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Home> Products > PCB level Position Sensors (Miniature Plastic package) > SS491
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SS491B
SS491 Series Miniature Ratiom etric
Linear Hall-
Effect Sensor; radial lead IC
package
Actual product appearance may vary.
Features
Single current sinking or current
sourcing linear output
Built-in thin-film resistors -
for precise sensitivity and temperature
compensation
Rail-to-rail operation provides more
useable signal for higher accuracy
Responds to either positive or negative
gauss
Quad Hall sensing element for stable
output)
Potential Applications
Weight sensing
Description
SS491 Series MRL (Miniature Ratiometric Linear) sensors have a ratiometric output
voltage, set by the supply voltage. It varies in proportion to the strength of the
magnetic field.
A new Hall effect integrated circuit chip provides increased sensitivity. The quad
Hall sensing element minimizes the effects of mechanical or thermal stress on the
output. The positive temperature coefficient of the sensitivity helps compensate for
the negative temperature coefficients of low cost magnets, providing a robust
design over a w ide temperature range.
NOTE: Products ordered in bulk packaging (plastic bags) may not have perfectly
straight leads as a result of normal handling and shipping operations. Please order
tape packaging option for applications w ith critical lead straightness requirements.
Supporting Docum entation
Required
Accessories—
Product Specifications
Product Type Hall-Effe ct Digita l Position Sensor
IC
Pa ckage Quantity/Type Ava ilable in 1,000/Ba g
Pa ckage Style Radial Le a d IC
Supply Volta ge 4.5 Vdc to 10.5 Vdc
Output Type Sink/Source
Termination Type PC Board
Ma gnetic Actuation Type Ratiom etric
Ope rating Tem perature Range -40 °C to 150 °C [-40 °F to 302 °
F]
Storage Te mpe ra ture -55 °C to 165 °C [-67 °F to 329 °
F]
Output Voltage 0.2 Vdc to (V<sub>s</sub> - 0.2
Vdc) typ., 0.4 Vdc to
(V<sub>s</sub> - 0.4 Vdc) m in.
Linearity (% o f Span) -1.0 % typ.
Output Voltage Span (min.) 0.4 Vdc to (Vs - 0.4 Vdc)
Ava ilability Global
Supply Curre nt (m ax . @ 25 °C) 8.7 m A @ 5 Vdc
Se nsitivity @ 25 °C 0.60 m V to 1.25 m V/G
Tem perature_Error_25_Null_Shift_2 -0.06 m in., 0.08 m ax .
Tem perature_Error_25
Se nsitivity_1
-0.02 m in., 0.08 m ax .
Ma gnetic Range (typ.) -6 m T to 6 m T [-60G to 60 G]
Ma gnetic Range (m in.) -5 m T to 5 m T [-50G to 50 G]
Output Voltage Span (typ.) 0.2 Vdc to (Vs - 0.2 Vdc)
Null (Output @ 0 G) 5.0 Vdc ± 1.0 Vdc
Response Tim e (µs) 3 µs
Se rie s Nam e SS491
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