TLE4925 Infineon Technologies, TLE4925 Datasheet - Page 3

• Manufacturer Part Number: TLE4925
• Description: IC HALL EFFECT SENSOR SSO-3-6
• Manufacturer: Infineon Technologies
• Type: Special Purposer

Specifications of TLE4925

• Sensing Range: 45% ~ 55%
• Voltage - Supply: 3.3 V ~ 18 V
• Current - Supply: 9mA
• Current - Output (max): 20mA
• Output Type: Digital, Open Drain
• Features: High Sensitivity
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 3-SIP, SSO-3-06
• Operating Supply Voltage: 5 V or 9 V or 12 V
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 195 C
• Minimum Operating Temperature: - 40 C
• Maximum Output Current: 50 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SP000013753; SP000269338; TLE4925; TLE4925INTB; TLE4925X

V
Figure 2: Block Diagram of TLE4925/TLE4925C
Circuit Description
The TLE4925/TLE4925C is comprised of a supply voltage regulator, a pair of hall
probes, spaced at 2.5mm, differential amplifier, noise-shaping filter, comparator,
advanced digital signal processor (DSP), A/D and D/A converter and an open
drain output.
Startup mode:
The differential signal is digitized in the A/D converter and fed into the dsp part of
the circuit. There a rising or falling transition is detected and the output stage is
triggered accordingly. As the signal is not offset compensated at this time, the
output does not necessarily switch at zero-crossing of the magnetic signal. Signal
peaks are also detected in the digital circuit and their arithmetic mean value can
be calculated. The offset of this mean value is determined and fed into the offset
cancellation DAC. This procedure can be repeated with increasing accuracy.
After few increments the IC is switched into the high accuracy running mode.
Data Sheet
S
Hall probes
& technology compensation
bias for temperature
power supply regulator
analog
supply
clamping & reverse voltage
+
amplifier
-
+
-
protection
digital
supply
+
Offset
DAC
-
actual switching
filter
oscillator
level
main
comp
hyst
comp
Page 3 of 28
Tracking ADC
GND
enable
overtemperature
& short-circuit
protection
reset
min
max
algorithm
digital
interface
clamping
Q
10/02/2005
n-channel
open drain