Philips Semiconductors
Rotational speed sensor
Product specification
KMI15/4
LIMITING VALUES
In accordance with Absolute Maximum Rating System (IEC 60134).
SYMBOL
PARAMETER
VCC
Tstg
Tamb
Tsld
DC supply voltage
storage temperature
operating ambient temperature
soldering temperature
output short-circuit duration to GND
CONDITIONS
Tamb = −40 to +85 °C; RL = 115 Ω
t ≤ 10 s
MIN. MAX.
−0.5
+16
−40
+150
−40
+85
−
260
continuous
UNIT
V
°C
°C
°C
CHARACTERISTICS
Tamb = 25 °C; VCC = 12 V; d = 1.5 mm; ft = 2 kHz; test circuit: see Fig.7; RL = 115 Ω; sensor positioning: see Fig.15;
gear wheel: module 2 mm; material 1.0715; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
ICC (low)
ICC (high)
tr
current output signal low
current output signal high
output signal rise time
see Figs 6 and 8
see Figs 6 and 8
CL = 100 pF; see Fig.9;
10 to 90% value
tf
output signal fall time
CL = 100 pF; see Fig.9;
10 to 90% value
td
switching delay time
between stimulation pulse (generated by
a coil) and output signal
ft
operating tooth frequency for both rotation directions
d
sensing distance
see Fig.15 and note 1
δ
duty cycle
see Fig.6
MIN.
5.6
11.2
−
TYP.
7
14
0.5
MAX.
8.4
16.8
−
−
0.7
−
−
1
−
0
−
25 000
0 to 2.0 0 to 2.3 −
20
50
80
UNIT
mA
mA
µs
µs
µs
Hz
mm
%
Note
1. High rotational speeds of wheels reduce the sensing distance due to eddy current effects (see Fig.17).
2000 Sep 05
3