MCP3909ISS - 16-Bit Energy Metering AFE | Microchip
部品番号: MCP3909ISS ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.1385 | $3.14 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MCP3909ISS 概要
An energy-metering AFE is a signal-chain IC that measures voltage and current channels and converts their analog inputs into digital information for energy calculation. In the broader hierarchy, an energy-metering IC belongs to the AFE and power-measurement semiconductor category, where accurate current and voltage acquisition supports utility meters, load monitoring, industrial energy management, and building-energy systems. The MCP3909 is designed around the IEC 62053 international metering specification and also references legacy IEC 1036, IEC 61036, and IEC 687 requirements in the verified data.
The MCP3909 combines simultaneous serial access to ADC channels with multiplier output data and a frequency output proportional to average active real power. These features allow a host processor to retrieve measurements while the hardware provides a convenient active-power pulse indication. The 16-bit ADC architecture is intended for metering applications where measurement resolution and energy accuracy are more important than low-cost general-purpose signal acquisition.
Typical uses include single-phase utility meters, residential energy monitors, industrial submeters, appliance energy measurement, and embedded power-monitoring equipment. In these systems, the AFE accepts voltage and current information, performs analog-to-digital conversion, and supplies measurement data through its serial interface. The active-power output can provide a low-frequency measurement signal for meter calibration, energy accumulation, or system monitoring.
The principal design considerations are input filtering, calibration, reference stability, signal integrity, and correct implementation of the current and voltage channels. Designers should follow the manufacturer datasheet for the exact pin functions, recommended external components, analog input limits, digital interface timing, and calibration procedure. The verified web data confirms the 24-SSOP package and tube packaging information, while some detailed electrical limits and pin-level details require datasheet confirmation.
This page combines verified manufacturer and distributor information with application guidance and design considerations. It also identifies the MCP3909 as a single-phase 24-SSOP energy-metering IC with SPI connectivity, active-power pulse output, a 16-bit ADC, and support for IEC 62053-oriented metering designs.
ドロップイン代替品: MCP3909ISS — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
MCP3909T-I/SS
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP3909ISS 最大定格＆電気的特性
| Product Type | Single-phase energy-metering AFE IC |
| ADC Resolution | 16 bit |
| Supply Voltage Range | 4.5 V to 5.5 V |
| 電源電流 | 2.3 mA |
| Input Impedance | 390 kOhm |
| Measurement Error | 0.1% |
| インターフェース | SPI |
| Active Power Output | Frequency output proportional to average active real power |
| Measurement Channels | Voltage and current measurement channels |
| Metering Standard | IEC 62053 international energy metering specification |
| Legacy Standards Referenced | IEC 1036, IEC 61036, and IEC 687 |
| パッケージ | 24-SSOP, 0.209 inch / 5.30 mm width |
| Packaging | Tube |
| 実装タイプ | Surface mount |
| Application | Single-phase energy metering |
| Digital Data Access | Simultaneous serial access to ADC channels and multiplier output data |
MCP3909ISS 24-ssop, 0.209 inch / 5.30 mm width ピン配置ガイド
MCP3909ISS (24-ssop, 0.209 inch / 5.30 mm width パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: MCP3909ISS.
詳細は データシート をご参照ください。
主な用途
MCP3909ISS の用途: 6 件s: Single-Phase Residential Utility Meter, Industrial Submetering, Residential Energy Monitor, Appliance Energy Measurement, Building Energy Management, Power-Quality Monitoring Front End.
Single-Phase Residential Utility Meter
The MCP3909ISS fits a residential meter because it combines a 16-bit energy-metering ADC with voltage and current measurement channels, SPI access, and an active-power frequency output. A host controller can read converted channel data and accumulate energy while the frequency output provides a measurement signal for system monitoring. The verified 4.5 V to 5.5 V supply range and 0.1% stated measurement error are suitable starting points for accurate single-phase metering. Final accuracy depends on current and voltage sensors, analog filtering, calibration, reference stability, and compliance testing.
おすすめ
Industrial Submetering
Use the MCP3909ISS as the measurement front end in an industrial submeter when the equipment must acquire voltage and current information for energy accounting. Its 16-bit ADC and simultaneous serial access to ADC channels support synchronized digital readings, while the active-power pulse output offers a hardware indication of average active real power. The 390 kOhm input impedance is a verified parameter that must be considered with the sensor network and filtering choices. Designers should verify industrial temperature, EMC, isolation, and regulatory requirements separately.
おすすめ
Residential Energy Monitor
The MCP3909ISS can serve as the metering AFE in a residential energy monitor that reports load consumption to a display, gateway, or communications module. The SPI interface allows a host processor to retrieve ADC channel information and multiplier output data, while the frequency output proportional to average active real power can assist with energy accumulation or calibration workflows. The 2.3 mA supply current is useful for low-power meter electronics, but the complete system budget includes sensors, host MCU, communications, and regulators.
おすすめ
Appliance Energy Measurement
For appliance energy measurement, the MCP3909ISS can acquire the voltage and current channels required by an embedded energy-calculation system. Its 16-bit conversion resolution and 0.1% stated measurement error are relevant when the appliance load varies across a broad operating range. The active-power frequency output provides a convenient signal for an energy accumulator or measurement verification path. Engineers should optimize the current-sensor input network, maintain low-noise analog routing, and calibrate across expected voltage, current, and temperature conditions.
おすすめ
Building Energy Management
The MCP3909ISS is appropriate for a building energy-management node that measures one load or branch circuit and reports consumption to a building controller. Simultaneous serial access to ADC channels allows the controller to coordinate voltage and current readings, while the active-power output can provide a convenient power-proportional indication. The 4.5 V to 5.5 V supply range simplifies integration with regulated 5 V meter electronics. In deployed products, validate the complete signal chain for line transients, temperature drift, EMC, safety isolation, and applicable metering standards.
おすすめ
Power-Quality Monitoring Front End
The MCP3909ISS can form part of a power-monitoring front end when the system needs simultaneous voltage and current acquisition for energy or load analysis. The SPI interface supports integration with a digital controller, and the active-power frequency output can be used as a reference measurement channel for system-level algorithms. The device is an energy-metering AFE rather than a complete power-quality analyzer, so harmonic, transient, and waveform requirements need separate verification. Preserve analog signal integrity and follow the manufacturer input-conditioning recommendations.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MCP3909ISS — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MCP3909T-I/SS |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 24-SSOP | 24-SSOP |
| Product Type | Single-phase energy-metering AFE IC | Related MCP3909 energy-metering IC listing |
| Interface | SPI | Related MCP3909 family listing; exact interface verification required |
主な差別化要因
- Dedicated single-phase metering function （vs MCP3909T-I/SS)
- 16-bit measurement resolution （vs MCP3909T-I/SS)
- Integrated active-power indication （vs MCP3909T-I/SS)
- SPI-connected measurement data （vs MCP3909T-I/SS)
設計ノート
Keep the MCP3909ISS analog voltage and current inputs short, shielded from switching nodes, and surrounded by a quiet ground return. The verified 390 kOhm input impedance should be included in the complete source-impedance and filter design. Place input-network components close to the device and follow the manufacturer datasheet for component values, grounding, and maximum input conditions.
Separate the SPI and digital-control traces from sensitive analog inputs, especially when the meter also contains switching power supplies or communication transceivers. Use a compact analog section with continuous ground-plane reference, minimize loop area around sensor and filtering networks, and provide decoupling close to the 4.5 V to 5.5 V supply pins. Confirm the final layout against the official MCP3909 recommended application circuit.
Do not assume that a similar MCP3909 ordering suffix is a drop-in replacement without checking the complete Microchip datasheet. Verify package pin numbering, temperature grade, calibration settings, register behavior, SPI timing, and electrical limits. The verified data supports the MCP3909 family's energy-metering function but does not provide a complete pinout or suffix-to-suffix equivalence matrix.
The verified supply-current value is 2.3 mA, but the complete power budget must also include the regulator, sensors, host controller, communications, and output circuitry. Use a regulated 5 V source within the stated 4.5 V to 5.5 V range and account for startup, transient, and tolerance requirements. Estimate rail dissipation only from measured or specified loads and verify it against the final supply design.
コンプライアンス情報
The verified data identifies support for the IEC 62053 international energy metering specification and references legacy IEC 1036, IEC 61036, and IEC 687. RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-mineral status were not provided and therefore remain unknown.
