CS5503-BP - 20-Bit 4 kSps ADC | Cirrus Logic | Sensor Measurement
MPN： CS5503-BP ✗ 停產CS5503-BP 概覽
An ADC is a data-acquisition IC that converts an analog input voltage into a numeric value for processing by a microcontroller, DSP, or other digital controller. The CS5503 belongs to the CMOS ADC hierarchy, where resolution describes the number of digital bits in each conversion result and conversion rate defines how rapidly those results are produced. The CS5503 emphasizes high resolution and moderate speed rather than high-bandwidth waveform acquisition.
Principal features include 20-bit resolution, operation at up to 4 kSps word rate, charge-balance conversion, a 6-pole Gaussian low-pass filter, and on-chip self-calibration circuitry. These characteristics make the converter suitable for slow but precise measurements where physical, chemical, biological, or industrial sensor outputs must be digitized. The integrated filter reduces unwanted high-frequency content before the conversion result is transferred to the digital side.
The charge-balance architecture supports accurate conversion of low-frequency signals, while the digital output can be selected according to the system clock and application requirements. On-chip self-calibration can be initiated at different times or temperatures to help maintain offset and full-scale accuracy. The available datasheet material describes typical calibration errors of less than one-half LSB for the relevant converter family, although application-specific limits should be confirmed against the complete operating conditions.
Typical uses include temperature and pressure sensor acquisition, industrial process monitoring, laboratory instrumentation, and low-speed chemical or biological measurement systems. The CS5503 is most appropriate when 20-bit numeric resolution, on-chip filtering, and conversion rates up to 4 kSps are sufficient, but the input bandwidth is not the primary constraint.
Designers should provide a suitable external clock or crystal, observe the required bypass and grounding practices, and allow adequate settling time for analog and digital supply rails. Because the verified source does not publish complete supply-voltage, reference-voltage, current-consumption, or operating-temperature tables, those values must be verified in the manufacturer datasheet before schematic release.
This product page combines verified converter specifications, practical application guidance, source-backed availability information, and package information that helps engineers determine whether the CS5503-BP fits a precision, low-frequency measurement design before committing to a PCB layout.
直接替換替代品，適用於 CS5503-BP — 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CS5503-BP 最大額定值與電氣特性
| ADC Resolution | 20 bit |
| Maximum Output Word Rate | 4 kSps |
| Conversion Architecture | Charge balance |
| Integrated Filter | 6-pole low-pass Gaussian filter |
| Process Technology | CMOS |
| Self-Calibration | On-chip, user-initiated |
| Typical Offset and Full-Scale Error | Less than 0.5 LSB |
| 封裝 | PDIP-20 |
| 安裝類型 | Through-hole |
| RoHS 狀態 | Compliant |
| Clock Requirement | External CMOS clock or crystal |
CS5503-BP pdip-20 腳位配置指南
CS5503-BP（pdip-20 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： CS5503-BP.
請參閱 資料表 以查看完整腳位配置。
典型應用
CS5503-BP 適用於 6 應用s: Industrial Process Sensor Acquisition, Temperature and Pressure Instrumentation, Chemical and Biological Test Systems, Precision Weighing and Force Measurement, Environmental Monitoring Equipment, Laboratory Data-Acquisition Systems.
Industrial Process Sensor Acquisition
The CS5503-BP fits low-speed industrial measurement systems that require more numeric detail than a conventional 16-bit converter can provide. Its 20-bit resolution and conversion rate of up to 4 kSps are suitable for pressure, level, flow, and temperature signals that change slowly relative to the sampling period. The 6-pole on-chip Gaussian filter helps attenuate high-frequency noise before digital processing, while user-initiated self-calibration supports offset and full-scale control. Engineers must still verify the complete input range, reference configuration, supply limits, and calibration schedule against the manufacturer datasheet.
推薦
Temperature and Pressure Instrumentation
CS5503-BP is appropriate for precision temperature or pressure acquisition when the analog sensor produces a relatively slow, narrow-band signal. A 20-bit result provides 1,024 code levels more than a 16-bit converter, while the available 4 kSps word rate is more than sufficient for many thermal and pressure loops. Its integrated 6-pole Gaussian low-pass filter can reduce electrical noise surrounding the sensor output. The main design checks are analog excitation, input conditioning, reference stability, and ensuring that filtering delay is acceptable for the intended measurement bandwidth.
推薦
Chemical and Biological Test Systems
The CS5503-BP can digitize low-frequency chemical or biological sensor outputs where resolution and rejection of unwanted high-frequency content matter more than acquisition speed. The manufacturer describes the CS5503 as a 20-bit charge-balance CMOS ADC intended for physical, chemical, and biological processes, with conversion rates up to 4 kSps. Its on-chip 6-pole Gaussian filter and self-calibration circuitry simplify analog front-end design. For laboratory or diagnostic equipment, engineers should verify noise, linearity, settling time, and reference requirements for the complete signal chain before selecting external filter components.
推薦
Precision Weighing and Force Measurement
CS5503-BP is suitable for load-cell, force, and weighing systems when the mechanical signal changes slowly and the system benefits from high-resolution digitization. The 20-bit conversion result and maximum 4 kSps word rate provide a useful balance between numerical precision and responsiveness, while the integrated Gaussian filter can suppress high-frequency mechanical and electrical disturbances. For strain-gage bridges, the ADC should be paired with a suitably stable excitation and low-noise analog front end. Baseline offset, gain calibration, warm-up behavior, and the manufacturer-recommended self-calibration timing require system-level verification.
推薦
Environmental Monitoring Equipment
CS5503-BP supports environmental monitoring instruments that combine several slow analog sensors, such as humidity, gas, pressure, and ambient-temperature channels. Its 20-bit resolution preserves fine changes in slowly varying readings, and conversion rates up to 4 kSps provide flexibility in multiplexing and control-loop response. The 6-pole on-chip low-pass Gaussian filter helps reject noise outside the intended measurement bandwidth. Because the verified data does not include input multiplexing details, channel count, supply specifications, or environmental ratings, an engineer must confirm those parameters in the complete Cirrus Logic datasheet before finalizing the instrument architecture.
推薦
Laboratory Data-Acquisition Systems
The CS5503-BP can serve as the measurement ADC in a laboratory instrument for low-frequency analog signals requiring 20-bit numerical resolution. Its charge-balance architecture, 6-pole Gaussian filter, and on-chip self-calibration provide useful features for precision data acquisition without requiring a separate digital filtering stage. A 4 kSps maximum word rate is appropriate for temperature, pressure, force, and many chemical sensor channels, although it is not suitable for high-bandwidth oscilloscope acquisition. The analog reference, input range, clock arrangement, digital interface, and supply sequencing must be implemented according to the manufacturer datasheet.
推薦
推薦產品摘要
工程參考資料，適用於 CS5503-BP — 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 | PDIP-20 |
| Brand | Cirrus Logic |
| ADC Resolution | 20 bit |
| Maximum Output Word Rate | 4 kSps |
| Conversion Architecture | Charge balance |
| Integrated Filter | 6-pole low-pass Gaussian filter |
| Process Technology | CMOS |
| Self-Calibration | On-chip, user-initiated |
| Verified Price | $3.4805 as of 2026-10-30 |
| RoHS Status | Compliant |
主要差異化特點
- Higher conversion resolution than the CS5501 family member (對比CS5501-BP)
- Retains the original PDIP-20 footprint (對比CS5503-BS)
- Integrated digital-noise filtering (對比CS5501-BP)
設計說明
Route the analog input, reference, and converter clock as short, quiet nets, and place associated bypass components directly at their associated pins. Keep digital interface traces away from the analog input and reference paths. The verified information identifies an external CMOS clock or crystal as the sampling source, so the clock layout should prevent coupling from switching nodes into the charge-balance converter.
Treat the 6-pole Gaussian filter as part of the complete signal-path bandwidth rather than as an independent specification. Its settling behavior affects the usable sampling rate and measurement latency. Confirm the permitted clock range and output word rate in the complete manufacturer datasheet, and validate filter delay against any control-loop or data-acquisition timing requirement.
Do not substitute CS5501-BP or CS5503-BS as a direct PCB replacement. CS5501-BP has a PDIP-16 package and 16-bit resolution, while CS5503-BS is available in 20-SOIC. The verified cross-reference data does not identify another part with the same PDIP-20 footprint and pin compatibility, so any redesign requires a new land pattern and complete pin-level review.
Verify supply-voltage limits, analog and digital current consumption, and reference requirements before assigning capacitors or designing power rails. These values are not present in the supplied source excerpts. Use the values and application guidance from the manufacturer datasheet rather than estimating rail headroom or bypassing the missing electrical limits.
合規資訊
RoHS compliance is identified in the verified distributor data. No verified REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement was supplied. AEC-Q100 is treated as not applicable because the device is an industrial and consumer measurement ADC rather than an automotive-qualified component.
