ADS131M08QPBSRQ1 - 24-Bit 32-kSPS 8-Ch ADC | Texas Instruments
部品番号: ADS131M08QPBSRQ1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ADS131M08QPBSRQ1 概要
A delta-sigma ADC is a type of analog-to-digital converter that oversamples the input signal and applies noise shaping to achieve very high resolution, typically 16 to 24 bits, making it the dominant architecture for precision measurement in the data-converter hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. Simultaneous sampling means all eight channels are digitized at the same instant, which is essential when measuring phase relationships, such as voltage and current waveforms in power metrology.
Key features include 8 simultaneously sampling differential inputs, 24-bit resolution at up to 32 kSPS per channel, AEC-Q100 qualification for automotive applications, and Functional Safety-Capable status with documentation available to support functional-safety system design. Low power consumption of 6.0 mW at 3 V keeps self-heating and channel-to-channel crosstalk effects minimal in compact layouts.
According to the TI product page, the ADC inputs can be directly interfaced to shunt resistors for bidirectional battery-current measurements and to resistor-divider networks for high-voltage sensing, which is why the ADS131M08-Q1 family is targeted at automotive battery management systems (BMS). The industrial-grade ADS131M08 shares the same core for energy metering, power metrology, and circuit-breaker applications.
The device communicates over an SPI-compatible serial interface with daisy-chain support, allowing multiple ADCs to share one microcontroller SPI port, a common requirement in BMS slave boards.
When designing with the ADS131M08QPBSRQ1, plan the OSR and clocking scheme first, since output data rate and effective resolution trade off directly; also provide a low-noise analog supply and clean reference path to realize the full 24-bit dynamic range.
This page synthesizes distributor pricing and availability, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
ドロップイン代替品: ADS131M08QPBSRQ1 — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ADS131M08QPBSRQ1 （同一形状・フットプリント） — 相違点: Number of Channels, Package, Interface, Sampling Rate, Application Focus.
クイック比較ツール — 並列比較する代替部品を選択:
ADS131M08IPBS
✅ ドロップイン✓ 在庫あり
$3.85 / 個
データシートを見る →ADS131M08IPBSR
✅ ドロップイン✓ 在庫あり
$6.6 / 個
データシートを見る →ADS131M06QPBSRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS131M06IPBS
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS131M04QPBSRQ1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ADS131B04QPBSRQ1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ADS131M08QPBSRQ1 最大定格＆電気的特性
| 分解能 | 24 bit |
| Number of Channels | 8 (simultaneous sampling, differential) |
| サンプリングレート | 32 kSPS |
| ADC Architecture | Delta-Sigma |
| Input Type | Differential |
| インターフェース | SPI (serial, daisy-chain capable) |
| Power Consumption | 6.0 mW at 3 V |
| 動作温度範囲 | -40C to +125C (AEC-Q100 temperature grade 1) |
| Qualification | AEC-Q100 qualified (automotive) |
| Functional Safety | Functional Safety-Capable (documentation available) |
| パッケージ | 32-TQFP (5x5 mm), PBS suffix |
| 実装タイプ | Surface Mount |
| Application Focus | Automotive BMS, energy metering, power metrology |
ADS131M08QPBSRQ1 32-tqfp (5x5 mm), pbs suffix ピン配置ガイド
ADS131M08QPBSRQ1 (32-tqfp (5x5 mm), pbs suffix 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: ADS131M08QPBSRQ1.
詳細は データシート をご参照ください。
主な用途
ADS131M08QPBSRQ1 の用途: 6 件s: Automotive Battery Management Systems (BMS), Energy Metering and Power Metrology, Circuit Breakers and Protection Relays, Shunt-Based Current Measurement Modules, High-Voltage Sensing via Resistor Dividers, Multi-Channel Industrial Data Acquisition.
Automotive Battery Management Systems (BMS)
The ADS131M08QPBSRQ1 was purpose-built for automotive BMS per the TI product page. Its eight simultaneous-sampling 24-bit channels let one device digitize multiple cell voltages plus a shunt-based pack-current measurement at the same instant, which is critical for accurate state-of-charge and state-of-health calculations where phase alignment matters. The differential inputs connect directly to shunt resistors for bidirectional current sensing and to resistor-divider networks for high-voltage monitoring, eliminating extra signal-conditioning stages. AEC-Q100 grade 1 operation (-40C to +125C) and Functional Safety-Capable documentation support ASIL-oriented system designs in EV battery packs.
おすすめ
Energy Metering and Power Metrology
The industrial ADS131M08 family is explicitly positioned by TI for energy metering and power metrology, and the Q1 variant serves the same function in automotive and grid-edge hardware. Simultaneous sampling of voltage and current channels enables accurate real power, reactive power, and RMS calculations across a wide dynamic range; the 24-bit resolution supports high-accuracy class metering without additional gain stages. Direct interfacing to resistor dividers and shunts simplifies the analog front end. The 32-kSPS output rate is ample for 50/60 Hz waveform capture with significant oversampling margin for harmonic analysis in circuit-breaker and submetering products.
おすすめ
Circuit Breakers and Protection Relays
TI lists circuit-breaker applications as a target for the ADS131M08 platform. Protection devices require simultaneous capture of multiple phase currents and voltages so that trip decisions can be based on accurately time-aligned waveforms; the eight simultaneous 24-bit channels of this ADC provide exactly that alignment with high overload headroom via external dividers. The wide dynamic range lets one device cover both precision load monitoring and fault-transient capture at 32 kSPS. Low 6.0 mW consumption at 3 V suits always-on auxiliary-power-limited protection electronics, and the SPI daisy-chain mode supports multi-breaker architectures sharing a single controller.
おすすめ
Shunt-Based Current Measurement Modules
The ADS131M08-Q1 datasheet states the ADC inputs can be directly interfaced to shunt resistors for bidirectional battery-current measurements. With 24-bit resolution and simultaneous sampling, a low-value shunt can be read directly without a dedicated programmable-gain front end for moderate current ranges, while an INA223-class amplifier can extend the range for high-current automotive loads. The differential inputs reject common-mode noise in the noisy electromagnetic environment near contactors and inverters. Functional Safety-Capable documentation further supports current-monitoring functions used in ASIL-rated torque-limiting and overcurrent-protection paths.
おすすめ
High-Voltage Sensing via Resistor Dividers
Per the TI product page, the ADC inputs interface directly to resistor-divider networks for high-voltage measurements such as DC-link and isolation-monitoring voltages in EV systems. The 24-bit delta-sigma core provides enough resolution to read a divided-down 800 V bus with fine granularity for leakage and isolation-resistance estimation. Simultaneous sampling with the current channels allows synchronized power calculations. Designers should size divider impedance against the ADC input characteristics and sample time specified in the datasheet to balance accuracy, drift, and settling, and use the low-power operating point to minimize divider self-heating effects.
おすすめ
Multi-Channel Industrial Data Acquisition
Beyond metering, the eight-channel simultaneous-sampling 24-bit architecture fits general precision DAQ front ends: vibration, strain-gauge bridge, and multi-sensor test stands all benefit from channel-to-channel phase alignment and 32-kSPS bandwidth. The SPI daisy-chain interface lets multiple ADS131M08 devices share one controller SPI port, scaling to 16, 24, or more synchronized channels without extra glue logic. Industrial designs can use the pin-identical ADS131M08IPBS to cut cost, keeping the QPBSRQ1 for any channel feeding automotive or safety-rated subsystems. The 6.0 mW operating point also suits battery-powered portable analyzers.
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: ADS131M08QPBSRQ1 — 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 | ADS131M08IPBS | ADS131M08IPBSR | ADS131M06QPBSRQ1 | ADS131M04QPBSRQ1 |
|---|---|---|---|---|---|
| Package | 32-TQFP (5x5 mm), PBS | 32-TQFP (5x5 mm) - same footprint | 32-TQFP (5x5 mm) - same footprint | 32-TQFP (5x5 mm) - same footprint | 32-TQFP (5x5 mm) - same footprint |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit |
| Sample Rate | 32 kSPS | 32 kSPS | 32 kSPS | 32 kSPS | 32 kSPS |
| Channels | 8 simultaneous differential | 8 simultaneous differential | 8 simultaneous differential | 6 simultaneous differential | 4 simultaneous differential |
| Qualification | AEC-Q100 grade 1 (automotive) | Industrial (not AEC-Q100) | Industrial (not AEC-Q100) | AEC-Q100 grade 1 (automotive) | AEC-Q100 grade 1 (automotive) |
主な差別化要因
- Automotive AEC-Q100 grade 1 qualification with Functional Safety-Capable documentation （vs ADS131M08IPBS)
- Eight simultaneous sampling channels in one package （vs ADS131M06QPBSRQ1)
- Low 6.0 mW power at 3 V （vs ADS131M04QPBSRQ1)
設計ノート
Because all eight channels sample simultaneously, channel-to-channel matching depends heavily on symmetric layout: route the differential input pairs of each channel with matched lengths and keep them away from the SPI clock lines. Place anti-aliasing RC filters (typical first-order differential RC per datasheet typical-application circuits) directly at each AINx pin. Ground returns for each shunt/divider should be Kelvin-connected to the ADC ground reference to preserve the 24-bit resolution the converter is capable of delivering.
The 32-TQFP (5x5 mm) package has a 0.8 mm lead pitch; design the land pattern per the TI datasheet mechanical section and keep the analog supply and reference decoupling capacitors within a few millimeters of the corresponding pins. Separate the analog ground region under the ADC from the digital SPI routing area, joining at a single point near the supply. For automotive boards, provide series termination on SPI clock lines to control ringing in the noisy in-vehicle environment.
Estimated: at 6.0 mW dissipation (3 V supply, per verified data), junction rise is negligible (on the order of 1-2 C for typical theta_JA of a 32-TQFP), so no heatsinking is required; thermal design effort should instead focus on the shunt resistor and divider networks in the measurement path. Apply clean, low-noise analog AVDD and a stable reference; power-supply noise directly limits achievable effective resolution, so consider an LC filter or LDO feeding the ADC supply rail in BMS environments with switching regulators.
Do not confuse ordering codes: only the QPBSRQ1 (ADS131M08-Q1 family) carries AEC-Q100 grade 1 and Functional Safety-Capable documentation; the IPBS industrial part is electrically similar but is not automotive qualified. Also verify channel count before BOM substitution - ADS131M06/M04 variants share the package but provide fewer channels, which will silently drop measurement points. When using daisy-chain SPI mode, confirm frame-sync timing against the datasheet serial timing table with the full chain length.
コンプライアンス情報
AEC-Q100 qualified for automotive applications, temperature grade 1: -40C to +125C (TA), per TI datasheet summary. Functional Safety-Capable with documentation available. RoHS/REACH/lead-free status not stated in verified data - confirm on TI product page quality section.
