Data Sheet
May 2001
L8576B Dual Ringing SLIC
Description (continued)
VBAT
VCC VBAT
CVBATa
0.1 µF
100 V
RPWRa
RDCT*
300 kΩ
CVCC
2.2 kΩ
5%,
RGX3a
10 kΩ
RGX1a
RGX2a
7.5 kΩ
0.1 µF
16.9 kΩ
10 V
TO DTMF
RECEIVER
2 W
CTG1a
470 pF
10 V
CBa
0.33 µF
10 V
RXa
154 kΩ
CF1a, 0.22 µF, 100 V
10% POLYESTER
40 38 41
24
1
37
32 TG1
33 TG2
GAIN = 125 V/A
43
44
CC1A
0.1 µF
10 V
19 GSX1
RT2a
+
40.2 kΩ
VFXIN1
34
VDD
DX
AX
6
ac
–
–
+
20
1/2 L8576
SLIC
CF2a, 0.22 µF, 100 V
10% POLYESTER
CONDITIONER
VITRa
DX
11
DR
12
RT1a
41.2 kΩ
RHBa
309 kΩ
+2.4 V
RECTIFIER
27
RRCVa
143 kΩ
RCVPa
DR
RPT1a
30
VFRO1
+
A = 6
TIP
RCVNa
MCLK
9
FSX1
13
17
PTa
36
–
MCLK
FS0
CC2a
33 nF
10 V
X1
26
VCC
8
7
6
5
1
2
3
4
RGNa
27.4 kΩ
CH 0
FGND
RING
L7591
VBAT
RGa
27.4 kΩ
FSR1
14
PRa
35
1/2 T8503
CODEC
LCTHa
RRNG
28.7 kΩ
+
–
–X1
23
GNDA1 18
10 DGND
RPR1a
30
RRNG
NSTATa
39
VCCa
+
–
DCOUTa 29
75 µA
(130 µA
RINGING)
VDD
VCC
RPROGa
51.1 kΩ
NSTATa
AGND
+5 V
IPROGa 28
CPROGa
0.056 µF
50 V
30 RTTHa
31 RTFLTa
25 42
BGNDa
AGNDa
VBAT
–65 V
GND
CRTa
0.1 µF
50 V
RDCR*
300 kΩ
RTTHa
52.3 kΩ
RTFLTa
383 kΩ
BGND
DGND
FGND
VBAT
5-8414a (F)
* RDCT and RDCR (optional) are only required to keep the NSTAT output at a steady state during the disconnect state.
Notes:
TX = –2 dB.
RX = –4 dB.
Termination = 600 Ω.
Hybrid balance = 600 Ω.
Ring trip optimized for 20 Hz.
Figure 2. Typical 600 Ω Application Circuit (Only One Channel Shown)
4
Agere Systems Inc.
AGERE [ AGERE SYSTEMS ]
