ALM-2506-TR1G Avago Technologies US Inc., ALM-2506-TR1G Datasheet - Page 4

• Manufacturer Part Number: ALM-2506-TR1G
• Description: Margosa Halogen Free
• Manufacturer: Avago Technologies US Inc.

Specifications of ALM-2506-TR1G

• Current - Supply: 8mA
• Frequency: 900MHz ~ 2.4GHz
• Gain: 14.3dB
• Noise Figure: 0.8dB
• P1db: 1.8dBm
• Package / Case: 12-PowerVQFN, 12-MCOB
• Rf Type: GPS
• Test Frequency: 1575.42MHz
• Voltage - Supply: 1 V ~ 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 4. Demoboard and Application Circuit Components
VSD
Figure 5. Demoboard schematic
4
RF_IN
RF IN
GPS LNA
H 0.010
W 0.0220
e 3.48
C
C4
C=6.8 pF
R
R1
R=18 kOhm
L
L1
L=5.6 nH
Johanson 0402
5.6nH
Johanson 0402
L
L2
L=10 nH
0.1PF
10nH
12: / / 33nH
C
C1
C
C3
C=0.1 uF
4.7nH
6.8pF
BIAS
C
C5
C=6.8 pF
MAR 2005 TL.
Avago
Technologies
Amplifier2
AMP1
18k
6.8pF
100pF
+VDD
Toko LL1005
L
L3
L=4.7 nH
R=
Johanson 0402
PRL
PRL1
R=12 Ohm
L=33 nH
C
C2
RF OUT
RF_OUT
Notes
x L1 and L2 form the input matching network.
x L3 is an output matching inductor.
x C5 is a RF bypass capacitor.
x PRL1 is a network that isolates the measurement
x Bias control is achieved by either varying
x Higher gain and IP3 performance can be
x For low voltage operation such as 1.5V or 1.0V,
The LNA module has a integrated coupling
and DC-blocking capacitors at the input and
output. Best noise performance is obtained
using high-Q wirewound inductors. This
circuit demonstrates that low noise figures are
obtainable with standard 0402 chip inductors.
Replacing L1, L2 and L3 with high-Q wirewound
inductors (eg. Cilcraft 0402CS series) will yield
0.1dB lower NF and 0.6dB higher Gain.
demoboard from external disturbances. C3 and
C4 mitigates the effect of external noise pickup
on the VSD and VDD lines. These components
are not required in actual operation.
the VSD voltage without R1 or fixing the VSD
voltage to VDD and varying R1. Typical value
for R1 is 18k Ohm for 8mA total current at
VDD=+2.85V.
obtained by increasing the supply current. This
can be achieved by reducing the value for R1 to
obtain desired current.
the R1 may be omitted and VSD connected
directly to the supply pins.