參數(shù)資料
型號： 935185240518
廠商： NXP SEMICONDUCTORS
元件分類： 通信及網(wǎng)絡
英文描述： SPECIALTY TELECOM CIRCUIT, PDSO20
封裝： PLASTIC, SOT-266, SSOP-20
文件頁數(shù)： 30/30頁
文件大?。?/td> 251K
代理商： 935185240518
1997 Feb 27
9
Philips Semiconductors
Product specication
Power amplier controller for GSM and
PCN systems
PCF5075
Fig.3 Timing of a typical ramp-up/ramp-down curve.
(1) tRFON =tON 12Tcy to tON +2Tcy.
(2) tRFOFF = 44Tcy to 66Tcy.
(3) VSR 2Vd1 +VKICK (start integrator).
(4) VSR 2Vd1 +VPL.
(5) VSR 2Vd1 Vqrs.
(6) (VSR 2Vd1 +VKICK +VHOMEIN)/3.
(7) This timing to the RF input power of the power module ensures that the
70 dB margin is met, even if the isolation of the power module is bad.
handbook, full pagewidth
AS
BS
CS
DS
ES
FS
GS
HS
4
1
6
30
70
22Tcy
18Tcy
22Tcy
t1
t2
(2Tcy)
(8Tcy)
dB
18Tcy
38Tcy
2Tcy
B
C
E
G
TON 400 s
TOFF 44Tcy
TRIG
PD
KICKA
HPA
QRSA
DACA
RFIN
VINT(p)
(1)
(3)
(4)
(5)
(6)
(7)
(2)
(OP4)
MBE725
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