component
Infineon: IM72D128
Public Unreviewedby Caleb
Infineon_IM72D128: PDM MEMs Microphone using ADAU7002 for PDM-TO-I²S convertion. To be fitted into I2S_Carrier.
← Commit history
README.mdadded+61@@ -0,0 +1,61 @@+# Infineon_IM72D128++Infineon_IM72D128: PDM MEMs Microphone using ADAU7002 for PDM-TO-I²S convertion. To be fitted into I2S_Carrier.++Daughter card for the standardized [I2S_Carrier](https://wiki.adom.inc/caleb/i2s-carrier): finger-edge board (no machine pins — the carrier provides the dock) pairing the Infineon XENSIV IM72D128 PDM microphone with an ADI ADAU7002 PDM→I2S bridge.++## Signal chain++`IM72D128 (PDM, 1-bit ΣΔ) → ADAU7002 (PDM→I2S) → J2 fingers (SD / WS / SCK)`++`MIC_SEL` (J1.2) drives the mic's SELECT pin — pulled to +3v3 through 100 kΩ on-board (default = right/rising edge); the I2S_Carrier's jumper ties it to GND for left/falling.++## IM72D128 key specs (XENSIV, Sealed Dual Membrane)++| Parameter | Value |+|---|---|+| SNR | 72 dB(A) @ 3.072 MHz clock |+| Sensitivity | −36 dBFS ±1 dB @ 94 dB SPL |+| AOP | 128 dB SPL (10 % THD) |+| Dynamic range | 106 dB |+| THD | 0.5 % @ 94 dB SPL |+| Frequency range | 20 Hz – 20 kHz |+| VDD | 1.62 – 3.6 V (3.3 V on this board) |+| IDD | 980 µA @ 3.072 MHz · 25 µA standby |+| Ingress | IP57 (sealed dual-membrane MEMS) |+| Package | 4.00 × 3.00 × 1.2 mm, PG-LLGA |+| Port | Bottom (PCB sound hole under mic) |++Power mode is auto-selected by clock frequency; ultrasonic capture to 80 kHz @ 4.8 MHz clock.++## Pin Map++### J1 — POWER / SELECT (fingers, 3×1 mm)++| Pin | Net | Notes |+|---|---|---|+| 1 | `+3v3` | mic VDD + ADAU7002 IOVDD |+| 2 | `MIC_SEL` | SELECT; 100 kΩ pull-up to +3v3 |+| 3 | `GND` | |++### J2 — I2S (fingers, 3×1 mm)++| Pin | Net | Notes |+|---|---|---|+| 1 | `SD` | ADAU7002 SDATA; 100 kΩ to GND |+| 2 | `WS` | ADAU7002 LRCLK |+| 3 | `SCK` | ADAU7002 BCLK |++### U2 — IM72D128 (internal)++| Pin | Net |+|---|---|+| 1 DATA | `PDM_DATA` |+| 2 VDD | `+3v3` |+| 3 CLOCK | `PDM_CLK` |+| 4 SELECT | `MIC_SEL` |+| 5 GND | `GND` |++## Conversion note++Standard (non-molecule) OCCT conversion — this daughter has no MP markers or machine pins by design; anchoring and footprint JSON do not apply. Dock mechanics live on the I2S_Carrier.
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "infineon-im72d128",+ "version": "1.0.0",+ "type": "component",+ "component": {+ "mpn": "IM72D128V01XTMA1",+ "manufacturer": "Infineon",+ "package": "PG-LLGA-5-4 (mic) on I2S daughter card",+ "category": "audio",+ "subcategory": "microphone"+ },+ "description": "Infineon_IM72D128: PDM MEMs Microphone using ADAU7002 for PDM-TO-I²S convertion. To be fitted into I2S_Carrier.",+ "tags": [+ "daughter",+ "microphone",+ "mems",+ "i2s",+ "pdm",+ "infineon",+ "xensiv",+ "kicad"+ ],+ "hero": {+ "type": "billboard",+ "headline": "Infineon IM72D128",+ "subhead": "XENSIV PDM MEMS mic + ADAU7002 I2S daughter for the I2S Carrier",+ "screenshot": "screenshots/hero.png"+ },+ "dependencies": {},+ "author": {+ "name": "Caleb",+ "email": "[email protected]"+ }+}