STPMS2L-PUR - Dual-Channel 1-Bit 4 MHz Smart Sensor | STMicroelectronics
MPN： STPMS2L-PUR ✓ 啟用中STPMS2L-PUR 概覽
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.
直接替換替代品，適用於 STPMS2L-PUR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STPMS2L-PUR （相同外形與佔位） — 差異在於 Converter Architecture, Package.
STPMS2H-PUR
✅ 直接替換聯絡詢價
查看資料表 →STPMS2L-PUR 最大額定值與電氣特性
| 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 |
| 輸出類型 | 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 |
| 封裝 | 16-QFN (4 x 4 mm) with exposed pad |
| 安裝類型 | Surface mount |
| Packaging | Tape and reel |
STPMS2L-PUR 16-qfn (4 x 4 mm) with exposed pad 腳位配置指南
STPMS2L-PUR（16-qfn (4 x 4 mm) with exposed pad 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： STPMS2L-PUR.
請參閱 資料表 以查看完整腳位配置。
典型應用
STPMS2L-PUR 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 STPMS2L-PUR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STPMS2H-PUR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Device Type | Smart Sensor II ASSP | Smart Sensor II device |
主要差異化特點
- Dual-channel sigma-delta measurement architecture (對比STPMS2H-PUR)
- Integrated analog measurement front end (對比STPMS2H-PUR)
- Purpose-built support for multiple current-sensing technologies (對比STPMS2H-PUR)
設計說明
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.
合規資訊
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.
