MX641 Ver la hoja de datos (PDF) - CML Microsystems Plc
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MX641 Datasheet PDF : 17 Pages
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Dual SPM Detector
Page 15 of 16
MX641 Preliminary Information
range of the device. For this reason, the signal-to-voice figure at the AMP Output will vary with the
sensitivity setting. The lowest
signal-to-voice figure occurs at the highest sensitivity setting. (Table 4 27dB)
11. Maximum voice frequencies = 3.4kHz.
12. With the Input Amplifier gain at 0dB and the Bandpass Filter gain set at 0dB (Table 4); subtract 1.0dB
from this specification for each extra single dB of Bandpass Filter gain programmed.
Alternatively, with the input components as recommended in Figure 2, the sensitivity is as defined in
Table 4.
13. Logic inputs with no internal pull-up; Chip Select, Serial Data, Serial Clock, Output Enable, Output
Select and Clock In pins.
14. Logic inputs with an internal pull-up; Preset Level and System Select pins.
15. Preset Level = ‘0’, System Select = don't care; Chip Select, Serial Clock and Serial Data inputs active;
see Table 3.
16. Preset Level = ‘1’, System Select = input active; Chip Select, Serial Clock and Serial Data inputs
inactive;
see Table 3
17. Maximum Clock Output Fan out = 4 (including master)
6.2 Timing
Parameter
tPWH Serial Clock ‘High‘ Pulse Width
tPWL Serial Clock ‘Low’ Pulse Width
tCYC Serial Clock Period
tCSE Chip Select ‘Low’ to Clock ‘High’ Edge
tDH Data Hold Time
tDS Data Setup Time
Min.
250
250
600
450
50.0
250
Typ.
Max. Unit
ns
ns
ns
ns
ns
ns
CHIP SELECT
SERIAL CLOCK
SERIAL DATA
t CSE
t CYC
t CSH
tDS
tDH
tPWL
tPWH
BIT D5
Don't
Care
Data
BIT D4 D3
BIT D0
Figure 9: Data Load Timing for the Controlled Sensitivity Mode
ã2001 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 20480115.004
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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