ADS1100A6IDBVRG4 - 16-Bit I2C ADC with PGA, SOT-23-6 | TI
N.º de pieza: ADS1100A6IDBVRG4 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.18 | $6,18 |
| 10 | $5.52 | $55,20 |
| 100 | $4.66 | $466,00 |
| 500 | $3.88 | $1.940,00 |
| 1.000 | $3.27 | $3.270,00 |
ADS1100A6IDBVRG4 Descripción general
An ADC (analog-to-digital converter) is a data-acquisition component that converts continuous analog signals into discrete digital codes; delta-sigma ADCs in particular use oversampling and noise shaping to achieve high resolution at low sample rates. Within the broader hierarchy, this part is a precision sigma-delta ADC, which sits beneath successive-approximation (SAR) and pipeline ADCs in the data-converter taxonomy, and it ultimately belongs to the power-management-adjacent signal-chain IC family. The ADS1100's continuous self-calibration corrects internal drift on every conversion, yielding no missing codes at 16 bits and INL of 0.0125% of FSR maximum.
Key features include single-cycle conversion, an effective 4 uVp-p low-noise floor at the higher PGA gains, on-chip PGA with gain 1/2/4/8, and ratiometric conversion that uses VDD as the reference for absolute measurements when an external reference is not desired. The I2C interface simplifies connection to virtually any microcontroller, and the I2C address is partially set by the A6 / A1 / A4 / A0 suffix scheme to allow multiple devices on one bus.
Architecturally, the part combines a switched-capacitor delta-sigma modulator, a digital sinc³ filter, an offset and gain calibration DAC, and a PGA front end. The single-cycle settling of the digital filter ensures clean step responses for multiplexed inputs and removes the long filter-tail artifacts typical of higher-order sinc filters used at higher data rates.
Typical applications include portable instrumentation, weigh scales, industrial process controls, factory-automation sensor transmitters, consumer battery-powered sensors, and temperature monitoring with thermocouples or RTDs using the PGA for small-signal gain. It is well suited wherever PCB area is constrained but 16-bit resolution is required.
When designing, place 0.1 uF decoupling capacitors close to VDD and keep the analog inputs away from digital return currents; using VDD as the reference simplifies layout but means regulator noise directly couples to the conversion result.
Alternativas directas para ADS1100A6IDBVRG4 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
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ADS1100A0IDBVRG4
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ADS1100A1IDBVRG4
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ADS1100A4IDBVRG4
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ADS1100A6IDBVR
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ADS1100A6IDBVTG4
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ADS1100A6IDBVRG4 Valores máximos y características eléctricas
| Resolución | 16 bits, no missing codes |
| Number of Input Channels | 1 differential |
| Sample Rate (max) | 128 SPS |
| Programmable Data Rates | 8 / 16 / 32 / 128 SPS |
| PGA Gains | 1, 2, 4, 8 |
| Full-Scale Input Range (PGA=1, VDD ref) | ±2.048 V |
| INL (max) | 0.0125 % of FSR |
| Noise | 4 uVp-p (typical, PGA=8) |
| Supply Voltage (VDD) | 2.7 V to 5.5 V |
| Reference | VDD (ratiometric); internal |
| Interfaz | I2C-compatible, 100 kHz / 400 kHz |
| I2C Address (A6 variant) | 0x96 (A0 = 1 logic) |
| Temperatura de funcionamiento | -40 °C to +85 °C |
| Encapsulado | SOT-23-6 (DBV) |
| Calibration | Continuous, self-calibrating |
| Conversion Mode | Single-cycle settling, one-shot on demand |
| Estado RoHS | Compliant (G4 suffix denotes Pb-free, RoHS-compliant tape & reel) |
Configuración de pines de ADS1100A6IDBVRG4
| Pin 1 | GND — Ground reference for both analog and digital sections |
| Pin 2 | AIN0 — Positive differential analog input |
| Pin 3 | AIN1 — Negative differential analog input |
| Pin 4 | VDD — Power supply input (2.7 V to 5.5 V); also used as ratiometric reference |
| Pin 5 | SCL — I2C serial clock input (100 kHz / 400 kHz) |
| Pin 6 | SDA — I2C serial data input/output (open-drain; requires external pull-up) |
Aplicaciones típicas
ADS1100A6IDBVRG4 es adecuado para 6 aplicacións: Weigh Scales & Load Cells, Industrial Process-Control Sensor Transmitters, Portable Consumer & Wearable Health Devices, Temperature Measurement with Thermocouples & RTDs, Battery Monitoring & Cell Balancing, Factory Automation Sensor Modules.
Weigh Scales & Load Cells
The ADS1100A6IDBVRG4's 4 uVp-p input-referred noise at PGA = 8, combined with 16-bit no-missing-codes resolution and continuous self-calibration, makes it well suited for load-cell front ends in weigh scales and force-sensing platforms. The integrated PGA with gains of 1, 2, 4, 8 lets a 1-3 mV/V bridge signal occupy the full ±0.256 V differential range at PGA = 8, maximizing the effective number of bits. Ratiometric conversion against the bridge excitation directly cancels excitation drift and temperature effects, improving long-term scale stability. Using 8 or 16 SPS further suppresses 1/f and mains-related flicker noise on slow weighing cycles. Recommended companion parts: TI INA125 (analog front end, optional external buffer); TI REF3030 (3.0 V precision reference for excitation if absolute accuracy is required).
Industrial Process-Control Sensor Transmitters
Process-control transmitters needing 4-20 mA loop output or digital sensor readout benefit from the ADS1100A6IDBVRG4's small SOT-23-6 footprint (3 mm x 3 mm), low 2.7-5.5 V supply range, and I2C interface that drops cleanly onto any microcontroller. The integrated PGA amplifies small thermocouple and RTD signals directly without a dedicated instrumentation amplifier, reducing BOM area and complexity. Continuous self-calibration corrects offset and gain drift every conversion, giving reliable readings across the -40 °C to +85 °C industrial range. The 128 SPS maximum data rate handles most process-control bandwidth needs, while 8 SPS mode gives very low noise for slow temperature or pressure loops. Recommended companion parts: TI MSP430FR2355 (low-power MCU with I2C); TI TMP117 (I2C temperature sensor for cold-junction compensation).
Portable Consumer & Wearable Health Devices
Battery-powered wearables and consumer health monitors benefit from the ADS1100A6IDBVRG4's compact SOT-23-6 package, 2.7-5.5 V supply that operates directly from a single lithium cell, and I2C bus that conserves GPIO on the host MCU. The 16-bit resolution captures fine-grained signals from biometrics sensors such as skin-conductance, pulse-oximeter photodiode front ends, or strain gauges in fitness wearables. Programmable data rates (8-128 SPS) let designers trade battery life vs. response time: idle polling at 8 SPS draws less current, while measurement bursts at 128 SPS deliver responsive user experience. The ratiometric reference operation works cleanly with regulated Li-ion rails. Recommended companion parts: TI AFE4400 (pulse-oximeter analog front end); TI TPS7A02 (ultra-low-Iq LDO for supply).
Temperature Measurement with Thermocouples & RTDs
Thermocouple and RTD measurement front ends rely on the ADS1100A6IDBVRG4's integrated low-noise PGA to amplify millivolt-level signals up to 16-bit full scale, eliminating the external instrumentation amplifier. At PGA = 8 the input-referred noise floor of 4 uVp-p is low enough to resolve sub-1 °C temperature steps from type-K thermocouples, while the differential inputs reject common-mode noise from industrial grounding. Slower 8 or 16 SPS modes further suppress mains-line interference, delivering clean measurements in factory environments. The I2C interface allows multiple ADS1100s to be addressed on the same bus when monitoring multiple zones. Recommended companion parts: TI ADS1118 (integrated thermocouple conversion reference); TI TMP36 (analog backup sensor).
Battery Monitoring & Cell Balancing
Battery management boards can use the ADS1100A6IDBVRG4 to digitize individual cell voltages in multi-cell lithium packs with 16-bit resolution and integrated PGA, supporting monitoring stacks from 2.7 V to 5.5 V per cell. The differential input naturally rejects ground bounce between cells, critical when measuring stacked battery topologies. Ratiometric conversion against VDD simplifies calibration in production. Continuous self-calibration maintains accuracy over years of operation, important for energy-storage applications where maintenance windows are rare. The SOT-23-6 small footprint allows it to fit adjacent to each cell, supporting distributed monitoring topologies. Recommended companion parts: TI BQ76952 (battery monitor companion IC); TI TPS62840 (high-efficiency buck for supply).
Factory Automation Sensor Modules
Factory-automation sensor modules such as pressure transmitters, flow meters, and gas detectors benefit from the ADS1100A6IDBVRG4's industrial -40 °C to +85 °C temperature range, integrated PGA, and small footprint. Continuous self-calibration corrects long-term drift in field installations, where service access is limited. The four programmable data rates give designers flexibility to optimize noise vs. bandwidth per sensor type: pressure and flow can run at 128 SPS, while gas detectors can settle at 8 SPS for sub-ppm resolution. The I2C interface pairs with virtually any industrial MCU or PLC, simplifying integration into larger automation networks. Recommended companion parts: TI MSP432P401R (industrial-grade MCU); TI ISO1541 (I2C isolator for noisy industrial buses).
Datos de referencia de ingeniería para ADS1100A6IDBVRG4 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADS1100A0IDBVRG4 | ADS1100A1IDBVRG4 | ADS1100A4IDBVRG4 | ADS1100A6IDBVR | ADS1100A6IDBVTG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SOT-23-6 | SOT-23-6 (same) | SOT-23-6 (same) | SOT-23-6 (same) | SOT-23-6 (same) | SOT-23-6 (same) |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits |
| Max Sample Rate | 128 SPS | 128 SPS | 128 SPS | 128 SPS | 128 SPS | 128 SPS |
| PGA Gains | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 |
| I2C Address (8-bit write) | 0x96 (A6 variant) | 0x90 (A0 variant) | 0x92 (A1 variant) | 0x94 (A4 variant) | 0x96 (A6 variant) | 0x96 (A6 variant) |
| 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 |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Reference | VDD (ratiometric) | VDD (ratiometric) | VDD (ratiometric) | VDD (ratiometric) | VDD (ratiometric) | VDD (ratiometric) |
Diferenciadores clave
- Factory-set I2C address variant for multi-drop sensor buses (frente a ADS1100A0IDBVRG4)
- Continuous self-calibration eliminates periodic recalibration overhead (frente a ADS1110A1IDBVR)
- Pb-free G4 packaging code simplifies RoHS-compliant procurement (frente a ADS1100A6IDBVTG4)
Notas de diseño
Recommended supply decoupling: place a 0.1 uF X7R ceramic capacitor as close as possible to the VDD pin (pin 4), with a 1 uF to 10 uF bulk capacitor nearby. Since the ADS1100 uses VDD as the ratiometric reference, regulator noise directly couples into the conversion result. Use a low-noise LDO such as TI TPS7A4701 or TI TPS7A02 upstream; avoid switching regulators on the same rail without LC filtering. Estimated: noise contribution from a 100 uV LDO at 16 SPS adds roughly 1-2 LSBs of input-referred noise at PGA=1.
Avoid leaving I2C pull-ups undersized: with 400 kHz Fast-Mode I2C and a heavily-loaded bus, 1 kohm to 10 kohm pull-ups are typical, but on a long bus or with multiple devices, raise the drive strength. Open-drain SDA (pin 6) requires an external pull-up - if omitted, the device cannot ACK and the host will see a stuck SDA line. Also remember the I2C address variant: the A6 suffix gives write address 0x96; misaddressing as 0x90 (A0 variant) is a common cause of NACK errors during bring-up.
Route the analog input traces (AIN0, AIN1) symmetrically with respect to GND to preserve the differential balance. Keep digital lines (SCL, SDA) physically separated from the analog inputs and use a single, solid ground plane rather than split planes; the device has a single GND pin and assumes a low-impedance return. Place a ferrite bead or series resistor on VDD if additional digital-noise isolation is needed in hostile environments.
For maximum effective resolution at slow data rates (8 or 16 SPS), enable a software averaging window on the MCU side or accumulate multiple conversions and average: at 8 SPS, the ADS1100 sinc³ filter already averages internally, but additional host-side averaging can further reduce quantization noise. At PGA = 8 with a 4 uVp-p input-referred noise floor, the effective number of bits (ENOB) at 8 SPS approaches the full 16 bits when the reference is quiet and inputs are properly filtered.
Información de cumplimiento
RoHS compliance is signaled by the G4 suffix in the part number. AEC-Q100 qualification is not applicable: the ADS1100 industrial-grade part is rated -40 °C to +85 °C; for automotive designs requiring -40 °C to +125 °C, consult TI's automotive-qualified portfolio separately. REACH and conflict-mineral compliance follow TI's standard published statements.