TS615IPWT(2004) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS615IPWT
(Rev.:2004)

Dual Wide-Band Operational Amplifier with High Output Current

STMicroelectronics 

TS615

Power Down Mode Behavior

9 Power Down Mode Behavior

Please note that the short-circuited output in power-down mode is referenced to (-VCC). No problems

appear when used in differential mode. Nevertheless, when used in single-ended mode on a load

referenced to GND, the (-VCC) level contributes to a current consumption through the load.

Figure 66. Equivalent schematic

Vcc +

..3

4+

A1

5_

1

Vcc -

Vcc -

14

11 +

..A2

10 _

12

Vcc +

POWER

DOWN

pin6

... 2 Ouput 1

Rpdw

-Vcc

-Vcc

.. .Rpdw

13 Ouput 2

POWER

DOWN

pin6

As shown in Figure 66, the interest of having an output short-circuit in power-down mode is to keep the

best impedance matching between the system and the twisted pair telephone line when the modem is in

sleep mode. By doing this, the modem can be woken up with a signal from the line without any damage

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