ADS1100A3IDBVRG4 - 16-Bit Self-Calibrating I2C ADC | Texas Instruments
部品番号: ADS1100A3IDBVRG4 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.35 | $335.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.55 | $2,550.00 |
ADS1100A3IDBVRG4 概要
A delta-sigma (sigma-delta) ADC is a type of oversampling converter that uses a modulator loop and a digital decimation filter to achieve high resolution at low bandwidth. Within the broader converter taxonomy it belongs to the precision-ADC family, sitting between successive-approximation register (SAR) ADCs (faster, lower-resolution) and integrating ADCs (slowest, highest noise-rejection). The ADS1100 integrates the modulator, digital filter, PGA, and I2C interface into a single chip, making it a complete data-acquisition system in a tiny SOT-23-6 footprint suitable for board-constrained designs.
Key features include a maximum integral nonlinearity (INL) of 0.0125% of full-scale range, no missing codes at 16 bits, continuous self-calibration, single-cycle conversion, PGA gains of 1, 2, 4, or 8, and low noise of 4 uVp-p. The continuous self-calibration scheme removes offset and gain drift in real time, eliminating the periodic user calibration required by many competing converters and simplifying long-running sensor measurements.
Typical applications include portable instrumentation, weigh scales, industrial process control, factory-automation analog front-ends, battery monitors, and consumer sensor read-out boards where a small footprint, low power consumption, and I2C connectivity outweigh the need for higher sample rates or true differential bipolar inputs. The ratiometric conversion principle makes the ADS1100 especially attractive for bridge sensor measurements powered by the same rail as the ADC.
A key design consideration is the supply used as the reference: any noise or drift on VDD appears directly in the conversion, so a clean, low-impedance supply with adequate decoupling is essential. The ADS1100A3IDBVRG4 is supplied on a 3000-piece tape-and-reel and is qualified for the -40 C to +85 C industrial temperature range.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for selection, sourcing, and PCB implementation guidance.
ドロップイン代替品: ADS1100A3IDBVRG4 — 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: ADS1100A3IDBVRG4 （同一形状・フットプリント） — 相違点: Architecture, Reference, Resolution.
クイック比較ツール — 並列比較する代替部品を選択:
ADS1100A0IDBVRG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1100A4IDBVRG4
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ADS1100A5IDBVRG4
✅ ドロップイン✓ 在庫あり
$2.4 / 個
データシートを見る →ADS1100A1IDBVRG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1110A1IDBVR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MCP3421A0T-E/CH
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1100A3IDBVRG4 最大定格＆電気的特性
| 分解能 | 16 bits |
| Number of Input Channels | 1 differential |
| Architecture | Delta-Sigma (Sigma-Delta) |
| Data Rate (programmable) | 8 / 16 / 32 / 128 SPS |
| 電源電圧 | 2.7 V to 5.5 V |
| Integral Nonlinearity (INL) max | 0.0125 % of FSR |
| No Missing Codes | 16 bits guaranteed |
| プログラマブルゲインアンプ（PGA） | 1, 2, 4, 8 |
| Input-Referred Noise | 4 uVp-p |
| Reference | VDD (ratiometric, internal) |
| Digital Interface | I2C-compatible, standard / fast mode |
| I2C Slave Address (A3 variant) | 0x48 (ADDR=GND) / 0x4A (ADDR=VDD) |
| 動作温度 | -40 C to +85 C |
| パッケージ | SOT-23-6 (DBV) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
| Conversion Mode | Single-cycle, continuous, self-calibrating |
ADS1100A3IDBVRG4 ピン構成
| ピン 1 | ADDR — I2C address select (GND or VDD selects between two device addresses) |
| ピン 2 | VDD — Power supply input (2.7 V to 5.5 V); also used as ratiometric ADC reference |
| ピン 3 | GND — Ground return for supply and signal |
| ピン 4 | SDA — I2C serial data (open-drain, requires pull-up to VDD) |
| ピン 5 | SCL — I2C serial clock input |
| ピン 6 | VIN+/VIN- — Differential analog input (positive and negative tied together at the pin) |
主な用途
ADS1100A3IDBVRG4 の用途: 6 件s: Portable Weigh Scales and Load Cells, Industrial Process Control Analog Front-Ends, Battery Monitoring and Portable Instrumentation, Consumer Sensor Read-Out Boards, Factory Automation Sensor Interfaces, Medical and Wellness Monitoring Devices.
Portable Weigh Scales and Load Cells
The ADS1100A3IDBVRG4 fits weigh-scale designs because its PGA gains of 1/2/4/8 directly amplify low-level bridge outputs while the 16-bit no-missing-code resolution captures weight granularity required for commercial scales. The ratiometric conversion uses VDD as the reference, so the bridge excitation supply and ADC reference are the same node, eliminating reference-mismatch error. According to the TI ADS1100 datasheet, the continuous self-calibration loop removes offset and gain drift every conversion, eliminating the periodic user calibration demanded by competing ADCs. With 128 SPS maximum data rate and SOT-23-6 footprint, the part supports handheld scales where PCB area is at a premium and battery life depends on low active current.
おすすめ
Industrial Process Control Analog Front-Ends
The ADS1100A3IDBVRG4 is well suited to industrial 4-20 mA loop digitization and process-variable monitoring because the differential input rejects common-mode noise from long sensor cables. The integrated PGA simplifies signal conditioning for thermocouple and RTD bridge circuits, while the I2C interface lets multiple ADS1100s share a single controller bus for multi-channel monitoring. With -40 C to +85 C industrial temperature range and self-calibration, the part maintains accuracy in unattended factory environments. Per the TI datasheet, the 2.7 V to 5.5 V supply range accommodates both 3.3 V and 5 V industrial rails without level shifters.
おすすめ
Battery Monitoring and Portable Instrumentation
The ADS1100A3IDBVRG4 is ideal for battery-powered handheld instruments because its low supply current and 2.7 V minimum operation extend runtime on single-cell Li-ion packs. The ratiometric measurement makes it straightforward to read battery voltage, current-sense amplifier outputs, and thermistor bridges with one ADC and no precision reference. The SOT-23-6 footprint occupies minimal PCB area in compact handheld designs, while the I2C interface connects directly to low-power MCUs. According to the TI ADS1100 datasheet, the 8 SPS low-rate mode further reduces active current for always-on sensor sampling in IoT-style endpoints.
おすすめ
Consumer Sensor Read-Out Boards
The ADS1100A3IDBVRG4 serves consumer sensor hubs that digitize potentiometers, force-sensitive resistors, and analog joystick outputs, where the integrated PGA amplifies low-amplitude sensor signals and the I2C interface minimizes MCU pin count. The 16-bit resolution captures fine user-input granularity, while the self-calibration routine keeps the response drift-free over the product lifetime. Per the TI datasheet, the 4 uVp-p input-referred noise floor is low enough for haptic-feedback and gaming peripherals. The SOT-23-6 package supports ultra-compact consumer form factors.
おすすめ
Factory Automation Sensor Interfaces
The ADS1100A3IDBVRG4 enables factory-automation analog front-ends that read strain gauges, pressure sensors, and flow-meter bridges, taking advantage of the on-chip PGA to amplify milli-volt-level signals without external instrumentation amplifiers. The differential input rejects the large common-mode noise present on long factory cabling, while the self-calibration loop guarantees long-term stability in continuous-duty installations. The I2C bus simplifies wiring to a PLC or industrial MCU, and the 6-pin SOT-23-6 footprint fits densely populated sensor-interface cards. Per the TI datasheet, the industrial temperature range and ratiometric reference suit 24 V-bus-derived 5 V or 3.3 V supply rails.
おすすめ
Medical and Wellness Monitoring Devices
The ADS1100A3IDBVRG4 supports low-power medical and wellness devices such as body-worn thermistor bridges, respiration sensors, and body-impedance measurement front-ends that require high-resolution, low-noise digitization. The 16-bit resolution and continuous self-calibration capture small physiological signals accurately, while the integrated PGA eliminates external instrumentation amplifiers in space-constrained wearables. The ratiometric conversion removes dependence on absolute voltage references, simplifying FDA-style design-history documentation. Per the TI datasheet, the I2C interface shares a bus with low-power medical MCUs for compact, low-BOM wellness products.
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: ADS1100A3IDBVRG4 — 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 | ADS1100A0IDBVRG4 | ADS1100A4IDBVRG4 | ADS1110A1IDBVR | MCP3421A0T-E/CH |
|---|---|---|---|---|---|
| Package | SOT-23-6 | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 18 bits |
| Max Data Rate | 128 SPS | 128 SPS | 128 SPS | 240 SPS | 60 SPS (18-bit) |
| Input Channels | 1 differential | 1 differential | 1 differential | 1 differential (true bipolar) | 1 differential |
| PGA Gains | 1 / 2 / 4 / 8 | 1 / 2 / 4 / 8 | 1 / 2 / 4 / 8 | 1 / 2 / 4 / 8 | 1 / 2 / 4 / 8 |
| Interface | I2C | I2C | I2C | I2C | I2C |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
主な差別化要因
- Continuous self-calibration eliminates periodic user calibration （vs ADS1110A1IDBVR)
- Smallest 16-bit I2C ADC footprint in TI portfolio （vs MCP3421A0T-E/CH)
- Programmable data rate (8/16/32/128 SPS) optimizes noise vs speed per channel （vs ADS1100A0IDBVRG4)
設計ノート
The ADS1100A3IDBVRG4 uses VDD as the ratiometric reference, so any noise or drift on VDD directly couples into the conversion result. Place a 100 nF ceramic decoupling capacitor within 2 mm of the VDD pin and a 10 uF bulk capacitor on the same rail. If VDD is shared with switching converters, add a ferrite bead or pi-filter between the switching node and the ADC supply pin to attenuate switching noise that would otherwise alias into the measurement.
Route the differential analog input traces as a tightly coupled pair with equal length and minimal capacitance to ground to preserve differential balance. Keep digital I2C traces (SDA, SCL) physically separated from the analog input pin trace to avoid capacitive coupling that adds digital switching noise to the analog front-end. Per the TI ADS1100 datasheet layout recommendations, a continuous ground plane under the analog traces further reduces common-mode pickup on long sensor cables.
Add external I2C pull-up resistors (typically 4.7 kohm for 100 kHz standard mode, 2.2 kohm for 400 kHz fast mode) to VDD; the ADS1100 has open-drain SDA and SCL drivers and requires external pull-ups to function. Keep total bus capacitance below 400 pF to meet I2C timing margins. Place pull-ups at the bus master end when possible to minimize rise-time asymmetry that can cause missed acknowledge pulses.
コンプライアンス情報
RoHS and lead-free compliance per the G4 suffix and TI product page. The part is not AEC-Q100 qualified and is targeted at industrial and consumer applications.