CS5460-BS - 24-Bit Power/Energy ADC | Cirrus Logic
MPN： CS5460-BS ✓ 啟用中CS5460-BS 概覽
A sigma-delta ADC is a voltage-to-digital converter category that uses continuous-time oversampling and digital filtering to obtain high resolution from relatively low-precision internal converters. Within the broader hierarchy of data-converter ICs, ADC and DAC devices convert analog signals for digital processing, while the CS5460-BS adds specialized arithmetic for real power and energy measurements instead of serving only as a general-purpose waveform converter.
The key characteristics begin with a 24-bit conversion resolution, one analog input, and a sigma-delta architecture optimized for metering signals. The manufacturer datasheet also identifies an energy-data linearity specification of 0.1% of reading over a 1000:1 dynamic range. On-chip calculations provide energy, I×V, IRMS, VRMS, and energy-to-pulse-rate functions, reducing the amount of external signal processing required in a typical single-phase metering channel.
The CS5460 architecture is intended to support accurate single-phase, two-wire or three-wire power-metering systems. Its serial interface allows calculated measurements and status information to be transferred to a host controller, while the integrated calculation functions allow voltage and current samples to be converted into useful power quantities close to the analog input stage. This integration can simplify board partitioning and help maintain consistent measurement scaling across voltage and current channels.
Typical uses include residential electricity meters, utility revenue meters, industrial energy monitors, smart-grid endpoint equipment, and compact power-measurement modules. The device is also suited to systems that need accumulated energy as a pulse output rather than only a serial data stream. Its bi-directional measurement capability is valuable for installations where power flow can reverse, such as distributed generation or energy-storage monitoring.
The main design consideration is analog signal conditioning. Current-sensor outputs and voltage-divider signals must remain within the device's specified input range, while filtering and component selection must preserve the metering accuracy required by the end product. Follow the application circuit and component recommendations in the manufacturer datasheet, and evaluate line-voltage safety requirements independently of the integrated measurement functions.
This product page consolidates the CS5460-BS functional description, packaging information, application guidance, comparison fields, and verified substitution research. It also separates directly documented performance claims from parameters requiring an engineering review, helping designers establish the right measurement architecture before committing the 24-SSOP footprint to a PCB.
直接替換替代品，適用於 CS5460-BS — 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。
此產品無可直接替換的替代品。
申請替代品CS5460-BS 最大額定值與電氣特性
| Device Type | Single-phase bi-directional power/energy IC |
| ADC Resolution | 24 bit |
| Input Count | 1 input |
| ADC Architecture | 1 sigma-delta converter |
| Integrated ADC Count | 2 delta-sigma ADCs |
| On-Chip Functions | Energy, I×V, IRMS, VRMS, and energy-to-pulse-rate conversion |
| Energy Data Linearity | 0.1% of reading |
| Linearity Dynamic Range | 1000:1 |
| 介面類型 | Serial |
| 封裝 | 24-SSOP |
| Package Pin Count | 24 pins |
| 安裝類型 | Surface mount |
| Measurement Direction | Bi-directional |
| Power Measurement | Instantaneous power and energy |
| RMS Measurement | IRMS and VRMS |
| Metering Compliance Reference | IEC 687/1036 and JIS |
CS5460-BS 24 pins 腳位配置指南
CS5460-BS（24 pins 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： CS5460-BS.
請參閱 資料表 以查看完整腳位配置。
典型應用
CS5460-BS 適用於 6 應用s: Residential Electricity Meter, Smart-Grid Endpoint Equipment, Industrial Energy Monitor, Distributed Generation Monitor, Energy-to-Pulse Accumulator, Compact Power-Measurement Module.
Residential Electricity Meter
The CS5460-BS is suited to single-phase residential electricity meters because its two delta-sigma ADCs and on-chip calculations provide energy, instantaneous I×V power, IRMS, and VRMS from voltage and current sensing signals. The manufacturer specifies 24-bit resolution and 0.1% energy-data linearity of reading over a 1000:1 dynamic range, allowing the meter to process a broad operating range. A host controller can read results through the serial interface, while the pulse-output function can support an energy accumulator. Final meter accuracy still depends on current-sensor and voltage-divider calibration.
推薦
Smart-Grid Endpoint Equipment
The CS5460-BS can form the measurement front end of a smart-grid endpoint that monitors single-phase load energy and communicates calculated values to a metering controller. Its integrated power, energy, and RMS calculations reduce the computational burden on the host and shorten the analog-to-digital processing path. Bidirectional operation is valuable where a customer installation can export power to the grid. Designers should match the current and voltage sensing paths to the ADC input requirements, preserve low-noise reference behavior, and follow the manufacturer calibration sequence before enabling revenue-related measurements.
推薦
Industrial Energy Monitor
For industrial equipment monitoring, the CS5460-BS provides a dedicated path for measuring real power and energy rather than relying on a general-purpose waveform ADC. Its 24-bit sigma-delta conversion, 0.1% energy-data linearity over a 1000:1 dynamic range, and integrated IRMS and VRMS calculations support compact monitoring modules. Such a module can expose live demand through its serial interface and accumulate consumption through the energy-to-pulse-rate function. Sensor selection, isolation, harmonic content, and environmental calibration determine how closely module performance approaches the component’s specified energy linearity.
推薦
Distributed Generation Monitor
The bidirectional measurement architecture of the CS5460-BS fits distributed-generation and energy-storage installations where power may flow from the load into the grid. Integrated energy, I×V, IRMS, and VRMS functions let the controller distinguish direction and magnitude using synchronized voltage and current measurements. The 24-bit sigma-delta front end and 1000:1 energy-linearity dynamic range support metering across widely changing operating conditions. For storage systems, synchronize the acquisition, define sign conventions in firmware, and validate the zero-crossing and calibration behavior across current reversal and low-power operating points.
推薦
Energy-to-Pulse Accumulator
The CS5460-BS includes an energy-to-pulse-rate conversion function for meters that must drive an impulse or accumulation mechanism from calculated energy. This allows the metering IC to provide a pulse-rate representation in addition to serial data, supporting both electronic communication and pulse-based totalization. The same 24-bit conversion path and integrated energy calculation provide the underlying measurement consistency. Verify pulse scaling, output behavior, calibration coefficient, maximum pulse rate, and electrical isolation in the complete meter design rather than assuming the host performs every accumulation function.
推薦
Compact Power-Measurement Module
The CS5460-BS can serve as the core of a compact power-measurement module that accepts voltage and current signals and reports calculated electrical quantities over a serial interface. Its integration of two delta-sigma ADCs with energy, real-power, and RMS calculations reduces the number of separate analog and processing blocks required. The 24-SSOP package supports board-space savings, although careful layout remains necessary to preserve measurement performance. Module developers must document sensor excitation, gain, filtering, calibration, isolation, interface protocol, and environmental limits for downstream integrators.
推薦
工程參考資料，適用於 CS5460-BS — 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 |
|---|---|
| Package | 24-SSOP |
| Brand | Cirrus Logic Inc. |
| Device Type | Single-phase bi-directional power/energy IC |
| ADC Resolution | 24 bit |
| Input Count | 1 input |
| ADC Architecture | Sigma-delta; two integrated delta-sigma ADCs |
| Energy Data Linearity | 0.1% of reading over 1000:1 dynamic range |
| On-Chip Calculations | Energy, I×V, IRMS, VRMS, and energy-to-pulse-rate conversion |
| Interface | Serial |
| Metering Standards Reference | IEC 687/1036 and JIS |
主要差異化特點
- Dedicated energy-processing functions reduce external calculation overhead (對比CS5460A-BSZ)
- Wide metering operating range (對比General-purpose 24-bit ADCs)
- Bidirectional single-phase measurement (對比Unidirectional energy-measurement ADCs)
設計說明
Follow the manufacturer application circuit for analog-input routing and component placement. Keep voltage and current sensing paths compact, route them away from high-current switching nodes, and use a stable reference and clean supply arrangement. Place input filtering close to the relevant pins where the datasheet layout shows it, and avoid adding long copper paths that increase noise pickup or create coupling between the voltage and current channels.
Do not treat the specified 0.1% energy-data linearity as total meter accuracy. Current-sensor offset, gain error, voltage-divider tolerance, reference variation, filter mismatch, calibration, and PCB leakage all contribute to end-product uncertainty. Establish calibration coefficients across the intended load range, verify zero-current and reversal behavior, and repeat measurements under realistic temperature and supply conditions before releasing production hardware.
Use the manufacturer’s recommended clock, reset, decoupling, filtering, and analog-input networks without substituting equivalent-looking values without checking their effects. Sigma-delta converters can support high resolution while remaining sensitive to out-of-band noise, unstable references, or poorly decoupled supply rails. Validate the implemented circuit with the specified analog bandwidth and digital interface timing rather than relying only on nominal converter resolution.
合規資訊
The manufacturer datasheet references IEC 687/1036 and JIS metering compliance. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status are not established by the cited product information.
