HX711
Manufacturer
Model
HX711
Category
The HX711 is a 24-bit ADC optimized for low-frequency analog signal conversion, operating effectively in 2.6-5.5V with SOP-16 packaging. Ideal for precision weight sensors, industrial sensor networks, and battery management systems requiring high resolution and stability. Requires careful thermal management and ESD protection to maintain performance in harsh environments.
Reference Pricing
Reference Stock
Specifications
| Conversion Accuracy | 24-bit |
| Input Type | Differential Input |
| Operating Temperature Range | Not specified |
| Output Type | Serial Data Output |
| Package Type | SOP-16 |
| Power Consumption | Normal operation: 1400 μA, power-down mode: 0.2 μA |
| Rated Voltage | 2.6 ~ 5.5V |
| Resolution | 24-bit |
| Sampling Rate | 10Hz or 80Hz (depending on the configuration of the RATE pin) |
| Storage Temperature Range | Not specified |
Function And Role
Core Function
Analog-to-Digital Conversion (ADC) with 24-bit resolution and 10Hz sampling rate
Key Characteristics
- 24-bit resolution
- 2.6V-5.5V supply voltage range
- SOP-16 package
- 10Hz sampling rate
- Operating temperature: -40°C to +85°C
Application Domains
Basic Scenarios
- Precision weight measurement systems
- Sensor data acquisition for low-frequency signals
- Low-noise signal processing in industrial control
Extended Scenarios
- Environmental monitoring systems
- Industrial automation with analog sensor integration
- Battery management systems (BMS) for low-voltage applications
- Medical devices requiring high-resolution measurements
Precautions
| Soldering | Ensure proper SOP-16 packaging soldering techniques to avoid pad damage |
| Current Limit | Max input current must not exceed 1mA per channel under 5.5V supply |
| Voltage Limit | Supply voltage must remain within 2.6V-5.5V; absolute maximum 6.0V |
| Thermal Management | Maintain operating temperature below +85°C; consider heat sinks for continuous operation |
| Storage | Store in moisture-resistant environments (3 grade moisture sensitivity) below +40°C |
| Risk Warnings |
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Alternative Model Params
- Resolution (24-bit)
- Supply voltage range (2.6V-5.5V)
- Sampling rate (10Hz)
- SOP-16 package
- Operating temperature (-40°C to +85°C)
- Differential input capability
Design Recommendations
| Layout | Minimize trace lengths between ADC and sensor to reduce noise |
| Thermal | Use 0.1mm thick copper pour for heat dissipation in high-temperature environments |
| Compatibility | Pair with 3.3V/5V microcontrollers via level-shifting circuits if necessary |
| Testing | Perform 24-bit accuracy validation at 10Hz sampling rate under worst-case conditions |
Market Positioning
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| Weaknesses |
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