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PDF S5T3170X01-S0B0 Data sheet ( Hoja de datos )

Número de pieza S5T3170X01-S0B0
Descripción LOW POWER DTMF RECEIVER
Fabricantes Samsung semiconductor 
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No Preview Available ! S5T3170X01-S0B0 Hoja de datos, Descripción, Manual

LOW POWER DTMF RECEIVER
INTRODUCTION
The S5T3170 is a complete Dual Tone Multiple Frequency (DTMF)
receiver that is fabricated by low power CMOS and the Switched-
Capacitor Filter technology. This LSI consists of band split filters,
which separates counting section which verifies the frequency and
duration of the received tones before passing the corresponding code
to the output bus. It decodes all 16 DTMF tone pairs into a 4bits digital
code. The externally required components are minimized by on chip
provision of a differential input AMP, clock oscillator and latched three
state interface. The on chip clock generator requires only a low cost
TV crystal as an external component.
18DIP300A
20SOP375
FEATURES
• Detects all 16 standard tones.
• Low power consumption: 15mW (Typ)
• Single power supply: 5V
• Uses inexpensive 3.58MHz crystal
• Three state outputs for microprocessor interface
• Good quality and performance for using in exchange system
• Power down mode/input inhibit
ORDERING INFORMATION
Device
S5T3170X01-D0B0
S5T3170X01-S0B0
Package
18DIP300A
20SOP375
Operating
25°C — + 75°C
APPLICATIONS
• PABX
• Central Office
• Paging Systems
• Remote Control
• Credit Card Systems
• Key Phone System
• Answering Phone
• Home Automation System
• Mobile Radio
• Remote Data Entry
S5T3170
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S5T3170X01-S0B0 pdf
LOW POWER DTMF RECEIVER
S5T3170
ELECTRICAL CHARACTERISTICS (Continued)
(VDD = 5V, Ta = 25°C, unless otherwise noted)
Characteristic
Symbol
Test Conditions Min. Typ. Max.
Third Tone Tolerance
T3rd
25 16
Noise Tolerance
TN − − −12
Dial Tone Tolerance
DT
18 22
Crystal Clock Frequency
Maximum Clock Input Rise Time
Maximum Clock Input Fall Time
Acceptable Clock Input Duty Cycle
Acceptable Capacitive Load
Tone Present Detect Time
Tone Absent Detect Time
Minimum Tone Duration Accept
Minimum Tone Duration Reject
Acceptable Interdigit Pause
Rejectable Interdigit Pause
Propagation Delay Time SI to Q
Propagation Delay Time SI to DSO
Output Data Setup Q to DSO
Propagation Delay Time OE to Q
(Enable)
fCK
tR(MAX)
tF(MAX)
DCK
DL
tDET(P)
tDET(A)
tTDA(MIN)
tTDR(MAX)
tIDP(A)
tIDP(R)
tD(SI-Q)
tD(SI-D)
tSU
tD(QE-Q)EN
3.5759 3.5795 3.5831
External Clock
− − 110
External Clock
− − 110
External Clock
40 50 60
OSC2 PIN
− − 30
5 11 14
0.5 4 8.5
User Adjustable
− − 40
User Adjustable
20
User Adjustable
− − 40
User Adjustable
20
OE = High
8 11
OE = High
12 16
OE = High
3.4
RL = 10K, CL = 50pF
50 60
Propagation Delay Time OE to Q
(Disable)
tD(QE-Q)DIS RL = 10K, CL = 50pF 300
Unit
dB
dB
dB
MHz
nS
nS
%
pF
mS
mS
mS
mS
mS
mS
µS
µS
µS
nS
nS
NOTES:
1. Digit sequence consists of all 16 DTMF tones.
2. Tone duration = 40mS, Tone pause = 40mS.
3. Nominal DTMF frequencies are used.
4. Both tones in the composite signal have an equal amplitude.
5. Tone pair is deviated by ± 1.5% ± 2Hz.
6. Bandwidth limited (3KHz) Gaussian Noise.
7. The precise dial tone frequencies are (350Hz and 440Hz) ± 2%.
8. For an error rate of better than 1 in 10000.
9. Referenced to lowest level frequency component in DTMF signal.
10. Minimum signal acceptance level is measured with specified maximum frequency deviation.
11. This item also applies to a third tone injected onto the power supply.
12. Referenced to Fig. 1 Input DTMF tone level at -28dBm.
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