MAX9925(2018) Просмотр технического описания (PDF) - Maxim Integrated
Номер в каталоге
Компоненты Описание
производитель
MAX9925
(Rev.:2018)
(Rev.:2018)
Maxim Integrated
MAX9925 Datasheet PDF : 23 Pages
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MAX9924–MAX9927
Variable Reluctance Sensor Interfaces with
Differential Input and Adaptive Peak Threshold
Electrical Characteristics (continued)
(VCC = 5V, VGND = 0V, MAX9925/MAX9927 gain setting = 1V/V, Mode A1, VBIAS = 2.5V, VPULLUP = 5V, RPULLUP = 1kΩ, CCOUT =
50pF. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
INPUT DIFFERENTIAL AMPLIFIER (MAX9924/MAX9926)
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
IN+, IN-
Guaranteed by CMRR
-0.3
VCC +
0.3
V
Differential Amplifier
Common-Mode Rejection Ratio
Input Resistance
ADAPTIVE PEAK DETECTION
CMRR
RIN
MAX9924 (Note 5)
MAX9926 (Note 5)
(Note 5)
60
87
dB
55
78
65
100
135
kΩ
Zero-Crossing Threshold
Mode B
MAX9924/MAX9925 -6.5
0
+6.5
VZERO_THRESH operation
mV
(Notes 5, 6) MAX9926/MAX9927 -6.5
0
+10
VADAPTIVE Adaptive peak threshold
33
%PK
Minimum threshold of hysteresis
comparator MAX9924/MAX9926
(Notes 5, 6)
4
15
30
Fixed and Adaptive Peak
Threshold
VMIN-THRESH
Minimum threshold of hysteresis
comparator MAX9925/MAX9927
(Notes 5, 6)
VMIN-THRESH - VZERO-THRESH for
MAX9924 (Notes 5, 6)
VMIN-THRESH - VZERO-THRESH for
MAX9926 (Notes 5, 6)
VMIN-THRESH - VZERO-THRESH for
MAX9925/MAX9927 (Notes 5, 6)
20
30
50
mV
7
15
26
2
15
30
19
30
50
Watchdog Timeout for Adaptive
Peak Threshold
Timing window to reset the adaptive
tWD
peak threshold if not triggered (input
45
85
140
ms
level below threshold)
ENTIRE SYSTEM
Comparator Output Low Voltage
Propagation Delay
VCOUT_OL
tPDZ
tPDA
Overdrive = 2V to 3V, zero-crossing
path
Overdrive = 2V to 3V, adaptive peak
path
0.2
V
50
ns
150
COUT Transition Time
tHL-LH
2
ns
Includes noise of differential amplifier
Propagation Delay Jitter
tPD-JITTER
and comparator, f = 10kHz,
VIN = 1VP-P sine wave
20
ns
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