U2090B
| Model | U2090B |
| Description | Monolithic Integrated Feature Phone Circuit |
| PDF file | Total 34 pages (File size: 675K) |
| Chip Manufacturer | ATMEL |
Mico
3 k
W
3 k
W
V
MP
open
RGR
10
m
F
I
M
ZEAR
41
40
39
38
37
36
35
34
33
32
31
30
29
100
m
F
10
m
F
10
m
F
62 k
W
3.3 nF
28
47 nF
36 k
W
V
L
V
M
V
M
V
M
47 nF
36 k
W
Figure 19. Basic test circuit
1
10
W
600
W
RDC
S1
22
m
F
I
L
4.7 nF
2
3
4
5
6
7
8
9
10
11
12
13
14
47
m
F
15
16
17
68 nF
18
19
680 k
W
I
MP
20
21
1
m
F
22
Preliminary Information
U4090B
68 nF
10
m
F
47
m
F 1000
m
F
50
W
BC556
I
DC
220
m
F
2.2 mH
SD103A
RGT
1 k
W
VM
S2
open
V
Ring
DC
V
MP
U4090B
reference figure for not connected pins
S1 = closed: speech mode
S2 = closed: ringer mode
94 9132
TELEFUNKEN Semiconductors
Rev. C1, 28-Oct-96
V
MP
open
3.3 nF
27
26
2 M
W
RGSA
25
24
23
220 nF
150 nF
1
m
F
44
43
42
25 (34)
