AH3978Q Series

Automotive Dual Hall Effect Latch with Speed & Direction Outputs Integrated Self-diagnostics

Catalog

Automotive Dual Hall Effect Latch with Speed & Direction Outputs Integrated Self-diagnostics

Part	Polarization	Package / Case	Function	Supplier Device Package	Current - Output (Max) [Max]	Sensing Range [Min]	Sensing Range [Max]	Output Type	Features	Technology	Mounting Type	Test Condition [Max]	Test Condition [Min]	Current - Supply (Max) [Max]	Voltage - Supply [Min]	Voltage - Supply [Max]
Diodes Inc AH3978Q-WT-7	North Pole South Pole	SOT-23-5 Thin TSOT-23-5	Dual Latch	TSOT-25 (Type A1)	44 mA	-10 mT	10 mT	Open Drain	Temperature Compensated	Hall Effect	Surface Mount	150 °C	-40 °C	7 mA	2.7 V	27 V

Catalog

Automotive Dual Hall Effect Latch with Speed & Direction Outputs Integrated Self-diagnostics

Key Features

• Dual Latch Hall Operation with Dual Outputs (AH3978Q) or Speed & Direction Output (AH3975Q/AH3976Q/AH3977Q)

• Wide Supply Voltage Operation: 2.7V to 27V

• Chopper Stabilized Design ProvidesSuperior Temperature StabilityMinimal Switch Point DriftEnhanced Immunity to Stress

• Superior Temperature Stability

• Minimal Switch Point Drift

• Enhanced Immunity to Stress

• Battery Polarity Reverse Connection Protection

• Transient Spike Voltage Protection

• Overtemperature Shutdown and Auto-Restart

• UVLO Protection

• High ESD Rating: HBM = 5kV, CDM = 2kV

• AEC-Q100 Grade 0 Qualified

• Ready for ISO 26262

• Built-in Self-Diagnostics for Functional Safety Requirements

• Temperature Range: -40°C to +150°C

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. "Green" Device (Note 3)

• The AH3975Q/AH3976Q/AH3977Q/AH3978Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities.https://www.diodes.com/quality/product-definitions/

Description

The AH3975Q/AH3976Q/AH3977Q/AH3978Q is an AEC-Q100 qualified high voltage dual Hall-effect sensor designed for the applications that require accurate speed and direction sensing. To support wide range of demanding applications, the design has been optimized to operate over the supply range of 2.7V to 27V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3975Q/AH3976Q/AH3977Q provides speed and direction outputs, while AH3978Q provides two independent outputs at Q1 and Q2.