š Product Overview
The XINGLIGHT XL-IRM0038A is a dedicated infrared receiver module designed for remote control systems. š” It integrates a high-speed, high-sensitivity PIN photodiode and a low-power, high-gain preamplifier IC into a single epoxy resin package.
This component features internal and external shielding to resist environmental interference. š It is primarily used to capture 37.9kHz infrared signals in appliances and multimedia devices, converting them into low-active TTL/CMOS signals for microcontrollers.
šÆ Typical Applications
The XL-IRM0038A is optimized for environments requiring stable reception and wide operating voltages (2.7Vā5.5V). Common deployment scenarios include:
- Consumer Appliances: Air conditioners, fans, heaters, and humidifiers.
- Multimedia Systems: Televisions, DVD players, set-top boxes, and vehicle-mounted DVD units.
- Industrial & Peripheral: Industrial automation instrumentation, computer peripherals, and induction sanitaryware.
- Automotive & Lighting: Automotive electronics and financial terminal equipment.
š Key Technical Specifications
The module is tuned for a carrier frequency of 37.9kHz with a bandwidth (BPF) of 6kHz. The table below highlights standard electrical characteristics under typical test conditions (Ta=25Ā°C):
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 2.7 | - | 5.5 | V | Recommended Range |
| Carrier Freq | $f_0$ | - | 37.9 | - | kHz | - |
| Working Current | $I_{CC}$ | 0.3 | 0.4 | 0.5 | mA | $V_{DD}=5V$ |
| Reception Distance | $L$ | 6 | 8 | - | m | $0^\circ$ Angle |
| Reception Distance | $L$ | 5 | 6 | - | m | $\pm 35^\circ$ Angle |
| Low Level Output | $V_{OL}$ | - | - | 250 | mV | $I_{sink}=2.0mA$ |
| High Level Output | $V_{OH}$ | 4.5 | - | 5.0 | V | $V_{CC}=5V$ |
| Burst Pulse Width | $T_{pwl}$ | 400 | 600 | 800 | $\mu s$ | burst wave |
šØ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent damage to the device. š” Designers must ensure these limits are respected during circuit design and PCB layout to maintain yield rates.
| Parameter | Symbol | Rating | Unit | Notes |
|---|---|---|---|---|
| Supply Voltage | $V_{DD}$ | 6.0 | V | Do not exceed |
| Operating Temp | $T_{opr}$ | -20 ~ +85 | Ā°C | Ambient range |
| Storage Temp | $T_{stg}$ | -40 ~ +125 | Ā°C | Non-operating |
| Wave Soldering | $T_{sol}$ | 240 | Ā°C | $\le 6s$ duration |
| Manual Welding | $T_{sol}$ | 300 | Ā°C | $\le 3s$ duration |
| Output Voltage | $V_{out}$ | -0.3 ~ $V_{DD}$+0.3 | V | Relative to GND |
š¦ Package, Dimensions & Assembly Notes
The XL-IRM0038A utilizes a compact, semi-circular spherical epoxy package designed for durability and light focus.
- Dimensions: 5.0mm (L) x 5.0mm (W) x 3.5mm (H).
- Pin Length: 22mm (Standard).
- Viewing Angle: Designed for wide-angle reception, maintaining signal integrity at $\pm 35^\circ$.
- Shielding: Dual shielding (internal and external) minimizes electrical noise from fluorescent lamps (40W electronic ballast) and sunlight.
- PCB Mounting: Standard lead spacing allows for easy wave soldering or manual assembly. Ensure the temperature profile does not exceed the absolute maximum ratings listed above to prevent delamination or performance degradation.
š¦ Sourcing & Supply Considerations
When integrating the XL-IRM0038A into BOMs, procurement teams should verify stock authenticity and packaging specifications.
- Compliance: The product is REACH and ROHS certified, meeting standard environmental requirements for EU and global markets.
- Grading: Reception distance grading (L1, L2, L3) may be available; specify minimum distance requirements during sampling.
- Supply Chain: Verify lead times for high-volume orders to prevent production bottlenecks.
ā FAQ
Q: What is the carrier frequency tolerance for this module?
A: The XL-IRM0038A is designed for a typical carrier frequency ($f_0$) of 37.9 kHz. While the datasheet lists the typical value, the Band Pass Filter (BPF) width is 6 kHz, allowing for slight variations in the transmitter signal while maintaining reception integrity.
Q: Can this receiver operate directly with 3.3V microcontrollers?
A: Yes. The recommended supply voltage range is 2.7V to 5.5V. Furthermore, the output is compatible with both TTL and CMOS logic levels, making it safe to interface directly with 3.3V or 5V MCUs without level shifters.
Q: How does the dual shielding design benefit the final product?
A: The internal and external shielding significantly improves the Signal-to-Noise Ratio (SNR). This allows the receiver to function reliably in environments with electrical interference, such as near TVs, computers, or under fluorescent lighting (200Ā±50 Lux), reducing false triggers.
Q: What precautions should be taken during soldering?
A: š For wave soldering, temperatures should not exceed 240Ā°C for longer than 6 seconds. For manual welding, the limit is 300Ā°C for 3 seconds. Adhering to these limits prevents thermal stress damage to the internal preamplifier IC.
