ADS1256IDBR - 24-Bit 30kSPS Delta-Sigma ADC | Texas Instruments
料号： ADS1256IDBR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ADS1256IDBR 概述
A delta-sigma ADC is an analog-to-digital converter category that uses oversampling, noise shaping, and digital filtering to achieve high resolution. The ADS1256 belongs to the broader hierarchy of ADC, data-converter IC, signal-conditioning IC, and analog semiconductor devices. Its sigma-delta architecture is especially useful when high precision and noise performance matter more than very high bandwidth.
The verified product information identifies a 24-bit conversion resolution, data rates up to 30kSPS, four differential or eight single-ended input choices, integrated PGA functionality, and a 28-SSOP package. These characteristics make the device suitable for precision current, voltage, resistance, and sensor measurements where the input bandwidth is limited. The manufacturer product page positions the device for factory automation and process control.
The integrated PGA supports conditioning of low-level sensor outputs before conversion, while the programmable digital filter helps reject out-of-band noise. The four-wire serial interface supports digital control and data transfer, although signal timing, clocking, reference selection, and filter configuration must be implemented according to the manufacturer datasheet. The part is identified as a 28-SSOP device and is not a power semiconductor, so SOA data are not applicable.
Typical applications include pressure and temperature measurement, industrial process monitoring, load-cell signal acquisition, laboratory instrumentation, and low-bandwidth sensor interfaces. The 30kSPS maximum data output rate is useful for many measurement loops, but it does not make the ADC suitable for high-frequency waveform acquisition. Input filtering, grounding, reference stability, and digital timing remain important for achieving predictable results.
For PCB implementation, use a clean analog supply and ground structure, place input and reference components close to the converter, and keep digital communication traces away from sensitive analog nodes. Review the manufacturer datasheet for the exact pin names, recommended input network, reference requirements, and timing limits. This page combines the verified manufacturer and distributor information with application guidance and transparent data-gap markers.
The main engineering tradeoff is that the ADS1256 prioritizes high-resolution, low-noise delta-sigma measurement over high-speed conversion. It is a strong fit for slow, precise industrial signals, but a different ADC architecture may be preferable when sampling many high-frequency points or handling substantially wider bandwidth.
直接替换替代料： ADS1256IDBR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADS1256IDBR （相同外形与封装尺寸） ——差异在于 Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
ADS1256IDBT
✅ 直接替换📋 参考替代料（不在目录中）
ADS1255IDBR
✅ 直接替换✓ 有现货
$6.2373 / 个
查看数据手册 →ADS1256IDBR 最大额定值与电气特性
| 分辨率 | 24 bit |
| Maximum Data Output Rate | 30 kSPS |
| Input Configuration | 4 differential or 8 single-ended inputs |
| Converter Architecture | Fourth-order delta-sigma modulator with programmable digital filter |
| Programmable Gain Amplifier | Integrated |
| 封装 | 28-pin SSOP |
| 工作温度 | -40 °C to +85 °C |
| Application Category | Factory automation and process control |
| 接口类型 | Serial digital interface |
| Digital Filter | Programmable |
| 安装类型 | Surface mount |
| MSL 等级 | 2 (260 °C, 1 year) |
| RoHS 状态 | ROHS3 compliant |
| REACH Status | unknown |
| AEC-Q100 Status | unknown |
| Lead-Free Status | unknown |
| Halogen-Free Status | unknown |
ADS1256IDBR 28-pin ssop 引脚配置指南
ADS1256IDBR（28-pin ssop 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： ADS1256IDBR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADS1256IDBR 适用于 6 应用s: Factory Pressure Measurement, Industrial Temperature Sensing, Load-Cell Signal Acquisition, Precision Current Monitoring, Laboratory Instrumentation, Process-Level Measurement.
Factory Pressure Measurement
ADS1256IDBR fits slow, high-resolution factory pressure monitoring because it combines 24-bit conversion resolution with four differential inputs and an integrated programmable gain amplifier. The PGA can help bring a low-level bridge or transmitter signal into the converter’s usable measurement range, while the programmable digital filter helps reject noise outside the selected measurement bandwidth. The 30kSPS maximum output rate provides margin for digital filtering and control-loop calculations, although the converter is not intended for high-frequency pressure transients. Texas Instruments identifies factory automation and process control as a primary application. The designer should verify input range, reference voltage, sensor excitation, filter settling, and calibration behavior against the ADS1256 datasheet before finalizing analog scaling.
推荐
Industrial Temperature Sensing
ADS1256IDBR is well matched to precision temperature-sensor acquisition when the measurement bandwidth is moderate and high resolution is valuable. Four differential inputs support isolated pairs of sensing channels, and eight single-ended inputs can serve simpler unipolar sensor arrangements. The integrated programmable gain amplifier allows the front end to accommodate small sensor signals without relying on a separate gain stage, while the fourth-order delta-sigma modulator and programmable digital filter support low-noise acquisition. The design must still account for thermocouple cold-junction compensation, RTD excitation, sensor-specific lead resistance, and the required settling time. ADS1256IDBR is therefore best for precision process monitoring rather than ultrafast thermal waveform capture.
推荐
Load-Cell Signal Acquisition
The ADS1256IDBR can serve as the core ADC for a load-cell front end because its four differential inputs are suited to bridge-derived differential signals and its integrated PGA is designed for precision analog measurement. A bridge excitation, input protection network, reference, and output filtering must be designed around the converter’s electrical limits. The 24-bit resolution helps preserve small full-scale readings, while the programmable digital filter can suppress noise when the load changes more slowly than the selected output rate. For dynamic force measurement, verify settling time and bandwidth; for weighing and force-gauge applications, calibration drift, reference stability, and channel switching are likely more important than maximum sampling rate.
推荐
Precision Current Monitoring
ADS1256IDBR can measure low-level current signals in industrial power and process-control equipment when the current sensor produces a differential voltage within the ADC’s supported input range. Differential input support reduces sensitivity to common-mode voltage, while the integrated PGA improves use of the converter’s measurement span for small shunt or current-transformer outputs. The programmable digital filter helps reject ripple and out-of-band noise, but the filter and data-rate settings determine settling behavior. Designers should verify the actual common-mode range, input impedance, shunt or transformer bandwidth, reference accuracy, and electrical limits in the manufacturer datasheet. The 30kSPS ceiling is useful for many monitoring loops but does not make this converter suitable for high-bandwidth current waveform analysis.
推荐
Laboratory Instrumentation
ADS1256IDBR is suitable for laboratory and test equipment that measures slow, precision sensor outputs and requires multiple analog channels. Four differential inputs can support balanced sensor bridges, current loops, or paired measurements, while eight single-ended inputs provide flexibility for multiplexed channels. The programmable digital filter allows the instrument designer to optimize noise rejection for a particular measurement bandwidth, and the 24-bit resolution supports high-resolution displayed values. However, the converter must be paired with a suitable excitation source, reference, protection network, and calibration strategy. For a laboratory product, verify settling after channel selection, digital-interface timing, and the required measurement accuracy before choosing filter and data-rate settings.
推荐
Process-Level Measurement
ADS1256IDBR is a practical fit for tank-level, valve-position, and other process-control measurements where the analog signal changes slowly and accurate repeatable readings matter. The differential input structure can help reject common-mode noise in industrial wiring, and the integrated PGA simplifies conditioning of low-level sensor outputs. The programmable digital filter provides a way to reject process noise, but excessive filtering may slow the control response. Designers should choose the data rate and filter based on the process time constant, then include calibration for sensor offset, gain, and reference drift. The manufacturer’s factory-automation and process-control positioning directly supports this use, while the electrical limits and pin-specific implementation must be confirmed in the TI ADS1256 datasheet.
推荐
推荐产品汇总
工程参考数据： ADS1256IDBR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADS1256IDBT | ADS1255IDBR |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin SSOP | 28-pin SSOP family option; verify ordering table | 28-pin SSOP family option; verify exact ordering table |
关键差异点
- High-resolution precision conversion （对比 ADS1256IDBT)
- Integrated measurement conditioning （对比 ADS1255IDBR)
- Process-control positioning （对比 ADS1262IPWR)
设计说明
Place analog input and reference components close to their associated ADS1256 pins, and route sensitive analog traces away from serial interface lines. The supplied verified data identifies a 28-pin SSOP package but does not provide exact trace-length or component-placement requirements. Use the Texas Instruments ADS1256 datasheet and layout guidance for final capacitor placement, grounding, and signal-return design. Estimated design work should be reviewed against the complete electrical table rather than inferred from the package outline.
Choose the data rate and programmable digital-filter settings together. A more aggressive filter can improve rejection of process and sensor noise, but it may increase settling time after a channel change or step input. The verified product information confirms 30kSPS maximum output rate and programmable filtering, but it does not provide filter-response values or settling-time numbers. Record the selected configuration and validate latency in the final analog and firmware design.
Do not treat ADS1256IDBT, REF200AU, or ADS1262IPWR as an automatic drop-in replacement. The supplied cross-reference results identify these as related comparison leads, but they do not verify a complete pinout, supply, interface, channel-count, and electrical match for ADS1256IDBR. In particular, REF200AU is a reference-device lead rather than a direct ADC replacement. Validate the exact manufacturer package, pin assignment, and acquisition protocol before releasing a substitute into production.
The verified excerpts do not provide the ADC supply-voltage limits or power-consumption values, so a power budget cannot be calculated responsibly from the available data. Confirm analog and digital supply requirements, reference current, digital-interface current, and operating temperature against the Texas Instruments ADS1256 datasheet. Estimated dissipation values based on guessed voltages would not be reliable for this part and are intentionally not supplied.
合规信息
The supplied PartGenie result identifies ADS1256IDBR as ROHS3 compliant and states MSL level 2-260C-1 YEAR. REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status are not verified in the supplied data.