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SPH0645LM4H-1
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Especificações
| Atributo | Valor |
| Series | SPH |
| PartStatus | Active |
| Type | MEMS (Silicon) |
| OutputType | Digital, I2S |
| Direction | Omnidirectional |
| FrequencyRange | 60 Hz ~ 20 kHz |
| Sensitivity | -26dB ±1dB @ 94dB SPL |
| S/NRatio | 65dB |
| Voltage-Rated | 1.8 V |
| VoltageRange | 1.62 V ~ 3.6 V |
| Current-Supply | 600 µA |
| PortLocation | Bottom |
| Termination | Solder Pads |
| Size/Dimension | 0.138" L x 0.104" W (3.50mm x 2.65mm) |
| Height(Max) | 0.043" (1.08mm) |
| Shape | Rectangular |
Visão Geral
Description
The SPH0645LM4H-1 is a digital MEMS microphone from Knowles, designed for high-performance audio applications. Key features include:
- Digital Output: Uses I²S/PCM interface for direct connection to processors.
- Omnidirectional Sensitivity: Captures clear audio with a −26 dBFS sensitivity.
- Low Power: Consumes 1.6 mA at 1.8 V, ideal for battery-powered devices.
- Wide Frequency Response: 20 Hz – 20 kHz range for full-spectrum audio.
- High SNR: 64 dBA signal-to-noise ratio for minimal distortion.
- Compact Size: 3.76 x 2.95 x 1.1 mm SMT package.
Commonly used in smart speakers, wearables, and IoT devices, it offers robust performance in noisy environments. The bottom-port design enhances acoustic performance while simplifying integration.
For detailed specs, refer to the Knowles datasheet.
- Digital Output: Uses I²S/PCM interface for direct connection to processors.
- Omnidirectional Sensitivity: Captures clear audio with a −26 dBFS sensitivity.
- Low Power: Consumes 1.6 mA at 1.8 V, ideal for battery-powered devices.
- Wide Frequency Response: 20 Hz – 20 kHz range for full-spectrum audio.
- High SNR: 64 dBA signal-to-noise ratio for minimal distortion.
- Compact Size: 3.76 x 2.95 x 1.1 mm SMT package.
Commonly used in smart speakers, wearables, and IoT devices, it offers robust performance in noisy environments. The bottom-port design enhances acoustic performance while simplifying integration.
For detailed specs, refer to the Knowles datasheet.
Equivalent
Equivalent products to the SPH0645LM4H-1 (MEMS microphone) include:
- Knowles SPH0641LM4H-1 (similar specs, lower SNR)
- InvenSense ICS-43434 (I2S output, comparable sensitivity)
- TDK/InvenSense ICS-41350 (analog output, similar size)
- STMicroelectronics MP34DT05 (digital PDM output, 64 dB SNR)
- Knowles SiSonic series (e.g., SPU0410LR5H-QB, analog output).
Check datasheets for exact compatibility in sensitivity, SNR, and output type (I2S/PDM/analog).
- Knowles SPH0641LM4H-1 (similar specs, lower SNR)
- InvenSense ICS-43434 (I2S output, comparable sensitivity)
- TDK/InvenSense ICS-41350 (analog output, similar size)
- STMicroelectronics MP34DT05 (digital PDM output, 64 dB SNR)
- Knowles SiSonic series (e.g., SPU0410LR5H-QB, analog output).
Check datasheets for exact compatibility in sensitivity, SNR, and output type (I2S/PDM/analog).
Features
The SPH0645LM4H-1 is a MEMS microphone with the following key features:
- Digital Output (I²S interface) – Supports 24-bit resolution.
- Omnidirectional Sensitivity – High signal-to-noise ratio (64 dB SNR).
- Low Power Consumption – Typically 1.6 mA at 1.8 V.
- Wide Frequency Response – 50 Hz to 15 kHz.
- Small Form Factor – 3.76 x 2.95 x 1.1 mm (L x W x H).
- High Acoustic Overload Point (AOP) – 120 dB SPL.
- Operating Voltage – 1.6 V to 3.6 V.
- Bottom Port Design – Suitable for surface-mount applications.
- Robust Performance – Resistant to RF interference and environmental noise.
Ideal for smartphones, wearables, and IoT devices requiring high-fidelity audio capture.
- Digital Output (I²S interface) – Supports 24-bit resolution.
- Omnidirectional Sensitivity – High signal-to-noise ratio (64 dB SNR).
- Low Power Consumption – Typically 1.6 mA at 1.8 V.
- Wide Frequency Response – 50 Hz to 15 kHz.
- Small Form Factor – 3.76 x 2.95 x 1.1 mm (L x W x H).
- High Acoustic Overload Point (AOP) – 120 dB SPL.
- Operating Voltage – 1.6 V to 3.6 V.
- Bottom Port Design – Suitable for surface-mount applications.
- Robust Performance – Resistant to RF interference and environmental noise.
Ideal for smartphones, wearables, and IoT devices requiring high-fidelity audio capture.
Pinout
The SPH0645LM4H-1 is a digital MEMS microphone with the following key specifications:
- Pin Count: 6 pins (LGA package).
- Functions:
- VDD: Power supply (1.6V–3.6V).
- GND: Ground.
- CLK: Clock input (1–4 MHz, supports PDM output).
- DATA: Digital PDM output.
- LR SEL: Channel select (left/right for stereo configurations).
- NC: No connection (unused pin).
It features omnidirectional sensitivity, low power consumption, and a 64 dB SNR, making it suitable for applications like smartphones, IoT devices, and voice recognition systems.
- Pin Count: 6 pins (LGA package).
- Functions:
- VDD: Power supply (1.6V–3.6V).
- GND: Ground.
- CLK: Clock input (1–4 MHz, supports PDM output).
- DATA: Digital PDM output.
- LR SEL: Channel select (left/right for stereo configurations).
- NC: No connection (unused pin).
It features omnidirectional sensitivity, low power consumption, and a 64 dB SNR, making it suitable for applications like smartphones, IoT devices, and voice recognition systems.
Application
The SPH0645LM4H-1 is a digital MEMS microphone designed for high-performance audio applications. Key application areas include:
- Smartphones & Tablets: For voice calls, voice assistants, and recording.
- Laptops & Headsets: Enhancing voice clarity in video conferencing and communication.
- IoT Devices: Enabling voice control in smart home products.
- Automotive Systems: Used in hands-free calling and in-car voice recognition.
- Gaming & AR/VR: Capturing clear audio in immersive environments.
Its low power consumption, small size, and high SNR make it ideal for compact, battery-powered devices requiring reliable audio capture.
- Smartphones & Tablets: For voice calls, voice assistants, and recording.
- Laptops & Headsets: Enhancing voice clarity in video conferencing and communication.
- IoT Devices: Enabling voice control in smart home products.
- Automotive Systems: Used in hands-free calling and in-car voice recognition.
- Gaming & AR/VR: Capturing clear audio in immersive environments.
Its low power consumption, small size, and high SNR make it ideal for compact, battery-powered devices requiring reliable audio capture.
Package
The SPH0645LM4H-1 is a MEMS microphone with a top-port, surface-mount (SMT) package. It features a 3.76 x 2.95 x 1.1 mm form factor, making it compact for PCB integration. The package includes an acoustic port on the top for sound capture and is designed for reflow soldering. It complies with RoHS standards.
