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Número de pieza | KA2425AD | |
Descripción | SPEECH NETWORK WITH DIALER INTERFACE | |
Fabricantes | Samsung | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de KA2425AD (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
No Preview Available ! KA2425A
SPEECH NETWORK WITH DIALER INTERFACE
INTRODUCTION
The KA2425A is telephone speech network integrated
circuit which includes transmit amp, receive amp,
side tone amp, DC loop interface function, DTMF input,
voltage regulator for speech, a regulated output voltage
for a dialer, and equalization circuit .
8-DIP-300A
FEATURES
• Low voltage operation (1.5v : speech)
• Transmit, receive, side tone and DTMF level are
controlled by external resistors
• Regulated voltage for dialer
• Loop length equalization
• MUTE function
• Linear interface for DTMF
PIN CONFIGURATION
20-SOP-375
ORDERING INFORMATION
Device
Package Operating Temperature
KA2425B 18-DIP-300A
KA2425AD 20-SOP-375
- 20°C ~ + 60°C
MIC 1
18 MT
TXI 2
17 MS
TXO 3
16 TI
STA 4
15 VDD
CC 5 KA2425A 14 V+
EQ 6
13 LR
RXI 7
12 LC
RXO 8
RMT 9
11 VR
10 V-
Fig. 1
1 page KA2425A
TEST CIRCUIT
V+
SPEECH NETWORK WITH DIALER INTERFACE
14 13 12
22K
16
KA2425A
VIN
400mVrms
18
17
10
1.0V
+
20µF
204
ILOOP
Fig 2. DTMF Driver Test
V+
10K
20mVrms
1KHz
150K
8.2K
4
503
7
33K
8
2 KA2425A
6
14 15 17
150Ω
3 11
18 13
12
10
Vs
Microphone Equivalent
ILOOP
+
20µF
600Ω
203
47Ω
10
204 150Ω 503
Fig 3. Transmit and sidetone level test
150K
V+
503
8.2K
33K
4 7 8 3 11
2 KA2425A
6
12
10
14 15 17 18 13
10
20µF
20mVrms
1KHz
+
203
Vs
ILOOP
47Ω 150Ω 503
204
Fig 4. AC Impedance, Receive andSidetone Rejection Test
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet KA2425AD.PDF ] |
Número de pieza | Descripción | Fabricantes |
KA2425A | SPEECH NETWORK WITH DIALER INTERFACE | Samsung |
KA2425AD | SPEECH NETWORK WITH DIALER INTERFACE | Samsung |
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