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Texas Instruments ADS1000A0IDBVT
- Part No.:
- ADS1000A0IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1000A0IDBVT.pdf
- Description:
- IC ADC 12BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:738
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Product details
Overview
ADS1000A0IDBVT 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 referenced to VDD (2.7V–5.5V). It delivers ±1 LSB INL, 90 µA active supply current, and operates in single- or continuous-conversion mode - ideal for space-constrained battery-powered voltage monitoring and sensor interfaces.
For engineers reviewing the ADS1000A0IDBVT datasheet, ADS1000A0IDBVT pinout, ADS1000A0IDBVT application, or ADS1000A0IDBVT equivalent, key selection criteria include its SOT-23-6 package, factory-set I²C address 1001000b (A0 variant), PGA-configurable input range, single-cycle conversion timing, and compatibility with standard/fast/high-speed I²C buses up to 3.4 MHz.
Technical Context
The ADS1000A0IDBVT integrates a switched-capacitor SAR ADC core, on-chip clock generator (275 kHz nominal), and I²C slave interface with no clock-stretching capability. Its differential input stage provides 2.4 MΩ/PGA differential impedance and 8 MΩ common-mode impedance, enabling direct connection to bridge sensors and thermistors without external signal conditioning.
Conversion is ratiometric to VDD, eliminating need for external reference; output codes are 12-bit binary two's complement, right-justified and sign-extended to 16 bits. The device supports two operating modes via SC bit: continuous conversion (ST/BSY always reads '1') or single conversion (ST/BSY toggles to initiate and indicate busy state).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - ensures monotonicity and full-scale linearity for precision measurement. |
| Data Rate | 128 SPS (typical) - fixed sampling rate suitable for slow-varying signals like temperature or battery voltage. |
| PGA Gain | Selectable 1, 2, 4, or 8 - scales small differential inputs (e.g., mV-level bridge outputs) to maximize ADC utilization. |
| INL Error | ±1 LSB max - guarantees accurate end-point linearity across full temperature range (–40°C to +125°C). |
| Supply Current | 90 µA active / 0.05 µA power-down - enables ultra-low-power operation in portable instrumentation. |
| I²C Address | 1001000b (7-bit, A0 variant) - allows coexistence with ADS1000A1 (1001001b) on same bus without address conflict. |
| Operating Voltage | 2.7V to 5.5V - supports direct interfacing with Li-ion, alkaline, and 3.3V/5V system rails. |
Pinout & Package
SOT-23-6 package with exposed pad (DBV suffix); marking "BD0" indicates A0 I²C address variant. Pin 1 identified by marking orientation.
| 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 | Common-mode range extends to GND – 0.2 V; must satisfy absolute voltage limits relative to GND and VDD. |
| VDD | Power supply | Provides both power and reference voltage; bypass capacitor (0.1 µF) required for transient current spikes during conversion. |
| GND | Analog/digital ground | Single ground plane recommended; separates noise-sensitive analog section from digital I²C interface. |
| SDA | I²C bidirectional data line | Open-drain output; requires external pull-up resistor (1 kΩ–10 kΩ) compatible with bus speed and capacitance. |
| SCL | I²C clock input | Input-only; driven solely by master - no clock stretching, enabling deterministic timing in multi-device systems. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle conversion | Completes each 12-bit conversion in one internal clock period (~7.7 ms at 128 SPS), minimizing latency for responsive sensing. |
| Ratiometric reference | Uses VDD as reference - eliminates external voltage reference cost and drift, while maintaining accuracy over supply variation. |
| Factory-programmed I²C address | A0 variant (1001000b) enables plug-and-play integration alongside A1 variant (1001001b) without software reconfiguration. |
| Low-power shutdown | 0.05 µA typical quiescent current in power-down mode - extends battery life in intermittent-sampling applications. |
| Full I²C speed compatibility | Operates across standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) modes - future-proofs design against controller upgrades. |
Applications
| Battery Voltage Monitoring | Bridge Sensor Interface |
|---|---|
|
Use Scenario: Real-time tracking of Li-ion cell voltage during charge/discharge cycles in portable medical devices. IC Role / Device Role / Timing Role: ADC front-end converting differential sense voltage into 12-bit digital values via I²C for microcontroller processing. Use Value: 90 µA active current and automatic power-down after conversion extend runtime; PGA gain = 8 resolves sub-10 mV changes at full scale. |
Use Scenario: Reading strain gauge outputs in industrial weight scales with minimal PCB area. IC Role / Device Role / Timing Role: Differential A/D converter acquiring ratiometric measurements from Wheatstone bridges without external op-amps. Use Value: 2.4 MΩ/PGA input impedance prevents loading of high-Z bridge sources; ±1 LSB INL ensures calibration stability over temperature. |
| Consumer Temperature Sensing | Industrial Process Control Input |
|
Use Scenario: Ambient temperature measurement using NTC thermistors in smart home thermostats. IC Role / Device Role / Timing Role: Single-ended ADC (VIN− grounded) digitizing thermistor voltage divider output with programmable gain. Use Value: 128 SPS sampling rate matches thermal time constants; 2.7V–5.5V operation supports direct connection to 3.3V MCU rails. |
Use Scenario: Analog input module for PLCs measuring 4–20 mA loop signals via shunt resistor. IC Role / Device Role / Timing Role: Precision ADC capturing low-level differential voltages across precision shunts in noisy factory environments. Use Value: Differential architecture rejects common-mode noise; –40°C to +125°C operating range ensures reliability in uncontrolled enclosures. |
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 |
|---|---|---|---|
| ADS1100A0IDBVT | 16-bit resolution, same SOT-23-6 package and I²C address (1001000b), but 128 SPS max and higher 250 µA supply current. | Higher resolution required for precision metrology; less suitable for ultra-low-power battery operation. | Select ADS1100A0IDBVT when 16-bit accuracy outweighs 2.8× higher active current and identical footprint. |
| MCP3421A0T-E/CH | 18-bit delta-sigma ADC, same I²C interface and SOT-23-6 package, but fixed 3.75 SPS (18-bit) or 15 SPS (16-bit) - no PGA, only internal 1x/2x/4x/8x gain. | Targeted at high-resolution static measurements (e.g., weigh scales); lacks single-cycle conversion and true 128 SPS flexibility. | Choose MCP3421A0T-E/CH for applications prioritizing raw resolution over speed and low-power responsiveness. |
Compared with ADS1000A0IDBVT, ADS1100A0IDBVT trades lower power for higher resolution, while MCP3421A0T-E/CH sacrifices speed and dynamic response for enhanced noise immunity and bit depth - making ADS1000A0IDBVT optimal for balanced performance in portable, battery-aware systems.
Availability
ADS1000A0IDBVT is available at Aetrix Electronics and suitable for battery management, portable instrumentation, and industrial sensor interface applications requiring stable component supply and long-term production continuity.
Supply support for ADS1000A0IDBVT 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 solutions.
The ADS1000 series was designed specifically for space- and power-constrained applications needing integrated, easy-to-deploy ADC functionality - targeting portable instrumentation, consumer electronics, and industrial monitoring systems.
FAQ
What is the I²C address of the ADS1000A0IDBVT?
The ADS1000A0IDBVT has a factory-programmed 7-bit I²C slave address of 1001000b (0x48 hexadecimal), confirmed by its BD0 marking and orderable suffix "A0". This distinguishes it from the ADS1000A1IDBVT (1001001b, BD1 marking), enabling dual-device configurations on the same bus without address collision.
Does the ADS1000A0IDBVT require an external voltage reference?
No, the ADS1000A0IDBVT uses its VDD supply rail as the reference voltage for ratiometric conversion - eliminating the need for an external reference. This simplifies BOM, reduces cost, and maintains accuracy across VDD variations from 2.7V to 5.5V, provided the supply is adequately bypassed with a 0.1 µF capacitor.
How does the programmable gain amplifier (PGA) affect input range in the ADS1000A0IDBVT?
The PGA in the ADS1000A0IDBVT sets the full-scale differential input voltage as ±VDD/PGA. At gain = 8 and VDD = 3.3V, the usable input range is ±0.4125 V; at gain = 1, it expands to ±3.3 V. This allows precise digitization of small signals (e.g., mV-level bridge outputs) without external amplification while preserving 12-bit resolution.
Can the ADS1000A0IDBVT operate in high-speed I²C mode?
Yes, the ADS1000A0IDBVT fully supports high-speed I²C mode (up to 3.4 MHz) - in addition to standard (100 kHz) and fast (400 kHz) modes. To enable high-speed mode, the master must send the Hs master code (00001XXX) after START; the ADS1000A0IDBVT activates internal filters and communicates at elevated speed until the next STOP condition.
What is the power consumption of the ADS1000A0IDBVT in single-conversion mode?
In single-conversion mode, the ADS1000A0IDBVT draws 90 µA during active conversion and automatically powers down to 0.05 µA (typical) after result storage. This ultra-low quiescent current significantly extends battery life in wake-on-event or periodic-sampling architectures - for example, achieving multi-year operation on a CR2032 coin cell with 1-second sampling intervals.
ADS1000A0IDBVT 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:
- -
ADS1000A0IDBVT FAQ
1.How can I place an order for ADS1000A0IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1000A0IDBVT 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 ADS1000A0IDBVT reliable?
The price and inventory of ADS1000A0IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1000A0IDBVT is usually 5 days.
3.What payment methods are accepted for ADS1000A0IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1000A0IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1000A0IDBVT?
ADS1000A0IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1000A0IDBVT 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 ADS1000A0IDBVT?
For technical support, including ADS1000A0IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1000A0IDBVT requirements.
6.How does Aetrix verify that ADS1000A0IDBVT is sourced from the original manufacturer or authorized distributors?
All ADS1000A0IDBVT 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 ADS1000A0IDBVT meets industry standards.
7.What is the process for return or replacement of ADS1000A0IDBVT?
All ADS1000A0IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with ADS1000A0IDBVT, 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 ADS1000A0IDBVT part is unused and in its original packaging.
Return procedure for ADS1000A0IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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