MX165CDW Ver la hoja de datos (PDF) - MX-COM Inc
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MX165CDW Datasheet PDF : 15 Pages
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Low Voltage CTCSS Encoder/Decoder
Decoder
Pure tone decode threshold
Composite signal decode threshold
Decode input signal level
Pure tone decode response time
Pure tone decode deresponse time
Decode response time
Deresponse time
Decode selectivity:
Upper decode band edge
Lower decode band edge
Serial / Parallel Inputs
Parallel Set Up Time (tSP)
Load / Latch Pulse Width (tL)
Serial Clock Pulse Width (tC)
Serial Data Set-Up Time (tSS)
Serial Data Hold Time (tH)
Serial Enable Time (t1)
Serial Load / Latch Set-Up Time (t2)
Serial Clock Frequency
13
Notes
Min.
Typ.
Max.
MX165C
Units
19
3
16
-20
13,14
95
13,15
95
3,6,10
3,10
7
15
mVRMS
30
mVRMS
3.5
dB
115
140
ms
130
170
ms
250
ms
180
250
ms
3,11,19,20 1.005f0 1.015f0 0.995f0+1 Hz
3,11,19,20 1.005f0-1 0.985f0 0.995f0
Hz
400
400
400
400
400
400
400
1
ns
ns
ns
ns
ns
ns
ns
MHz
Operating Characteristics Notes:
1. Refers to RX/TX, PTL, Decode Comparator Input, D0-D5.
2. All logic outputs.
3. Composite signal test condition.
4. Any programming tone and RL = 10kΩ, CL = 15pF.
5. With an input level of 0dB @1kHz
6. f0>100Hz (for 100 Hz> f0>67Hz: t=100/ f0Hz x 250ms)
7. See Figure 3.
8. Measured in a 30kHz bandwidth.
9. With an input level of -3.5dB @1kHz
10. Per TIA/EIA-603.
11. Per TIA/EIA-603, device will not decode adjacent TIA/EIA-603 Tones.
12. Tone output level is proportional to VDD.
13. f0=156.7Hz @ -20dB.
14. Typically 12.5 Tone Cycles + 40ms.
15. Typically 7 Tone Cycles + 90ms.
16. Max composite signal is 3.5dB with:
Noise (band limited 6kHz Gaussian) = -12dB ref. to 1kHz test tone
f0 CTCSS tone = -20dB ref. to 1kHz test tone
17. For maximum dynamic range, set audio level to 0dB, VDD x150mVRMS, using minimum VDD under which system is
intended to work. (e.g. for a 2.7V system, use 0dB equal to 405mVRMS).
18. By characterization only.
© 1997 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 910 744-5050 Fax: 910 744-5054
Doc. # 20480102.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.
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