MX465 查看數據表（PDF） - CML Microcircuits
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MX465 Datasheet PDF : 17 Pages
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Low Voltage CTCSS Encoder/Decoder
13
Encoder
Tone output level
Tone Frequency Accuracy (f error)
Risetime to 90% nominal output
f0>100Hz
f0<100Hz
Total Harmonic Distortion
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
Notes
12
4,10
4,10
19
19
3
16
13,14
13,15
3,6,10
3,10
3,11,19,20
3,11,19,20
Min.
- 1.0
- 0.3
-20
95
95
1.005f0
1.005f0-1
400
400
400
400
400
400
400
Typ.
Max.
MX465
Units
0
1.0
dB
0.3
%f0
15
75
ms
45
120
ms
1.5
2
%
7
15
mVRMS
30
mVRMS
3.5
dB
115
140
ms
130
170
ms
250
ms
180
250
ms
1.015f0 0.995f0+1 Hz
0.985f0 0.995f0
Hz
ns
ns
ns
ns
ns
ns
ns
1
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 = 10k, 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.
©1998 MX•COM, INC.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. #20480143.008
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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