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Texas Instruments ADS1100A5IDBVTG4
- Part No.:
- ADS1100A5IDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1100A5IDBVTG4.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,132
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Product details
Overview
ADS1100A5IDBVTG4 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 as reference, draws only 90 µA active current, and targets precision sensor measurement in space-constrained systems.
For engineers reviewing the ADS1100A5IDBVTG4 datasheet, ADS1100A5IDBVTG4 pinout, ADS1100A5IDBVTG4 application, or ADS1100A5IDBVTG4 equivalent, key selection criteria include its guaranteed 16-bit no-missing-codes performance at 8 SPS, ±0.0125% FSR INL, 4 µVP-P noise, continuous self-calibration, and factory-programmed I²C address 1001101 (0x4D) - critical for multi-device bus design and low-power portable instrumentation.
Technical Context
The ADS1100A5IDBVTG4 implements a fully differential delta-sigma modulator with integrated digital filter and internal system clock (nominal 275 kHz), eliminating external timing components. Its ratiometric operation ties full-scale range directly to VDD and PGA setting: FSR = ±VDD/PGA.
Input impedance is gain-dependent: differential impedance = 2.4 MΩ/PGA, common-mode = 8 MΩ. The device supports only slave-mode I²C communication (no master capability), with full compatibility across Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes - requiring explicit Hs master code activation for the latter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes at 8 SPS; reduces to 12-bit at 128 SPS - defines usable dynamic range per data rate selection |
| INL | ±0.0125% of FSR max at PGA=1, 16-bit mode - ensures linearity within ±2 LSB over full scale |
| Output Noise | 4 µVP-P (typical) - enables sub-100 µV signal resolution in low-noise sensor interfaces |
| Data Rate | Programmable: 8 / 16 / 32 / 128 SPS - trade-off between noise floor, settling time, and throughput |
| PGA Gain | Selectable 1, 2, 4, or 8 - scales input range to maximize ADC utilization for mV-level transducer outputs |
| Supply Current | 90 µA active, 0.05–2 µA power-down - supports battery operation >1 year in duty-cycled sensing |
| I²C Address | Fixed 7-bit address 1001101 (0x4D) - enables 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, thermal pad not present. Pin 1 marked by dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Differential analog input (+) | Non-inverting input; accepts voltage from GND – 0.2 V to VDD + 0.2 V |
| VIN– | Differential analog input (–) | Inverting input; same voltage range as VIN+; forms differential pair with VIN+ |
| GND | Analog/digital ground reference | Single ground connection; must be low-impedance return path for analog and digital currents |
| SCL | I²C clock input | Asynchronous input only; ADS1100 never drives SCL - master-controlled timing |
| VDD | Power supply | 2.7 V to 5.5 V; supplies internal regulator, modulator, and I²C interface; also serves as reference |
| SDA | I²C bidirectional data line | Open-drain; requires external pull-up; carries output register (2 bytes) and config register (1 byte) |
Key Features
| Feature | Design Value |
|---|---|
| Continuous self-calibration | Automatically corrects offset/gain drift in real time - eliminates need for external calibration routines or temperature compensation firmware |
| Ratiometric reference | Uses VDD as reference - removes sensitivity to supply variation and simplifies power rail design for single-supply systems |
| Single-cycle conversion | Completes conversion in one data-rate period - guarantees deterministic latency (e.g., 125 ms at 8 SPS) for time-critical sampling |
| Low-noise PGA | 4 µVP-P noise at PGA=1, 8 SPS - preserves SNR when amplifying microvolt-level bridge or thermistor signals |
| Power-down mode | 0.05 µA typical quiescent current - enables ultra-low average current in wake-on-event architectures |
Applications
| Temperature Monitoring Systems | Industrial Pressure Transmitters |
|---|---|
Use Scenario: Measuring RTD or thermistor voltage in HVAC controllers or environmental sensors with <1°C accuracy requirement. IC Role / Device Role / Timing Role: Precision front-end ADC converting differential sensor output; provides 16-bit resolution at 8 SPS with built-in PGA to match thermistor span. Use Value: Eliminates external op-amp and reference IC - reduces BOM count by 3 components while maintaining ±0.0125% INL over –40°C to +85°C. | Use Scenario: Digitizing millivolt-level output from Wheatstone bridge pressure sensors in process control loop transmitters. IC Role / Device Role / Timing Role: Ratiometric A/D converter interfacing directly to bridge; PGA=8 scales ±15 mV output to full-scale range without gain error drift. Use Value: 90 µA active current and automatic self-calibration enable loop-powered 4–20 mA transmitter designs compliant with IEC 61000-4-5 surge immunity. |
| Portable Digital Multimeters | Smart Factory Sensor Nodes |
Use Scenario: Battery-operated handheld DMM requiring 16-bit DC voltage measurement with auto-ranging and low power consumption. IC Role / Device Role / Timing Role: Primary measurement ADC with programmable data rate and gain; operates from single 3.3 V Li-ion cell with internal 2.7–5.5 V tolerance. Use Value: Single-conversion mode + 0.05 µA power-down current extends battery life to >500 hours between charges at 1 sample/sec duty cycle. | Use Scenario: Wireless node monitoring vibration or strain in predictive maintenance systems with edge processing and BLE transmission. IC Role / Device Role / Timing Role: Low-power, high-resolution ADC feeding MCU ADC input or direct SPI/I²C interface; factory-set I²C address avoids bus conflicts in dense sensor networks. Use Value: Fixed 0x4D I²C address allows plug-and-play integration into standardized sensor fusion firmware without address configuration overhead. |
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 |
|---|---|---|---|
| ADS1115IRUGT | 4-channel, 16-bit, programmable comparator, 860 SPS max, same SOT23-6 but different pinout and I²C address map | Supports multiplexed 4-input measurement; lacks ratiometric reference - requires external VREF for absolute accuracy | Choose ADS1115IRUGT only if multi-channel scanning or window-comparator functionality is required; not drop-in compatible due to pinout and register structure differences |
| MCP3421A0T-E/CH | 18-bit, 15 SPS max, PGA=1/2/4/8, same I²C interface but different address bits (1001000 default), higher INL (±0.02% FSR) | Higher resolution at lower speed; optimized for ultra-low-noise DC measurements rather than moderate-speed industrial sensing | Prefer MCP3421A0T-E/CH when 18-bit resolution at ≤15 SPS suffices and tighter long-term drift specs are needed; verify I²C address conflict in multi-device systems |
Compared with ADS1100A5IDBVTG4, ADS1115IRUGT offers channel multiplexing but sacrifices ratiometric simplicity and pin compatibility, while MCP3421A0T-E/CH delivers higher resolution at lower speed and relaxed noise specs - making ADS1100A5IDBVTG4 optimal for cost-sensitive, single-channel, supply-referenced 16-bit measurement where board space and firmware overhead are constrained.
Availability
ADS1100A5IDBVTG4 is available at Aetrix Electronics and suitable for portable instrumentation, industrial process control, and smart transmitters requiring stable component supply with guaranteed long-term sourcing.
Supply support for ADS1100A5IDBVTG4 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 company specializing in analog and embedded processing solutions, with leadership in precision data converters and low-power signal chain products.
The ADS1100 product line was designed for compact, self-contained precision measurement in battery-powered and space-constrained industrial and portable systems - emphasizing integrated calibration, minimal external components, and robust I²C interoperability.
FAQ
What is the factory-programmed I²C address of the ADS1100A5IDBVTG4?
The ADS1100A5IDBVTG4 has a fixed 7-bit I²C slave address of 1001101 (0x4D), corresponding to the "AD5" variant in TI's ordering table. This address is laser-trimmed during manufacturing and cannot be modified. It enables direct connection to an I²C bus alongside up to seven other ADS1100 variants (A0–A7) without address collision.
Does the ADS1100A5IDBVTG4 require an external reference voltage?
No, the ADS1100A5IDBVTG4 uses a ratiometric architecture with VDD as its reference voltage - no external reference is needed. Full-scale range equals ±VDD/PGA, making measurement accuracy inherently tied to supply stability. This simplifies design in single-rail systems but requires attention to VDD noise and regulation when high absolute accuracy is required.
How does the programmable gain amplifier (PGA) affect the input voltage range of the ADS1100A5IDBVTG4?
The PGA scales the differential input range inversely with gain: at PGA=1, full-scale is ±VDD; at PGA=8, it is ±VDD/8. For example, with VDD=3.3 V, the input range is ±3.3 V at PGA=1 or ±412.5 mV at PGA=8. This allows small-signal sensors (e.g., load cells) to use the full 16-bit code range without external amplification, preserving SNR and reducing component count.
Can the ADS1100A5IDBVTG4 operate from a 2.5 V supply?
No - the ADS1100A5IDBVTG4 specifies a minimum supply voltage of 2.7 V. Operation below 2.7 V violates Absolute Maximum Ratings and may result in undefined behavior, increased INL, or failure to self-calibrate. For 2.5 V systems, consider the ADS1000 (12-bit) or ADS111x family with wider supply ranges.
What is the purpose of the ST/BSY bit in the ADS1100A5IDBVTG4 configuration register?
The ST/BSY bit (bit 7) serves dual roles: when written in single-conversion mode, setting it to 1 triggers one ADC conversion; when read, it indicates conversion status (1 = busy, 0 = result ready). In continuous mode, ST/BSY is always read as 1 and writing to it has no effect. This bit enables precise software synchronization without polling delay or interrupt dependency.
ADS1100A5IDBVTG4 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:
- -
ADS1100A5IDBVTG4 FAQ
1.How can I place an order for ADS1100A5IDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1100A5IDBVTG4 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 ADS1100A5IDBVTG4 reliable?
The price and inventory of ADS1100A5IDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1100A5IDBVTG4 is usually 5 days.
3.What payment methods are accepted for ADS1100A5IDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1100A5IDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1100A5IDBVTG4?
ADS1100A5IDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1100A5IDBVTG4 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 ADS1100A5IDBVTG4?
For technical support, including ADS1100A5IDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1100A5IDBVTG4 requirements.
6.How does Aetrix verify that ADS1100A5IDBVTG4 is sourced from the original manufacturer or authorized distributors?
All ADS1100A5IDBVTG4 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 ADS1100A5IDBVTG4 meets industry standards.
7.What is the process for return or replacement of ADS1100A5IDBVTG4?
All ADS1100A5IDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1100A5IDBVTG4, 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 ADS1100A5IDBVTG4 part is unused and in its original packaging.
Return procedure for ADS1100A5IDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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