MP23ABS1TR - MEMS Microphone with Digital Output | STMicroelectronics
MPN: MP23ABS1TR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.25 | $1.25 |
| 10 | $1.12 | $11.20 |
| 100 | $0.98 | $98.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.75 | $750.00 |
Drop-in alternatives for MP23ABS1TR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MP23ABS1
✅ Drop-In📋 Reference alternative (not in catalog)
MP23ABS1TR-Q1
✅ Drop-In📋 Reference alternative (not in catalog)
SPH0645LM4H
✅ Drop-In📋 Reference alternative (not in catalog)
ICS-43434
✅ Drop-In📋 Reference alternative (not in catalog)
MP23ABS1TR Maximum Ratings & Electrical Characteristics
| Type | MEMS Microphone |
| Output Type | Digital PDM |
| Supply Voltage | 1.6 V to 3.6 V |
| Current Consumption | 650 µA |
| Signal-to-Noise Ratio (SNR) | 63 dB |
| Sensitivity | -26 dBFS |
| Frequency Response | 100 Hz to 10 kHz |
| PSRR | 70 dB |
| PDM Clock Frequency | 1.2 MHz to 3.6 MHz |
| Package | LGA-4 (3.5 mm x 2.65 mm x 0.98 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C to +85°C |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Acoustic Overload Point | 120 dB SPL |
MP23ABS1TR Pin Configuration
| Pin 1 | GND — Ground |
| Pin 2 | DATA — PDM data output |
| Pin 3 | CLK — PDM clock input |
| Pin 4 | VDD — Power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
MP23ABS1TR is suitable for 6 applications: Smartphones, Smart Speakers, Hearing Aids, IoT Devices, Wearables, Voice-Controlled Appliances.
Smartphones
The MP23ABS1TR is used in smartphones for voice capture, noise cancellation, and beamforming. Its low power consumption (650 µA) and small LGA-4 package make it ideal for space-constrained designs. The digital PDM output interfaces directly with the application processor's audio codec, simplifying the signal chain. With a 63 dB SNR, it ensures clear voice quality for calls and voice assistants. The high PSRR of 70 dB minimizes interference from the phone's power supply, maintaining audio fidelity. In multi-microphone arrays, the MP23ABS1TR's consistent sensitivity and phase response enable effective beamforming algorithms for directional audio capture.
Recommended
Smart Speakers
In smart speakers, the MP23ABS1TR enables far-field voice recognition. Its 63 dB SNR and 120 dB SPL acoustic overload point allow it to capture voice commands even in noisy environments. The digital PDM output can be connected to a DSP for wake-word detection and beamforming. The low current consumption is crucial for always-on listening modes. The compact package allows multiple microphones to be placed in an array for 360-degree sound localization. The wide frequency response (100 Hz to 10 kHz) covers the human voice spectrum, ensuring accurate speech recognition. The device's high PSRR ensures that power supply noise from the speaker's amplifier does not degrade voice capture quality.
Recommended
Hearing Aids
The MP23ABS1TR is well-suited for hearing aids due to its low power consumption (650 µA) and small size. The digital PDM output can be directly connected to a hearing aid DSP, reducing component count. The 63 dB SNR ensures clear audio amplification, while the 120 dB SPL overload point prevents distortion from loud sounds. The wide supply voltage range (1.6V to 3.6V) accommodates various battery configurations. The device's low self-noise is critical for hearing aid applications where even small amounts of noise can be audible. The compact LGA-4 package allows for miniaturized hearing aid designs that are comfortable and discreet.
Recommended
IoT Devices
For IoT devices, the MP23ABS1TR offers a balance of performance and power efficiency. Its 650 µA current consumption extends battery life in wireless sensors and smart home devices. The digital PDM output simplifies integration with low-power microcontrollers. The device's small footprint is ideal for compact IoT modules. The 63 dB SNR ensures reliable voice capture for voice-controlled IoT devices. The wide operating temperature range (-40°C to +85°C) makes it suitable for outdoor and industrial IoT applications. The high PSRR ensures stable performance in environments with varying power supply quality.
Recommended
Wearables
The MP23ABS1TR is ideal for wearables such as smartwatches and fitness trackers. Its low power consumption and small package allow for integration into compact devices. The digital PDM output can be connected to the wearable's application processor for voice commands and audio recording. The 63 dB SNR ensures clear voice capture in noisy environments like gyms or outdoors. The device's low profile (0.98 mm) enables slim wearable designs. The wide supply voltage range supports various battery chemistries. The high PSRR ensures audio quality is not affected by the wearable's power management system.
Recommended
Voice-Controlled Appliances
The MP23ABS1TR can be used in voice-controlled appliances like smart TVs, refrigerators, and thermostats. Its low power consumption is suitable for always-on voice trigger. The digital PDM output interfaces with the appliance's main processor or a dedicated audio DSP. The 63 dB SNR ensures accurate voice recognition even in noisy home environments. The compact package allows for integration into sleek appliance designs. The wide operating temperature range makes it suitable for appliances that may be exposed to heat or cold. The high PSRR ensures reliable performance despite power supply fluctuations from motors or compressors.
Recommended
Recommended Products Summary
Engineering reference data for MP23ABS1TR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MP23ABS1 | MP23ABS1TR-Q1 | SPH0645LM4H | ICS-43434 |
|---|---|---|---|---|---|
| Package | LGA-4 | LGA-4 - same | LGA-4 - same | LGA-4 - same | LGA-4 - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Knowles | TDK InvenSense |
| Output Type | Digital PDM | Digital PDM | Digital PDM | Digital PDM | Digital PDM |
| Supply Voltage | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V | 1.6V to 3.6V |
| Current Consumption | 650 µA | 650 µA | 650 µA | 600 µA | 620 µA |
| SNR | 63 dB | 63 dB | 63 dB | 61 dB | 65 dB |
| Sensitivity | -26 dBFS | -26 dBFS | -26 dBFS | -26 dBFS | -26 dBFS |
| PSRR | 70 dB | 70 dB | 70 dB | 70 dB | 70 dB |
Key Differentiators
- Higher SNR than some competitors (vs SPH0645LM4H)
- Automotive grade option available (vs ICS-43434)
- Lower current consumption than some competitors (vs ICS-43434)
Design Notes
Place the MP23ABS1TR close to the acoustic port and ensure the sound hole is not obstructed. Route the PDM clock and data lines with controlled impedance (50 ohms) and keep them away from high-frequency digital signals to avoid noise coupling. Add a 100 nF decoupling capacitor close to the VDD pin.
Ensure the microphone's acoustic port is aligned with the enclosure opening. Use a gasket or seal to prevent acoustic leakage. Keep the PDM data line short and avoid vias to minimize signal degradation. Ground the package's exposed pad to a solid ground plane for optimal performance.
Do not exceed the maximum supply voltage of 3.6V. Ensure the PDM clock frequency is within the specified range (1.2 MHz to 3.6 MHz). Avoid placing the microphone near heat sources or high-vibration components, as this can affect performance. Use a low-noise power supply to maintain the high PSRR.
Compliance Information
RoHS compliant per STMicroelectronics datasheet. Not AEC-Q100 qualified for standard version; choose MP23ABS1TR-Q1 for automotive.
