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Texas Instruments ADS1100A4IDBVRG4
- Part No.:
- ADS1100A4IDBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1100A4IDBVRG4.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,010
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Product details
Overview
ADS1100A4IDBVRG4 from Texas Instruments is a self-calibrating, 16-bit delta-sigma analog-to-digital converter with differential inputs, I²C interface, programmable gain amplifier (PGA = 1/2/4/8), and 8–128 SPS data rate in SOT23-6 package. It operates ratiometrically using the supply voltage as reference and achieves ±0.0125% FSR INL and 4 µVP-P noise for high-accuracy sensor measurements in space-constrained systems.
For engineers reviewing the ADS1100A4IDBVRG4 datasheet, ADS1100A4IDBVRG4 pinout, ADS1100A4IDBVRG4 application, or ADS1100A4IDBVRG4 equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in portable instrumentation and smart transmitters, and validated alternative options - all grounded in TI's SBAS239B specification.
Technical Context
The ADS1100A4IDBVRG4 implements a fully differential delta-sigma modulator with integrated digital filter and internal system clock (nominal 275 kHz), eliminating external timing components. Its ratiometric architecture ties full-scale range directly to VDD/PGA, enabling stable measurement against supply variation.
It features continuous self-calibration of offset and gain errors, no user intervention required, with calibration effects included in published INL (±0.0125% FSR) and offset drift (0.6–1.5 µV/°C) specs. Input impedance varies with PGA setting: differential = 2.4 MΩ/PGA, common-mode = 8 MΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | Up to 16 bits with no missing codes - guarantees monotonicity and full dynamic range utilization at 8 SPS. |
| Data Rate | Programmable 8/16/32/128 SPS - selects trade-off between noise (4 µVP-P at 8 SPS) and update speed. |
| PGA Gain | Selectable 1, 2, 4, or 8 - scales small differential signals (e.g., bridge outputs) to maximize ADC utilization without external amplification. |
| INL | ±0.0125% of FSR max - ensures <±2 LSB error across full scale at 16-bit mode, critical for precision metrology. |
| Supply Range | 2.7 V to 5.5 V - supports direct connection to Li-ion, 3.3 V, and 5 V rails without LDO overhead. |
| Quiescent Current | 90 µA active, 0.05 µA power-down - enables battery operation >1 year in low-duty-cycle sensor nodes. |
| I²C Address | Fixed 7-bit address 1001100 (0x4C) - allows coexistence with up to 7 other ADS1100 variants on same bus. |
Pinout & Package
SOT23-6 package (DBV), 1.6 mm × 2.9 mm × 1.15 mm body, gull-wing leads, moisture sensitivity level 1. Pin 1 marked by dot or beveled edge; marking "AD4" indicates I²C address 1001100.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AD0) | I²C address input | Factory-set to logic HIGH (1001100); not user-configurable - determines unique slave address on I²C bus. |
| 2 (VIN+) | Differential analog input (+) | Non-inverting input; accepts voltage from GND – 0.2 V to VDD + 0.2 V - requires low-impedance source or buffer for >10 kΩ sources. |
| 3 (GND) | Analog/digital ground reference | Single ground pin shared for analog and digital sections - must connect to clean system ground plane with short trace. |
| 4 (VIN–) | Differential analog input (–) | Inverting input; same voltage range as VIN+ - enables true differential measurement rejecting common-mode noise. |
| 5 (VDD) | Power supply | 2.7–5.5 V supply; also serves as ratiometric reference - bypass with 0.1 µF ceramic capacitor placed ≤2 mm from pin. |
| 6 (SCL) | I²C clock input | Input-only (slave mode); supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes - requires external pull-up resistor. |
| 7 (SDA) | I²C data bidirectional | Open-drain I/O; shares bus with other slaves - requires external pull-up; ACK/NACK handled automatically during read/write. |
Key Features
| Feature | Design Value |
|---|---|
| Continuous self-calibration | Eliminates manual offset/gain trim and long-term drift compensation - maintains ±0.0125% FSR INL over –40°C to +85°C without firmware intervention. |
| Differential input architecture | Rejects common-mode noise up to 100 dB (PGA = 8) - enables accurate readings from noisy industrial environments or unshielded sensor cables. |
| Ratiometric operation | Full-scale range = 2 × VDD/PGA - removes need for precision voltage reference and makes measurement immune to VDD ripple or tolerance. |
| Low-noise PGA | 4 µVP-P input-referred noise at 8 SPS - resolves sub-µV signal changes when paired with high-resolution sensors like strain gauges. |
| Single-conversion auto-power-down | Reduces current to 0.05 µA between reads - extends battery life in wake-on-event sensor nodes without external enable control. |
Applications
| Portable Instrumentation | Industrial Process Control |
|---|---|
|
Use Scenario: Handheld multimeter measuring thermocouple or RTD output with 16-bit resolution and battery life >500 hours. IC Role / Device Role / Timing Role: Primary A/D converter acquiring differential sensor voltage; performs single-shot conversion triggered by button press. Use Value: Self-calibration ensures factory accuracy holds over temperature and time; 90 µA active current enables multi-year operation on two AAA cells. |
Use Scenario: 4–20 mA loop-powered transmitter digitizing pressure sensor bridge output in hazardous area enclosures. IC Role / Device Role / Timing Role: Signal conditioner and ADC front-end; continuously converts bridge differential voltage with PGA = 4 to match sensor mV/V range. Use Value: Ratiometric operation eliminates need for isolated reference; 8 MΩ common-mode input impedance minimizes loading on high-Z sensor bridges. |
| Smart Transmitters | Temperature Measurement Systems |
|
Use Scenario: Wireless HART-enabled transmitter converting strain gauge output to digital for cloud telemetry. IC Role / Device Role / Timing Role: Precision ADC interfacing to microcontroller via I²C; uses address 0x4C to avoid conflict with other on-board sensors. Use Value: Fixed I²C address (1001100) simplifies firmware configuration; SOT23-6 footprint saves PCB area in compact transmitter modules. |
Use Scenario: Digital thermostat reading NTC thermistor voltage with ±0.1°C accuracy over –20°C to +70°C ambient. IC Role / Device Role / Timing Role: High-resolution ADC sampling thermistor divider; uses PGA = 2 to maximize LSB size for narrow temperature span. Use Value: Low 4 µVP-P noise and ±0.0125% INL ensure sub-degree repeatability; self-calibration removes annual recalibration requirement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IRUGR | 4-channel, 16-bit, programmable comparator, 860 SPS max, QFN-10 package | Supports multiplexed 4-input sensing; higher speed but larger footprint and no ratiometric reference | Choose ADS1115IRUGR when measuring multiple sensors on one bus or requiring alert output; ADS1100A4IDBVRG4 preferred for ultra-low-power single-channel or space-constrained designs. |
| MCP3421A0T-E/CH | 18-bit, 15 SPS max, PGA = 1/2/4/8, SOT23-6, I²C address 0x68 | Higher resolution but slower (15 SPS vs 128 SPS), higher typical current (145 µA), no self-calibration | Choose MCP3421A0T-E/CH only if 18-bit resolution is mandatory and 15 SPS suffices; ADS1100A4IDBVRG4 offers better speed/power/accuracy balance for most 16-bit applications. |
Compared with ADS1115IRUGR and MCP3421A0T-E/CH, the ADS1100A4IDBVRG4 uniquely combines 16-bit no-missing-codes performance, continuous self-calibration, 128 SPS maximum rate, and 90 µA active current in SOT23-6 - making it optimal for battery-powered, space-limited, single-sensor precision measurement where long-term stability is critical.
Availability
ADS1100A4IDBVRG4 is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitters requiring stable component supply, guaranteed long-term sourcing, and TI-authorized traceability.
Supply support for ADS1100A4IDBVRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data acquisition and industrial-grade IC design.
The ADS1100 product line was engineered for ultra-compact, low-power, high-accuracy sensor interfacing in portable and loop-powered systems - delivering complete signal chain functionality (PGA + ADC + I²C) in a single SOT23-6 IC.
FAQ
What is the I²C address of the ADS1100A4IDBVRG4?
The ADS1100A4IDBVRG4 has a fixed 7-bit I²C slave address of 1001100 (0x4C), determined by its AD4 factory setting. This address is hardwired and cannot be changed via pins or registers. The device responds only to this address on the I²C bus, enabling reliable multi-device configurations when combined with other ADS1100 variants (e.g., ADS1100A0 at 0x48).
Does the ADS1100A4IDBVRG4 require an external voltage reference?
No, the ADS1100A4IDBVRG4 does not require an external voltage reference. It operates ratiometrically using VDD as its reference voltage, so full-scale range equals 2 × VDD/PGA. This eliminates component count and cost while ensuring measurement stability against VDD variation - a key advantage confirmed in TI's SBAS239B datasheet Section "Theory of Operation".
How does the self-calibration function in the ADS1100A4IDBVRG4 work?
The ADS1100A4IDBVRG4 performs continuous, automatic self-calibration of offset and gain errors without user intervention or external commands. The calibration circuitry runs in the background during normal operation and cannot be disabled. All published specifications - including ±0.0125% FSR INL and offset drift (0.6–1.5 µV/°C) - reflect calibrated performance, as stated in the Electrical Characteristics table of the SBAS239B datasheet.
What is the maximum sample rate supported by the ADS1100A4IDBVRG4?
The ADS1100A4IDBVRG4 supports four programmable data rates: 8, 16, 32, and 128 samples per second (SPS). At 128 SPS, resolution is 12 bits (no missing codes); at 8 SPS, it achieves full 16-bit resolution with 4 µVP-P noise. These rates are selected via DR[1:0] bits in the configuration register, with 8 SPS as the default setting per Table VI in SBAS239B.
Can the ADS1100A4IDBVRG4 measure negative differential input voltages?
Yes, the ADS1100A4IDBVRG4 accepts bipolar differential input voltages (VIN+ – VIN–) ranging from –VDD/PGA to +VDD/PGA, enabling measurement of both positive and negative signal swings. However, neither VIN+ nor VIN– may go below GND – 0.2 V or above VDD + 0.2 V - absolute limits specified in the Absolute Maximum Ratings table of SBAS239B.
ADS1100A4IDBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 128
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- PGA-ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- PGA, Selectable Address
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1100A4IDBVRG4 FAQ
1.How can I place an order for ADS1100A4IDBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1100A4IDBVRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS1100A4IDBVRG4 reliable?
The price and inventory of ADS1100A4IDBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1100A4IDBVRG4 is usually 5 days.
3.What payment methods are accepted for ADS1100A4IDBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1100A4IDBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1100A4IDBVRG4?
ADS1100A4IDBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1100A4IDBVRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS1100A4IDBVRG4?
For technical support, including ADS1100A4IDBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1100A4IDBVRG4 requirements.
6.How does Aetrix verify that ADS1100A4IDBVRG4 is sourced from the original manufacturer or authorized distributors?
All ADS1100A4IDBVRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS1100A4IDBVRG4 meets industry standards.
7.What is the process for return or replacement of ADS1100A4IDBVRG4?
All ADS1100A4IDBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1100A4IDBVRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS1100A4IDBVRG4 part is unused and in its original packaging.
Return procedure for ADS1100A4IDBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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