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PCF5078T Schematic ( PDF Datasheet ) - NXP Semiconductors

Teilenummer PCF5078T
Beschreibung Power amplifier controller for GSM and PCN systems
Hersteller NXP Semiconductors
Logo NXP Semiconductors Logo 




Gesamt 20 Seiten
PCF5078T Datasheet, Funktion
INTEGRATED CIRCUITS
DATA SHEET
PCF5078
Power amplifier controller for GSM
and PCN systems
Product specification
File under Integrated Circuits, IC17
1999 Apr 12






PCF5078T Datasheet, Funktion
Philips Semiconductors
Power amplifier controller for GSM and
PCN systems
Product specification
PCF5078
handbook, full pagewidth
RFout 0
(dBc)
10
20
30
40
50
60
70
80
VVDAC
< 0.9VDD
28 18 10 0
CODESTART
VVC
< 0.9VDD
0 2 4 6 8 10 12 14 16
+543 +553 +561 +571
time (µs)
CODEEND
16 18 20 22 24 26 28 30 32 DAC bits at 560 kHz
Vprebias
VDD
0 2 4 6 8 10 12 14 16
RFin
>45 µs
16 18 20 22 24 26 28 30 32 DAC bits at 560 kHz
>15 µs
time
time
MGS197
1999 Apr 12
Fig.3 Timing diagram.
6

6 Page









PCF5078T pdf, datenblatt
Philips Semiconductors
Power amplifier controller for GSM and
PCN systems
Product specification
PCF5078
andbook, halfpage
Vhome
VOLTAGE
GENERATION
R3
50 k
7 VHOME
PCF5078
VVHOME
C(1)
R(2)
MGS204
andbook, halfpage
VDD
Vhome
VOLTAGE
GENERATION
R3
50 k
7 VHOME
PCF5078
MGS203
R(2)
VVHOME
C(1)
(1) C = 22 to 82 pF.
(2) R = V-----h---o--m--V--e--V---H----OV----MV----HE---O----M----E-- × R3
Fig.10 Suggested method to force externally
VVHOME < Vhome.
(1) C = 22 to 82 pF.
(2) R = -V--V--V--D-H---D-O---M-----EV----V----H-V--O--h--M-o--m-E----e- × R3
Fig.11 Suggested method to force externally
VVHOME > Vhome.
handbook, halfpage
VC
1
PCF5078
700
120 pF
MGS202
Fig.12 Typical output load on pin VC.
1999 Apr 12
12

12 Page





SeitenGesamt 20 Seiten
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