PBL38772/1SOA 데이터 시트보기 (PDF) - Ericsson
부품명
상세내역
일치하는 목록
PBL38772/1SOA Datasheet PDF : 24 Pages
| |||
PBL 387 72
BW 1
BW 2
BW 3
HP 4
BGND 5
RINGX 6
TIPX 7
VTBAT 8
VBAT 9
VTB 10
LP 11
SPR 12
BW 13
BW 14
28-pin SOIC
28 VTX
27 RSN
26 AGND
25 VR
24 DET
23 C1
22 C2
21 C3
20 VCC
19 PLD
18 PRT
17 PLC
16 REF
15 CRING
Figure 7. Pin configuration 28L-SOIC, top view.
Pin Description
Pin Symbol Description
1 BW
Batwing (refer to Note, Pin Description)
2 BW
Batwing (refer to Note, Pin Description)
3 BW
Batwing (refer to Note, Pin Description)
4 HP
High Pass AC/DC separation capacitor CHP connects between this pin and TIPX.
5 BGND
Battery Ground. Shall be tied together with AGND.
6 RINGX
The RINGX pin connects to the ring lead of the two-wire interface via over voltage protection components
(and optional test access switch).
7 TIPX
The TIPX pin connects to the tip lead of the two-wire interface via over voltage protection components
(and optional test access switch).
8 VTBAT
Talk Battery. The dc loop current is supplied to TIPX and RINGX from this battery voltage. Negative with respect to BGND.
9 VBAT
On-hook Ringing Battery supply voltage. Negative with respect to BGND.
10 VTB
Internal SLIC bias voltage. Connected to the talk battery supply. Refer to the application diagram in figure 8.
May be connected to any voltage between -32 and –10 V.
11 LP
Low Pass saturation guard filter capacitor CLP connects between this pin and VTBAT to filter out noise and improve PSRR.
12 SPR
Silent Polarity Reversal. The polarity reversal time can be set with a capacitor connected between this pin and AGND.
13 BW
Batwing (refer to Note, Pin Description)
14 BW
Batwing (refer to Note, Pin Description)
15 CRING
The capacitor CRING connects between this pin and AGND. Required for the ring signal generation.
16 REF
A 15 kΩ resistor connected between this pin and AGND sets an internal SLIC reference current.
The value must not be changed.
17 PLC
Programmable Line Current. The constant current DC feed is programmed by a resistor connected from this pin to AGND.
8
EN/LZT 146 136 R1A © Ericsson Microelectronics, December 2001
Share Link: 