RF3140PCBA View Datasheet(PDF) - RF Micro Devices
Part Name
Description
MFG CO.
'RF3140PCBA' PDF : 16 Pages View PDF
Application Schematic
RF3140
DCS/PCS IN
50 Ω µstrip
12
1
BAND SELECT
2
TX ENABLE
3
VBATT
4
VREG
VRAMP
GSM850/GSM900 IN
5
15 kΩ**
6
50 Ω µstrip
7
8
** Used to filter noise and spurious from base band.
50 Ω µstrip
11
DCS/PCS OUT
10
50 Ω µstrip
9
GSM850/GSM900 OUT
DCS/PCS IN
BAND SELECT
TX ENABLE
VBATT
VREG
VRAMP
GSM850/GSM900 IN
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P1
1 GND P2-1
CON1
P2
1 VCC
CON1
50 Ω µstrip
6.8 pF
12
1
2
3
4
22 µF*
5
1 nF* 15 kΩ**
6
50 Ω µstrip
7
8
50 Ω µstrip
11
10
50 Ω µstrip
9
DCS/PCS OUT
GSM850/GSM900 OUT
*Not required in most applications.
** Used to filter noise and spurious from base band.
Note 1: All the PA output measurements are referenced to the PA output pad (Pin 11 and 9).
Note 2: The 50 Ω microstrip between the PA output pad and the SMA connector has an
approximate insertion loss of 0.1 dB for GSM850/EGSM900 and 0.2 dB for
DCS1800/PCS1900 bands.
Rev A6 040113
2-503
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