CS5451-BS - 16-Bit 6-Channel Sigma-Delta ADC | Cirrus Logic
MPN： CS5451-BS ✓ 啟用中CS5451-BS 概覽
An analog-to-digital converter, or ADC, converts continuously varying analog voltages into digital values that a microcontroller, DSP, or other digital controller can process. The CS5451 belongs to the sigma-delta ADC family, where oversampling and digital filtering are used to obtain high resolution in narrowband or low-frequency measurement systems. Within the component hierarchy, the CS5451 is a multichannel data-conversion IC and part of the broader ADC/DAC and power-management signal-chain ecosystem.
The CS5451-BS provides six analog input channels and 16-bit resolution in a single package. This integration reduces the number of separate converters required in systems that monitor several power-related signals. Its sigma-delta architecture is particularly useful when the measured signals are relatively slow-changing and require strong rejection of out-of-band noise. The integrated decimation filters help limit the bandwidth presented to the digital interface.
The 28-pin SSOP package supports compact circuit layouts in industrial control, metering, instrumentation, and embedded measurement systems. Because the converter is intended for the power measurement industry, its architecture prioritizes multichannel conversion and digital filtering rather than high-speed waveform capture. The 2.7 V to 3.5 V operating range places it in low-voltage digital and mixed-signal systems, where the host processor and supporting circuits commonly operate from a 3.3 V rail.
Designers should treat the analog inputs, reference circuitry, serial interface, and power connections as separate layout concerns. Place decoupling capacitors close to the supply pins, route analog signals away from switching nodes, and use a clean ground return for the converter. The selected input bandwidth, decimation setting, output data rate, and digital filter configuration should be evaluated together because changing any of them affects the effective measurement bandwidth and conversion timing.
This product page organizes the CS5451-BS electrical identity, package information, sourcing paths, comparison fields, and application guidance into one engineering reference. It also distinguishes verified drop-in alternatives from parts with different packages or insufficient compatibility information, helping designers avoid replacements that require PCB changes or interface redesign.
直接替換替代品，適用於 CS5451-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CS5451-BS 最大額定值與電氣特性
| Device Type | Six-channel analog-to-digital converter |
| Architecture | Sigma-delta |
| 解析度 | 16 bit |
| Number of Input Channels | 6 channels |
| Supply Voltage Range | 2.7 V to 3.5 V |
| 工作溫度範圍 | -40 °C to +85 °C |
| 封裝 | 28-pin SSOP |
| Package Type | SSOP |
| 腳位數 | 28 pins |
| 安裝類型 | Surface mount |
| Output Interface | Serial interface |
| Integrated Filters | Decimation filters |
| Target Application | Power measurement |
CS5451-BS ssop 腳位配置指南
CS5451-BS（ssop 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： CS5451-BS.
請參閱 資料表 以查看完整腳位配置。
典型應用
CS5451-BS 適用於 6 應用s: Multichannel Energy Metering, Industrial Power Monitoring, Instrumentation Signal Acquisition, Battery-Powered Monitoring, Building Automation Sensor Hub, Embedded Data Acquisition Controller.
Multichannel Energy Metering
The CS5451-BS is suitable for energy-metering boards that must acquire several analog measurement channels with consistent digital output. Its 6 integrated sigma-delta channels avoid a separate converter for every sensed quantity, while the 16-bit format supports detailed numerical representation of measured values. The decimation filters help reject out-of-band energy before data reaches the host processor. Operate the converter from the documented 2.7 V to 3.5 V range and preserve clean analog routing to achieve repeatable results.
Industrial Power Monitoring
The CS5451-BS can monitor several slowly changing power-related signals in industrial control equipment. Six 16-bit conversion channels provide a compact way to collect voltage, current, or auxiliary measurements into a common serial data path. Because this is a sigma-delta converter, its strength is narrowband measurement with digital decimation rather than high-speed transient capture. Keep analog traces short, isolate them from switching circuitry, and pair the converter with appropriate sensing and protection components.
Instrumentation Signal Acquisition
The CS5451-BS fits laboratory and process instrumentation requiring several synchronized or multiplexed measurement inputs. Its integrated decimation filters reduce unwanted frequency content before digital processing, and the serial interface supports connection to a controller or DSP. The 28-pin SSOP footprint helps preserve board area, while the 2.7 V to 3.5 V supply range simplifies integration with 3.3 V logic. Select external resistor networks and input networks according to the full-scale range required by the instrument.
Battery-Powered Monitoring
The CS5451-BS can support compact battery-powered sensing systems that monitor multiple low-frequency analog quantities. Six integrated channels reduce the amount of separate conversion hardware required, and the low-voltage operating range is compatible with common embedded power rails. Digital filtering makes the device particularly relevant when the measured variables change more slowly than the converter's selected output-data rate. Power-budget calculations should include the converter, reference circuitry, interface activity, and any external sensor loads.
Building Automation Sensor Hub
The CS5451-BS can serve as the measurement front end in a building-automation or environmental monitoring hub that accepts several sensor outputs. Its 16-bit delta-sigma channels suit temperature, pressure, and other bandwidth-limited analog measurements after suitable conditioning. The serial interface reduces the number of separate data buses in a multichannel design. Maintain separation between sensitive analog traces and digital or switching signals, and select filtering that balances response time against measurement noise.
Embedded Data Acquisition Controller
The CS5451-BS is appropriate for embedded data-acquisition controllers requiring six analog inputs and a compact mixed-signal package. Its integrated decimation filters can condition narrowband measurements before data is transferred over the serial interface to a microcontroller or DSP. The 2.7 V to 3.5 V operating range supports common low-voltage system rails, and the -40 °C to +85 °C range covers industrial environments. Validate input settling, filter delay, and output timing as a complete signal chain.
工程參考資料，適用於 CS5451-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 | 28-pin SSOP |
| Brand | Cirrus Logic |
| Resolution | 16 bit |
| Input Channels | 6 channels |
| Architecture | Sigma-delta |
| Supply Voltage Range | 2.7 V to 3.5 V |
| Operating Temperature | -40 °C to +85 °C |
| Target Application | Power measurement |
| Integrated Decimation Filters | Yes |
| Output Interface | Serial |
主要差異化特點
- Six integrated measurement channels (對比Discrete single-channel ADC arrangements)
- Digital filtering within the converter (對比Unfiltered or externally filtered single-channel ADCs)
- Power-measurement-oriented integration (對比General-purpose high-speed ADC families)
設計說明
Separate the analog and digital return paths as far as practical. Keep the six analog input routes short, avoid running them beneath switching nodes or high-current traces, and place input-network components close to their associated pins. The manufacturer datasheet's application information should guide the reference and analog-input layout. A clean analog section is especially important because any coupling from the power stage can appear as measurement error after digital filtering.
Place the device's supply-decoupling capacitors at the corresponding power pins and keep their ground connections short. The CS5451-BS operates from 2.7 V to 3.5 V, so rail tolerance and transient margin must be checked across temperature and load. Verify that the reference and analog-sensing circuits do not disturb the digital supply, and avoid routing switching-node currents through the converter's ground reference.
Select the serial-interface clock rate and output-data timing together with the converter's filtering configuration. Confirm that the host controller can service the selected transfer rate without data loss, and account for filter settling time after changing operating conditions. The serial lines should be routed away from analog inputs, with return paths arranged to minimize coupling into the measurement channels.
Do not select a similarly named family member as a direct substitute without checking its package code, pinout, analog input range, reference requirements, serial protocol, and timing. The CS5451A-IS and CS5451A-ISZ listings identify family variants, but the available technical references do not establish pin-to-pin compatibility with the 28-pin CS5451-BS. Treat any such choice as a redesign until the manufacturer documentation confirms every interface detail.
合規資訊
No specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration is included in the available product information. The device is an industrial and commercial mixed-signal ADC rather than an automotive-qualified AEC-Q100 product.