = Vsd = 2.7V and Vdd = Vsd = 1.8V
6
6 Page AGPS-L001 Scattering Parameter and Measurement Reference Planes
Vdd
AGPS-L001
GnD 1
NC 2
REFERENCE
PLANE
Port 1
3
R2
6
5
4
C3
L4 Vsd
C2
L3 C1
R1
Port 2
REFERENCE
PLANE
Figure 29. Circuit used for measuring small-signal and noise parameters of packaged part. Data is deembedded to reference planes as shown.
Component values are as detailed in Figure 1.
12
12 Page | ||
Seiten | Gesamt 20 Seiten | |
PDF Download | [ AGPS-L001 Schematic.PDF ] |
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