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Specifications
Voltage - Supply:
1.6V~3.6V
Mfr. Part #:
AH1898-CA4-7
Package:
WLB-4(0.8x0.8)
Key Attributes
Model Number:
AH1898-CA4-7
Product Description
Product Overview
The AH1898 is a micropower, omnipolar Hall-effect switch IC designed for portable and battery-powered consumer electronics. It features programmable magnetic sensitivity bands, internal pull-up/pull-down capability, and operates over a wide supply voltage range (1.6V to 3.6V) with minimal power consumption (4.3A typical average supply current). The device offers an 8kV ESD rating and is available in a miniature CSP package. It activates with either a north or south magnetic pole and allows for flexible sensitivity selection via the BSEL pin.
Product Attributes
- Brand: Diodes Incorporated
- Origin: Not specified
- Material: Not specified
- Color: Not specified
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
- Automotive Applications: For automotive applications requiring specific change control (e.g., AEC-Q100/101/200, PPAP capable, IATF 16949 certified facilities), contact Diodes representative.
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Electrical Characteristics | ||||||
| Output Low Voltage (ON) | IOUT = 1mA | 0.1 | 0.2 | V | ||
| Output High Voltage (OFF) | IOUT = -1mA | VDD - 0.2 | VDD - 0.1 | V | ||
| Band Select Voltage for Low Band | 0 | 0.5 | V | |||
| Band Select Voltage for High Band | 1.4 | 3.6 | V | |||
| BSEL Pin Internal Pull-Up Resistor | (Note 7) | 50 | k | Only active during AWAKE time. | ||
| Supply Current During Awake Period | 2.1 | mA | ||||
| Supply Current During Sleep Period | 2.5 | A | ||||
| Average Supply Current | VDD = 1.8V | 4.3 | 8 | A | ||
| Average Supply Current | VDD = 3.6V | 7.2 | 13 | A | ||
| Awake Time | (Note 8) | 50 | 100 | s | ||
| Period | (Note 8) | 50 | 100 | ms | ||
| D.C. Duty Cycle | 0.1 | % | ||||
| Band Transition Time | (Note 9) | 100.0 | 200.1 | ms | Varies dependent on BSEL activation timing. | |
| Magnetic Characteristics | ||||||
| Low Band - Operation Point (South Pole) | Low Band | 18 | 35 | 55 | Gauss | 1mT = 10 Gauss |
| Low Band - Operation Point (North Pole) | Low Band | -55 | -35 | -18 | Gauss | |
| Low Band - Release Point (South Pole) | Low Band | 12 | 25 | 45 | Gauss | |
| Low Band - Release Point (North Pole) | Low Band | -45 | -25 | -12 | Gauss | |
| High Band - Operation Point (South Pole) | High Band | 43 | 60 | 80 | Gauss | |
| High Band - Operation Point (North Pole) | High Band | -80 | -60 | -43 | Gauss | |
| High Band - Release Point (South Pole) | High Band | 35 | 50 | 70 | Gauss | |
| High Band - Release Point (North Pole) | High Band | -70 | -50 | -35 | Gauss | |
| Hysteresis | |Bopx|-|Brpx| | 10 | Gauss | |||
| Absolute Maximum Ratings | ||||||
| Supply Voltage | (Note 6) | 6 | V | Transient stress rating. | ||
| Reverse Supply Voltage | -0.3 | V | ||||
| Output Current (Source and Sink) | 2.5 | mA | ||||
| Package Power Dissipation | U-WLB0808-4 | 160 | mW | |||
| Storage Temperature Range | -65 | 150 | C | |||
| Maximum Junction Temperature | 150 | C | ||||
| ESD Capability (HBM) | VDD, GND and OUT Pins | 8 | kV | Human Body Model | ||
| ESD Capability (HBM) | BSEL Pin | 6 | kV | Human Body Model | ||
| Recommended Operating Conditions | ||||||
| Supply Voltage | Operating | 1.6 | 3.6 | V | ||
| Operating Temperature Range | Operating | -40 | 85 | C | ||
2412251150_DIODES-AH1898-CA4-7_C780717.pdf
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