SM351
Full part number: SM351LT
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the SM351 does
The Honeywell Nanopower SM35xLT family comprises ultra-sensitive magnetoresistive sensor ICs available as the SM351LT and SM353LT variants. These devices operate on a single supply of 1.65 V to 5.5 V, featuring typical average currents of 360 nA and 310 nA respectively, with gain sensitivities reaching 7G and 14G. The parts utilize a push-pull output requiring no external pull-up resistor and function across a temperature range of -40°C to 85°C. Engineers typically employ these components in battery-optimized position sensing, fluid flow detection, and security systems where replacing reed switches is necessary. The compact SOT-23 package supports automated assembly for industrial, medical, and consumer applications.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| supply voltage range | 1.65 V | 1.8 V | 5.5 V | Vs reference to ground; (vs); A. Electrical Specifications (Vs = 1.65 V to 5.5 V, Ta = -40 °C to 85 °C [-40 °F to 185 °F], Typ. at 1.8 V, 25 °C [77 °F] unless otherwise specified.) | Honeywell datasheet, p. 1 — Table 1A. Electrical Specifications (Vs = 1.65 V to 5.5 V, Ta = -40… |
| operating temperature (abs max) | -40 °C | — | 85 °C | Honeywell datasheet, p. 4 — 表3. 绝对最大额定值 | |
| standby current | — | 200 nA | 590 nA | —; Awake current: | Honeywell datasheet, p. 1 — Table 1B. Electrical Specifications (Vs = 1.8 V, Ta = 25 °C [77 °F]… |
| sample rate | — | 10 Hz | — | derived from typical sleep phase time of 100 ms + wake phase time of 15 µs | Honeywell datasheet, p. 3 — Nanopower系列磁敏电阻传感器IC |
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Frequently asked questions
What is the maximum operating temperature for the SM351LT?
The operating temperature is 85 °C.
What is the sample rate of the SM351LT?
The sample rate is 10 Hz, derived from typical sleep phase time of 100 ms + wake phase time of 15 µs.
What is the standby current for the SM351LT?
The standby current is 200 nA.
What is the supply voltage range for the SM351LT?
The supply voltage range is 1.8 V with Vs reference to ground.