CS5503-BS - 20-Bit 4 kSPS Sigma-Delta ADC | Cirrus Logic
MPN: CS5503-BS ✓ AktifCS5503-BS Genel Bakış
An ADC, or analog-to-digital converter, is a mixed-signal semiconductor that transforms continuously varying analog voltages into numerical values. Sigma-delta ADCs belong to the data-acquisition IC hierarchy and use oversampling plus digital filtering to obtain high resolution at relatively low sample rates. The CS5503 is the 20-bit member of the CS5501 and CS5503 measurement-converter family.
The principal verified characteristics include 20-bit resolution, one analog input, up to 4 kSPS word rates, a 20-pin SOIC package, and a charge-balance conversion architecture. Production testing is performed at 4.096 MHz, while the device is guaranteed by characterization to operate with a 200 kHz system clock. These details position it for slow sensor signals rather than high-bandwidth waveform acquisition.
The non-aliasing architecture is particularly useful when slow measurements contain significant periodic interference, such as 50 Hz or 60 Hz mains hum. By shifting conversion aliases away from the selected output data rate, the CS5503-BS can help preserve the represented process signal without requiring the wide analog bandwidth associated with a high-speed flash or successive-approximation ADC. Digital output is represented by a 20-bit measurement word, while serial interface timing controls acquisition and transfer.
Typical applications include bridge-based pressure and load measurement, temperature acquisition from resistive sensors, industrial process monitoring, chemical sensor instrumentation, and low-speed biomedical signal conditioning. The converter is best suited to systems where the measured quantity changes slowly and where high resolution is more valuable than high throughput. Its single-input architecture also keeps the signal chain compact when one transducer must be measured per converter.
Designers should account for the analog front end, reference voltage, digital interface, grounding, and clock requirements when allocating the PCB area. The input network must protect the ADC from overvoltage and excessive source impedance, while the reference and supply rails must remain within their specified operating conditions. Because detailed pin names, electrical limits, and capacitor values were not included in the supplied verified excerpts, those implementation values should be confirmed directly against the manufacturer datasheet.
This product record combines verified resolution, conversion-rate, package, architecture, and sourcing information with application-specific guidance. It also distinguishes same-family alternatives by resolution and packaging while making missing verified electrical details explicit, allowing engineers to assess fit without treating unavailable parameters as confirmed specifications.
Drop-in alternatifler için CS5503-BS — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
CS5503-BSZ
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CS5503-BSR
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CS5501-BS
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
CS5501-BSZ
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
CS5471-BS
✅ Yerleştirme📋 Katalogda Olmayan Referans Alternatifi
CS5503-BS Maksimum Değerlendirmeler & Elektriksel Özellikler
| ADC Type | Sigma-delta A/D converter |
| Çözünürlük | 20 bit |
| Number of Inputs | 1 input |
| Maximum Word Rate | 4 kSPS |
| Conversion Architecture | Charge-balance |
| Process Technology | CMOS |
| Production Test Clock Frequency | 4.096 MHz |
| Guaranteed System Clock Frequency | 200 kHz |
| Signal Class | Low-frequency measurement signals |
| Paket | 20-pin SOIC, 7.50 mm width |
| Montaj Türü | Surface mount |
| RoHS Durumu | unknown |
| REACH Status | unknown |
CS5503-BS 20-pin soic, 7.50 mm width Pin Yapısı Kılavuzu
CS5503-BS (20-pin soic, 7.50 mm width paket) için pin yapısı. Bu analog bileşen, giriş, çıkış ve güç besleme pinleri içerir. Ofset null, telafi ve etkinleştirme pin yapılandırmaları için üretici veri kitapçığını referans alın. Sinyal işleme ve güç amplifikasyon devreleri için mükemmel bir bileşendir.
Ayrıntılı pin çıkış verisi mevcut değil: CS5503-BS.
Aşağıdaki veri sayfası tam pin konfigürasyonu için.
Tipik Uygulamalar
CS5503-BS için uygundur 6 uygulamas: Industrial Pressure Sensor Acquisition, Temperature and Resistive Sensor Measurement, Chemical Sensor Instrumentation, Low-Speed Biomedical Signal Conditioning, Process Monitoring and Data Acquisition, Laboratory Instrumentation and Portable Meters.
Industrial Pressure Sensor Acquisition
The CS5503-BS fits slow bridge-based pressure measurements because its 20-bit resolution can preserve small changes in differential sensor output, while its non-aliasing sigma-delta architecture helps keep periodic interference away from the selected output rate. The converter supports word rates up to 4 kSPS, which is more than adequate for pressure signals that usually change gradually compared with the process bandwidth. Place the bridge and precision front end close to the ADC input, provide a low-noise reference, and apply the manufacturer-recommended input filtering. Compared with a 16-bit converter, the CS5503-BS supplies four additional resolution bits, which can improve useful transducer resolution when noise and reference errors do not dominate.
Önerilen
Temperature and Resistive Sensor Measurement
The CS5503-BS is appropriate for RTD, thermistor, and other resistive temperature sensors whose output changes slowly but may require fine resolution over a restricted measurement range. Its 20-bit conversion capability and charge-balance architecture support precise digitizing of low-level sensor voltages, while the 4 kSPS maximum word rate allows averaging or faster acquisition than many extremely low-speed converters provide. The key design consideration is that ADC resolution cannot overcome errors in the reference, excitation source, or analog signal path. Use stable excitation and reference arrangements, and confirm the permitted input and common-mode ranges against the manufacturer datasheet before choosing resistor values or protection components.
Önerilen
Chemical Sensor Instrumentation
The CS5503-BS supports chemical and biological sensing systems where the transducer output represents concentration, pH, conductivity, or another slowly varying chemical quantity. The verified 20-bit resolution can represent small sensor-voltage changes, and the non-aliasing behavior is useful when mains-related interference is present in an industrial or laboratory environment. The ADC is used behind analog conditioning that converts the sensor output into an allowable input range. Because electrochemical sensors can have slow response times and substantial noise, the digital averaging and filter configuration should complement rather than obscure the physical measurement. Verify the complete analog input range and reference requirements in the datasheet before finalizing the conditioning circuit.
Önerilen
Low-Speed Biomedical Signal Conditioning
The CS5503-BS can be used for low-frequency biomedical acquisition when the selected signal has been appropriately isolated, conditioned, and band-limited. Its 20-bit resolution is advantageous for extracting small changes from physiological or electrochemical variables, while the sigma-delta architecture and non-aliasing behavior can reduce interference artifacts in suitable measurement conditions. Its 4 kSPS ceiling supports general monitoring signals but not high-frequency ECG waveforms, so analog anti-alias filtering remains essential. The device is a measurement ADC rather than a medical front end; isolation, patient protection, reference quality, and diagnostic validation must be addressed by the complete system design.
Önerilen
Process Monitoring and Data Acquisition
The CS5503-BS is well matched to process-monitoring nodes that report pressure, flow proxy, level, or temperature through slowly changing analog voltages. Its single-input arrangement permits one converter to be allocated to each measurement channel, while the 4 kSPS word rate provides sufficient timing resolution for ordinary industrial control and logging. The non-aliasing conversion approach helps preserve low-frequency process information when periodic interference is present. For a multi-channel system, planners should account for synchronization and the SLEEP-pin timing constraint noted in the verified datasheet excerpt. Grounding, reference distribution, and analog trace layout should be planned together to prevent converter performance from being limited by the front end.
Önerilen
Laboratory Instrumentation and Portable Meters
The CS5503-BS can support laboratory instruments and portable meters that require high-resolution acquisition from slow sensors within a compact 20-pin SOIC footprint. The 20-bit result provides more measurement granularity than a 16-bit ADC, while word rates up to 4 kSPS are suitable for meter refresh and controlled measurement sequences. Portable designs must pay particular attention to reference-voltage stability, supply noise, input protection, and grounding because battery operation and probe wiring can degrade apparent resolution. A calibrated reference and carefully shielded sensor connection are as important as the converter itself. Confirm the power-supply range and current consumption from the manufacturer datasheet before selecting the platform regulator and battery configuration.
Önerilen
Önerilen Ürünler Özeti
Mühendislik referans verileri: CS5503-BS — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | CS5503-BSZ | CS5503-BSR | CS5501-BS | CS5501-BSZ | CS5471-BS |
|---|---|---|---|---|---|---|
| Package | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC | 20-pin SOIC |
| Brand | Cirrus Logic | Cirrus Logic | Cirrus Logic | Cirrus Logic | Cirrus Logic | Cirrus Logic |
| Resolution | 20 bit | 20 bit | 20 bit | 16 bit | 16 bit | 16 bit |
| Ordering Form | CS5503-BS bulk ordering suffix | Tape-and-reel ordering suffix | Reel ordering suffix | Bulk ordering suffix | Tape-and-reel ordering suffix | Bulk ordering suffix |
Ana Farklılayıcılar
- Higher nominal converter resolution (karşılaştırma:CS5501-BS)
- Single-input architecture suited to dedicated sensor nodes (karşılaştırma:CS5471-BS)
- Same-family ordering flexibility without changing the core converter (karşılaştırma:CS5503-BSZ)
- Higher resolution at the same verified family word-rate ceiling (karşılaştırma:CS5501-BSZ)
Tasarım Notları
Treat the analog input, reference, supply, and ground paths as one continuous precision signal chain. Place the converter's decoupling components and the protected analog input network close to their associated pins, and route the sensitive input away from digital clock and serial-interface traces. The supplied data does not provide the manufacturer-recommended capacitor values or a complete reference circuit, so those values must be taken directly from the datasheet rather than inferred.
Use the verified 4.096 MHz production-test clock only as a family characterization point, and design the operating clock around the datasheet's guaranteed 200 kHz condition. The excerpt notes a synchronization limitation when several CS5501 or CS5503 converters use the SLEEP pin, so multi-channel designs must preserve the specified clock relationship and timing margin. Do not increase the clock without reviewing the converter timing, filter behavior, and output-rate requirements in the manufacturer document.
Do not equate the 20-bit nominal resolution with 20 effective bits. Sensor noise, reference drift, excitation variation, input leakage, PCB contamination, and insufficient analog filtering can dominate the measurement. For slow bridge or resistive sensors, characterize the complete input chain at the intended word rate and averaging settings. The CS5503-BS is intended for low-frequency signals up to 4 kSPS, so attempting high-bandwidth waveform acquisition with it would be a fundamental design error.
The supplied excerpts do not specify the allowed supply range, reference voltage, or current consumption. These values must be verified before designing the power tree, regulator selection, reference source, or startup sequence. In particular, a low-noise ADC can still be limited by reference and supply noise, so validate those sources using the manufacturer's recommended application circuit and account for any digital-interface power relationship shown in the datasheet.
Uyumluluk Bilgisi
The supplied manufacturer-datasheet and distributor excerpts did not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim has been inferred.
