STLC3075(2005) Ver la hoja de datos (PDF) - STMicroelectronics

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STLC3075
(Rev.:2005)

INTEGRATED POTS INTERFACE FOR HOME ACCESS GATEWAY AND WLL

STMicroelectronics 

STLC3075

Table 3. Operating Range

Symbol

Parameter

Value

Vpos

Positive Supply Voltage

4.5 to +12

A/BGND AGND to BGND

-100 to +100

Vdig

Pin D0, D1, D2, DET, CKTTX, PD

-0.25 to 5.25

Top

Ambient Operating Temperature Range

-40 to +85

Vbat (1) Self Generated Battery Voltage

-74 max.

(1) Vbat is self generated by the on chip DC/DC converter and can be programmed via RF1 and RF2.

RF1 and RF2 shall be selected in order to fulfil the a.m limits (see External Components Table page 10)

Table 4. Thermal Data

Symbol

Rth j-amb

Parameter

Thermal Resistance Junction to Ambient

Value

Typ.

60

Unit

V

mV

V

°C

V

Unit

°C/W

Table 5. Pin Description

N°

1

2

3

4

5

6,22,38,

39,40,42

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

Pin

D0

D1

D2

PD

Gain

SET

NC

DET

CKTTX

CTTX1

CTTX2

RTTX

FTTX

RX

ZAC1

ZAC

RS

ZB

CAC

TX

CZ

VF

Function

Control Interface: input bit 0.

Control Interface: input bit 1.

Control interface: input bit 2.

Power Down input. Normally connected to CVCC (or to logic level high).

Control gain interface: 0 Level Rxgain = 0dB Txgain = -6dB

1 Level Rxgain = +6dB Txgain = -12dB

Not connected.

Logic interface output of the supervision detector (active low).

Metering pulse clock input (12 KHz or 16KHz square wave).

Metering burst shaping external capacitor.

Metering burst shaping external capacitor.

Metering pulse cancellation buffer output. TTX filter network should be connected to this point.

If not used should be left open.

Metering pulse buffer input this signal is sent to the line and used to perform TTX filtering.

4 wire input port (RX input); 300KΩ input impedance. This signal is referred to AGND.

If connected to single supply CODEC output it must be DC decoupled with proper capacitor.

RX buffer output (the AC impedance is connected from this node to ZAC).

AC impedance synthesis.

Protection resistors image (the image resistor is connected from this node to ZAC).

Balance Network for 2 to 4 wire conversion (the balance impedance ZB is connected from this

node to AGND. ZA impedance is connected from this node to ZAC1).

AC feedback input, AC/DC split capacitor (CAC).

4 wire output port (TX output). The signal is referred to AGND. If connected to single supply

CODEC input it must be DC decoupled with proper capacitor.

Fly-Back compensation

Feedback input for DC/DC converter controller.

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