E-STLC3055N View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

E-STLC3055N

WLL and ISDN-TA subscriber line interface circuit

STMicroelectronics 

STLC3055N

STLC3055Q vs STLC3055N compatibility.

9

STLC3055Q vs STLC3055N compatibility.

STLC3055N is pin to pin compatible with the old STLC3055Q but offer a better performance

in term of power consumption and can be set in a new gain configuration in order to be

compatible with the 3.3 V codec.

9.1

Typical power consumption comparison

Table 14. Power consumption differences

Operative mode

STLC3055Q

STLC3055N

HI-Z

Active on hook

Ring (no REN)

52 - 60 mA

93 - 115 mA

120 - 140 mA

13 - 25 mA

50 - 80 mA

55 - 90 mA

To meet this result some differences, with a minimum impact on the application, has been

introduced in STLC3055N.

9.2

Hardware differences

● RX input. In STLC3055N it is necessary a 100 kΩ external resistor between RX input

and AGND to bias the input stage.

● Rp. The STLC3055N required a Rp value of 50 Ω instead of 41 Ω.

● TTX filter. To optimize the ttx signal dynamic, the values of RLV and CFL have been

changed;

Table 15. Hardware differences

Component

RRX

Rp

RLV

CFL

STLC3055Q

41 Ω

27 kΩ

1 nF

STLC3055N

100 kΩ

50 Ω

16.2 kΩ

1.5 nF

9.3

Parameter differences

Table 16. Parameter differences

Parameter

Absolute max. rating

Operating range

Typ. metering pulse level (Gs 1)

Typ. metering pulse level (Gs 0)

STLC3055Q

17 V

15.8 V

200 mVrms

STLC3055N

13 V

12 V

340 mVrms

170 mVrms

31/34

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