Juchip Semiconductor
Analog MEMS Microphone (Top Port)
JSM2718AT42CEP4-L0
Analog MEMS Microphone (Top Port)2.75×1.85×0.9mm · Top-port
An omnidirectional, top-ported, analog-output MEMS microphone. The Ø0.5 mm acoustic port sits in the lid for front-cavity direct pickup; same 2.75 × 1.85 × 0.9 mm OCLGA 4-pin platform as the rest of the 2718 family.
- SNR
- 56 dB(A)
- AOP
- 126 dB SPL
- Sensitivity
- -42 dBV
- Supply Current
- 125μA
Key Features
Six capabilities built for the voice chainWhy JSM2718AT42CEP4-L0
High-SNR Pickup
The 56 dB(A) SNR keeps a low noise floor, preserving dynamic headroom for voice algorithms.
High AOP Headroom
An acoustic overload point of 126 dB SPL stays distortion-free in loud scenes.
Low Supply Current
A supply current of 125μA is friendly to battery-powered devices.
Compact Package
The 2.75 × 1.85 × 0.9 mm package suits space-constrained acoustic designs.
Lot-to-Lot Consistency
100% acoustic production test with SPC monitoring and full lot traceability.
Stable Volume Supply
Status: mass production — standing capacity and fast lead times.
Datasheet · Typical
Full SpecificationsSpecifications
Acoustic Performance
Acoustic| Signal-to-Noise Ratio (94 dB SPL @1 kHz, A-wt.) | 56 dB(A) |
|---|---|
| Acoustic Overload Point (10% THD @1 kHz) | 126 dB SPL |
| Sensitivity (min/typ/max) | -43 / -42 / -41 dBV |
| Total Harmonic Distortion (94 dB SPL @1 kHz) | 0.15 % |
| Power Supply Rejection (217 Hz square, A-wt.) | -101 dBV |
| PSRR (200 mVpp sine @1 kHz) | 70 dB |
| DC Output Voltage | 0.76 V |
| Output Impedance (@1 kHz) | 300 Ω |
| Directivity | Omnidirectional |
Electrical & Conditions
Electrical| Supply Voltage VDD | 1.6 – 3.6 V |
|---|---|
| Supply Current IDD | 125 µA |
| Test Conditions | 23 ±2 °C / 55 ±20 % RH |
| Absolute Max VDD | +5.0 V |
| Temperature Range (abs max) | -40 ~ +100 °C |
Mechanical & Package
Mechanical| L × W × H | 2.75 × 1.85 × 0.90 mm (±0.10) |
|---|---|
| Acoustic Port Diameter | Ø0.5 ±0.05 mm |
| Package / Port | OCLGA · top port |
Reliability
Reliability| Thermal Shock | -40 ↔ +125 °C, 100 cycles |
|---|---|
| High-Temp Storage | +105 °C, 1000 h |
| Low-Temp Storage | -40 °C, 1000 h |
| Temp/Humidity Bias | +85 °C / 85 % RH, 1000 h |
| Vibration | 20–2000 Hz, 20 g, XYZ |
| Mechanical Shock | 10,000 g × 3 axes |
| ESD (HBM / lid-GND / MM) | ±2 kV / ±8 kV / ±200 V |
| Reflow | Peak 260 °C, 5 cycles |
| Drop | 1.5 m × 18 |
| Acceptance | Sensitivity shift < 1 dB |
Compliance & Processing
Compliance| RoHS / Halogen-free | Compliant |
|---|---|
| Reflow Profile | Pb-free, peak 260 °C (J-STD-020) |
| Handling | No insertion, no vacuum on port, no ultrasonic cleaning |
Typical values at 25 C in the reference circuit; series production follows the official datasheet.
Pin Configuration
Pin DefinitionsPin Definitions
| Pin | Name | Description |
|---|---|---|
| 1 | OUTPUT | Analog output |
| 2 | GND | Ground |
| 3 | GND | Ground |
| 4 | VDD | Power supply |
All GND pins must be grounded; capacitors near the microphone must not use Class 2 dielectrics.
Applications
Typical Applications & PairingWhere It Fits
Ordering & Packaging
Ordering & PackagingHow to Buy
- Packaging
- Tape & Reel13-inch reel · 5,000 pcs (EIA-481)
- Sample Policy
- Free Sample PackRequest via inquiry
- Lead Time
- Samples: 3 daysProduction: 8–12 weeks
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