STPMS2H-PUR - Dual-Channel 4 MHz Smart Sensor IC | STMicroelectronics
MPN： STPMS2H-PUR ✓ 啟用中STPMS2H-PUR 概覽
A smart sensor interface is a specialized analog front end that sits between physical sensors and a digital controller. Its functional hierarchy is sensor interface, analog front end, sigma-delta modulator, signal-conversion IC, and integrated circuit. By converting analog quantities into bit streams early in the signal chain, the STPMS2H-PUR supports compact sensing systems in which sensing, modulation, and digital processing are partitioned between analog and digital stages.
The STPMS2H-PUR provides two independent 1-bit modulator channels, a 4 MHz clock, and second-order sigma-delta modulation with embedded PGLNA sections. These features make it applicable to high-resolution sensing architectures where analog amplification and conversion must coexist in a compact package. The 16-VFQFN package includes an exposed pad and uses a 0.65 mm terminal pitch for high-density surface-mount assembly.
Its analog-to-digital conversion architecture employs second-order sigma-delta modulation rather than a conventional multi-bit SAR or flash converter. Two 1-bit output streams can be combined digitally to preserve resolution while limiting the analog output-node count. The embedded PGLNA blocks reduce the amount of separate gain-stage circuitry needed for low-level sensor signals, although gain settings and signal-chain limits should be confirmed against the manufacturer datasheet.
Typical uses include industrial condition monitoring, resistive or bridge-based sensing, compact pressure or position sensing, and low-power acquisition modules that feed a microcontroller or dedicated digital filter. The industrial temperature grade and surface-mount construction suit equipment intended for controlled industrial environments rather than extended automotive qualification.
When laying out a design, treat the exposed pad as a thermal and electrical connection to the PCB rather than a no-connect area. Keep analog inputs short, maintain the datasheet-specified input filtering and grounding topology, and provide local supply bypassing close to the package pins. Confirm gain, calibration, and output-data handling against the manufacturer documentation before production release.
直接替換替代品，適用於 STPMS2H-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： STPMS2H-PUR （相同外形與佔位） — 差異在於 Converter Architecture, Package.
STPMS2L-PUR
✅ 直接替換聯絡詢價
查看資料表 →STPMS2H-PUR 最大額定值與電氣特性
| Product Type | Smart sensor II sensor and detector interface IC |
| Converter Architecture | Dual-channel, second-order sigma-delta modulator |
| Channel Count | 2 channels |
| Digital Output Resolution | 1 bit per channel |
| Modulator Clock | 4 MHz |
| Embedded Analog Front End | Embedded PGLNA |
| Input Type | Analog |
| 輸出類型 | Digital |
| 供應電壓 | 5.5 V maximum |
| Nominal Voltage | 5 V |
| 封裝 | 16-VFQHN (HVQCCN), 4 x 4 mm, exposed pad |
| Terminal Count | 16 terminals |
| Terminal Pitch | 0.65 mm |
| Package Shape | Square |
| 安裝類型 | Surface mount |
| Temperature Grade | Industrial |
| Maximum Operating Temperature | 85 °C |
| Lead-Free Status | Lead-free |
| Packaging | Tape and reel |
STPMS2H-PUR square 腳位配置指南
STPMS2H-PUR（square 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： STPMS2H-PUR.
請參閱 資料表 以查看完整腳位配置。
典型應用
STPMS2H-PUR 適用於 6 應用s: Industrial Condition Monitoring, Resistive Bridge Sensor Acquisition, Low-Power Portable Sensing Module, Precision Pressure Sensor Interface, Position and Displacement Measurement, Compact Data-Acquisition Front End.
Industrial Condition Monitoring
The STPMS2H-PUR is suitable for compact industrial condition-monitoring front ends because it combines two analog-input channels with embedded PGLNA sections and 1-bit, second-order sigma-delta outputs clocked at 4 MHz. Each channel can condition and digitize a low-level transducer signal close to the sensing element, reducing analog trace length and analog-noise exposure. A downstream controller can then decode and filter the bit streams. The 16-VFQHN package with an exposed pad supports dense, surface-mount instrument designs, while the industrial grade and 85 °C maximum temperature suit controlled factory environments. Verify the permitted excitation, gain range, and calibration method for the selected resistive, piezoelectric, or bridge sensor before committing the analog design.
推薦
Resistive Bridge Sensor Acquisition
The STPMS2H-PUR fits low-level bridge-sensor acquisition where two differential sensing paths must be digitized close to the transducer. Its embedded PGLNA blocks provide analog gain ahead of the two second-order, 1-bit sigma-delta modulators, limiting the amount of separate gain amplification required. The 4 MHz modulator clock supports digital reconstruction when paired with a suitable decimation filter in an STM32-class controller. Because the supplied data does not enumerate input common-mode range or PGLNA gain steps, the bridge excitation and operating point must be checked against the manufacturer datasheet. Short, symmetric routing from the bridge to the package is essential so that the modulator does not acquire board-level differences as sensor errors.
推薦
Low-Power Portable Sensing Module
The STPMS2H-PUR can be used in battery-powered sensing modules where analog conversion must be integrated without a separate multi-bit converter. Two 1-bit output streams reduce the number of digital output nodes, while the embedded PGLNA sections bring conditioned sensor signals into the modulation stage. A microcontroller such as the STM32F072 family can decode and low-pass-filter the data, allowing useful updates to be generated only when needed. The 4 x 4 mm 16-VFQHN footprint leaves board area for the power system and radio or communications section. Actual battery-life performance depends on the selected duty cycle, analog bias conditions, and digital filter bandwidth, none of which is quantified in the supplied excerpts.
推薦
Precision Pressure Sensor Interface
The STPMS2H-PUR provides a compact analog-to-digital front end for pressure transducers whose output must be captured close to the sensing element. The embedded PGLNA can condition the relatively small sensor signal before the second-order sigma-delta modulators generate 1-bit data streams, allowing a digital controller to perform scaling, compensation, and temperature correction. Its dual-channel architecture can support two related quantities, such as pressure and temperature, within one compact package. The industrial temperature grade and surface-mount construction fit pressure-monitoring instruments and embedded equipment. Before schematic release, confirm input bias current, permitted signal range, gain configuration, self-calibration behavior, and the effect of exposed-pad grounding on accuracy using the manufacturer datasheet.
推薦
Position and Displacement Measurement
The STPMS2H-PUR is applicable to analog position and displacement systems that require two synchronized measurement channels. Both embedded PGLNA blocks feed 1-bit, second-order sigma-delta modulators operating at 4 MHz, which can be decoded and filtered digitally to recover the physical displacement signal. Locating the conversion stage beside the resistive or inductive sensing element reduces sensitivity to interference over long analog interconnects. The 16-VFQHN package also permits reuse of the same acquisition architecture across multiple board variants. Design checks should include excitation strategy, permissible input swing, channel-to-channel synchronization, and gain settling. Verify those electrical constraints in the manufacturer documentation because they are not quantified in the supplied distributor excerpts.
推薦
Compact Data-Acquisition Front End
The STPMS2H-PUR can form the sensor-input stage of a compact multi-channel data-acquisition front end. Two analog channels are amplified by embedded PGLNA sections and converted into 1-bit sigma-delta streams, while an external microcontroller performs digital decimation, scaling, and buffering. This partitioning keeps the analog section compact and moves most numerical processing into digital circuitry where calibration tables and filters are easier to update. The 4 MHz clock and 1-bit outputs provide clearly identified conversion characteristics for system-level clocking and filter design. The exposed-pad package requires careful PCB thermal and grounding design, and supply decoupling must be placed close to the device. Confirm input bandwidth, clock tolerance, output timing, and calibration sequence against the manufacturer datasheet.
推薦
推薦產品摘要
工程參考資料，適用於 STPMS2H-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 | STPMS2L-PUR |
|---|---|---|
| Package | 16-VFQHN (HVQCCN), 4 x 4 mm, exposed pad | Same-family package listed as HVQCCN |
| Brand | STMicroelectronics | STMicroelectronics |
| Product Family | Smart Sensor II | Smart Sensor II |
| Reference Price | $3.630 as of 2026-10-28 | $3.630 as of 2026-10-28 |
主要差異化特點
- Dual-channel smart sensor conversion in one compact package (對比STPMS2L-PUR)
- Digital modulation reduces analog output-node count (對比STPMS2L-PUR)
- Industrial temperature coverage (對比STPMS2L-PUR)
設計說明
Route each analog input with a short, symmetrical path from the sensor or front-end network to the STPMS2H-PUR. Place the documented input filtering components directly beside the corresponding package pins, and avoid routing the analog signals beneath digital clocks, memory interfaces, or switching-node areas. Because the device uses a sigma-delta architecture, unequal trace lengths and parasitic coupling can appear as offset, gain error, or modulation of the recovered measurement.
Connect the exposed pad according to the manufacturer package land pattern and use it as the principal return path for the device. Provide a low-impedance ground connection and adequate copper area under the package while keeping sensitive analog returns away from noisy switching currents. The exposed pad is not an unused thermal-only feature: leaving it poorly connected can degrade noise performance, temperature behavior, and supply-reference stability.
Place the required supply bypass capacitors immediately next to the device's supply and ground pins, and keep their current loops as small as possible. The verified 5.5 V maximum supply rating provides the upper operating limit, not a recommendation to operate at 5.5 V. Confirm the permitted supply range, sequencing requirements, and whether the PGLNA references are derived internally or externally before finalizing the power tree.
合規資訊
The verified listings identify the STPMS2H-PUR as lead-free. RoHS, REACH, halogen-free, and conflict-minerals declarations were not present in the supplied excerpts, so they are recorded as unknown rather than inferred.
