STPMS2L-PUR - Dual-Channel 1-Bit 4 MHz Smart Sensor | STMicroelectronics
料号： STPMS2L-PUR ✓ 量产中STPMS2L-PUR 概述
A smart sensor is an application-specific IC that combines analog signal conditioning with digital conversion and control functions. The STPMS2 belongs to the signal-chain hierarchy of sensor interface ICs, analog-to-digital converters, power-management ICs, and general-purpose semiconductors. Its primary role is to convert small analog current or voltage measurements into a digital bitstream that can be filtered or processed by a microcontroller, DSP, or dedicated digital engine.
The verified product information identifies two second-order sigma-delta modulators operating at 4 MHz, non-overlapping control-signal generation, and an embedded programmable-gain low-noise amplifier. A temperature-compensated band-gap reference, a low-drop supply-voltage stabilizer, and built-in self-test structures support accurate and dependable measurements. The supplied operating-voltage information specifies a 5.5 V supply limit, while the detailed operating range requires confirmation from the manufacturer datasheet.
Each analog measuring channel converts its conditioned input into a 1-bit digital stream. Second-order sigma-delta modulation shapes quantization noise away from the measurement band, allowing digital filtering to recover a useful low-resolution representation. The dual-channel architecture supports simultaneous or interleaved measurements where system accuracy, synchronization, channel matching, and interference rejection are important design considerations.
Typical uses include electronic power meters, energy-metering equipment, smart-grid sensing, industrial power monitoring, current-transformer signal conditioning, and systems using Rogowski coils, Hall sensors, or low-ohm shunt resistors. In these systems, the STPMS2 reduces the need for separate analog front-end blocks while providing a compact interface between analog sensors and digital processing.
A critical design step is to verify the complete pinout, exposed-pad connection, clocking method, digital output protocol, input range, gain settings, and recommended filtering directly against the manufacturer datasheet. The supplied search results establish the device family and package but do not expose the complete electrical table, so those implementation details must not be inferred from generic smart-sensor designs.
This page consolidates the verified manufacturer and distributor descriptions, distinguishes published facts from missing datasheet parameters, documents sourcing and package constraints, and provides practical application guidance. It is intended to help engineers identify the correct sensor interface and plan validation without presenting unverified electrical values as manufacturer specifications.
直接替换替代料： STPMS2L-PUR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STPMS2L-PUR （相同外形与封装尺寸） ——差异在于 Converter Architecture, Package.
STPMS2H-PUR
✅ 直接替换联系询价
查看数据手册 →STPMS2L-PUR 最大额定值与电气特性
| Device Type | Smart Sensor II application-specific standard product |
| Measuring Channels | 2 analog measuring channels |
| Converter Architecture | Second-order sigma-delta modulator per measuring channel |
| Digital Output | 1-bit |
| Modulator Clock | 4 MHz |
| Input Type | Analog |
| 输出类型 | Digital |
| Embedded Analog Stage | Programmable gain-low-noise amplifier (PGLNA) |
| Control Signal | Non-overlapping control signal generator |
| Reference | Temperature-compensated band-gap reference voltage generator |
| Supply Support | Low-drop supply voltage stabilizer |
| Self-Test | Built-in self-test (BIST) structures |
| Compatible Sensor Types | Rogowski coil, current transformer, Hall sensor, and shunt sensor |
| 封装 | 16-QFN (4 x 4 mm) with exposed pad |
| 安装类型 | Surface mount |
| Packaging | Tape and reel |
STPMS2L-PUR 16-qfn (4 x 4 mm) with exposed pad 引脚配置指南
STPMS2L-PUR（16-qfn (4 x 4 mm) with exposed pad 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： STPMS2L-PUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STPMS2L-PUR 适用于 6 应用s: Smart Energy Metering, Rogowski-Coil Power Monitoring, Current-Transformer Energy Acquisition, Industrial Motor Monitoring, Hall-Sensor Power Systems, Shunt-Based High-Current Sensing.
Smart Energy Metering
The STPMS2L-PUR fits smart energy meters because it combines two analog measuring channels with 4 MHz, second-order sigma-delta conversion in a compact 16-QFN 4 x 4 mm package. A current transformer or compatible shunt can feed the measurement chain, while the digital outputs are suitable for filtering and processing by a dedicated energy-measurement controller. The embedded PGLNA, band-gap reference, and BIST structures help consolidate the analog front end and support repeatable measurements. Designers must still verify the input range, gain configuration, clocking, and filter implementation against the manufacturer datasheet before setting the sensing thresholds.
推荐
Rogowski-Coil Power Monitoring
The STPMS2L-PUR is suitable for non-contact power monitoring when the application uses a Rogowski coil and requires digital current information. Its two measuring channels can support multi-channel measurement architectures, while the 4 MHz second-order sigma-delta modulators generate 1-bit streams for subsequent digital filtering. This arrangement avoids relying on a generic analog front end and can be especially useful where galvanic isolation and low insertion loss are important. The exact input sensitivity, gain range, phase response, and channel synchronization must be verified from the complete datasheet before the sensor output scale is calibrated.
推荐
Current-Transformer Energy Acquisition
The STPMS2L-PUR can serve as the measurement IC in energy-acquisition equipment using a current transformer. Its two analog channels provide a path for conditioning transformer-derived signals, and the 1-bit, 4 MHz sigma-delta architecture supports digital extraction of the measurement waveform. The embedded PGLNA and temperature-compensated band-gap reference are important for establishing consistent signal gain and reference behavior across the device. Engineers should confirm differential input limits, common-mode range, gain settings, and the required antialias and decimation filters before production deployment.
推荐
Industrial Motor Monitoring
The STPMS2L-PUR is appropriate for motor-current monitoring where an isolated Rogowski coil, Hall sensor, or shunt provides a suitable analog measurement signal. Its compact 16-QFN package preserves board area, and the dual-channel architecture can support measurements such as phase current and another plant variable when electrical ranges are compatible. The 4 MHz sigma-delta output allows digital filtering and firmware analysis without requiring a general-purpose ADC at the front end. Protection, isolation, operating-temperature, and electromagnetic-compatibility requirements must be evaluated independently because the supplied excerpts do not provide the complete electrical limits.
推荐
Hall-Sensor Power Systems
The STPMS2L-PUR can interface with Hall-current sensors in power systems because the STMicroelectronics product family explicitly supports Hall sensors. The programmable gain-low-noise amplifier handles the analog conditioning stage, and the two second-order sigma-delta modulators convert the conditioned signal into digital data. This combination is useful when a compact digital measurement path is preferred over a discrete analog-to-digital converter. Actual signal-chain usability depends on matching the Hall-sensor output swing and bandwidth to the unverified PGLNA limits, so prototype testing and datasheet confirmation remain necessary.
推荐
Shunt-Based High-Current Sensing
The STPMS2L-PUR supports power-line measurement architectures using low-ohm shunt resistors, according to the verified STMicroelectronics description. Conditioning the shunt voltage in the analog channel and converting it through a 4 MHz second-order sigma-delta modulator creates a compact measurement path for current-control or energy-monitoring systems. The approach can reduce component count, although the shunt amplifier range, common-mode capability, channel matching, and calibration behavior are not present in the supplied excerpts. Engineers should also budget PCB area for Kelvin routing and verify EMC behavior in the final power-conversion layout.
推荐
推荐产品汇总
工程参考数据： STPMS2L-PUR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STPMS2H-PUR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Device Type | Smart Sensor II ASSP | Smart Sensor II device |
关键差异点
- Dual-channel sigma-delta measurement architecture （对比 STPMS2H-PUR)
- Integrated analog measurement front end （对比 STPMS2H-PUR)
- Purpose-built support for multiple current-sensing technologies （对比 STPMS2H-PUR)
设计说明
Keep the sensor-signal path short and place input filtering and the exposed-pad connection exactly as directed by the manufacturer layout. The exposed pad is part of the thermal and electrical implementation, so its connection and via pattern must follow the official package drawing rather than a generic QFN land pattern. Signal and ground return paths should avoid sharing high-current switching routes.
Treat the two 1-bit outputs as a sampled sigma-delta signal chain and validate the digital decimation filter with the actual sensor, cable, and power-converter layout. Clock and data traces should be routed away from switch-node currents, while the analog input routing should minimize loop area. Do not assume that 1-bit output resolution represents the final measurement resolution; it depends on filtering and calibration.
Design the 5.5 V supply path with the low-drop internal supply stabilizer in mind, and verify the permitted operating range, quiescent current, and sequencing behavior against the complete datasheet. Place local supply decoupling close to the device using the manufacturer-recommended capacitance and voltage rating. Confirm that upstream supply noise and ripple remain within the limits required for measurement accuracy.
Do not substitute a part merely because it uses a 16-QFN package or belongs to the Smart Sensor II family. Pin assignments, input range, PGLNA gain, clocking, timing, and digital behavior must match the target PCB and application. The supplied search results do not expose the complete STPMS2H-PUR comparison, so qualification with that candidate requires the official L-versus-H data and a prototype-level compatibility review.
合规信息
The supplied search excerpts do not explicitly state the compliance result for RoHS, REACH, AEC-Q100, lead-free status, halogen-free status, or conflict-minerals compliance. No compliance conclusion was inferred.
