U4089B-P Datasheet, PDF (21/26 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit

Figure 21. DC Ramps
RGS
44 GGTT
open 1 DTMF
RDC
CB
RSAO
100K
3 MIC2
4 MIC1
6 IND
7 VL
8 GND
10
9 SENSE
RSENSE
10 VB
11 SAO
4.7U
1.65K
CMP
4.7U
13 VMP
+
20 IMPSEL
21 TSACL
U4089B-P
CRIN
RECIN 42 ^47N
CTXA
TTXA 41 ^1U
GR 40
RECO 39
RGR
CH
RH _68N
100
STI 36
RNW2
3K
VM 33
CM
100U
STO 32
IREF 31
AGA 30
TLDR 29
TLDT 28
offen
RREF
62K
RAGA
CLDR
1N
CLDT
1N
INLDR 27
2.2N
2MEG
INLDT 26
2.2N
2MEG
ATAFS 25
RATAFS
MUTX 24
SAI 23
GSA 22
+
offen
RGSA
21
4518A–CORD–05/02