DTMFDECODER-RD Silicon Laboratories Inc, DTMFDECODER-RD Datasheet - Page 5

• Manufacturer Part Number: DTMFDECODER-RD
• Description: KIT REF DESIGN DTMF DECODER
• Manufacturer: Silicon Laboratories Inc

Specifications of DTMFDECODER-RD

• Mfg Application Notes: DTMF Decoder Ref Design AppNote
• Main Purpose: Telecom, DTMF Decoder
• Embedded: No
• Utilized Ic / Part: C8051F300
• Primary Attributes: 8kHz Sampling Rate ADC
• Secondary Attributes: 16 Goertzel Filters
• Processor To Be Evaluated: C8051F300
• Interface Type: RS-232
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 336-1283

From
soundcard
Power_amp
P2
AUDIO CON
0u22F
C9
GND
R23
10R
J5
HED1x2
2
3
1
DTMF In
TP7
GND
3
10K
POT1
POT2
10K
R19
10R
C4
2u2F
GND
VDD2
1
R17
680R
R16
1K8
2
Figure 5. DTMF Decoder Evaluation Board (Schematic 2 of 4)
R18
10R
R6
100R
R1
2K
1000uF/16V
Soundcard signal
conditioning
C17
R11
1K2
+
5
6
R4
13K3
+
-
GND
VDD2
GND
U1B
LMV324MT
TP10
C16
0u1F
7
Vin
GND
8
5
C3
0u1F
U4
L4931CD33
IN
En
R10
470R
DTMF_Gen
OUT
C14
33uFT/25V
1
Soundcard
TP4
R7
470R
VDD3
TP9
GND
R8
470R
VDD3
Rev. 0.1
DTMF_Source
Noise_Source
DTMF Source
Selection
J4
HEADER 3X2
VDD2
1
3
5
Screw Terminal
1
2
3
4
2
4
6
J2
3
GND
VDD2
BAT54S
D1
J3
HED1x2
C5
0u68F
M1ADC0
10K
R13
GND
100R
R3
M1ADCD0
TP3
R12
10K
GND
C18
5pF
C11
2u2F
R5
100K
GND
GND
DTMF Output
Buffer
R20
51K
3
2
4
3
2
1
Speaker
Amplifier
+
-
GND
U3
TPA301
VDD2
IN-
IN+
BYPASS
SHUTDOWN
U1A
LMV324MT
1
DTMF-RD
GND
VO+
VDD
VO-
SYTRON Technologies Ltd
127, Sos. Pacurari, Iasi, Romania, 6600
Phone: [phone]
Fax: [phone]
URL:www.sytron-tech.ro
R2
470R
5
8
6
7
GND
TP6
R21
10R
GND
GND
GND
DTMF_Out
C13
1uF
2
3
1
2
3
1
AUDIO CON
N.C
P1
PA1
VDD3
LS1
SPEAKER
5