UBA1707T/C1 Просмотр технического описания (PDF) - Philips Electronics

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UBA1707T/C1

Cordless telephone, answering machine line interface

Philips Electronics 

Philips Semiconductors

Cordless telephone, answering machine

line interface

Product specification

UBA1707

140

handbook, full pagewidth

ILN

(mA)

120

no power delivered to the loudspeaker

MGK715

100

(4)

(3)

(2)

(1)

80

∆ Vref

60

40

with power delivered to the loudspeaker

20

2

3

4

5

6

7

8

9

10

11

12

VLN − VSLPE (V)

The line current value can be calculated from ILN value as follows:

Iline = I--L---N-----×-----(---R-----S---E---T----+-----R---R-S---L-S--P-E--E-T--)----+-----V-----L--N-----–----V----S---L---P---E-- where RSET is the resistive part of ZSET.

LINE

(1)

(2)

(3)

(4)

Tamb (°C)

45

55

65

75

Ptot (mW)

666

583

500

416

When power is delivered to a loudspeaker with RL impedance, the curves must be shifted to the left by:

∆Vref = -2----×-----π----2-V---×-C---R-C---2-L----×-----I--L--N-- with maximum power dissipated by the loudspeaker amplifier (dotted line given for VCC = 5.5 V, RL = 16 Ω).

Fig.15 Safe operating area (UBA1707TS).

1999 Feb 17

20

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