My Inquiry
My Account
STMicroelectronics STEVAL-MKI129V3
- Part No.:
- STEVAL-MKI129V3
- Manufacturer:
- STMicroelectronics
- Category:
- Expansion Boards, Daughter Cards
- Package:
- Datasheet:
-
STEVAL-MKI129V3.pdf
- Description:
- COUPON BOARD MP34DT01
- Quantity:
- Payment:
- Shipping:
Inventory:3,123
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STEVAL-MKI129V3 from STMicroelectronics is a microphone coupon daughterboard designed for integration with the STEVAL-MKI126Vx Smart Voice evaluation kit, hosting four MP34DT01 digital MEMS microphones, operating from 1.64 V to 3.6 V supply, delivering 63 dB SNR and -26 dBFS sensitivity with PDM single-bit output.
For engineers reviewing the STEVAL-MKI129V3 datasheet, STEVAL-MKI129V3 pinout, STEVAL-MKI129V3 application, or STEVAL-MKI129V3 equivalent, this board enables rapid acoustic performance validation of ST's top-port digital MEMS microphones in multi-mic array configurations for voice capture, beamforming, and far-field speech processing.
Technical Context
The board implements a 4-channel PDM microphone array using identical MP34DT01 devices, each with omnidirectional response and 120 dBSPL acoustic overload point, enabling synchronized digital audio sampling without external ADCs. Power conditioning and decoupling are integrated per microphone to maintain signal integrity across the 1.64–3.6 V supply range.
Designed as a detachable coupon PCB, it supports individual microphone isolation on the host STEVAL-MKI126Vx platform, allowing comparative testing of placement, orientation, and acoustic coupling effects-critical for tuning spatial audio algorithms in smart speaker and voice assistant reference designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Microphone Count | 4 × MP34DT01 devices mounted on single coupon PCB for parallel PDM output testing |
| Supply Voltage Range | 1.64 V to 3.6 V - compatible with low-voltage voice processor I/O domains and battery-powered portable designs |
| Output Interface | PDM (Pulse Density Modulation) single-bit stream - directly interfaces with digital audio controllers supporting PDM input |
| SNR | 63 dB - enables clear voice capture in moderate-noise environments (e.g., living rooms, conference rooms) |
| Sensitivity | -26 dBFS - standardized full-scale reference allows consistent gain staging across multi-mic arrays |
| Acoustic Overload Point | 120 dBSPL - prevents clipping during loud transient events such as claps or close-talking speech bursts |
Availability
STEVAL-MKI129V3 is available at Aetrix Electronics and suitable for voice interface development, smart speaker prototyping, and far-field speech recognition system validation requiring stable component supply and repeatable acoustic test hardware.
Supply support for STEVAL-MKI129V3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, sensors, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer applications.
This board belongs to ST's STEVAL (ST Evaluation) product line, engineered specifically to accelerate sensor-based system development by providing plug-and-play, application-focused hardware for rapid functional validation and algorithm tuning.
FAQ
Is STEVAL-MKI129V3 a standalone evaluation board?
No. It is a daughterboard requiring the STEVAL-MKI126Vx Smart Voice main board for power, clocking, and PDM data routing. The coupon design assumes mechanical and electrical integration into that host platform - no onboard voltage regulation or microcontroller is included.
Can the four microphones be used independently?
Yes. Each MP34DT01 is mounted on its own isolated section of the coupon PCB, allowing physical detachment for individual characterization. All four share common supply and ground but provide separate PDM outputs for independent channel acquisition.
What is the purpose of the "coupon" form factor?
The coupon layout enables quick insertion and removal from the STEVAL-MKI126Vx carrier, facilitating side-by-side comparison of different microphone variants or placements. It simplifies swapping and retesting without soldering or board-level modifications.
Does STEVAL-MKI129V3 include calibration data or firmware?
No. It is a passive hardware coupon with no embedded memory, calibration coefficients, or firmware. Acoustic performance validation relies entirely on external measurement equipment and host-side signal processing - no on-board digital processing or storage is provided.
STEVAL-MKI129V3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Platform:
- -
- Type:
- Audio
- Function:
- Microphone
- Utilized IC / Part:
- MP34DT01
- Contents:
- Board(s)
STEVAL-MKI129V3 FAQ
1.How can I place an order for STEVAL-MKI129V3 through Aetrix?
Please submit a Request for Quotation (RFQ) for STEVAL-MKI129V3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STEVAL-MKI129V3 reliable?
The price and inventory of STEVAL-MKI129V3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STEVAL-MKI129V3 is usually 5 days.
3.What payment methods are accepted for STEVAL-MKI129V3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STEVAL-MKI129V3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STEVAL-MKI129V3?
STEVAL-MKI129V3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STEVAL-MKI129V3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STEVAL-MKI129V3?
For technical support, including STEVAL-MKI129V3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STEVAL-MKI129V3 requirements.
6.How does Aetrix verify that STEVAL-MKI129V3 is sourced from the original manufacturer or authorized distributors?
All STEVAL-MKI129V3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STEVAL-MKI129V3 meets industry standards.
7.What is the process for return or replacement of STEVAL-MKI129V3?
All STEVAL-MKI129V3 units undergo pre-shipment inspection (PSI). If there is an issue with STEVAL-MKI129V3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STEVAL-MKI129V3 part is unused and in its original packaging.
Return procedure for STEVAL-MKI129V3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STEVAL-MKI129V3 Tags
-
2809
Adafruit Industries LLC
-
BOB-19626
SparkFun Electronics
-
DFR0299
DFRobot
-
5346
Adafruit Industries LLC
-
4538
Adafruit Industries LLC
-
4471
Adafruit Industries LLC
-
1980
Adafruit Industries LLC
-
4470
Adafruit Industries LLC
-
U035-B
M5Stack Technology Co., Ltd.
-
SEN0137
DFRobot
-
3191
Adafruit Industries LLC
-
4756
Adafruit Industries LLC
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
