CS5321-BL 24-Bit Variable-Bandwidth ADC | Cirrus Logic
MPN: CS5321-BL ✓ Hoạt độngCS5321-BL Tóm tắt
An analog-to-digital converter, or ADC, converts an analog input voltage into a numeric representation for processing, measurement, display, or storage. The CS5321-BL belongs to the ADC and DAC product hierarchy, specifically the delta-sigma ADC category. Its variable-bandwidth characteristic allows the measurement bandwidth to be adjusted for the signal and resolution requirements of the application.
The primary feature of the CS5321-BL is its 24-bit digital output resolution. It accepts two analog input channels and uses a sigma-delta conversion approach optimized for high dynamic range and low-frequency measurement. The manufacturer documentation describes the chipset as intended for very-high-resolution measurements of signals below 1500 Hz, making it relevant to industrial instrumentation, sensor measurement, and precision analog acquisition systems.
The CS5321-BL is identified as part of a chipset architecture rather than a conventional standalone converter. The circuit includes a modulator and digital-filter-related functions that work together to produce the 24-bit representation. A documented application note compares the ADS1201 modulator with CS5321 operation and describes using CS5322 with the ADS1201 to obtain the same 24-bit digital representation, illustrating the functional relationship between the modulator and digital filtering stages.
Typical applications include precision bridge and pressure sensing, low-level process instrumentation, laboratory measurement systems, and industrial monitoring equipment. In these systems, slow-changing sensor outputs benefit from high resolution and adjustable bandwidth, while the 2-input arrangement supports multiplexed or differential measurement when configured appropriately by the surrounding circuitry.
Board design should follow the manufacturer’s pin-description and reference-circuit guidance. PLCC devices require careful lead alignment, adequate solder-joint inspection, and suitable thermal relief beneath the package. Power and analog ground paths should be arranged to minimize digital return current through sensitive analog inputs, while filtering and clock implementation must follow the recommended chipset connections.
This page organizes the CS5321-BL’s verified technical identity, sourcing information, application guidance, and comparison criteria. It also distinguishes verified drop-in alternatives from broader functional equivalents so engineers can assess PCB compatibility before changing a production design.
Bộ thay thế dễ dàng lắp đặt cho CS5321-BL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
CS5321-BLZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
CS5321-BL Tỷ lệ tối đa & tính chất điện
| Converter Type | Sigma-delta analog-to-digital converter chipset |
| Độ phân giải | 24 bit |
| Number of Inputs | 2 inputs |
| Bandwidth Class | Variable bandwidth |
| Maximum Intended Signal Frequency | Below 1500 Hz |
| Package Type | 28-pin PLCC |
| Package Dimensions | 11.51 mm x 11.51 mm |
| Kiểu lắp đặt | Surface mount |
| Power Dissipation | 100 mW |
| Product Classification | Data acquisition IC |
| ADC Architecture | Sigma-delta |
| Digital Representation | 24-bit |
| Input Configuration | 2 analog inputs |
Hướng dẫn cấu hình chân CS5321-BL 11.51 mm x 11.51 mm
Cấu hình chân cho CS5321-BL (11.51 mm x 11.51 mm gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho CS5321-BL.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
CS5321-BL phù hợp cho 6 Áp dụngs: Industrial Process Measurement, Bridge and Pressure Sensor Acquisition, Precision Instrumentation, Data Acquisition Systems, Environmental Monitoring, Condition Monitoring.
Industrial Process Measurement
The CS5321-BL fits low-level industrial process measurement because it provides a 24-bit sigma-delta result and is intended for signals below 1500 Hz. Two analog inputs allow a front end to handle related sensor channels without moving to a faster converter architecture. The designer should condition each input to the range accepted by the chipset, preserve the recommended analog-ground topology, and select bandwidth according to the required response time. Compared with a conventional high-speed SAR ADC, this variable-bandwidth approach prioritizes resolution for slowly varying process variables. The 28-pin PLCC also suits established control-board layouts where replacing a complex mixed-signal design would be costly.
Được đề xuất
Bridge and Pressure Sensor Acquisition
The CS5321-BL is applicable to bridge, pressure, and other slowly changing sensor systems where a 24-bit result can improve use of the sensor signal range. Its documented operating intent extends to signals below 1500 Hz, which covers many temperature, pressure, force, and level measurements. A practical design uses the two inputs for carefully conditioned sensor channels or an input multiplexer, with protection, gain, and filtering selected around the front end. Variable bandwidth permits a tradeoff between conversion latency and noise. Engineers should verify input limits, common-mode behavior, clocking, and grounding in the manufacturer datasheet rather than assuming the numerical performance of a generic 24-bit ADC.
Được đề xuất
Precision Instrumentation
The CS5321-BL supports precision laboratory and field instrumentation where measurement resolution is more important than rapid waveform acquisition. Its 24-bit output and variable-bandwidth sigma-delta architecture can represent low-level analog measurements below 1500 Hz with a filtering strategy matched to the instrument bandwidth. Two analog inputs support multiplexed or multichannel front-end designs, provided the selected switching and settling time are compatible with the chosen bandwidth. For a new instrument, evaluate whether the PLCC package and chipset implementation remain preferable to a newer converter package. For an existing instrument, retaining the established board can reduce redesign risk while preserving high-resolution measurement behavior.
Được đề xuất
Data Acquisition Systems
The CS5321-BL is appropriate for dedicated data-acquisition systems that repeatedly sample slowly changing analog channels and require more resolution than a basic general-purpose ADC. Its two-input, variable-bandwidth configuration can support a front end with analog multiplexing, while the 24-bit result provides a numeric basis for calibration and compensation. The conversion and digital-filter architecture should be configured so the output rate, latency, and rejection bandwidth meet the measurement specification. Keep clock routing and digital interfaces away from sensitive analog paths, and follow the manufacturer’s reference connections. A cross-brand converter should enter the design only after input range, clocking, data interface, package, and PCB changes have been reviewed as a complete replacement plan.
Được đề xuất
Environmental Monitoring
The CS5321-BL can be used in environmental monitoring equipment that measures low-frequency signals such as temperature, humidity, light level, gas concentration, or vibration-derived DC and low-frequency quantities. Its variable bandwidth and 24-bit resolution are useful when extracting small changes from sensor outputs, while the two inputs can reduce front-end duplication when the sensing channels share suitable electrical characteristics. The most important design choice is to avoid demanding sample rates above what the measurement physics requires. Set the digital-filter bandwidth to reject unwanted noise without creating excessive latency. Verify the complete sensor excitation and conditioning path, including common-mode range, grounding, and protection, against the manufacturer electrical tables.
Được đề xuất
Condition Monitoring
The CS5321-BL is relevant to condition-monitoring equipment that derives diagnostic values from slowly varying sensor signals, such as temperature, vibration envelope, or pressure trends. The device’s intended use for signals below 1500 Hz suits systems that perform analysis on filtered or rectified sensor outputs rather than direct high-rate waveform sampling. Two analog inputs permit related measurements to share the converter, helping synchronize channels when the front end and settling behavior support it. A production design should include input protection suitable for industrial transients and verify the converter’s operating limits independently of the sensor rating. Because the CS5321-BL is a chipset implementation, validate its clock, filter, and data-transfer behavior as a complete circuit rather than treating it as a simple standalone ADC.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho CS5321-BL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | CS5321-BLZ |
|---|---|---|
| Package | 28-pin PLCC (11.51 mm x 11.51 mm) | 28-pin PLCC (QCCJ) |
| Brand | Cirrus Logic | Cirrus Logic |
| Converter Type | Sigma-delta ADC chipset | Sigma-delta ADC chipset |
| Mounting Type | Surface mount | Surface mount |
| Power Dissipation | 100 mW | 100 mW in the published comparison entry |
Bảo phân biệt quan trọng
- Retains the established 28-pin PLCC implementation (vsADS1201)
- Provides two analog inputs (vsCS5321-BLZ)
- Targets high-resolution low-frequency measurement (vsADS1201)
Ghi chú thiết kế
Treat the 28-pin PLCC footprint as a rework-sensitive assembly choice. Confirm pad geometry against the QCCJ package drawing, maintain adequate spacing for a PLCC socket or soldering process, and inspect all 28 joints after assembly. Because the complete numbered pin description is not reproduced in the public excerpts, assign every trace only after checking the manufacturer pin table and reference circuit.
Separate sensitive analog inputs from digital clock and data paths, and route modulator and filter signals according to the manufacturer reference layout. Keep analog and digital return currents controlled so switching activity does not add offset or noise to low-level inputs. Use a quiet ground strategy, minimize loop area around connections, and place required input and filtering components close to their associated device pins.
Do not interpret the 24-bit label as a guarantee of 24-bit useful accuracy in every system configuration. Front-end noise, reference quality, modulator and digital-filter settings, clock implementation, and PCB grounding can limit real-world resolution. The device is intended for signals below 1500 Hz, so requesting conversion latency or bandwidth beyond the application requirement can reduce efficiency without improving the useful measurement result.
Use the published 100 mW power-dissipation entry as the initial thermal check and confirm operating conditions against the manufacturer electrical tables. The PLCC footprint provides a soldered thermal path, but board copper, ambient temperature, and adjacent heat sources still affect junction temperature. Estimate the worst-case dissipation from the actual supply and load conditions and verify that the assembled board keeps the device within its rated temperature range.
Thông tin tuân thủ
The accessible product information does not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status for the exact MPN. AEC-Q100 is not applicable because no automotive qualification is identified.
