HSPPAD042A - 300-1100 hPa I2C MEMS Pressure Sensor | Alps Alpine
N.º de pieza: HSPPAD042A ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $1.69 | $1,69 |
| 10 | $1.52 | $15,20 |
| 100 | $1.27 | $127,00 |
| 500 | $1.1 | $550,00 |
| 1.000 | $1.03 | $1.030,00 |
HSPPAD042A Descripción general
A digital pressure sensor is an electronic component that converts absolute gas pressure into a calibrated digital output via an integrated MEMS sensing element and an on-chip analog front-end plus ADC. Pressure sensors sit within the broader transducer hierarchy: transducer -> sensor -> pressure sensor -> barometric/absolute pressure sensor -> board-mount pressure sensor. The HSPPAD042A specifically targets barometric pressure measurement, the same form of pressure used in weather forecasting and altitude estimation, where the sensor measures pressure relative to an internal vacuum reference.
Key features of the HSPPAD042A include a Philips I2C-BUS Specification v2.1 / NXP UM10204 Rev.03 compliant slave interface at fixed address 1001000x (Write:0, Read:1), an operating temperature range of -40C to +85C, and a RoHS-compliant surface-mount package. The part targets mobile, wearable, and IoT designs that require accurate barometric readings without the layout burden of an analog front-end. Pressure resolution and conversion timing are controlled via the I2C interface, allowing the host MCU to manage power consumption by issuing one-shot conversions.
Typical applications include barometric altitude estimation in drones and wearables, weather station modules, HVAC air-flow monitoring, indoor navigation pressure references, and altitude-aware GPS augmentation in smartphones. The 1.8 uA quiescent current allows years of operation on a coin cell when paired with duty-cycled wake-up, while the small 2 x 2.5 mm SMD-10P footprint allows direct integration on dense IoT boards.
When designing with this sensor, place decoupling capacitors (typically 100 nF ceramic) as close as possible to the VDD pin and route the I2C SDA/SCL traces as short as possible with pull-up resistors in the 2.2 kOhm to 10 kOhm range. Avoid placing the sensor directly over heat-generating components, as thermal gradients introduce pressure offset errors. According to the Alps Alpine datasheet, the I2C slave address is fixed at 0x48 (Write) / 0x49 (Read) and the bus supports standard and fast modes per NXP UM10204.
This page synthesizes distributor pricing from LCSC and Mouser, drop-in alternatives from same-family Alps Alpine pressure sensors, and practical design notes not aggregated on the manufacturer product page. Engineers evaluating barometric sensor options will find parametric comparisons and design considerations specific to the HSPPAD042A here.
Alternativas directas para HSPPAD042A — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con HSPPAD042A (mismo factor de forma y huella) — difiere en Manufacturer, Output Type, Package, Pressure Range, RoHS Status.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
HSPPAD038A
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
HSPPAD042B
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
HSPPAD042A_EVABOARD
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
HSPPAD042A Valores máximos y características eléctricas
| Tipo de sensor | Digital Pressure Sensor (Barometric, Absolute) |
| Pressure Range | 300 hPa to 1100 hPa |
| Tensión de alimentación | 1.7 V to 3.6 V |
| Typical Supply Current | 1.8 uA |
| Interfaz | I2C (Philips I2C-BUS v2.1 / NXP UM10204 Rev.03 compliant) |
| I2C Slave Address | 0x48 (Write) / 0x49 (Read), 1001000xb |
| Temperatura de funcionamiento | -40C to +85C |
| Encapsulado | SMD-10P, 2 x 2.5 mm |
| Tipo de montaje | Surface Mount |
| Technology | MEMS |
| Tipo de salida | Digital (I2C) |
| Estado RoHS | Compliant |
| Pressure Type | Absolute |
| Manufacturer | Alps Alpine (Alps Electric Co., Ltd.) |
Guía de configuración de pines de HSPPAD042A smd-10p, 2 x 2.5 mm
Configuración de pines para HSPPAD042A (encapsulado smd-10p, 2 x 2.5 mm). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para HSPPAD042A.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
HSPPAD042A es adecuado para 6 aplicacións: Drone Barometric Altitude Hold, Wearable Fitness Altimeter, Portable Weather Station Module, HVAC Air-Flow Pressure Monitor, Indoor Navigation Pressure Reference, IoT Altitude-Aware GPS Augmentation.
Drone Barometric Altitude Hold
The HSPPAD042A delivers barometric pressure data to the flight controller for altitude-hold PID loops in consumer and prosumer drones. Its 300 hPa lower limit covers flight altitudes up to roughly 9000 m, while the 1.8 uA typical supply current keeps total power draw negligible against the multirotor's main battery. The I2C interface allows single-shot conversions at 50-100 Hz, sufficient for tight altitude loops. Place the sensor port behind a foam wind-cover to suppress propeller-wash pressure transients that can destabilize the loop.
Recomendado
Wearable Fitness Altimeter
Wearable fitness bands and smartwatches use the HSPPAD042A to estimate elevation gain during hiking, stair climbing, and trail runs. The compact 2 x 2.5 mm SMD-10P package fits inside a wristband PCB, and the 1.8 uA quiescent current allows years of operation on a coin cell when paired with duty-cycled wake-up. According to the Alps Alpine datasheet, the internal temperature compensation removes the need for host-side second-order correction across -40C to +85C, simplifying firmware load. The fixed 0x48/0x49 I2C address is acceptable in single-sensor wearables.
Recomendado
Portable Weather Station Module
Hobbyist and prosumer weather stations integrate the HSPPAD042A to measure local barometric pressure and derive short-term weather-trend indicators. The 300-1100 hPa range covers all sea-level to high-altitude conditions, while the 1.7-3.6 V supply allows direct connection to a 3.3 V MCU rail. Per the Alps Alpine datasheet, the I2C interface supports standard and fast modes per NXP UM10204, enabling fast bus sharing with other peripherals. Pair the sensor with an LCD display module and a humidity sensor for a complete desktop weather station.
Recomendado
HVAC Air-Flow Pressure Monitor
Commercial HVAC systems use the HSPPAD042A to measure duct static pressure for filter-load detection and airflow balancing. The device's 1.8 uA quiescent current is negligible compared to the HVAC controller's total consumption, and the wide -40C to +85C range covers rooftop and basement installations. According to the Alps Alpine datasheet, the digital I2C output eliminates the analog front-end noise that plagues low-pressure bridge-sensor designs. Tap the sensor into the duct with a pneumatic Pitot tube and feed pressure data to the building-management system over Modbus or BACnet.
Recomendado
Indoor Navigation Pressure Reference
Smartphone and indoor-mapping applications use the HSPPAD042A as a barometric floor-detection reference for vertical position. By fusing accelerometer and pressure data, the host MCU can determine which floor of a building the user is on with +/-1 floor accuracy. The 2 x 2.5 mm SMD-10P footprint fits inside any smartphone mainboard, and the fixed 0x48/0x49 I2C address leaves the host's other I2C peripherals unaffected. Per the Alps Alpine datasheet, the sensor's low 1.8 uA current makes it acceptable for always-on duty cycling.
Recomendado
IoT Altitude-Aware GPS Augmentation
GPS modules in IoT asset trackers use the HSPPAD042A to provide altitude-augmentation data that improves vertical accuracy from tens of meters (raw GPS) to single-digit meters. The sensor's 1.7-3.6 V supply matches the 3.3 V rails common in cellular IoT boards, and the I2C interface is bus-shareable with the GPS module. According to the Alps Alpine datasheet, the device's low noise floor produces stable altitude reads even in the presence of engine vibration when mounted in vehicle trackers. Combine barometric altitude with GPS ephemeris data for the cleanest 3D positioning fix.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para HSPPAD042A — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | HSPPAD038A | HSPPAD042B | HSPPAD042A_EVABOARD |
|---|---|---|---|---|
| Package | SMD-10P, 2 x 2.5 mm | SMD-10P, 2 x 2.5 mm - same | SMD-10P, 2 x 2.5 mm - same | SMD-10P, 2 x 2.5 mm (on EVB PCB) |
| Brand | Alps Alpine | Alps Alpine | Alps Alpine | Alps Alpine |
| Pressure Range | 300 hPa to 1100 hPa | 300 hPa to 1100 hPa | 300 hPa to 1100 hPa | 300 hPa to 1100 hPa (same die) |
| Supply Voltage | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| Typical Supply Current | 1.8 uA | 1.8 uA | 1.8 uA | 1.8 uA |
| Interface | I2C (0x48/0x49) | I2C | I2C (0x48/0x49) | I2C (0x48/0x49) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Technology | MEMS | MEMS | MEMS | MEMS |
| Pressure Type | Absolute | Absolute | Absolute | Absolute |
Diferenciadores clave
- Wide pressure range covering sea level to high altitude (frente a HSPPAD038A)
- Low quiescent current for battery-powered designs (frente a HSPPAD042A_EVABOARD)
- Factory revision B variant available for supply continuity (frente a HSPPAD042B)
Notas de diseño
Place a 100 nF decoupling capacitor as close as possible to the VDD pin and route the I2C SDA/SCL traces as short as possible to minimize bus capacitance. Use 2.2 kOhm to 10 kOhm pull-up resistors on SDA and SCL, sized to balance rise-time against current draw at the chosen I2C clock rate. According to the Alps Alpine datasheet, the SMD-10P package should be oriented with pin 1 indicator matching the silkscreen mark on the PCB to avoid mirror-image soldering.
Avoid placing the HSPPAD042A directly over heat-generating components such as PMICs, inductors, or display drivers. Thermal gradients across the sensor die introduce pressure-offset errors that can shift altitude readings by tens of meters. According to the Alps Alpine datasheet, the device includes internal temperature compensation over -40C to +85C, but rapid localized heating still appears as an apparent pressure transient. Provide a thermal break (copper keep-out zone) around the sensor port for best results.
Do not assume the I2C address is configurable - the HSPPAD042A uses a fixed 0x48 (Write) / 0x49 (Read) address per Alps Alpine datasheet. If the host MCU shares the bus with another 0x48/0x49 device, add an I2C bus multiplexer or select a sensor variant with a configurable address. Also note that the device requires a settling time after power-on before the first valid conversion; consult the datasheet for the exact t_POR specification before issuing a read command.
Información de cumplimiento
RoHS compliant per LCSC listing (C335994). Not AEC-Q100 qualified - not suitable for automotive safety-critical applications. REACH, halogen-free, and conflict-mineral declarations not present in the verified web data - contact Alps Alpine directly for compliance certificates.
