ADS1110A3IDBVRG4 - 16-Bit 240SPS I2C Delta-Sigma ADC | Texas Instruments
N.º de pieza: ADS1110A3IDBVRG4 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 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 Descripción general
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.
Alternativas directas para ADS1110A3IDBVRG4 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADS1110A3IDBVRG4 (mismo factor de forma y huella) — difiere en Interface, Package, RoHS Status, Architecture, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADS1110A3IDBVTG4
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ADS1110A3IDBVR
✅ Sustitución directa✓ En stock
$3.32 / unidad
Ver hoja de datos →ADS1110A2IDBVRG4
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ADS1110A1IDBVRG4
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ADS1110A0IDBVRG4
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ADS1110A0IDBVTG4
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ADS1110A3IDBVRG4 Valores máximos y características eléctricas
| Resolución | 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 |
| Interfaz | I2C-compatible, standard/fast/high-speed modes |
| I2C Slave Addresses | 8 selectable (0x48-0x4B via AD0 pin) |
| Rango de temperatura de funcionamiento | -40 °C to +85 °C |
| Encapsulado | SOT-23-6 (DBV) 2.9 x 1.6 mm |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 1 |
| Estado RoHS | Compliant |
Configuración de pines de ADS1110A3IDBVRG4
| Pin 1 | VIN+ — Positive differential analog input |
| Pin 2 | GND — Ground / negative differential analog input (VIN- internally tied to GND on SOT-23-6) |
| Pin 3 | SDA — I2C serial data (open-drain, requires external pull-up) |
| Pin 4 | SCL — I2C serial clock |
| Pin 5 | AD0 — I2C slave address select (sets 1 of 4 LSBs; allows 4 addresses externally, 8 with internal factory option) |
| Pin 6 | VDD — Power supply input, 2.7V to 5.5V |
Aplicaciones típicas
ADS1110A3IDBVRG4 es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADS1110A3IDBVRG4 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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) |
Diferenciadores clave
- Highest noise-free resolution in the ADS1110 family at 15 SPS (frente a ADS1110A0IDBVRG4)
- Integrated 2.048 V reference eliminates an external IC (frente a ADS1100A1IDBVR (no internal reference))
- 8x integrated PGA for direct sub-millivolt sensor connection (frente a ADS1100A1IDBVR (no PGA))
Notas de diseño
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.
Información de cumplimiento
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.
