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Syntiant SPK18R1LM4H-1 Digital Bottom Port Microphone

Syntiant SPK18R1LM4H-1 Digital Bottom Port SiSonic™ Microphone is a high-performance, low-power, bottom-port silicon digital microphone featuring a single-bit PDM output. The SPK18R1LM4H-1 implements proven SiSonic MEMS technology and incorporates an acoustic sensor, a low-noise input buffer, and a sigma-delta modulator.

The Syntiant SPK18R1LM4H-1 Digital Bottom Port SiSonic Microphone is ideal for applications such as cellphones, sensors, smartphones, and other portable electronic devices where low power and superior wideband audio performance and RF immunity are needed. Additionally, the SPK18R1LM4H-1 delivers multiple performance modes.

Features

  • Low current consumption
  • Low latency
  • High SNR
  • Excellent robustness and reliability
  • Flat frequency response
  • High drive capability
  • RF shielded
  • Bottom port
  • Sensitivity matching
  • Supports dual multiplexed channels
  • Multiple performance modes (sleep, low-power, normal)
  • Ultra-stable performance
  • Omnidirectional
  • Standard SMD reflow
  • LGA package

Applications

  • Smartphones
  • TWS
  • Headset
  • Wearables/IOT
  • Far field recordings/audio zoom
  • Always-on applications

Specifications

  • 1.62V to 1.98V supply voltage
  • -0.5V to +5.0V Vdd to ground
  • -0.3V to +5.0V DATA, CLOCK, SELECT to ground
  • ±5mA input current
  • Short circuit to/from DATA - indefinite to ground or Vdd
  • -40°C to +100°C storage and operating temperature

Block Diagram

Block Diagram - Syntiant SPK18R1LM4H-1 Digital Bottom Port Microphone

Application Circuits

Application Circuit Diagram - Syntiant SPK18R1LM4H-1 Digital Bottom Port Microphone
Publié le: 2025-11-04 | Mis à jour le: 2025-11-21