TS615IPWT datasheet(28/36 Pages) STMICROELECTRONICS

部件名	TS615IPWT

功能描述	DUAL WIDE BAND OPERATIONAL AMPLIFIER WITH HIGH OUTPUT CURRENT

PDF	36 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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28 / 36 page

TS615

Power Down Mode Behavior

28/36

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.

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

Figure 66. Equivalent schematic

Vcc -

Vcc +

Ouput 1

Rpdw

Vcc +

Vcc -

Ouput 2

Rpdw

-Vcc

POWER

DOWN

pin6

-Vcc

POWER

DOWN

pin6

TS615IPWT 数据表(PDF) 28 Page - STMicroelectronics