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Infineon Technologies PASCO2V01BUMA1
- Part No.:
- PASCO2V01BUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Gas Sensors
- Package:
- Datasheet:
-
PASCO2V01BUMA1.pdf
- Description:
- SENSOR CARBON DIOXIDE I2C OUTPUT
- Quantity:
- Payment:
- Shipping:
Inventory:109
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Product details
Overview
PASCO2V01BUMA1 from Infineon is a photoacoustic spectroscopy (PAS)-based CO₂ sensor IC delivering direct ppm readout via integrated microcontroller, operating across 0–32,000 ppm with ±30 ppm ±3% accuracy (400–5000 ppm), 10-year indoor lifetime, and triple digital interface (I²C/UART/PWM) - deployed in HVAC air quality feedback loops and smart home IAQ monitors.
For engineers reviewing the PASCO2V01BUMA1 datasheet, PASCO2V01BUMA1 pinout, PASCO2V01BUMA1 application, or PASCO2V01BUMA1 equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for indoor CO₂ sensing systems requiring maintenance-free operation and SMD compatibility.
Technical Context
The sensor integrates an IR emitter, MEMS microphone, and signal-processing microcontroller in a single 13.8 × 14 × 7.5 mm³ LG-MLGA-14-1 package. It uses pulsed infrared light absorption by CO₂ molecules to generate acoustic pressure waves, detected by a high-SNR MEMS microphone - eliminating optical filters and reference cells required in traditional NDIR sensors.
Digital output is delivered through three concurrent interfaces: I²C (100–400 kHz), UART (9.6 kbps), and PWM (80 Hz), with programmable measurement intervals (10–4095 s). Automatic baseline offset correction (ABOC) enables maintenance-free operation without field recalibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CO₂ Range | 0–32,000 ppm - full-scale linear measurement range suitable for ambient air (400 ppm) to confined-space alarm thresholds (5000+ ppm). |
| Accuracy | ±30 ppm ±3% of reading (400–5000 ppm) - enables precise demand-controlled ventilation and compliance with ASHRAE 62.1 indoor air quality standards. |
| Lifetime | 10 years (indoor mission profile) - stable calibration drift <0.5% per year, eliminating periodic sensor replacement in building automation systems. |
| Supply Voltages | VDD3.3 = 3.0–3.6 V; VDD12 = 10.8–13.2 V - dual-rail architecture isolates low-noise digital logic from high-power IR emitter drive circuitry. |
| Interface Options | I²C, UART, PWM - allows flexible integration: I²C for multi-sensor buses, UART for legacy MCU UART peripherals, PWM for analog-input microcontrollers. |
| Sampling Interval | 10–4095 s - configurable via register map to balance power consumption (typ. 3.5 mW avg.) and response latency in battery-powered IoT nodes. |
| Operating Temp. | 0–50 °C - supports deployment in wall-mounted thermostats, duct-mounted HVAC controllers, and in-cabin automotive air quality modules. |
Pinout & Package
Package: LG-MLGA-14-1 (13.8 × 14 × 7.5 mm³), surface-mount, reflow-compatible, with exposed thermal pad for enhanced stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD3.3 | Digital power supply | 3.3 V rail for microcontroller, interface logic, and MEMS microphone bias - must be decoupled within 10 mm of pin. |
| Rx | UART receiver input | 3.3 V CMOS input accepting UART frames; shares physical line with I²C SDA when PSEL = low. |
| SCL | I²C clock line | Open-drain I²C clock input (3.3 V domain); requires external pull-up to VDD3.3. |
| Tx/SDA | UART transmit / I²C data | Bidirectional pin: UART TX output or I²C SDA - function selected by PSEL state and interface protocol handshake. |
| PWM_DIS | PWM disable control | Active-low enable for PWM output; pulled high internally - drives low to suppress PWM during calibration or sleep. |
| GND | Analog/digital ground | Common reference for all supplies and signals; must connect to low-impedance PCB ground plane beneath thermal pad. |
| INT | Interrupt output | Open-drain alert signal (3.3 V) triggered on CO₂ threshold crossing or fault condition - requires external pull-up. |
| PSEL | Interface select | Static logic input: high = UART mode, low = I²C mode; sets Tx/SDA and Rx/SCL functional mapping at power-up. |
| PWM | CO₂ concentration PWM | 0–100% duty cycle output (80 Hz), where duty % = (CO₂ ppm / 32000) × 100 - enables analog-input MCU integration without ADC. |
| VDD12 | IR emitter power | 12 V supply for pulsed IR source; isolated from digital rails to prevent switching noise coupling into MEMS microphone path. |
Key Features
| Feature | Design Value |
|---|---|
| Photoacoustic Spectroscopy (PAS) | Eliminates optical filters and reference gas chambers - reduces size, cost, and long-term drift vs. conventional NDIR. |
| Automatic Baseline Offset Correction (ABOC) | Self-calibrates zero-point drift using ambient air exposure cycles - removes need for manual recalibration or fresh-air reset hardware. |
| Triple Interface Support | I²C, UART, and PWM outputs operate simultaneously - enables drop-in replacement across legacy and new designs without firmware rewrite. |
| Pressure Compensation | On-chip barometric pressure compensation (750–1150 hPa) - maintains accuracy across altitudes up to 3000 m without external sensor. |
| Integrated Microcontroller | Runs CO₂ transfer function, alarm thresholds, and post-processing (e.g., forced compensation) - delivers ready-to-use ppm values, not raw ADC codes. |
Applications
| HVAC Air Quality Control | Smart Home IAQ Monitor |
|---|---|
|
Use Scenario: Demand-controlled ventilation in office buildings using real-time CO₂ feedback to modulate fresh air intake. IC Role / Device Role / Timing Role: Primary CO₂ concentration sensor providing 1-minute interval ppm readings to HVAC controller MCU via I²C. Use Value: Reduces energy consumption by 20–30% versus fixed-rate ventilation while maintaining ASHRAE-compliant indoor air quality. |
Use Scenario: Compact wall-mounted air quality display showing CO₂, temperature, and humidity in residential living spaces. IC Role / Device Role / Timing Role: Standalone CO₂ sensing node interfacing to ESP32 via UART, updating display every 30 seconds. Use Value: Enables consumer-grade device certification (e.g., RESET Air) with factory-calibrated accuracy and no user maintenance. |
| In-Cabin Automotive Air Quality | Agricultural Greenhouse Monitoring |
|
Use Scenario: Real-time cabin CO₂ monitoring in EVs to trigger recirculation mode and optimize HVAC efficiency. IC Role / Device Role / Timing Role: PWM output feeds directly to vehicle body control module (BCM) analog input for closed-loop air management. Use Value: Extends EV range by reducing compressor load during low-occupancy periods without compromising occupant comfort. |
Use Scenario: Wireless CO₂ node deployed in greenhouse zones to regulate CO₂ enrichment for optimal plant growth. IC Role / Device Role / Timing Role: Low-power I²C interface with STM32L4 MCU; samples every 5 minutes and transmits via LoRaWAN. Use Value: Maintains 800–1200 ppm CO₂ setpoint with ±50 ppm repeatability across 0–40 °C, increasing tomato yield by ~12%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar CO₂ sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Amphenol T6713-500-W | NDIR-based, 400–10,000 ppm range, ±50 ppm ±5% accuracy, requires external pressure sensor for altitude compensation. | Larger footprint (22 × 16 mm), no PWM output, only UART/I²C - less suitable for space-constrained or analog-input designs. | Select when cost sensitivity outweighs size and maintenance-free requirements; verify pressure compensation implementation effort. |
| Sensirion SCD41 | PAS-based like PASCO2V01, but 400–5000 ppm range, ±(40 ppm + 5%) accuracy, no 12 V IR supply - lower power (1.3 mW), smaller (10 × 10 mm). | Limited to mid-range CO₂ monitoring; unsuitable for industrial or high-concentration leak detection scenarios beyond 5000 ppm. | Select for battery-powered portable devices where ultra-low power and compactness dominate over full-scale range and long-term stability. |
Compared with T6713-500-W and SCD41, PASCO2V01BUMA1 uniquely combines 0–32,000 ppm full-scale range, 10-year lifetime, and triple-interface flexibility - making it optimal for HVAC OEMs and automotive Tier 1s requiring robust, maintenance-free, and design-scalable CO₂ sensing.
Availability
PASCO2V01BUMA1 is available at Aetrix Electronics and suitable for HVAC control systems, smart home IAQ monitors, in-cabin automotive air quality units, and agricultural greenhouse CO₂ regulation requiring stable component supply and long-lifecycle support.
Supply support for PASCO2V01BUMA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensor solutions, and automotive ICs, with leadership in MEMS and industrial-grade reliability.
This sensor belongs to the XENSIV™ PAS portfolio, designed specifically for high-accuracy, maintenance-free CO₂ measurement in space-constrained, long-lifecycle applications such as building automation and automotive cabin air systems.
FAQ
What is the recommended PCB layout practice for PASCO2V01BUMA1 to ensure measurement stability?
Place the sensor away from heat sources and airflow obstructions; maintain ≥3 mm clearance around the gas inlet aperture. Use a dedicated 3.3 V LDO with ≥10 µF ceramic output capacitance, route VDD12 on inner layer with separate ground return, and connect the exposed thermal pad to a solid internal ground plane with ≥6 thermal vias. Avoid routing high-speed digital traces under the sensor body.
Does PASCO2V01BUMA1 require factory calibration after soldering or reflow?
No - the device ships fully calibrated and retains calibration through standard reflow profiles (JEDEC J-STD-020). Its ABOC feature automatically corrects baseline drift during normal operation using ambient air exposure cycles, eliminating post-soldering recalibration or field zeroing procedures.
How does the sensor handle condensation or high-humidity environments?
The sensor operates reliably at 0–85% RH non-condensing. Condensation must be avoided per specification - if ambient dew point exceeds housing temperature, use conformal coating on PCB (excluding gas inlet) and implement enclosure-level desiccant or active ventilation. No internal heating element is present.
Can PASCO2V01BUMA1 be used for outdoor CO₂ monitoring?
It is rated for 0–50 °C ambient operation and 750–1150 hPa pressure range, supporting altitudes up to ~3000 m. However, its IP rating is not specified for outdoor exposure - use only in protected enclosures with filtered gas inlet; avoid direct rain, dust ingress, or UV exposure to maintain 10-year lifetime and accuracy spec.
PASCO2V01BUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Carbon Dioxide (CO2)
- Oxygen Range:
- -
- Accuracy:
- -
- Output:
- I2C, PWM, UART
- Operating Temperature:
- 0°C ~ 50°C
- Voltage - Supply:
- 3V ~ 3.6V, 10.8V ~ 13.2V
- Current - Supply:
- 6.1mA
PASCO2V01BUMA1 FAQ
1.How can I place an order for PASCO2V01BUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PASCO2V01BUMA1 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 PASCO2V01BUMA1 reliable?
The price and inventory of PASCO2V01BUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PASCO2V01BUMA1 is usually 5 days.
3.What payment methods are accepted for PASCO2V01BUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PASCO2V01BUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PASCO2V01BUMA1?
PASCO2V01BUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PASCO2V01BUMA1 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 PASCO2V01BUMA1?
For technical support, including PASCO2V01BUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PASCO2V01BUMA1 requirements.
6.How does Aetrix verify that PASCO2V01BUMA1 is sourced from the original manufacturer or authorized distributors?
All PASCO2V01BUMA1 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 PASCO2V01BUMA1 meets industry standards.
7.What is the process for return or replacement of PASCO2V01BUMA1?
All PASCO2V01BUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with PASCO2V01BUMA1, 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 PASCO2V01BUMA1 part is unused and in its original packaging.
Return procedure for PASCO2V01BUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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