ADS1262IPWR - 32-Bit 38-kSPS Delta-Sigma ADC | Texas Instruments
部品番号: ADS1262IPWR ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.95 | $89.50 |
| 100 | $8.12 | $812.00 |
| 500 | $7.55 | $3,775.00 |
| 1,000 | $6.98 | $6,980.00 |
ADS1262IPWR 概要
A delta-sigma ADC is a type of analog-to-digital converter that oversamples the input signal and applies digital filtering to achieve extremely high resolution, typically in the 24-bit to 32-bit class. Within the signal-chain hierarchy, the delta-sigma ADC sits between the analog front end (sensors, bridges) and the digital controller, and in this device the category is pushed further toward single-chip integration because the PGA and reference are built in, replacing several external precision components.
Key features include 32-bit resolution with noise performance specified down to the nanovolt level at low data rates, an integrated PGA that amplifies small bridge and thermocouple signals directly, an on-chip low-drift voltage reference, and internal fault monitors for sensor diagnostics. The device is fully specified over the -40C to +125C industrial temperature range.
Architecturally, the ADS1262 combines the delta-sigma modulator with programmable digital filtering, allowing trade-offs between output data rate (up to 38.4 kSPS) and noise. According to the TI ADS126x datasheet, the ADS1262 and ADS1263 family adds an auxiliary 24-bit delta-sigma ADC in the ADS1263 variant for background measurements, while both parts are pin and functionally compatible.
Typical applications include weigh scales and load-cell front ends, factory automation and process-control analog inputs, and precision sensor measurement such as thermocouples and RTDs, where high accuracy and one-chip integration reduce board area and calibration effort.
Design consideration: at the lowest data rates the device achieves its best noise floor, so select the output data rate and PGA gain together to match sensor sensitivity rather than defaulting to maximum speed.
This page synthesizes distributor availability, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
ドロップイン代替品: ADS1262IPWR — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
ADS1263IPWR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1262IPWR 最大定格＆電気的特性
| 分解能 | 32 bit |
| Number of Channels | 11 input (10-ch multiplexed inputs per Mouser listing) |
| Converter Type | Sigma-Delta (Delta-Sigma), 1x modulator |
| Maximum Sampling Rate | 38.4 kSPS |
| Integrated PGA | Yes |
| Integrated Voltage Reference | Yes |
| Fault Monitors | Internal fault monitors |
| インターフェース | SPI-compatible serial interface |
| 動作温度範囲 | -40C to +125C |
| パッケージ | 28-pin TSSOP (PW) |
| 実装タイプ | Surface Mount |
| Description | 32-Bit, Precision, 38-kSPS, Analog-to-Digital Converter (ADC) |
| Family | ADS126x (ADS1262 / ADS1263 pin and functional compatible) |
| Typical Applications | Factory automation, weigh scales, sensor measurement |
| Noise Performance | Low-noise, low-drift (per TI ADS126x datasheet) |
ADS1262IPWR 28-pin tssop (pw) ピン配置ガイド
ADS1262IPWR (28-pin tssop (pw) パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: ADS1262IPWR.
詳細は データシート をご参照ください。
主な用途
ADS1262IPWR の用途: 6 件s: Weigh Scales and Load-Cell Measurement, Factory Automation Analog Input Modules, Thermocouple and RTD Precision Temperature Measurement, Process Control and Data Acquisition Systems, Battery-Powered Portable Instrumentation, Test and Measurement Front Ends.
Weigh Scales and Load-Cell Measurement
The ADS1262IPWR is explicitly positioned by TI as a sensor-ready ADC for weigh scale applications. Load-cell bridge outputs are typically in the single-digit millivolt range at full scale; the integrated PGA gains these signals directly, and the 32-bit delta-sigma converter resolves the microvolt-level increments required for high-count scales. The on-chip low-drift voltage reference can be ratiometric to the bridge excitation, cancelling excitation drift from the measurement. Placed immediately after the bridge with short differential routing and an anti-alias filter at the modulator input, the device converts at data rates of a few SPS to tens of SPS where its noise floor is lowest, delivering laboratory-grade weighing in one chip without external instrumentation amplifiers or precision references.
おすすめ
Factory Automation Analog Input Modules
TI lists the ADS1262IPWR as a 32-bit, 38-kSPS, 10-channel delta-sigma ADC with PGA and voltage reference for factory automation. PLC and distributed-I/O analog input cards benefit from the multiplexed 11-input front end, which measures multiple 4-20 mA current loops, RTDs, and thermocouples through one converter, cutting cost and board area versus one ADC per channel. The internal fault monitors detect open and shorted sensor wiring, a diagnostic requirement in industrial modules. The -40C to +125C specification covers control-cabinet temperatures, and the SPI interface connects directly to the module microcontroller. At the 38.4-kSPS maximum rate a full channel scan completes quickly enough for machine-control loop updates.
おすすめ
Thermocouple and RTD Precision Temperature Measurement
Thermocouple signals are tens of microvolts per degree C, and RTD measurements depend on resolving small resistance changes ratiometrically. The ADS1262IPWR addresses both: its low-noise, low-drift front end resolves microvolt thermocouple signals with the PGA set to high gain, and its integrated reference supports true ratiometric RTD measurement, in which the same reference drives both the RTD excitation and the ADC, so reference drift cancels. The internal fault monitors flag open thermocouple conditions automatically, replacing discrete burnout-detection circuitry. Conversions taken at low data rates maximize effective resolution, allowing sub-0.1C accuracy over the -40C to +125C ambient range specified for the device.
おすすめ
Process Control and Data Acquisition Systems
Industrial process transmitters and distributed data acquisition systems demand both accuracy and channel density. The ADS1262IPWR's multiplexed inputs let one converter service multiple pressure, flow, and level transmitters, while the 38.4-kSPS maximum data rate supports the scan rates typical of process loop updates. The integrated PGA accommodates transmitters spanning 0-20 mA shunt inputs to low-level millivolt signals without external gain stages. The internal fault monitors support the diagnostic coverage (such as sensor open-circuit detection) demanded by modern functional-safety-influenced designs. Because the ADS1263 is pin compatible, a system can later add a background 24-bit conversion channel without any PCB respin.
おすすめ
Battery-Powered Portable Instrumentation
Portable and battery-powered measurement instruments benefit from the ADS1262IPWR's high integration: PGA, reference, fault monitors, and 32-bit converter in one 28-pin TSSOP reduce total bill of materials and quiescent power versus a discrete signal chain. The device can be duty-cycled - the SPI interface allows the host MCU to place the converter between conversions, and at low output data rates the modulator runs only as needed. Field instruments such as handheld scales, environmental meters, and portable analyzers use low data-rate conversions where the 32-bit converter achieves its best noise performance, enabling high-resolution readings directly from small battery-cell-powered analog front ends.
おすすめ
Test and Measurement Front Ends
Bench instruments, sensor qualifiers, and calibration rigs require the nanovolt-to-microvolt resolution that a 32-bit delta-sigma converter provides. The ADS1262IPWR's low-drift integrated reference and PGA let a USB or bench instrument digitize small differential signals directly, and the programmable data rate supports a trade-off panel: 38.4 kSPS for responsive acquisition or low rates for maximum-resolution DC measurements. The internal fault monitors simplify input protection diagnostics when operators misconnect leads. Designers should provide a clean analog supply and a solid ground plane, since at maximum resolution the converter will faithfully expose any upstream noise in the analog front end.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADS1262IPWR — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADS1263IPWR |
|---|---|---|
| Package | 28-pin TSSOP (PW) | 28-pin TSSOP (PW) - same |
| Brand | Texas Instruments | Texas Instruments |
| Resolution (Main ADC) | 32 bit | 32 bit (+ 24-bit auxiliary ADC) |
| Maximum Data Rate | 38.4 kSPS | 38.4 kSPS |
| Integrated PGA | Yes | Yes |
| Integrated Voltage Reference | Yes | Yes |
| Auxiliary Background ADC | No | Yes (24-bit delta-sigma) |
| Temperature Range | -40C to +125C | -40C to +125C |
| Pin Compatibility | ADS126x family | Pin and functional compatible (per TI) |
主な差別化要因
- Single-chip signal chain integration （vs ADS1256-class 24-bit ADCs)
- 32-bit resolution for high-count measurements （vs ADS1256)
- Upgrade path to background-channel conversion （vs ADS1263IPWR)
設計ノート
The ADS1262 resolves microvolt-level signals, so layout dominates achievable accuracy. Use a solid, unbroken ground plane under the converter and keep the differential sensor routing to INP/INN short, matched, and away from digital SPI traces. Place a differential RC anti-alias filter directly at the analog inputs per the datasheet's typical application circuit, with the common-mode capacitors matched so input impedance imbalance does not degrade CMRR. Separate the analog supply domain from the digital supply domain and route the SPI clock away from the reference pins.
Because the ADS1262 multiplexes 11 inputs into one delta-sigma modulator, changing channels mid-scan requires settling of the digital filter; ignoring the filter settling latency between multiplexer switches is the most common cause of crosstalk and gain error in multi-channel designs. Consult the datasheet's digital interface and data-format sections for the exact conversion-ready timing. Also note that noise improves at lower data rates - running at 38.4 kSPS when the application needs 10 SPS wastes resolution, so configure the data rate and PGA gain together for the sensor in question.
Estimated: total power dissipation of the TSSOP-28 package at typical analog and digital supply currents is in the tens of milliwatts, so thermal design is rarely limiting for this device. The more important power-supply consideration is noise: the analog supply should come from an LDO with adequate PSRR at the modulator clock rate, and the reference inputs should be decoupled per the datasheet reference section. If a switching converter feeds the analog rail, add an LC filter or an LDO post-regulator to prevent ripple from aliasing into the conversion band.
コンプライアンス情報
Compliance details were not present in the provided web data; consult the TI product page at ti.com/product/ADS1262 for current RoHS/REACH status.
