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Silicon Labs SI7210-B-05-IVR
- Part No.:
- SI7210-B-05-IVR
- Manufacturer:
- Silicon Labs
- Category:
- Linear, Compass (ICs)
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SI7210-B-05-IVR.pdf
- Description:
- I2C PROGRAMMABLE HALL EFFECT MAG
- Quantity:
- Payment:
- Shipping:
Inventory:4,373
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Product details
Overview
SI7210-B-05-IVR from Silicon Labs is a high-sensitivity omnipolar Hall effect magnetic switch in SOT23-3 package, delivering 2.0 mT maximum operate point (BOP), 0.6 mT minimum release point (BRP), and 0.6 mT hysteresis across –40°C to +125°C. It features low-power push-pull digital output, 1.7–5.5 V supply range, and 0.4 µA typical current consumption at 5 Hz sampling-ideal for battery-powered door lock position sensing.
For engineers reviewing the SI7210-B-05-IVR datasheet, SI7210-B-05-IVR pinout, SI7210-B-05-IVR application, or SI7210-B-05-IVR equivalent, key selection considerations include its calibrated omnipolar switching behavior, factory-programmed temperature compensation, tamper detection capability (19.8 mT threshold), and compatibility with small neodymium magnets in space-constrained industrial enclosures.
Technical Context
The SI7210-B-05-IVR integrates a chopper-stabilized Hall element, 13-bit ADC, and digital signal processing to deliver precise offset and temperature drift compensation. Its fixed configuration includes omnipolar operation, low-output (push-pull) polarity, and 20 mT full-scale magnetic range.
It operates in continuous sampling mode at 5 Hz with no external control pins-unlike 5-pin variants-making it suitable for simple presence detection where disable or tamper monitoring is not required. The device wakes instantly on power-up and updates output within 11 µs per conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| BOP max | 2.0 mT - enables reliable actuation with larger air gaps or weaker magnets |
| BRP min | 0.6 mT - ensures clean release without chatter near field zero-crossing |
| Hysteresis | 0.6 mT - provides noise immunity against mechanical vibration or field ripple |
| Supply range | 1.71–5.5 V - supports direct connection to Li-ion, 3.3 V, or 5 V rails without regulation |
| IDD typ | 0.4 µA at 5 Hz - extends battery life to years in wireless sensor nodes |
| Temp range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Output type | Push-pull digital - eliminates need for external pull-up resistor, reducing BOM count |
Pinout & Package
SOT23-3 surface-mount package (JEDEC MO-193AB), 2.9 mm × 2.75 mm × 1.15 mm body height, with gull-wing leads optimized for automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power input | Accepts 1.71–5.5 V; internal regulator supplies analog/digital blocks; no external decoupling required beyond 0.1 µF |
| OUT1 | Digital output | Push-pull, active-low when magnetic field exceeds BOP; drives logic inputs directly without level-shifting |
| GND | Reference ground | Single-point return for Hall element, ADC, and output driver; must be connected before VDD during power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Omnipolar switching | Detects both north and south poles-enables single-magnet solutions in rotary knobs or sliding mechanisms |
| Factory-calibrated hysteresis | 0.6 mT fixed hysteresis eliminates need for external RC timing networks or software debouncing |
| Chopper-stabilized architecture | Reduces offset drift to ±250 µT over full temperature range-maintains accuracy without calibration |
| Low-noise 13-bit ADC | 30 µT RMS noise floor enables sub-millitesla resolution for fine-position feedback in HVAC actuators |
| Integrated temperature compensation | Flat tempco < ±0.05 %/°C over 0–70°C-preserves operate/release points across thermal cycling |
Applications
| Door Lock Position Sensing | HVAC Knob Rotation Detection |
|---|---|
Use Scenario: Monitoring latch engagement status in smart entry systems using a small magnet embedded in the strike plate. IC Role / Device Role / Timing Role: Magnetic switch providing binary open/closed state to microcontroller GPIO with <11 µs response latency. Use Value: 2.0 mT BOP allows use of low-cost ferrite magnets at 3 mm air gap; 0.4 µA quiescent current enables >10-year battery life in wireless locks. | Use Scenario: Detecting rotational position of HVAC control knobs via magnet mounted on shaft and sensor fixed on PCB. IC Role / Device Role / Timing Role: Omnipolar switch generating edge-triggered pulses per detent, synchronized to knob movement. Use Value: 0.6 mT BRP ensures clean release between positions; push-pull output interfaces directly with 3.3 V MCU without pull-up resistor. |
| Industrial Fluid Level Switch | BLDC Motor Commutation Feedback |
Use Scenario: Non-contact liquid level indication in chemical tanks using float-mounted magnet and externally mounted sensor. IC Role / Device Role / Timing Role: Threshold-based magnetic presence detector triggering alarm or PLC input upon float rise/fall. Use Value: –40°C to +125°C rating supports harsh environments; 1.7–5.5 V supply accommodates wide-range industrial power rails. | Use Scenario: Rotor position feedback for 3-phase BLDC motor control in cordless power tools. IC Role / Device Role / Timing Role: Commutation sensor providing six-step Hall pattern to motor driver IC or MCU. Use Value: 5 Hz sampling rate sufficient for low-RPM applications; push-pull output drives gate drivers directly without buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si7210-B-04-IV | Lower BOP (1.4 mT), same package/temp range, identical 0.4 µA IDD | Better suited for proximity detection with weak fields or large air gaps | Select when higher sensitivity is needed and tighter hysteresis (0.4 mT) improves noise margin |
| Si7210-B-06-IV | Same BOP/BRP, but open-drain output instead of push-pull | Required for wired-OR bus configurations or level-shifting to higher voltage domains | Choose only if system requires external pull-up or multi-drop signaling topology |
Compared with SI7210-B-05-IVR, Si7210-B-04-IV offers greater sensitivity for marginal field conditions, while Si7210-B-06-IV trades push-pull simplicity for wiring flexibility-neither matches the exact 2.0/0.6 mT operate-release pair and integrated drive strength of SI7210-B-05-IVR in cost-sensitive, space-constrained switches.
Availability
SI7210-B-05-IVR is available at Aetrix Electronics and suitable for door lock position sensing, HVAC knob rotation detection, and industrial fluid level switching requiring stable component supply and long-term manufacturability.
Supply support for SI7210-B-05-IVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Silicon Labs is a fabless semiconductor company specializing in precision analog, mixed-signal, and IoT connectivity solutions for industrial, automotive, and consumer markets.
The Si720x family was designed specifically for robust, low-power magnetic position sensing-replacing mechanical switches and reed relays with solid-state reliability, extended lifetime, and superior ESD immunity (2 kV HBM).
FAQ
What is the magnetic operate point (BOP) specification for SI7210-B-05-IVR?
The SI7210-B-05-IVR has a maximum operate point (BOP) of 2.0 mT and a typical BOP of 1.6 mT, measured at –40°C to +125°C. This value defines the strongest magnetic field at which the device guarantees switching from low to high output when an appropriate pole approaches the bottom of the SOT23 package. The SI7210-B-05-IVR uses this fixed threshold without user adjustment.
Does SI7210-B-05-IVR support unipolar or omnipolar magnetic field detection?
SI7210-B-05-IVR is configured as an omnipolar switch-it responds to both north and south magnetic poles. This behavior is factory-programmed and cannot be changed in-circuit. The device asserts its output when either pole exceeds the 2.0 mT BOP threshold, making it ideal for applications where magnet orientation is unconstrained, such as rotating dials or sliding latches.
What is the supply voltage range and current consumption of SI7210-B-05-IVR?
SI7210-B-05-IVR operates from 1.71 V to 5.5 V and draws 0.4 µA typical current at 5 Hz sampling rate. At 25°C and 3.3 V, sleep-mode current is 50 nA, and conversion current peaks at 5 mA for 11 µs per sample. These values are specified in the Si720x datasheet Rev. 1.7 and confirmed in Table 1.2 and Table 1.3 for SI7210-B-05-IVR's variant group.
Is SI7210-B-05-IVR pin-compatible with other Si720x family members in SOT23-3?
Yes-SI7210-B-05-IVR shares identical SOT23-3 pinout (VDD, OUT1, GND) and footprint with all Si7201/02/05/06 3-pin variants. However, electrical behavior differs: SI7210-B-05-IVR is a low-output push-pull switch with 2.0/0.6 mT thresholds, whereas Si7201-B-00-FV uses 1.1/0.2 mT and Si7205-B-00-IV supports 3.3–26.5 V. Direct substitution requires validation of magnetic and supply requirements.
Does SI7210-B-05-IVR include tamper detection capability?
Yes-SI7210-B-05-IVR provides tamper detection at 19.8 mT, implemented by monitoring output reversion to zero-field level under high magnetic field. This feature is enabled by default and does not require additional pins or configuration. It is documented in Table 5.1 of the Si720x datasheet Rev. 1.7 for SI7210-B-05-IVR and related variants with "*" marking.
SI7210-B-05-IVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Technology:
- Hall Effect
- Axis:
- Single
- Output Type:
- I2C
- Sensing Range:
- ±200mT
- Voltage - Supply:
- 1.71V ~ 5.5V
- Current - Supply (Max):
- 0.4µA (Typ)
- Current - Output (Max):
- -
- Resolution:
- 13 b
- Bandwidth:
- 20kHz
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Features:
- Programmable
- Supplier Device Package:
- SOT-23-5
- Mounting Type:
- Surface Mount
SI7210-B-05-IVR FAQ
1.How can I place an order for SI7210-B-05-IVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI7210-B-05-IVR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI7210-B-05-IVR reliable?
The price and inventory of SI7210-B-05-IVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI7210-B-05-IVR is usually 5 days.
3.What payment methods are accepted for SI7210-B-05-IVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI7210-B-05-IVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI7210-B-05-IVR?
SI7210-B-05-IVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI7210-B-05-IVR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI7210-B-05-IVR?
For technical support, including SI7210-B-05-IVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI7210-B-05-IVR requirements.
6.How does Aetrix verify that SI7210-B-05-IVR is sourced from the original manufacturer or authorized distributors?
All SI7210-B-05-IVR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI7210-B-05-IVR meets industry standards.
7.What is the process for return or replacement of SI7210-B-05-IVR?
All SI7210-B-05-IVR units undergo pre-shipment inspection (PSI). If there is an issue with SI7210-B-05-IVR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI7210-B-05-IVR part is unused and in its original packaging.
Return procedure for SI7210-B-05-IVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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