Product Overview
The SL-W-TRS-5.5Dx series are high-precision digital output differential infrared thermopile sensors designed for a wide range of non-contact temperature measurement products and industries. These sensors integrate a MEMS thermopile sensor chip, an NTC thermistor, and a professional signal conditioning ASIC chip. The ASIC features a 24-bit Sigma-Delta high-precision ADC, a low-noise PGA, and interface circuitry. The series comprises six models (D1 to D6), combining a base sensor (D1) with a base sensor and optical cup, suitable for temperature measurement applications in products like medical devices, smart wearables, and electronic sentinels.
Product Attributes
- Brand: SLKormicro
- Series: SL-W-TRS-5.5Dx
- Packaging: TO-46 metal can package
- Interface: Standard I2C
Technical Specifications
| Parameter | Symbol | Min | Typical | Max | Unit | Notes |
|---|---|---|---|---|---|---|
| Absolute Maximum Ratings | ||||||
| Supply Voltage | VDD | -0.3 | 4.2 | V | ||
| Digital Output Voltage | -0.3 | VDDIO+0.3 | V | |||
| ESD Protection (HBM) | 2 | kV | ||||
| Storage Humidity | 40 | % RH | ||||
| Storage Temperature | -40 | 100 | ||||
| Performance Parameters | ||||||
| Chip Size | 1.121.12 | mm | ||||
| Sensitive Area | 0.7 0.7 | mm | ||||
| Field of View (FOV) | 60 | 90 | ||||
| Operating Temperature | -30 | 90 | ||||
| Supply Voltage | 2.3 | 3.3 | 3.6 | V | ||
| Typical Application Mode Operating Current | Iavdd | 733 | 800 | A | default configuration | |
| Sleep Current | Isleep | 5 | A | |||
| Standby Current (25) | 100 | nA | ||||
| ADC Resolution | 24 | Bit | ||||
| Temperature Measurement Range | 0 | 150 | Object temperature application | |||
| Temperature Measurement Range | 28 | 42 | Body temperature application | |||
| Temperature Measurement Accuracy (Object Temp) | 2 | To 100 | ||||
| Temperature Measurement Accuracy (Object Temp) | 3% | readout | To > 100 | |||
| Temperature Measurement Accuracy (Object Temp) | 0.3 | |||||
| Temperature Measurement Accuracy (Body Temp) | 0.3 | |||||
Note: Unless otherwise specified, conditions are VCC = 3.3V, ambient temperature 25C, and PGA gain 64x.
Standard Temperature Accuracy: Accuracy specified for Ta between 0C to 40C and To between 0C to 150C. (Refer to Figure 3 for detailed chart).
Medical Temperature Accuracy: Accuracy specified for Ta between 15C to 40C and To between 28C to 42C. (Refer to Figure 4 for detailed chart).
Note: Accuracy specifications apply only under stable isothermal conditions. Sensor accuracy does not represent final product accuracy. Temperature differences on the sensor package can affect measurement accuracy.
General Registers
| Address | Description | R/W | Default |
|---|---|---|---|
| 0x00 | Soft Reset | W | 0x00 |
| 0x02 | Data Ready (Temp_rdy, To_drdy, Ta_drdy) | R | 0x00 |
| 0x03 | Raw Data Ready (To_raw_drdy, Ta_raw_drdy) | R | 0x00 |
| 0x10-0x12 | Object Temperature Output (after DSP and IIR filter) | R | 0x00 |
| 0x16-0x18 | Ambient Temperature Output (internal sensor, calibrated) | R | 0x00 |
| 0x22-0x24 | Object Temperature Raw Data (before calibration) | R | 0x00 |
| 0x30 | Command Register (sleep_en, clk_mode, mode_en, mode_sel) | RW | 0x00 |
EEPROM Registers
| Address | Description | R/W |
|---|---|---|
| 0x92 | Chip Address (Configurable I2C address) | RW |
| 0x93 | System Configuration (FILT_COEF, output_mode, OSR_T) | RW |
| 0x94 | System Configuration (adc_dither_en, SERIAL_filter_en, VT_SCALE) | RW |
| 0x95 | Sensor Configuration (Gain_P, OSR_P) | RW |
| 0x97 | BPS Configuration (RES_DAC) | RW |
Digital Communication
The device supports I2C communication protocol. The I2C device address can be configured via the Chip_Address register (0x92). A general call 7-bit address is 0x7F.
Mechanical Specifications
| Pin | Symbol | Definition |
|---|---|---|
| 1 | SDA | Serial Data Input/Output (I2C Data) |
| 2 | SCL | Serial Clock Input (I2C Clock) |
| 3 | VDD | Core Chip Power Supply |
| 4 | GND | Ground |
Refer to Figures 8 and 9 for base pin definitions and dimensional drawings. External dimensions for SL-W-TRS-5.5Dx series models are provided in Figures 10-12.
Recommended Reflow Curve
Refer to Figure 13 and Table 9 for recommended lead-free solder reflow temperature curve parameters.
Other Recommendations
- Handle with care to avoid damage from pressure and electrostatic discharge exceeding absolute maximum ratings.
- Avoid contact with corrosive cleaning agents. Clean optical windows with alcohol and cotton swabs.
- Store in a well-sealed environment, protected from moisture, shock, dust, and static electricity.
- Consult the company or its representatives before applying the product in special circumstances where improper operation could affect semiconductor life or cause physical damage.
2408261718_Slkor-SL-W-TRS-5-5D1_C41369470.pdf
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