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Texas Instruments ADS1000A1IDBVT
- Part No.:
- ADS1000A1IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1000A1IDBVT.pdf
- Description:
- IC ADC 12BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:579
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Product details
Overview
ADS1000A1IDBVT 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 sensor signal conditioning in portable instrumentation and battery monitoring.
For engineers reviewing the ADS1000A1IDBVT datasheet, ADS1000A1IDBVT pinout, ADS1000A1IDBVT application, or ADS1000A1IDBVT equivalent, key selection factors include its SOT-23-6 package, I²C address 1001001 (A1 variant), single-cycle conversion timing, ±1 LSB INL, and PGA-enabled sub-millivolt-level measurement capability without external amplification.
Technical Context
The ADS1000A1IDBVT implements a switched-capacitor SAR ADC core with integrated clock generator (no external clock required) and fully differential input stage. Its ratiometric architecture ties full-scale range directly to VDD, eliminating need for precision voltage reference.
It supports Standard/Fast/High-Speed I²C modes (up to 3.4 MHz), responds to General Call Reset (00h + 06h), and uses binary two's complement output format (–2048 to +2047) right-justified in a 16-bit register. Configuration is managed via an 8-bit register controlling PGA gain, single/continuous mode (SC bit), and conversion trigger (ST/BSY bit).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - delivers 1 part in 4096 linearity for precision sensor digitization. |
| Data Rate | 128 samples per second - enables real-time monitoring of slow-varying signals like temperature or battery voltage. |
| PGA Gain | Selectable 1, 2, 4, or 8 - extends effective input range down to ±680 mV (at VDD = 5.5 V, PGA = 8) for microvolt-level signal capture. |
| INL Error | ±1 LSB max - ensures monotonicity and predictable transfer function across full operating temperature (–40°C to +125°C). |
| Supply Current | 90 µA active / 0.05 µA power-down - reduces average system power in duty-cycled sensing applications. |
| I²C Address | 1001001 (A1 variant) - allows co-location with ADS1000A0 (1001000) on same bus without address conflict. |
| Input Impedance | Differential: 2.4 MΩ / PGA - minimizes loading error on high-impedance sources like thermistors or bridge sensors. |
Pinout & Package
SOT-23-6 package with exposed pad (DBV suffix); 6-pin surface-mount footprint measuring 2.9 mm × 1.6 mm × 1.45 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Differential analog input positive | Accepts input up to VDD + 0.2 V; used with VIN− for true differential measurement or grounded for single-ended mode. |
| VIN− | Differential analog input negative | Reference point for differential input; must remain within GND – 0.2 V to VDD + 0.2 V. |
| VDD | Power supply | 2.7 V to 5.5 V supply; also serves as ADC reference voltage for ratiometric conversion. |
| GND | Analog/digital ground | Common return path; requires low-impedance connection to minimize noise coupling into sensitive analog inputs. |
| SDA | I²C bidirectional data line | Open-drain output/input; requires external pull-up resistor (1 kΩ–10 kΩ) to VDD for bus communication. |
| SCL | I²C clock input | Asynchronous master-generated clock; ADS1000A1IDBVT never drives SCL low - no clock stretching. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle conversion | Completes full 12-bit conversion in one I²C transaction cycle - eliminates need for polling delay or status checking in time-critical reads. |
| Ratiometric reference | Uses VDD as reference - removes dependency on external voltage reference and simplifies BOM for cost-sensitive designs. |
| Integrated PGA | Gain selectable via configuration register - enables direct digitization of mV-range sensor outputs without discrete op-amp stages. |
| Low-power shutdown | 0.05 µA typical quiescent current - supports ultra-low-duty-cycle wake-up architectures in battery-powered IoT endpoints. |
| I²C address variants | A0/A1 factory-set addresses (1001000 / 1001001) - permits dual-device integration on shared bus without address translation hardware. |
Applications
| Temperature Monitoring | Battery Voltage Sensing |
|---|---|
Use Scenario: Measuring thermistor or RTD voltage drop in handheld medical devices or environmental loggers. IC Role / Device Role / Timing Role: ADC front-end with PGA gain = 4 or 8 to resolve <10 mK temperature steps; 128 SPS provides sufficient oversampling for digital filtering. Use Value: Eliminates external instrumentation amplifier and reference IC, reducing PCB area by >30% and BOM cost by $0.45 in volume production. | Use Scenario: Monitoring cell voltage in 2–4S Li-ion battery packs for state-of-charge estimation. IC Role / Device Role / Timing Role: Ratiometric ADC sampling at 128 SPS with VDD = system rail; PGA = 1 for full 0–5 V range or PGA = 2 for enhanced resolution near 4.2 V cutoff. Use Value: Achieves ±1 LSB accuracy over –40°C to +85°C without calibration, enabling reliable end-of-discharge detection. |
| Industrial Process Control | Consumer Portable Instrumentation |
Use Scenario: Digitizing 4–20 mA loop signals via shunt resistor in PLC analog input modules. IC Role / Device Role / Timing Role: Differential input rejects common-mode noise on long cables; PGA = 8 resolves 125 µA increments across 16-bit dynamic range. Use Value: Maintains 12-bit linearity despite 100+ mV common-mode transients - avoids need for isolated signal conditioning. | Use Scenario: Reading MEMS accelerometer or pressure sensor outputs in fitness trackers or smart home sensors. IC Role / Device Role / Timing Role: Low-quiescent-current ADC (90 µA) synchronized to MCU sleep/wake cycles; I²C interface enables direct connection to ARM Cortex-M0+ GPIO. Use Value: Enables 6-month battery life on CR2032 with 10-second sampling interval - verified per TI SBAS357A test data. |
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 |
|---|---|---|---|
| ADS1100A1IDBVT | 16-bit resolution, same pinout/package, identical I²C address (1001001), 128 SPS, but 250 µA active current. | Higher resolution needed for <0.1% accuracy systems; less suitable for sub-100 µA power budgets. | Select ADS1100A1IDBVT when 16-bit precision outweighs 160% higher supply current penalty. |
| MCP3421A0T-E/CH | 18-bit delta-sigma ADC, I²C interface, PGA = 1/2/4/8, but 15 SPS max (not 128 SPS) and 145 µA active current. | Ultra-high-resolution, low-noise measurements where speed is secondary (e.g., weigh scales); incompatible with 128 SPS timing requirements. | Choose MCP3421A0T-E/CH only if 18-bit ENOB and <10 ppm INL justify 8.5× slower update rate. |
Compared with ADS1100A1IDBVT and MCP3421A0T-E/CH, the ADS1000A1IDBVT uniquely balances 12-bit precision, 128 SPS throughput, and sub-100 µA active current in SOT-23-6 - making it optimal for cost- and power-sensitive industrial and portable applications requiring deterministic timing.
Availability
ADS1000A1IDBVT is available at Aetrix Electronics and suitable for battery management, portable instrumentation, and industrial process control requiring stable component supply across extended temperature ranges (–40°C to +125°C) and multi-year production cycles.
Supply support for ADS1000A1IDBVT 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 over 90 years of innovation in precision data acquisition and low-power design.
The ADS1000 product line was engineered for ultra-compact, low-power sensor interfacing - delivering integrated PGA, I²C interface, and ratiometric conversion in sub-3 mm² packages to simplify front-end design for portable and distributed measurement systems.
FAQ
What is the I²C address of the ADS1000A1IDBVT?
The ADS1000A1IDBVT has a fixed 7-bit I²C slave address of 1001001 (0x49 in hexadecimal), designated by the "A1" suffix in the part number. This allows coexistence with ADS1000A0 (1001000 / 0x48) on the same I²C bus without address collision, supporting multi-sensor configurations with minimal firmware overhead.
Does the ADS1000A1IDBVT require an external voltage reference?
No, the ADS1000A1IDBVT uses a ratiometric architecture where VDD serves as both power supply and ADC reference voltage. This eliminates the need for an external precision reference, reducing component count and board space while maintaining accuracy proportional to supply stability - confirmed in Electrical Characteristics tables of SBAS357A.
How does the programmable gain amplifier (PGA) affect input voltage range?
The PGA in the ADS1000A1IDBVT scales the differential input range as ±VDD/PGA. At VDD = 5.0 V and PGA = 8, the full-scale input is ±625 mV; at PGA = 1, it is ±5.0 V. This allows the same device to measure either millivolt-level thermocouple outputs or full-rail battery voltages - all without changing external circuitry.
Can the ADS1000A1IDBVT operate in single-conversion mode?
Yes, the ADS1000A1IDBVT supports both continuous and single-conversion modes via the SC bit in its configuration register. In single-conversion mode, writing '1' to the ST/BSY bit triggers one conversion, after which the device automatically powers down - reducing average current to <1 µA in 1-second sampling intervals, as validated in Typical Characteristics Figure 1.
What is the maximum operating temperature for the ADS1000A1IDBVT?
The ADS1000A1IDBVT is rated for operation from –40°C to +125°C ambient temperature, with full electrical specifications guaranteed over –40°C to +85°C per SBAS357A. Its SOT-23-6 DBV package supports thermal dissipation up to 150°C junction temperature, enabling deployment in under-hood automotive or industrial control environments.
ADS1000A1IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
ADS1000A1IDBVT FAQ
1.How can I place an order for ADS1000A1IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1000A1IDBVT 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 ADS1000A1IDBVT reliable?
The price and inventory of ADS1000A1IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1000A1IDBVT is usually 5 days.
3.What payment methods are accepted for ADS1000A1IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1000A1IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1000A1IDBVT?
ADS1000A1IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1000A1IDBVT 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 ADS1000A1IDBVT?
For technical support, including ADS1000A1IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1000A1IDBVT requirements.
6.How does Aetrix verify that ADS1000A1IDBVT is sourced from the original manufacturer or authorized distributors?
All ADS1000A1IDBVT 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 ADS1000A1IDBVT meets industry standards.
7.What is the process for return or replacement of ADS1000A1IDBVT?
All ADS1000A1IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1000A1IDBVT, 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 ADS1000A1IDBVT part is unused and in its original packaging.
Return procedure for ADS1000A1IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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