pcd3312c NXP Semiconductors, pcd3312c Datasheet - Page 20

• Manufacturer Part Number: pcd3312c
• Description: Dtmf/modem/musical-tone Generators
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1996 Nov 21
handbook, halfpage
DTMF/modem/musical-tone generators
V TONE
Fig.20 DTMF output voltage levels as a function of
(dBm)
11
12
13
14
15
0
operating supply voltage; R
handbook, full pagewidth
handbook, full pagewidth
Fig.22 Typical frequency spectrum of a dual tone signal after flat-band amplification of 6 dB.
T amb =
(dBm)
(dBm)
level
25 ˚C
25 ˚C
70 ˚C
25 ˚C
25 ˚C
70 ˚C
level
2
100
20
40
60
80
100
0
60
80
20
40
0
0
0
HIGH GROUP
LOW GROUP
4
10
L
V DD (V)
1
= 1 M .
MGG518
6
20
2
20
handbook, halfpage
CS203
CS203
Fig.21 Dual tone output voltage level as a function
V TONE
30
(dB)
3
0.4
0.4
0.8
0
10
6
of output load resistance.
40
PCD3311C; PCD3312C
4
frequency (kHz)
10
frequency (kHz)
5
MGG521
MGG520
50
5
10
4
Product specification
T amb =
R L ( )
25 ˚C
70 ˚C
25 ˚C
MGG519
10
3