STLC3075_09 datasheet(28/36 Pages) STMICROELECTRONICS

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Electrical characteristics

STLC3075

28/36

6.1

Test circuits

Referring to the application diagram as shown on Figure 10: Application diagram with P-

channel and using the typical values from Table 10: External components for buckboost

configuration and Table 15: External components @gain set = 0 find below the proper

configuration for each measurement.

All measurements requiring DC current termination should be performed using ’Wandel &

Glittering’ DC Loop Holding Circuit GH-1’ or equivalent.

Figure 12.

2W return loss 2WRL = 20Log(|Zref + Zs|/|Zref-Zs|) = 20Log(E/2Vs)

PSRR and power consumption

PSERRC

Power supply rejection VPOS to

2W port

Vripple = 100 mVrms

50 to 4000 Hz

Ivpos

VPOS supply current @ II = 0

HI-Z on-hook

Active on-hook

RING (line open)

Ipk(1)

Peak current limiting accuracy

RING off-hook

RSENSE = 110 mΩ

-20%

900

+20% mApk

Buck-Boost configuration

Table 17.

Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Zref

W&G GH1

TIP

STLC3075

application circuit

600ohm

1Kohm

RING

100µF

100mA

DC mac

Zin = 100K

200 to 6kHz

100µF

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