MCP3909ISS - 16-Bit Energy Metering AFE | Microchip
料号： MCP3909ISS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.1385 | $3.14 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MCP3909ISS 概述
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.
直接替换替代料： MCP3909ISS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MCP3909T-I/SS
✅ 直接替换📋 参考替代料（不在目录中）
MCP3909ISS 最大额定值与电气特性
| Product Type | Single-phase energy-metering AFE IC |
| ADC Resolution | 16 bit |
| Supply Voltage Range | 4.5 V to 5.5 V |
| 电源电流 | 2.3 mA |
| Input Impedance | 390 kOhm |
| Measurement Error | 0.1% |
| 接口 | 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 |
| 封装 | 24-SSOP, 0.209 inch / 5.30 mm width |
| Packaging | Tube |
| 安装类型 | 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 引脚配置指南
MCP3909ISS（24-ssop, 0.209 inch / 5.30 mm width 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： MCP3909ISS.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MCP3909ISS 适用于 6 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MCP3909ISS ——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 | 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 |
关键差异点
- Dedicated single-phase metering function （对比 MCP3909T-I/SS)
- 16-bit measurement resolution （对比 MCP3909T-I/SS)
- Integrated active-power indication （对比 MCP3909T-I/SS)
- SPI-connected measurement data （对比 MCP3909T-I/SS)
设计说明
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.
合规信息
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.
