CS5529-AP 16-Bit Delta-Sigma ADC | Cirrus Logic
MPN： CS5529-AP ✗ 停產CS5529-AP 概覽
A delta-sigma ADC is a high-resolution data-converter category that converts an analog voltage into a digital representation by using a fourth-order modulator and digital filtering. Within the broader semiconductor hierarchy, it belongs to the ADC family, then data-converter ICs, and ultimately the integrated-circuit category. This architecture is especially useful when high nominal resolution, programmable conversion behavior, and simple serial connectivity matter more than very high sampling rates.
The CS5529 combines coarse and fine charge buffers with a fourth-order delta-sigma modulator. According to the Cirrus Logic datasheet, it includes a calibration microcontroller, eight selectable digital filters with programmable decimation rates, a 6-bit output latch, and a 3-wire serial interface. Programmable output rates allow the system designer to balance measurement throughput against signal bandwidth and filtering requirements.
The converter supports single-conversion operation and is designed for low-power measurement systems. Its 1.88 Hz output-rate specification supports slow, high-resolution measurements where the sampled signal does not require rapid updates. The 16-bit conversion word and six-bit output latch provide a defined digital handoff to a microcontroller or other serial host, while the filtered delta-sigma architecture helps reduce the need for extensive external analog filtering.
Typical applications include precision pressure and force measurement, low-frequency process instrumentation, temperature acquisition, industrial sensor interfaces, laboratory measurement equipment, and embedded systems that require a calibrated low-rate analog measurement. The one-input architecture is particularly suitable for single-channel sensing where the analog signal level is known and stable enough to benefit from controlled conversion timing.
For PCB implementation, preserve the analog input path from the sensor to the converter, provide the decoupling and reference arrangements specified by the manufacturer, and route the three-wire serial interface away from high-current switching nodes. The 20-pin SSOP footprint requires careful assembly planning because its closely spaced leads are less forgiving of solder bridging than a leaded package.
This page consolidates the converter architecture, operating limits, interface details, application guidance, and replacement assessment into a design-focused reference. It also distinguishes documented device characteristics from selection questions that require confirmation against the latest manufacturer datasheet before a new layout or production release.
直接替換替代品，適用於 CS5529-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CS5529-AP 最大額定值與電氣特性
| Converter Type | Delta-sigma analog-to-digital converter |
| 解析度 | 16 bit |
| Analog Input Count | 1 input |
| Modulator Order | Fourth order |
| Supply Voltage Range | 2.5 V to 5 V |
| 工作溫度範圍 | -40°C to +85°C |
| Programmable Output Rate | 1.88 Hz |
| Digital Filter Count | 8 filters |
| Decimation Rates | Programmable |
| Output Latch Width | 6 bit |
| Serial Interface | 3-wire serial interface |
| Input Buffer Architecture | Coarse and fine charge buffers |
| Calibration Controller | Embedded calibration microcontroller |
| Conversion Mode | Single-conversion settling |
| 封裝 | 20-pin SSOP |
CS5529-AP 20-pin ssop 腳位配置指南
CS5529-AP（20-pin 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： CS5529-AP.
請參閱 資料表 以查看完整腳位配置。
典型應用
CS5529-AP 適用於 6 應用s: Precision Pressure Measurement, Industrial Temperature Sensing, Force and Load Cell Interface, Process Instrumentation, Laboratory Measurement Equipment, Embedded Sensor Acquisition.
Precision Pressure Measurement
The CS5529-AP fits slow-changing pressure-sensor signals that benefit from a 16-bit conversion word and programmable digital filtering. Its fourth-order delta-sigma modulator, eight selectable filters, and 1.88 Hz listed output rate support controlled acquisition when the pressure varies slowly relative to the conversion cycle. Place the sensor interface close to the converter, follow the manufacturer reference and decoupling arrangement, and verify that the filter settling time accommodates the required pressure-update cadence.
Industrial Temperature Sensing
The CS5529-AP is suitable for temperature acquisition in industrial equipment where the thermal signal changes over seconds or longer rather than at audio or communications rates. A 16-bit delta-sigma conversion path, programmable decimation rates, and single-conversion settling support periodic readings while reducing unnecessary continuous activity. Select the output-rate setting that captures the required thermal response without excessive averaging delay, and use the manufacturer input-conditioning guidance for sensor excitation and reference stability.
Force and Load Cell Interface
The CS5529-AP can serve as the acquisition converter for a bridge-based force or load-cell channel when mechanical motion produces a low-frequency differential signal. Its 16-bit nominal resolution, single analog input, fourth-order modulator, and programmable filtering are appropriate for extracting a stable measurement from a sensitive sensor system. The design must still satisfy the bridge excitation, analog common-mode, reference, and filter requirements in the manufacturer application guidance before the device is considered electrically interchangeable.
Process Instrumentation
The CS5529-AP is appropriate for slow process variables monitored by industrial transmitters or data-acquisition modules. Its low-rate, programmable delta-sigma architecture supports precise conversion of stable sensor voltages, while the 3-wire interface limits the number of host-controller connections. Operating from 2.5 V to 5 V also supports common embedded supply arrangements. Design the front end around the permitted analog-input range and use the eight digital-filter choices to balance measurement latency against output noise and update speed.
Laboratory Measurement Equipment
The CS5529-AP is useful in bench instrumentation that records calibrated, slowly changing quantities rather than high-frequency waveforms. Its fourth-order delta-sigma modulator and programmable decimation filters can provide a filtered digital result, while the 6-bit output latch and 3-wire serial interface simplify integration with a measurement controller. The listed 1.88 Hz output rate makes it more appropriate for environmental, force, or slow laboratory probes than for oscilloscope-style acquisition, and the complete timing chain should be accounted for in trigger latency.
Embedded Sensor Acquisition
The CS5529-AP can support a dedicated sensing node in an embedded industrial system that periodically measures one analog channel. Single-conversion settling, eight digital filters, and programmable output rates let the firmware request measurements at an appropriate interval, while the 2.5 V to 5 V operating range accommodates common logic supply plans. Confirm the supported analog-input span, reference behavior, and digital output protocol from the manufacturer datasheet before assigning the serial pins or designing the sensor front end.
工程參考資料，適用於 CS5529-AP — 比較、設計指引及合規資訊。
選型指南
主要差異化特點
- Integrated programmable delta-sigma filtering (對比No verified drop-in alternative is established for comparison)
- Dedicated single-channel measurement architecture (對比No verified drop-in alternative is established for comparison)
- Compact digital control interface (對比No verified drop-in alternative is established for comparison)
設計說明
Keep the analog input, reference, and converter ground paths compact and away from digital return currents. Place the manufacturer's recommended input, reference, and supply-decoupling capacitors close to their associated pins, and provide a low-impedance ground reference beneath the SSOP where the layout rules permit it. Do not route the analog input beneath or immediately beside a switching-node trace because coupled transitions can appear directly in the measured result.
Account for the complete delta-sigma settling sequence rather than assuming that nominal 16-bit resolution appears immediately after a conversion request. The eight selectable digital filters and programmable decimation rates affect both output rate and latency. Establish an acquisition timing budget that includes analog settling, conversion, digital filtering, output latching, and serial transfer so the host controller does not sample stale conversion results.
Do not treat a converter with a similar resolution and package as a drop-in substitute. Verify the pin names, analog common-mode range, reference implementation, supply sequencing, clocking or serial protocol, filter behavior, and output-data format. The CS5529-AP has a 3-wire serial interface and a 6-bit output latch, so differences in host timing or data framing can prevent operation even when the PCB outline appears compatible.
合規資訊
The manufacturer product page identifies the CS5529 family as discontinued. Exact environmental and material compliance declarations should be confirmed for the CS5529-AP ordering code.
