MC13821FCR2 Freescale Semiconductor, MC13821FCR2 Datasheet - Page 25

• Manufacturer Part Number: MC13821FCR2
• Description: IC AMP LNA BYPASS SWITCH 12-QFN
• Manufacturer: Freescale Semiconductor

Specifications of MC13821FCR2

• Current - Supply: 2.8mA
• Frequency: 1GHz ~ 2.4GHz
• Gain: 16.5dB
• Noise Figure: 1.45dB
• P1db: -10dBm
• Package / Case: 12-QFN
• Rf Type: ISM, GPS
• Test Frequency: 1.575GHz
• Voltage - Supply: 2.75V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.4
This application circuit was designed to provide NF < 1.3 dB, S21 gain > 16 dB, OIP3 of 18 dBm with
S11 better than -10 dB and S22 better than -10 dB at 2140 MHz with unconditional stability from 100 MHz
to 10 GHz. Typical performance that can be expected from this circuit at 2.75 V V
The component values can be changed to enhance the performance of a particular parameter, but usually
at the expense of another. Two variations of the circuit are realized for different requirements for IP3 and
I
Freescale Semiconductor
R1 = 1.2 kΩ, R2 = 3.3 kΩ
Frequency
Power Gain
Output Third Order Intercept Point
Input Third Order Intercept Point
CC
High Gain
Bypass
High Gain
Bypass
High Gain
Bypass
. Values of external resistors R1 and R2 are varied to adjust I
2400 MHz Application
OUT
Vcc1
LNA
Characteristic
(Resistor values of R1 and R2 are changed for different I
2.4 nH
.01uf
C5
L2
0.6pf
Table 9. Typical 2400 MHz LNA Demo Board Performance
C2
33 pf
Vcc3
C6
Figure 13. 2400 MHz LNA Application Schematic
N
C
33 pf
.01uf
C3
C4
3.3 k
R2
MC13821 Data Sheet: Technical Data, Rev. 1.5
1
2
3
R1
2 k
Rbias
12
NC
4
Symbol
OIP3
IIP3
G
f
2400 MHz
MC13821
NC
LNA
11
5
2.7 nH
L1
Minimum
NC
10
18.5
6
5.5
—
13
15
20
-5
CC
Logic
CC
and IP3.
and IP3 requirements.)
33pF
C1
LNA IN
Typical
2400
-3.8
9
8
7
7.0
14
21
19
22
CC
Enable
Gnd
is listed in
Gain
Maximum
Application Information
22.5
7.5
—
15
20
23
-3
Table
MHz
dBm
dBm
Unit
dB
9.
25