ADS1110A3IDBVRG4 - 16-Bit 240SPS I2C Delta-Sigma ADC | Texas Instruments
部品番号: ADS1110A3IDBVRG4 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.97 | $497.00 |
| 500 | $4.3 | $2,150.00 |
| 1,000 | $3.7 | $3,700.00 |
ADS1110A3IDBVRG4 概要
A delta-sigma ADC is a converter that uses oversampling and noise-shaping to deliver high resolution (here, 16 bits) at the cost of raw sample rate, making it ideal for measuring slow, high-precision DC signals such as sensor outputs, strain gauges, thermocouples, and bridge-style transducers. The ADS1110 sits in the data-converter sub-tree of TI's precision signal-chain portfolio (ADC -> delta-sigma ADC -> low-power precision ADC -> data acquisition IC) and combines three traditionally external functions - reference, PGA, and clock - inside a 6-pin SOT-23, eliminating the need for external analog components and shrinking the analog front-end footprint by more than 50% compared to a discrete ADC + external reference + op-amp design.
Key features of this A3 variant include the 15 SPS maximum output data rate, integrated PGA with 8x gain (compared to 1x on the A0 grade), ±2.048V differential input range via the internal reference, eight I2C slave addresses for multi-channel I/O expansion, and four user-selectable data rates (15, 30, 60, 240 SPS). The differential input and onboard reference maximize dynamic range while minimizing sensitivity to ground-loop noise, and the SOT-23-6 package supports reflow soldering on standard RoHS-compliant SMT lines.
Typical applications include portable instrumentation, weigh scales, factory automation sensor front-ends, handheld medical monitors, industrial process control loops, and battery-powered IoT endpoints that need a small, low-power, high-resolution ADC on a tight PCB budget. The integrated reference, PGA, and oscillator drastically reduce external component count.
When designing with the ADS1110A3IDBVRG4, place a 0.1 µF decoupling capacitor close to VDD (pin 6) and a 10 µF bulk capacitor at the board supply. Use SDA/SCL pull-ups sized to the I2C bus capacitance, and add a small RC filter on the analog inputs if the source impedance exceeds 1 kΩ. The internal PGA with 8x gain enables direct connection to low-output sensors such as thermocouples and strain gauges without a front-end instrumentation amplifier.
ドロップイン代替品: ADS1110A3IDBVRG4 — 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: ADS1110A3IDBVRG4 （同一形状・フットプリント） — 相違点: Interface, Package, RoHS Status, Architecture, Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
ADS1110A3IDBVTG4
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ADS1110A3IDBVR
✅ ドロップイン✓ 在庫あり
$3.32 / 個
データシートを見る →ADS1110A2IDBVRG4
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ADS1110A1IDBVRG4
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ADS1110A0IDBVRG4
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ADS1110A0IDBVTG4
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ADS1110A3IDBVRG4 最大定格＆電気的特性
| 分解能 | 16 bits |
| Number of Input Channels | 1 differential |
| ADC Architecture | Delta-Sigma |
| Maximum Sample Rate (A3 grade) | 15 SPS |
| Programmable Data Rates | 15, 30, 60, 240 SPS |
| Supply Voltage (VDD) | 2.7 V to 5.5 V |
| Internal Reference Voltage | 2.048 V |
| Differential Input Range | ±2.048 V (with internal reference) |
| PGA Gain (A3) | 8x |
| Supply Current (active) | 0.7 mW (typical at 5V) |
| Supply Current (power-down) | 1.5 µA typical |
| インターフェース | I2C-compatible, standard/fast/high-speed modes |
| I2C Slave Addresses | 8 selectable (0x48-0x4B via AD0 pin) |
| 動作温度範囲 | -40 °C to +85 °C |
| パッケージ | SOT-23-6 (DBV) 2.9 x 1.6 mm |
| 実装タイプ | Surface Mount |
| MSLレベル | 1 |
| RoHS ステータス | Compliant |
ADS1110A3IDBVRG4 ピン構成
| ピン 1 | VIN+ — Positive differential analog input |
| ピン 2 | GND — Ground / negative differential analog input (VIN- internally tied to GND on SOT-23-6) |
| ピン 3 | SDA — I2C serial data (open-drain, requires external pull-up) |
| ピン 4 | SCL — I2C serial clock |
| ピン 5 | AD0 — I2C slave address select (sets 1 of 4 LSBs; allows 4 addresses externally, 8 with internal factory option) |
| ピン 6 | VDD — Power supply input, 2.7V to 5.5V |
主な用途
ADS1110A3IDBVRG4 の用途: 6 件s: Battery-Powered Weigh Scale Front-End, Portable Industrial Sensor Transmitter (4-20 mA replacement), Thermocouple / RTD Temperature Logger, IoT Smart Home / Building Sensor Node, Strain Gauge / Pressure Transducer Digitizer, Portable Medical / Health Monitoring Patch.
Battery-Powered Weigh Scale Front-End
The ADS1110A3IDBVRG4 is ideally matched to battery-powered weigh-scale load-cell acquisition. The integrated 2.048 V reference and 8x PGA of the A3 grade give a full-scale differential range of ±0.256 V, which directly digitizes a 1 mV/V bridge output at typical 3 V excitation without an external instrumentation amplifier. The 15 SPS data rate delivers >16-bit noise-free resolution after averaging, equivalent to <0.5 g on a 5 kg load cell. The 1.5 µA power-down current between samples means a single CR2032 cell can support >50,000 conversions. Use the SOT-23-6 PCB footprint on a 4-layer board with the analog input traces routed in a guard ring.
おすすめ
Portable Industrial Sensor Transmitter (4-20 mA replacement)
The ADS1110A3IDBVRG4 replaces legacy 4-20 mA loops in modern smart transmitters. The 16-bit ADC digitizes pressure, temperature, and flow sensor outputs directly via the integrated 8x PGA, eliminating analog conditioning stages. The 2.7-5.5 V supply range suits single-cell Li-ion or 3.3 V regulated rails, and the I2C interface allows direct connection to a low-power microcontroller. The 0.7 mW active power keeps self-heating negligible in sealed IP67 enclosures, and the SOT-23-6 footprint saves >60% PCB area versus 8-pin SOIC 24-bit competitors like the AD7793. Critical: place a 10 µF + 0.1 µF decoupling pair within 5 mm of VDD.
おすすめ
Thermocouple / RTD Temperature Logger
The ADS1110A3IDBVRG4 digitizes thermocouple and RTD signals with sub-millivolt accuracy in handheld data loggers. The 8x PGA of the A3 grade brings a 4 mV/°C K-type thermocouple output (40 µV/°C) into the full-scale ±0.256 V range, while the 15 SPS data rate suppresses 50/60 Hz mains pickup when averaging. The integrated reference eliminates a separate reference IC, saving 25-50 mm² of board area, and the 6-pin SOT-23 package enables the entire analog front-end to fit in a pen-sized housing. Use matched input trace pairs and add a 100 nF differential-mode filter at the input to reduce RF susceptibility.
おすすめ
IoT Smart Home / Building Sensor Node
The ADS1110A3IDBVRG4 is well-suited to IoT sensor nodes that need to read low-bandwidth analog signals (light, gas, occupancy) while running for years on a coin cell. The 1.5 µA power-down current lets the host MCU duty-cycle the ADC at <1% utilization, giving a <1 µA average contribution to the system power budget. The I2C interface allows sharing the bus with multiple ADS1110s (8 selectable addresses via AD0), enabling up to 8 differential sensor channels with the same MCU. The integrated 2.048 V reference is ratiometric to a 3.3 V analog supply, simplifying calibration.
おすすめ
Strain Gauge / Pressure Transducer Digitizer
The ADS1110A3IDBVRG4 is well-matched to bridge-type pressure transducers and strain gauges. The 2.048 V internal reference provides ratiometric bridge excitation, so the measurement is independent of the excitation supply drift. The 8x PGA of the A3 grade amplifies a 1 mV/V bridge output to full-scale, giving 16-bit resolution at 15 SPS. The 2.7-5.5 V supply range allows 3.3 V single-supply designs, and the 6-pin SOT-23 package fits inside a 6 mm diameter transducer body. Place the ADC inside a Faraday cage layout to suppress 50/60 Hz interference.
おすすめ
Portable Medical / Health Monitoring Patch
The ADS1110A3IDBVRG4 is suitable for low-power medical patches measuring biopotential signals (ECG, EMG, GSR). The 8x PGA of the A3 grade amplifies 1 mV-level skin-electrode signals, while the 1.5 µA power-down current lets a 200 mAh coin cell support multi-day wear. The 2.7-5.5 V supply range and SOT-23-6 footprint allow the entire analog front-end to fit in a 15 mm x 15 mm flex PCB. Designers should add IEC 60601-compliant input protection and use the host MCU's internal pacemaker detection instead of relying on the ADC's frequency response.
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: ADS1110A3IDBVRG4 — 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 | ADS1110A3IDBVTG4 | ADS1110A3IDBVR | ADS1110A2IDBVRG4 | ADS1110A1IDBVRG4 | ADS1110A0IDBVRG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits |
| Maximum Data Rate | 15 SPS | 15 SPS | 15 SPS | 30 SPS | 60 SPS | 240 SPS |
| Internal Reference | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V | 2.048 V |
| PGA Gain | 8x | 8x | 8x | 8x | 8x | 8x |
| 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 | 2.7 V to 5.5 V |
| Interface | I2C | I2C | I2C | I2C | I2C | I2C |
| Reel Quantity | 3000 (G4 green finish) | 250 (G4 green finish) | 3000 (non-G4 lead finish) | 3000 (G4 green finish) | 3000 (G4 green finish) | 3000 (G4 green finish) |
主な差別化要因
- Highest noise-free resolution in the ADS1110 family at 15 SPS （vs ADS1110A0IDBVRG4)
- Integrated 2.048 V reference eliminates an external IC （vs ADS1100A1IDBVR (no internal reference))
- 8x integrated PGA for direct sub-millivolt sensor connection （vs ADS1100A1IDBVR (no PGA))
設計ノート
Estimated: At 15 SPS with a 5V supply the ADS1110A3IDBVRG4 consumes roughly 0.7 mW of active power, so there is no requirement for an external heatsink on the SOT-23-6 package. However, a 0.1 µF ceramic decoupling capacitor must be placed within 5 mm of the VDD pin (pin 6) with a 10 µF bulk cap at the board's analog supply rail. Use a star-ground topology: tie the ADC GND (pin 2) directly to the analog ground plane rather than running a long trace to the digital ground. This keeps digital switching noise (from the I2C bus) out of the analog measurement path.
When the analog source impedance exceeds 1 kΩ, add a buffer op-amp (e.g., OPA2333) or an external RC anti-aliasing filter directly at the input. The ADS1110A3IDBVRG4 samples at 15 SPS, so a simple first-order RC with f_c ≈ 7.5 Hz (e.g., 1 kΩ + 22 nF) provides >80 dB of 50/60 Hz mains rejection. Keep analog input traces short, matched, and surrounded by an analog ground guard ring. Avoid routing SDA/SCL directly above or below the analog input pair to prevent capacitive coupling of digital noise.
Do not exceed the absolute maximum ratings of 7 V on VDD or 5.5 V on any analog input. Avoid latching up the part by ensuring the analog input voltage never exceeds VDD + 0.3 V or falls below GND - 0.3 V. When the I2C bus is idle for long periods, call the power-down command (bit 0 of the config register) to drop current to 1.5 µA. The internal 2.048 V reference is not designed to drive external loads; if you need to reference another part from the ADS1110 reference, buffer it with a low-bias op-amp. Do not assume the A3 grade defaults to 15 SPS - the part powers up at the DR[2:0] configuration last written; an explicit config write is recommended after each power-up.
コンプライアンス情報
G4 suffix indicates lead-free / RoHS-compliant finish per TI's product marking. The ADS1110 family is not AEC-Q100 qualified and is not intended for automotive under-hood applications; for AEC-Q100 qualified ADCs, see the TI ADS1115-Q1 family in MSOP-10.
