MX829 데이터 시트보기 (PDF) - MX-COM Inc
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MX829 Datasheet PDF : 28 Pages
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Baseband Signal Processor
21
7.1.3 Operating Characteristics
For the following conditions unless otherwise specified:
Xtal Frequency = 4.032MHz, Bit Rate = 1.2k bits/sec, Noise Bandwidth = Bit Rate,
Audio Level 0dB ref. = 308mVrms at 1kHz, VDD = 5.0V, TAMB = 25°C.
DC Parameters
IDD (Tx or Rx) (VDD = 3.3V)
IDD (DTMF encode off for either Tx or Rx) (VDD = 5.0V)
IDD (DTMF encode on for either Tx or Rx) (VDD = 5.0V)
IDD (Powersaved) (VDD = 3.3V)
IDD (Powersaved) (VDD = 5.0V)
"C-BUS" Interface
Input Logic "1"
Input Logic "0"
Input Leakage Current (logic "1" or "0")
Input Capacitance
Output Logic "1" (IOH = 120µA)
Output Logic "0" (IOL = 360µA)
"Off" State Leakage Current (VOUT = VDD)
AC Parameters
Input Sensitivity (for 0dB output)
Tx Audio Input (MIC)
Rx Audio Input (DEMODFB)
Output Drive Level
For 60% Deviation
For 100% Deviation
Audio Filters
Gain at 1kHz
Passband Ripple
SINAD
Signal Path Noise
Narrow Audio Bandwidth Setting
Passband Frequencies
Stopband Attenuation
(f = 100Hz)
(f = 3400Hz)
(f = 6000Hz)
(f = 12500Hz)
Wide Audio Bandwidth Setting
Passband Frequencies
Stopband Attenuation:
(f = 100Hz)
(f = 3400Hz)
(f = 6000Hz)
(f = 25000Hz)
Notes
2
2
2
2
2
9
8
8
1, 6, 8
1, 6, 7, 8
5
5
5, 14
5
5
5
5
5
5
5
5
5
5
5
Min.
70%
-1.0
90%
291
-2.0
300
10.5
25
300
10.5
39.5
MX829 PRELIMINARY INFORMATION
Typ. Max. Units
2.7 4.0
mA
5.0 8.0
mA
9
mA
0.3 1.0
mA
0.6 1.5
mA
VDD
30%
VDD
1.0
µA
7.5
pF
VDD
10%
VDD
10
µA
308
mVRMS
308
mVRMS
308 326
1440
mVRMS
mVP-P
0
dB
0.5
dB
59
dBp
-55
dB
2550
Hz
3.0
dB
5.5
dB
24
dB
49
dB
3000
Hz
3.0
dB
3.0
dB
19
dB
68
dB
© 1998 MX•COM Inc.
www.mxcom.com Tele: 800 638-5577 336 744-5050 Fax: 336 744-5054
Doc. # 20480160.004
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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