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Texas Instruments ADS1000A1IDBVTG4
- Part No.:
- ADS1000A1IDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1000A1IDBVTG4.pdf
- Description:
- IC ADC 12BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,382
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Product details
Overview
ADS1000A1IDBVTG4 from Texas Instruments is a 12-bit, I²C-compatible analog-to-digital converter with differential inputs, programmable gain amplifier (PGA = 1/2/4/8), 128 SPS data rate, and ratiometric operation using VDD as reference. It operates from 2.7V to 5.5V and draws only 90 µA active current, targeting space- and power-constrained voltage monitoring and battery management systems.
For engineers reviewing the ADS1000A1IDBVTG4 datasheet, ADS1000A1IDBVTG4 pinout, ADS1000A1IDBVTG4 application, or ADS1000A1IDBVTG4 equivalent, this page delivers verified technical context, exact SOT-23-6 pin mapping, real-world use scenarios for portable instrumentation and industrial sensing, and two validated alternative parts with documented functional trade-offs.
Technical Context
The ADS1000A1IDBVTG4 integrates a switched-capacitor ADC core, on-chip clock generator (275 kHz nominal), and I²C slave interface supporting Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes. Its PGA enables full-scale input ranges of ±VDD/PGA - e.g., ±0.625 V at PGA=8 with 5 V supply - while maintaining 1 LSB max INL and single-cycle conversion timing.
It operates in two modes: continuous conversion (ST/BSY always reads '1') or single conversion (ST/BSY toggles to initiate and signal completion). The device uses binary two's complement output coding (–2048 to +2047), right-justified and sign-extended in a 16-bit register, enabling direct 16-bit accumulation without software bit-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonicity and full code coverage across full input range. |
| Data Rate | 128 SPS - fixed sampling rate enabling deterministic timing for low-frequency sensor acquisition. |
| PGA Gain Options | 1, 2, 4, or 8 - selectable via Configuration Register bits PGA1/PGA0 to scale small differential signals into full ADC range. |
| Supply Current | 90 µA active / 0.05 µA power-down - supports ultra-low-power battery operation with automatic sleep after single conversion. |
| I²C Address | 1001001 (7-bit) - factory-set for ADS1000A1 variant; enables coexistence with ADS1000A0 (1001000) on same bus. |
| Input Range | ±VDD/PGA - ratiometric operation eliminates need for external reference; full-scale depends on VDD and PGA setting. |
| Operating Temp | –40°C to +125°C - qualified for industrial and automotive-adjacent environments with tested offset/gain drift. |
Pinout & Package
SOT-23-6 package with exposed pad (DBV suffix); marking "BD1" indicates I²C address 1001001. Pin 1 identified by dot or beveled edge; pin numbering follows standard counterclockwise orientation from top-left when marking is upright.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Differential analog input positive | Accepts voltage up to VDD + 0.2 V; paired with VIN– for true differential measurement or grounded for single-ended mode. |
| VIN– | Differential analog input negative | Accepts voltage down to GND – 0.2 V; common-mode range extends to 8 MΩ impedance at all PGA settings. |
| GND | Analog and digital ground reference | Single ground connection required; decoupling capacitor (0.1 µF) must be placed adjacent to VDD pin. |
| VDD | Power supply input | 2.7 V to 5.5 V supply; serves as ADC reference - output codes scale directly with VDD variation. |
| SDA | I²C bidirectional data line | Open-drain output/input; requires external pull-up (1 kΩ–10 kΩ); acknowledges bytes with low pulse during ACK cycle. |
| SCL | I²C clock input | Input-only; no clock stretching - simplifies timing analysis and avoids master timeout issues in multi-device buses. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle conversion | Completes each 12-bit sample in one internal clock period (~7.8 ms at 128 SPS), eliminating software polling delays. |
| Pin- and software-compatible with ADS1100 | Shares identical SOT-23-6 footprint and I²C register map - allows drop-in upgrade path to 16-bit resolution without PCB change. |
| Two factory-set I²C addresses | BD0 (1001000) and BD1 (1001001) variants enable dual ADS1000 deployment on one bus without address conflict or external logic. |
| Ratiometric reference architecture | Uses VDD as reference - removes need for precision external reference IC and associated BOM cost and layout area. |
| Low-impedance differential input stage | Differential input impedance = 2.4 MΩ / PGA - minimizes loading error on high-Z sources like thermistors and bridge sensors. |
Applications
| Battery Voltage Monitoring | Portable Instrumentation |
|---|---|
|
Use Scenario: Real-time tracking of Li-ion cell voltage during charge/discharge cycles in handheld medical devices. IC Role / Device Role / Timing Role: ADC front-end converting differential sense voltage across shunt resistor; synchronized to microcontroller's I²C polling interval. Use Value: 12-bit resolution at 128 SPS captures 7.8 mV steps at 5 V supply with PGA=8, enabling <1% SOC estimation error. |
Use Scenario: Signal digitization in handheld multimeters measuring DC voltage, temperature (via thermistor), and current. IC Role / Device Role / Timing Role: Primary A/D converter interfacing directly to MCU I²C port; configured for single-shot mode to minimize average current draw. Use Value: 90 µA active current and automatic power-down extend battery life beyond 100 hours per CR2032 cell. |
| Industrial Process Control | Consumer Goods Sensing |
|
Use Scenario: Monitoring 4–20 mA loop outputs from pressure transmitters in HVAC control panels. IC Role / Device Role / Timing Role: Isolated analog input conditioner feeding differential voltage to ADS1000A1IDBVTG4; I²C output read by local controller every 100 ms. Use Value: 1 LSB INL and –40°C to +125°C operation ensure stable 0.05% FS accuracy across ambient temperature swings. |
Use Scenario: Measuring battery pack voltage and temperature in wireless earbuds charging case. IC Role / Device Role / Timing Role: Low-power ADC integrated into compact PCB; powered from same LDO supplying Bluetooth SoC. Use Value: SOT-23-6 footprint (2.9 mm × 1.6 mm) and 0.1 µF bypass requirement enable placement within 3 mm of power rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1000A0IDBVT | I²C address = 1001000 (vs. 1001001); identical electrical specs, pinout, and firmware interface. | No functional difference - used only to add second ADS1000 on same I²C bus without address collision. | Select ADS1000A0IDBVT when deploying multiple units on one bus and ADS1000A1IDBVTG4 is already assigned address 1001001. |
| ADS1115IRUGT | 16-bit resolution, 860 SPS max, programmable comparator, 4-channel MUX; larger X2QFN-10 package. | Supports multi-channel scanning and alert-driven wake-up - suited for systems requiring higher resolution or channel density. | Choose ADS1115IRUGT when 16-bit precision or 4-input multiplexing is required; accept larger footprint and higher 150 µA active current. |
Compared with ADS1000A0IDBVT, the ADS1000A1IDBVTG4 provides identical performance but enables guaranteed I²C address separation in multi-sensor designs; versus ADS1115IRUGT, it trades resolution and channel count for minimal size, lower power, and simpler firmware integration.
Availability
ADS1000A1IDBVTG4 is available at Aetrix Electronics and suitable for battery management, portable instrumentation, and industrial process control requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ADS1000A1IDBVTG4 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 converters and low-power design.
The ADS1000 product line was engineered for ultra-compact, low-power sensor interfaces in space-constrained portable and industrial systems - prioritizing minimal external components, I²C simplicity, and robust operation across extended temperature ranges.
FAQ
What is the I²C address of the ADS1000A1IDBVTG4?
The ADS1000A1IDBVTG4 has a fixed 7-bit I²C slave address of 1001001 (0x49 in hexadecimal), factory-programmed and marked as "BD1" on the package. This distinguishes it from the ADS1000A0 variant (1001000 / 0x48), allowing both to coexist on the same I²C bus without address conflict.
Does the ADS1000A1IDBVTG4 require an external voltage reference?
No, the ADS1000A1IDBVTG4 uses its VDD supply as the reference voltage - it is ratiometric. Full-scale input equals ±VDD/PGA, so output codes scale linearly with VDD. This eliminates the need for an external precision reference IC, reducing BOM count and board area.
How does the programmable gain amplifier (PGA) affect input range in the ADS1000A1IDBVTG4?
The PGA gain (1, 2, 4, or 8) sets the full-scale differential input range to ±VDD/PGA. For example, with VDD = 5 V and PGA = 8, the usable input span is ±0.625 V. This allows small signals - such as millivolt-level thermistor or bridge outputs - to fully utilize the 12-bit dynamic range without external amplification.
Can the ADS1000A1IDBVTG4 measure single-ended signals?
Yes - by grounding VIN– and applying the signal to VIN+, the ADS1000A1IDBVTG4 operates in pseudo-single-ended mode. Input range becomes 0 V to VDD + 0.2 V, though effective resolution drops by ~1 bit due to loss of full differential swing. Level-shifting circuitry (e.g., op-amp bias) is required for true bipolar single-ended inputs.
What is the power consumption behavior of the ADS1000A1IDBVTG4 in single-conversion mode?
In single-conversion mode, the ADS1000A1IDBVTG4 draws 90 µA only during active conversion (~7.8 ms), then automatically enters power-down state drawing just 0.05 µA. This duty-cycled operation reduces average current significantly - e.g., one conversion per second yields ~0.7 µA average - ideal for battery-powered wake-on-event systems.
ADS1000A1IDBVTG4 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:
- 12
- 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 ~ 125°C
- Supplier Device Package:
- SOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS1000A1IDBVTG4 FAQ
1.How can I place an order for ADS1000A1IDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1000A1IDBVTG4 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 ADS1000A1IDBVTG4 reliable?
The price and inventory of ADS1000A1IDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1000A1IDBVTG4 is usually 5 days.
3.What payment methods are accepted for ADS1000A1IDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1000A1IDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1000A1IDBVTG4?
ADS1000A1IDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1000A1IDBVTG4 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 ADS1000A1IDBVTG4?
For technical support, including ADS1000A1IDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1000A1IDBVTG4 requirements.
6.How does Aetrix verify that ADS1000A1IDBVTG4 is sourced from the original manufacturer or authorized distributors?
All ADS1000A1IDBVTG4 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 ADS1000A1IDBVTG4 meets industry standards.
7.What is the process for return or replacement of ADS1000A1IDBVTG4?
All ADS1000A1IDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1000A1IDBVTG4, 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 ADS1000A1IDBVTG4 part is unused and in its original packaging.
Return procedure for ADS1000A1IDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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