參數(shù)資料
型號： 935263881118
廠商： NXP SEMICONDUCTORS
元件分類： 通信及網(wǎng)絡(luò)
英文描述： SPECIALTY TELECOM CIRCUIT, PDSO28
封裝： PLASTIC, SOT-341, SSOP-28
文件頁數(shù)： 11/38頁
文件大?。?/td> 287K
代理商： 935263881118
1999 Feb 17
19
Philips Semiconductors
Product specication
Cordless telephone, answering machine
line interface
UBA1707
Fig.14 Safe operating area (UBA1707T).
LINE
Tamb (°C)
Ptot (mW)
(1)
45
1000
(2)
55
875
(3)
65
750
(4)
75
625
When power is delivered to a loudspeaker with RL impedance, the curves must be shifted to the left by:
with maximum power dissipated by the loudspeaker amplifier (dotted line given for VCC = 5.5 V, RL =16 ).
V
ref
V
CC
2
π
2
R
L
I
LN
×
------------------------------------------
=
The line current value can be calculated from ILN value as follows:
where RSET is the resistive part of ZSET.
I
line
I
LN
R
SET
R
SLPE
+
() V
LN
V
SLPE
–
+
×
R
SET
----------------------------------------------------------------------------------------------
=
handbook, full pagewidth
12
150
30
23456
89
10
11
MGK714
7
50
70
90
110
130
VLN VSLPE (V)
ILN
(mA)
(1)
(2)
(3)
(4)
no power delivered to the loudspeaker
with power delivered to the loudspeaker
Vref
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