U4089B-P_05 Datasheet, PDF (20/26 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit

Figure 8-9.
DC Voltage Current Test
RGS _{U7 44 GGTT}
open 1 DTMF
RDC
+
CB
3 MIC2
4 MIC1
6 IND
7 VL
S1
8 GND
10
9 SENSE
RSENSE
10 VB
RSAO
100K
11 SAO
RVMP
1.65K
CMP
4.7U
13 VMP
+
20 U4089B-P
20 IMPSEL
21 TSACL
CRIN
RECIN 42 ^47N
CTXA
TTXA 41 ^1U
+
GR 40
RGR
RECO 39
CH
RH _68N
100
STI 36
RNW2
3K
VM 33
CM
100U
STO 32
ISTO
+
IREF 31
RREF
62K
AGA 30
RAGA
CLDR
+
TLDR 29
1N
CLDT
TLDT 28
1N
INLDR 27
2.2N
2MEG
INLDT 26
2.2N
2MEG
ATAFS 25
RATAFS
MUTX 24
SAI 23
GSA 22
+
open
RGSA
4518C–CORD–10/05