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參數資料
型號: UBA2051AT
廠商: NXP SEMICONDUCTORS
元件分類: 無繩電話/電話
英文描述: One-chip telephone ICs with speech, dialler and ringer functions
中文描述: TELEPHONE MULTIFUNCTION CKT, PDSO28
封裝: PLASTIC, SOT-136, SO-28
文件頁數: 11/52頁
文件大?。?/td> 292K
代理商: UBA2051AT
2000 May 19
11
Philips Semiconductors
Product specification
One-chip telephone ICs with speech,
dialler and ringer functions
UBA2050(A); UBA2051(A;C)
handbook, full pagewidth
FCA131
Iline
Rline
VCC
GND
LN
VDD
CVDD
220
μ
F
UBA205xx
RCC
ICC
IDD
ILN
peripherals
SENSE
SWITCH
VDD regulator
ISUP
Rexch
Vexch
CVCC
100
μ
F
Fig.10 V
DD
regulator configuration.
S
ET IMPEDANCE
In the audio frequency range, the dynamic impedance is
mainly determined by resistor R
CC
. The equivalent
impedance of the circuit is illustrated in Fig.11.
handbook, halfpage
LN
GND
SLPE
RSLPE
20
CREG
4.7
μ
F
REG
VCC
RCC
619
CVCC
100
μ
F
RP
Vref
LEQ
FCA132
Fig.11 Equivalent impedance between
LN and GND.
L
EQ
= C
REG
×
R
SLPE
×
R
p
.
Internal resistance R
P
= 17.5 k
.
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