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Part: KMI20/1
Category:
Description: KMI20/1; Rotational Speed Sensor For Extended AIR Gap Application
Company: Philips Semiconductors
Datasheet: Download KMI20/1 datasheet File size : 42 kB
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DISCRETE SEMICONDUCTORS
DATA SHEET
handbook, halfpage
M3D282
KMI20/1 Rotational speed sensor for extended air gap application
Objective specification 2000 Sep 04
Philips Semiconductors
Objective specification
Rotational speed sensor for extended air gap application
FEATURES · Digital current output signal · Digital offset compensation · Extended air gap · Zero speed capability · Wide temperature range · High tolerance to vibration · EMC resistant · Tolerant to positioning. DESCRIPTION The KMI20/1 is a sensitive rotational speed sensor for the application with ferrous gear wheels(1). The sensor consists of a magnetoresistive sensor element, a driver IC in BIMOS technology, a digital signal conditioning IC in a highly integrated CMOS technology and a magnetized ferrite magnet. The frequency of the digital current output signal is proportional to the rotational speed of a gear wheel. CAUTION Do not press two or more products together against their magnetic forces.
(1) The sensor contains customized integrated circuits. Usage in hydraulic brake systems and in systems with active brake control is forbidden. For all other applications, higher temperature versions of up to 150 °C are available on request.
1 2
MBH781
KMI20/1
PINNING PIN 1 2 VCC V- DESCRIPTION
handbook, halfpage
Fig.1 Simplified outline (SOT453B).
QUICK REFERENCE DATA SYMBOL VCC ICC (low) ICC (high) d ft Tamb PARAMETER DC supply voltage between leads 1 and 2 current output signal low current output signal high sensing distance operating tooth frequency ambient operating temperature 0 5.6 11.2 0 to 4 0 -40 MIN. 7 14 0 to 4.5 - - TYP. 12 MAX. 18 8.4 16.8 - 2 500 +85 V mA mA mm Hz °C UNIT
2000 Sep 04
2
Philips Semiconductors
Objective specification
Rotational speed sensor for extended air gap application
LIMITING VALUES In accordance with Absolute Maximum Rating System (IEC 60134). SYMBOL VCC Tstg Tamb Tsld PARAMETER DC supply voltage storage temperature operating ambient temperature soldering temperature output short-circuit duration wrong polarity Note t < 10 s VCC to GND (see Fig.7) Tamb = -40 to +65 °C; RL = 115 ; note 1 CONDITIONS Tamb = -40 to +85 °C; RL = 115 0 -65 -40 - MIN.
KMI20/1
MAX. 18 +150 +85 +260
UNIT V °C °C °C
continuous continuous
1. With RL = 115 the device is continuously protected against wrong polarity of the DC supply voltage (VCC) to GND (see Fig 7). CHARACTERISTICS Tamb = 25 °C; VCC = 12 V; d = 2.1 mm; ft = 2 kHz; test circuit: see Fig.7; RL = 115 ; central sensor positioning: see Fig.9; gear wheel: module 2 mm; material 95MnPb28k; unless otherwise specified. SYMBOL ICC (low) ICC (high) tr tf ft din 0 Hz din 1 Hz dact in 0 Hz in 1 Hz act PARAMETER current output low current output high output signal rise time output signal fall time operating tooth frequency sensing distance in initial mode for signals 0 Hz 1 Hz duty cycle in initial mode for signals >0 Hz duty cycle in initial mode for signals >1 Hz duty cycle in active mode CONDITIONS -40 to +85 °C; see Figs 7 and 9 -40 to +85 °C; see Figs 7 and 9 CL = 100 pF; see Fig.11; 10% to 90% value CL = 100 pF; see Fig.11; 90% to 10% value for both rotational directions see Fig.9 see Fig.9 MIN. 5.6 11.2 - - 0 0 to 2.5 0 to 3.5 0 to 4.0 20 20 40 7 14 0.5 0.5 - 0 to 2.9 0 to 3.9 0 to 4.5 50 50 50 TYP. MAX. 8.4 16.8 - - 2 500 - - - 80 80 60 UNIT mA mA µs µs Hz mm mm mm % % %
sensing distance in active mode see Fig.9 see Fig.5 see Fig.5 see Fig.5
2000 Sep 04
3
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