My Inquiry
My Account
Texas Instruments ADS1000A1IDBVR
- Part No.:
- ADS1000A1IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6
- Datasheet:
-
ADS1000A1IDBVR.pdf
- Description:
- IC ADC 12BIT SIGMA-DELTA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,417
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS1000A1IDBVR 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 battery-powered voltage monitoring and portable sensor interfaces.
For engineers reviewing the ADS1000A1IDBVR datasheet, ADS1000A1IDBVR pinout, ADS1000A1IDBVR application, or ADS1000A1IDBVR equivalent, key selection considerations include its SOT-23-6 package, factory-set I²C address 1001001 (BD1 marking), 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 ADS1000A1IDBVR implements a switched-capacitor SAR ADC core with an integrated clock generator (no external clock required) and fully differential input stage. Its PGA provides selectable gain before digitization, enabling high-resolution measurement of sub-VDD signals while maintaining ratiometric accuracy against VDD drift.
It operates exclusively as an I²C slave device with open-drain SDA/SCL interface, supports General Call Reset (00h + 06h), and uses binary two's complement output format (12-bit right-justified, sign-extended to 16 bits). The ST/BSY bit controls conversion initiation in single mode and indicates busy status in continuous mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - ensures monotonicity and full-scale linearity across all PGA settings. |
| Data Rate | 128 SPS nominal - fixed sampling rate enables predictable timing for low-power polling or interrupt-driven reads. |
| PGA Gain | Selectable 1, 2, 4, or 8 - scales input differential voltage range to ±VDD/PGA, optimizing dynamic range for small-signal sources. |
| INL Error | ±1 LSB max - guarantees absolute accuracy within one least-significant bit over –40°C to +85°C. |
| Supply Current | 90 µA active / 0.05 µA power-down - enables ultra-low-power operation in battery-critical applications. |
| I²C Address | 1001001 (7-bit) - factory-programmed BD1 variant; allows coexistence with ADS1000A0 (1001000) on same bus. |
| Input Voltage Range | VIN± to GND: –0.2 V to VDD + 0.2 V - defines safe operating window for differential or single-ended signal conditioning. |
Pinout & Package
SOT-23-6 package with exposed pad (DBV suffix); 6-pin surface-mount outline measuring 2.9 mm × 1.6 mm × 1.2 mm. Pin 1 marked by dot or beveled edge; marking text direction indicates pin 1 orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Differential analog input positive | Accepts input voltage up to VDD + 0.2 V; used with VIN– to define full-scale differential range ±VDD/PGA. |
| VIN– | Differential analog input negative | Reference point for differential measurement; may be grounded for single-ended use (with resolution loss). |
| VDD | Power supply input | Supplies both analog and digital circuitry; serves as ratiometric reference for ADC conversion. |
| GND | Analog/digital ground | Common return path; must be low-impedance and separated from noisy digital grounds where precision is critical. |
| SDA | I²C bidirectional data line | Open-drain output/input; requires external pull-up resistor (1 kΩ–10 kΩ); acknowledges bytes during read/write. |
| SCL | I²C clock input | Asynchronous master-generated clock; ADS1000A1IDBVR 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 multi-byte synchronization overhead. |
| Ratiometric reference | Uses VDD as conversion reference - removes need for external precision voltage reference and simplifies BOM. |
| Factory-set I²C address | BD1 marking = 1001001 - enables plug-and-play dual-device configuration without address jumpers or software reconfiguration. |
| Low-power shutdown | 0.05 µA typical quiescent current - extends battery life in intermittent-read applications like portable data loggers. |
| Integrated clock generator | 275 kHz nominal internal oscillator - eliminates external crystal or clock source, reducing layout complexity and cost. |
Applications
| Battery Voltage Monitoring | Thermistor-Based Temperature Sensing |
|---|---|
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 battery sense signals into digital values via I²C for microcontroller processing. Use Value: 12-bit resolution at 128 SPS enables detection of <10 mV changes; PGA=8 supports direct measurement of 50 mV shunt drops without external amplification. | Use Scenario: Precision temperature measurement in HVAC control panels using NTC thermistor bridges. IC Role / Device Role / Timing Role: Differential A/D converter digitizing bridge imbalance voltage with built-in gain scaling for optimal ADC utilization. Use Value: ±1 LSB INL ensures stable calibration over –40°C to +85°C; ratiometric operation rejects VDD ripple common in industrial power rails. |
| Portable Instrumentation Input Stage | Industrial Process Voltage Supervision |
Use Scenario: Signal acquisition in handheld multimeters or environmental sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power, self-contained ADC subsystem handling analog front-end digitization and I²C communication. Use Value: 90 µA active current and automatic power-down after conversion extend operational life beyond 1 year on CR2032. | Use Scenario: Monitoring of 3.3V/5V rail integrity in PLC I/O modules with fault logging capability. IC Role / Device Role / Timing Role: Standalone voltage monitor interfacing to host controller via I²C for periodic health checks. Use Value: Factory-set I²C address (1001001) avoids bus conflicts in multi-sensor systems; SOT-23-6 footprint saves PCB area in space-constrained DIN-rail 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 |
|---|---|---|---|
| ADS1000A0IDBVR | I²C address 1001000 (BD0 marking); identical electrical specs and pinout | Same functionality but distinct bus address - used when multiple ADS1000s share one I²C bus | Select ADS1000A0IDBVR only when requiring second address on same bus; otherwise ADS1000A1IDBVR is functionally identical. |
| ADS1100IDBVR | 16-bit resolution, same package/interface, 128 SPS, higher INL (±2 LSB), 250 µA supply current | Higher precision needed for strain gauge or high-accuracy RTD measurements where 12-bit is insufficient | Choose ADS1100IDBVR when 16-bit resolution justifies 2.8× higher current draw and relaxed INL tolerance. |
Compared with ADS1000A0IDBVR, the ADS1000A1IDBVR offers identical performance but enables dual-device addressing on one I²C bus; versus ADS1100IDBVR, it trades resolution and accuracy for significantly lower power and tighter INL - making it optimal for cost- and battery-sensitive 12-bit applications.
Availability
ADS1000A1IDBVR is available at Aetrix Electronics and suitable for battery management, portable instrumentation, and industrial process voltage supervision requiring stable component supply, long-term lifecycle support, and RoHS-compliant SOT-23 packaging.
Supply support for ADS1000A1IDBVR 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 delivers compact, low-power, I²C-interfaced ADCs optimized for space-constrained, battery-operated systems where integration, simplicity, and supply efficiency outweigh raw resolution demands.
FAQ
What is the factory-programmed I²C address of the ADS1000A1IDBVR?
The ADS1000A1IDBVR has a fixed 7-bit I²C slave address of 1001001 (0x49 in hexadecimal), indicated by the BD1 marking on the package. This distinguishes it from the ADS1000A0IDBVR (1001000 / 0x48) and allows both variants to coexist on the same I²C bus without address conflict. The address cannot be modified in-circuit.
Does the ADS1000A1IDBVR require an external voltage reference?
No, the ADS1000A1IDBVR uses its VDD supply as the ratiometric reference for analog-to-digital conversion. This eliminates the need for an external precision voltage reference, reduces BOM count, and improves system-level accuracy by tracking supply variations. The full-scale input range is ±VDD/PGA, directly tied to the applied VDD voltage.
How does the programmable gain amplifier (PGA) affect the input voltage range of the ADS1000A1IDBVR?
The PGA in the ADS1000A1IDBVR sets the full-scale differential input range to ±VDD/PGA. With PGA = 8 and VDD = 5 V, the usable range is ±625 mV; with PGA = 1, it is ±5 V. This allows optimization of dynamic range for small-signal sources (e.g., thermistor bridges or current shunts) without external amplification, preserving SNR and simplifying front-end design.
Can the ADS1000A1IDBVR operate in high-speed I²C mode?
Yes, the ADS1000A1IDBVR supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) I²C modes. To enable High-Speed mode, the master must send the Hs master code (00001XXX) after the START condition. The ADS1000A1IDBVR automatically activates internal filters and communicates at up to 3.4 MHz until the next STOP condition.
What is the power consumption behavior of the ADS1000A1IDBVR in single-conversion mode?
In single-conversion mode, the ADS1000A1IDBVR draws 90 µA during active conversion and automatically enters power-down state afterward, reducing supply current to 0.05 µA typical. This behavior minimizes average current in duty-cycled applications - for example, reading once per second yields ~90 µA × (1/128 s) ≈ 0.7 µA average, extending battery life significantly.
ADS1000A1IDBVR 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:
- -
ADS1000A1IDBVR FAQ
1.How can I place an order for ADS1000A1IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1000A1IDBVR 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 ADS1000A1IDBVR reliable?
The price and inventory of ADS1000A1IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1000A1IDBVR is usually 5 days.
3.What payment methods are accepted for ADS1000A1IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1000A1IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1000A1IDBVR?
ADS1000A1IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1000A1IDBVR 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 ADS1000A1IDBVR?
For technical support, including ADS1000A1IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1000A1IDBVR requirements.
6.How does Aetrix verify that ADS1000A1IDBVR is sourced from the original manufacturer or authorized distributors?
All ADS1000A1IDBVR 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 ADS1000A1IDBVR meets industry standards.
7.What is the process for return or replacement of ADS1000A1IDBVR?
All ADS1000A1IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with ADS1000A1IDBVR, 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 ADS1000A1IDBVR part is unused and in its original packaging.
Return procedure for ADS1000A1IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS1000A1IDBVR Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
