CS5509-AP - 16-Bit 2-Input Sigma-Delta ADC | Cirrus Logic
MPN： CS5509-AP ✓ 啟用中CS5509-AP 概覽
An ADC is an interface IC that samples an analog voltage and converts it into a numeric value for processing, measurement, or control. A sigma-delta ADC belongs to the class of mixed-signal converters that use continuous-time oversampling and digital filtering to achieve fine resolution. The CS5509-AP combines that conversion technique with a single-supply architecture, allowing it to operate from one supply rail in compact industrial, instrumentation, and embedded measurement equipment.
The manufacturer identifies the device as a 16-bit converter with two analog inputs and a sigma-delta conversion system. Its dual-input arrangement allows a board to measure more than one analog quantity or use differential measurement when the circuit configuration requires it. Single-supply operation can also simplify signal-chain design by reducing the number of rails needed around the converter, although the supported supply range and input limits must be confirmed in the manufacturer datasheet before final component selection.
The sigma-delta architecture is particularly useful when high nominal resolution and narrow-band measurement accuracy matter more than very high conversion speed. Such converters commonly use an external or internal reference, an analog input stage, a modulator, a digital decimation filter, and a serial interface. Exact filter characteristics, output rates, digital interface modes, and calibration behavior for the CS5509-AP should be taken directly from the applicable Cirrus Logic datasheet.
Typical uses include industrial process monitoring, low-level sensor acquisition, laboratory instrumentation, and embedded measurement modules. In these systems, the CS5509-AP serves as the bridge between an analog sensor front end and a microcontroller or other digital controller. Designers should pay particular attention to the reference voltage, input common-mode range, analog input filtering, grounding, and the acquisition timing associated with the selected output data rate.
For layout, keep the analog input and reference paths short, use a clean low-noise supply, and follow the manufacturer guidance for bypassing and grounding. Because the package is a through-hole PDIP rather than a fine-pitch surface-mount option, it is especially practical for prototypes, educational designs, and moderate-volume industrial assemblies where insertion or socketed assembly is acceptable.
This page consolidates the confirmed device identity, package, converter type, sourcing links, technical design guidance, and application-selection context into one engineering-oriented resource for evaluating the CS5509-AP.
直接替換替代品，適用於 CS5509-AP — 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CS5509-AP 最大額定值與電氣特性
| Product Type | Analog-to-Digital Converter (ADC) |
| Manufacturer | Cirrus Logic |
| 解析度 | 16 bit |
| Analog Input Count | 2 inputs |
| Conversion Architecture | 1 sigma-delta |
| Supply Type | Single supply |
| 封裝 | 16-PDIP |
| 安裝方式 | Through-hole |
CS5509-AP 16-pdip 腳位配置指南
CS5509-AP（16-pdip 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： CS5509-AP.
請參閱 資料表 以查看完整腳位配置。
典型應用
CS5509-AP 適用於 6 應用s: Industrial Process Measurement, Precision Sensor Acquisition, Laboratory Instrumentation, Environmental Monitoring, Data Acquisition Modules, Educational Electronics Projects.
Industrial Process Measurement
The CS5509-AP is suitable for acquiring slow-changing process variables such as pressure, temperature, level, or slow pressure-transducer outputs. Its 16-bit sigma-delta architecture is appropriate when the measurement bandwidth is narrow and high nominal resolution is more valuable than rapid sampling. The two analog inputs allow a board to acquire more than one conditioned signal when the converter configuration supports it. At the board level, provide anti-alias filtering, a low-noise reference, local supply bypassing, and careful grounding around the 16-PDIP device. Confirm the converter’s exact input and common-mode limits before scaling a transmitter output.
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Precision Sensor Acquisition
The CS5509-AP fits low-level sensor front ends where a bridge, resistive sensor, or transducer produces a narrow-band analog signal that must be digitized accurately. Its 16-bit conversion resolution provides a suitable starting point for precision measurement, while the sigma-delta architecture supports digital filtering of out-of-band noise. The circuit should condition the sensor close to the ADC so that the two analog inputs, reference network, and return path remain free of high-energy switching nodes. Verify input range, common-mode voltage, and conversion timing in the Cirrus Logic datasheet before selecting amplifier and filter values.
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Laboratory Instrumentation
The CS5509-AP can serve as the measurement converter in laboratory instruments that monitor slow or narrow-band analog quantities. Examples include bench power supplies, environmental analyzers, and precision measurement interfaces where the desired result is a stable digital reading rather than a high-rate waveform. The 16-bit resolution supports detailed measurement, and the two inputs can provide convenient signal monitoring when the application only requires low-bandwidth data. Use shielded analog routing, a clean reference, and deliberate digital filtering, and verify the output-data rate against the instrument’s required settling time and display-update cycle.
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Environmental Monitoring
The CS5509-AP is appropriate for environmental monitoring modules that measure slow analog signals from gas, humidity, pressure, or water-level sensors. These applications generally favor resolution and stable readings over rapid conversion, matching the sigma-delta approach of the device. Both analog inputs can be useful for monitoring a primary environmental quantity and a secondary reference or status channel. Design the front end with sensor-specific filtering, protection appropriate to the measured environment, and ground planes that prevent converter current from sharing a path with sensitive sensor returns. Confirm operating-temperature and environmental qualification requirements separately.
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Data Acquisition Modules
The CS5509-AP can be used in compact data-acquisition modules intended to digitize narrow-band sensor channels for a controller or host processor. Its 16-bit resolution and two-input configuration make it useful when each channel changes slowly and the system emphasizes measurement accuracy over acquisition throughput. Place the converter close to the analog connector and protection network to minimize noise pickup, while keeping its digital interface away from sensitive analog traces. The complete design should verify serial-interface timing, output-code format, reference requirements, and the conversion sequence needed by the host processor.
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Educational Electronics Projects
The CS5509-AP is well suited to university laboratories and educational analog-measurement projects because it combines a 16-bit sigma-delta converter with a through-hole 16-PDIP package. The package is straightforward to place on a prototype board, and the dual analog inputs support experiments involving sensor conditioning, filtering, reference stability, and digital acquisition. Students can compare the measured code with known input voltages and examine how filtering and noise affect accuracy. Use the manufacturer pinout and reference circuit for every connection, and treat the experiment as a learning platform rather than a substitute for production-grade protection or qualification.
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工程參考資料，適用於 CS5509-AP — 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 |
|---|---|
| Product Type | 16-bit analog-to-digital converter |
| Brand | Cirrus Logic |
| Package | 16-PDIP |
| Analog Input Count | 2 inputs |
| Conversion Architecture | 1 sigma-delta |
| Supply Type | Single supply |
| Resolution | 16 bit |
| Mounting Style | Through-hole |
設計說明
Keep the analog input traces short, route them away from switching nodes and digital clocks, and place the input-network components close to the converter. The 16-PDIP package provides through-hole access, but lead spacing alone does not compensate for poor analog routing. Use a continuous ground plane where practical and connect analog returns without sharing narrow paths with digital output-current return routes.
Place the required bypass capacitors close to the supply pins and use a low-noise supply path. Confirm the permitted supply and reference voltages in the manufacturer datasheet before selecting regulators or reference components. Grounding and capacitor placement are especially important because measurement error at the 16-bit level can arise from reference instability or supply disturbance even when the converter itself has adequate nominal resolution.
Design an analog anti-alias filter appropriate to the intended signal bandwidth and the converter’s output-data rate. The filter should limit out-of-band energy before the sigma-delta modulator while preserving the measurement signal. Do not infer allowable input swing or common-mode range from generic ADC rules; check those limits against the Cirrus Logic application information and validate the complete front end with representative signals.
合規資訊
No specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals statement is included in the available component records. AEC-Q100 is not applicable because the ADC is not identified as an automotive-qualified device.
