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Texas Instruments ADS1014BQDGSRQ1
- Part No.:
- ADS1014BQDGSRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADS1014BQDGSRQ1.pdf
- Description:
- IC ADC 12BIT SIGMA-DELTA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,916
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Product details
Overview
ADS1014BQDGSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (–40°C to +125°C) automotive-qualified, 12-bit delta-sigma ADC with integrated PGA, programmable comparator, internal reference, and oscillator. It supports single-ended or differential input, operates from 2.0 V to 5.5 V, consumes 150 μA in continuous mode, and delivers up to 3.3 kSPS - used for real-time voltage monitoring in automotive cluster displays.
For engineers reviewing the ADS1014BQDGSRQ1 datasheet, ADS1014BQDGSRQ1 pinout, ADS1014BQDGSRQ1 application, or ADS1014BQDGSRQ1 equivalent, key selection criteria include its automotive temperature rating, I²C-compatible interface with four selectable addresses, ±256 mV to ±6.144 V programmable FSR, single-cycle settling, and integrated comparator for over/under-voltage detection in space-constrained sensor nodes.
Technical Context
The ADS1014BQDGSRQ1 implements a 250 kHz modulator clock derived from a 1-MHz internal oscillator, enabling single-cycle settling across all 7 programmable data rates (128–3300 SPS). Its delta-sigma architecture uses switched-capacitor sampling with configurable full-scale ranges via PGA[2:0], directly determining LSB size (e.g., 0.125 mV at ±256 mV FSR).
It integrates a low-drift voltage reference (error included in gain specs), digital comparator with ALERT/RDY open-drain output, and I²C interface supporting standard/fast/high-speed modes. The device operates in single-shot or continuous-conversion mode, with conversion results stored in a 16-bit data register accessible via I²C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit noise-free - guarantees monotonicity and no missing codes across –40°C to +125°C. |
| Max Sample Rate | 3.3 kSPS - enables real-time response for fast-changing analog signals like battery rail monitoring. |
| Supply Voltage Range | 2.0 V to 5.5 V - supports direct connection to automotive 3.3 V or 5 V rails without LDO. |
| Quiescent Current | 150 μA (continuous) - allows always-on sensing in low-power vehicle subsystems. |
| Input FSR Range | ±256 mV to ±6.144 V (via PGA) - permits precise measurement of both millivolt-level thermocouple outputs and 5 V sensor signals. |
| I²C Addresses | 4 pin-selectable (ADDR = GND/VDD) - simplifies multi-device bus design without address conflicts. |
| Comparator Output | ALERT/RDY open-drain - drives external MCU interrupt or LED without level-shifting. |
Pinout & Package
ADS1014BQDGSRQ1 is packaged in a 10-pin UQFN (NKS) package measuring 2.0 mm × 1.6 mm, optimized for high-density automotive PCB layouts. Thermal resistance RθJA is 126.3°C/W, supporting operation at full temperature grade without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR | I²C address select | Configures one of four I²C target addresses (0x48–0x4B); tied to GND or VDD only. |
| ALERT/RDY | Digital comparator output / conversion ready flag | Open-drain signal asserted low on threshold violation or conversion completion; requires external pullup. |
| GND | Analog ground reference | Primary return path for analog inputs and internal reference; must be connected to clean system ground plane. |
| AIN0 | Positive analog input | Accepts single-ended or differential input (with AIN1); voltage range limited to GND–0.3 V to VDD+0.3 V. |
| AIN1 | Negative analog input | Used with AIN0 for differential measurements; externally grounded for single-ended mode. |
| VDD | Power supply | Supplies entire IC including PGA, ADC core, and I²C interface; requires 0.1 μF decoupling capacitor to GND. |
| SDA | I²C bidirectional data line | Open-drain I/O; requires external pullup resistor (typically 4.7 kΩ) to VDD or host rail. |
| SCL | I²C clock input | Drives internal timing; accepts 0.01–3.4 MHz clocks (high-speed mode supported). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient, meeting automotive reliability and lifetime requirements. |
| Integrated programmable gain amplifier (PGA) | 6 selectable FSRs (±256 mV to ±6.144 V) eliminate need for external signal conditioning in mixed-signal systems. |
| Digital comparator with ALERT/RDY | Hardware-based over/under-voltage detection reduces MCU polling overhead and enables deterministic fault response. |
| Single-cycle settling time | Conversion completes in exactly 1/data rate period (e.g., 303 μs at 3.3 kSPS), enabling precise timing-critical sampling. |
| Internal oscillator and reference | Removes external crystal and reference components, reducing BOM count and board area in cost-sensitive modules. |
Applications
| Automotive Cluster Display Voltage Monitoring | Camera Module Power Rail Supervision |
|---|---|
Use Scenario: Real-time monitoring of 5 V and 3.3 V power rails supplying TFT display drivers and backlight controllers. IC Role / Device Role / Timing Role: ADC digitizes rail voltages at 1 kSPS; comparator triggers ALERT/RDY on deviation >±2% to initiate corrective action. Use Value: Enables autonomous power health reporting without CPU intervention, improving display system uptime and diagnostics coverage. |
Use Scenario: Continuous supervision of image sensor bias voltage (±1.8 V) and analog front-end supply (2.8 V) in ADAS camera modules. IC Role / Device Role / Timing Role: Configured for ±2.048 V FSR and 250 SPS; delivers stable 12-bit readings despite EMI-rich engine bay environment. Use Value: Prevents image corruption by detecting undervoltage before sensor lockup, satisfying ISO 26262 ASIL-B diagnostic requirements. |
| Center Information Display Touch Controller Reference | Automotive HVAC Sensor Signal Conditioning |
Use Scenario: Providing stable reference voltage and digitized feedback for resistive touch overlay calibration in infotainment head units. IC Role / Device Role / Timing Role: Operates in single-shot mode triggered by touch controller; measures internal reference drift and panel voltage drop. Use Value: Compensates for temperature-induced touch offset drift using on-board 12-bit measurements, eliminating factory recalibration. |
Use Scenario: Digitizing NTC thermistor and potentiometer outputs for cabin temperature and blend door position feedback. IC Role / Device Role / Timing Role: Uses ±0.256 V FSR to resolve <1 mV changes from 10 kΩ NTC; PGA gain set for optimal SNR at 25°C. Use Value: Achieves ±0.5°C temperature accuracy over –40°C to +85°C without external op-amps or precision references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit automotive ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1015BQDGSRQ1 | 4-channel (2 diff / 4 SE) input MUX; identical PGA, comparator, and timing specs. | Supports multi-sensor monitoring (e.g., battery + motor temp + cabin air) without external multiplexing. | Select when simultaneous acquisition from ≥2 analog sources is required; same footprint and software compatibility. |
| ADS1114BQDGSRQ1 | 16-bit resolution, 860 SPS max, same package and I²C interface; no internal oscillator (uses external clock). | Better DC accuracy for precision current sensing but slower update rate limits dynamic response. | Choose for high-accuracy static measurements (e.g., battery SOC) where 12-bit speed is excessive and layout allows external clock routing. |
Compared with ADS1014BQDGSRQ1, ADS1015BQDGSRQ1 adds channel flexibility at no cost to power or thermal performance, while ADS1114BQDGSRQ1 trades speed for resolution-making ADS1014BQDGSRQ1 optimal for cost-sensitive, latency-critical automotive voltage supervision.
Availability
ADS1014BQDGSRQ1 is available at Aetrix Electronics and suitable for automotive cluster displays, camera module power supervision, and HVAC sensor interfaces requiring stable component supply across extended temperature and long production lifecycles.
Supply support for ADS1014BQDGSRQ1 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 and embedded processing technologies, with deep expertise in automotive-grade signal chain solutions.
The ADS101x-Q1 product line delivers compact, low-power, AEC-Q100-compliant ADCs designed specifically for voltage, current, and sensor signal digitization in automotive infotainment, body electronics, and ADAS subsystems.
FAQ
What is the operating temperature range qualified for ADS1014BQDGSRQ1?
The ADS1014BQDGSRQ1 is AEC-Q100 Grade 1 qualified, meaning it is tested and guaranteed to operate continuously from –40°C to +125°C ambient temperature. This rating covers all electrical specifications in the datasheet, including gain error, offset drift, and I²C timing, making it suitable for under-hood and instrument cluster applications without derating.
Does ADS1014BQDGSRQ1 require an external crystal or clock source?
No, ADS1014BQDGSRQ1 contains a fully integrated 1-MHz oscillator that generates the internal modulator clock. No external crystal, resonator, or clock signal is needed - the device operates autonomously once powered. This eliminates BOM cost and layout complexity associated with timing components.
How does the programmable gain amplifier (PGA) in ADS1014BQDGSRQ1 affect measurement accuracy?
The PGA in ADS1014BQDGSRQ1 sets the full-scale range (±256 mV to ±6.144 V) and directly determines LSB size (e.g., 0.125 mV at ±256 mV). Gain error (±0.25%) and gain drift (5 ppm/°C typical) are specified across all FSRs and included in the device's total unadjusted error budget - no additional calibration is required for most automotive applications.
Can ADS1014BQDGSRQ1 measure single-ended and differential signals on the same hardware design?
Yes, ADS1014BQDGSRQ1 supports both configurations via software control. For single-ended mode, connect AIN1 to GND and configure the MUX bits for AIN0–GND; for differential mode, apply the signal across AIN0 and AIN1. The same physical pins and PCB layout accommodate both use cases without hardware change.
What is the function of the ALERT/RDY pin on ADS1014BQDGSRQ1?
The ALERT/RDY pin on ADS1014BQDGSRQ1 serves dual purpose: it asserts low as a comparator alert when conversion data exceeds programmed thresholds (Hi_thresh/Lo_thresh), or indicates conversion readiness in non-comparator mode. It is open-drain and requires an external pullup resistor to VDD or host logic rail.
ADS1014BQDGSRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 3.3k
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- PGA-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 2V ~ 5.5V
- Voltage - Supply, Digital:
- 2V ~ 5.5V
- Features:
- Internal Oscillator
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADS1014BQDGSRQ1 FAQ
1.How can I place an order for ADS1014BQDGSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1014BQDGSRQ1 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 ADS1014BQDGSRQ1 reliable?
The price and inventory of ADS1014BQDGSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1014BQDGSRQ1 is usually 5 days.
3.What payment methods are accepted for ADS1014BQDGSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1014BQDGSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1014BQDGSRQ1?
ADS1014BQDGSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1014BQDGSRQ1 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 ADS1014BQDGSRQ1?
For technical support, including ADS1014BQDGSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1014BQDGSRQ1 requirements.
6.How does Aetrix verify that ADS1014BQDGSRQ1 is sourced from the original manufacturer or authorized distributors?
All ADS1014BQDGSRQ1 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 ADS1014BQDGSRQ1 meets industry standards.
7.What is the process for return or replacement of ADS1014BQDGSRQ1?
All ADS1014BQDGSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1014BQDGSRQ1, 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 ADS1014BQDGSRQ1 part is unused and in its original packaging.
Return procedure for ADS1014BQDGSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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