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Texas Instruments ADS1015QNKSRQ1
- Part No.:
- ADS1015QNKSRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-UFQFN
- Datasheet:
-
ADS1015QNKSRQ1.pdf
- Description:
- AUTOMOTIVE 12-BIT, 3.3-KSPS, 4-C
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADS1015QNKSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified, 12-bit delta-sigma ADC with integrated PGA, 4-channel analog multiplexer (2 differential or 4 single-ended), internal reference and oscillator, I²C interface, and programmable comparator - delivering 3.3 kSPS sampling at ±0.256 V to ±6.144 V FSR for precision voltage monitoring in instrument clusters and camera modules.
For engineers reviewing the ADS1015QNKSRQ1 datasheet, ADS1015QNKSRQ1 pinout, ADS1015QNKSRQ1 application, or ADS1015QNKSRQ1 equivalent, key selection criteria include its automotive temperature range (–40°C to +125°C), low 150 µA operating current, single-cycle settling time, I²C address selectability (4 options), and dual-package availability (UQFN-10 and VSSOP-10).
Technical Context
The ADS1015QNKSRQ1 implements a 250 kHz modulator clock derived from a 1 MHz internal oscillator, enabling true 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 gain settings (±0.256 V to ±6.144 V), directly determining LSB size (0.125 mV to 3 mV).
It integrates a 4:1 analog multiplexer supporting both differential (AIN0–AIN1, AIN2–AIN3) and single-ended (AIN0–GND, AIN1–GND, AIN2–GND, AIN3–GND) configurations, with digital comparator logic that drives the open-drain ALERT/RDY pin in either traditional or window mode - all controlled via I²C-configurable registers including Config, Lo_thresh, Hi_thresh, and Conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit noise-free, no missing codes - ensures monotonicity and stable code transitions across full operating temperature range. |
| Max Sample Rate | 3.3 kSPS - enables real-time monitoring of fast-changing sensor signals such as throttle position or brake pressure. |
| Input Channels | 2 differential or 4 single-ended - supports multi-sensor acquisition (e.g., four temperature sensors or two bridge-based pressure transducers) without external MUX. |
| PGA Gain Range | ±0.256 V to ±6.144 V FSR - allows direct measurement of millivolt-level thermocouple outputs or full-rail automotive battery voltages. |
| Supply Voltage | 2.0 V to 5.5 V - compatible with 3.3 V microcontroller domains and 5 V legacy automotive subsystems. |
| Operating Current | 150 µA in continuous-conversion mode - reduces thermal load and extends battery life in always-on vehicle modules. |
| I²C Addresses | 4 pin-selectable addresses (via ADDR pin) - enables daisy-chaining up to four ADS1015QNKSRQ1 devices on one bus without address conflict. |
Pinout & Package
ADS1015QNKSRQ1 is available in NKS (UQFN-10, 2 mm × 1.6 mm) and DGS (VSSOP-10, 3 mm × 4.9 mm) packages. Both are 10-pin, surface-mount, lead-free, RoHS-compliant packages qualified for automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR | I²C address select input | Configures one of four I²C target addresses (0x48–0x4B); must be tied to GND, VDD, SDA, or SCL per datasheet table. |
| ALERT/RDY | Open-drain comparator output / conversion ready indicator | Active-low signal asserts when conversion result exceeds programmed thresholds; requires external pullup to VDD. |
| GND | Analog ground reference | Primary return path for analog inputs and internal reference; must be connected to clean system ground plane. |
| AIN0–AIN3 | Analog input terminals | Support 2-differential (AIN0–AIN1, AIN2–AIN3) or 4-single-ended (vs. GND) configurations; ESD-protected to ±2 kV HBM. |
| VDD | Power supply input | Supplies core logic, ADC, PGA, and reference; requires 0.1 µF ceramic decoupling capacitor placed within 2 mm of pin. |
| SCL | I²C serial clock input | Accepts standard/fast/high-speed I²C clocks (up to 3.4 MHz); requires external pullup resistor to VDD. |
| SDA | I²C bidirectional data line | Drives and receives I²C data; open-drain structure mandates external pullup to VDD. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive infotainment and cluster display reliability requirements. |
| Integrated PGA with 6 FSR options | Eliminates need for external signal conditioning amplifiers when measuring sensors with varying output ranges (e.g., 10 mV/K thermopiles vs. 0–5 V potentiometers). |
| Programmable digital comparator | Reduces host MCU polling overhead by generating hardware interrupts on over/under-voltage events - critical for battery management and fault detection. |
| Single-cycle settling time | Enables deterministic timing control: conversion completes in exactly 1/data_rate seconds - simplifies synchronization in time-triggered automotive software architectures. |
| Internal reference and oscillator | Removes dependency on external components - lowers BOM count, PCB area, and calibration complexity in space-constrained modules like rearview camera ECUs. |
Applications
| Camera Modules Without Processing | Automotive Center Information Displays |
|---|---|
Use Scenario: Monitoring analog video signal integrity and power rail stability in automotive backup/rearview cameras before digitization. IC Role / Device Role / Timing Role: ADC front-end for real-time analog voltage supervision - measures bias voltages, sensor supply rails, and CCD/CMOS analog output levels. Use Value: Detects out-of-spec conditions (e.g., VDD sag below 2.2 V or analog video amplitude drop >10%) and triggers ALERT/RDY to initiate fail-safe shutdown or diagnostic logging. | Use Scenario: Simultaneous acquisition of multiple analog sensor inputs (e.g., ambient light, touch panel voltage, display backlight feedback) in central infotainment head units. IC Role / Device Role / Timing Role: Multi-channel analog monitor interfacing directly to SoC I²C bus - performs round-robin sampling of 4 SE inputs at 128 SPS with automatic register updates. Use Value: Enables adaptive display brightness and haptic response without dedicated ADC resources on host processor - conserves MCU cycles for UI rendering and connectivity stacks. |
| Automotive Cluster Displays | General-Purpose Voltage and Current Monitoring |
Use Scenario: Reading fuel level sender resistance, oil temperature thermistor, and battery voltage in digital instrument clusters with strict ASIL-B timing constraints. IC Role / Device Role / Timing Role: Safety-aware analog acquisition node - delivers validated 12-bit conversions with known worst-case latency (≤781 µs at 128 SPS) for functional safety diagnostics. Use Value: Supports ISO 26262 diagnostic coverage by providing traceable, timestamped conversion results and comparator-triggered fault flags - reducing ASIL decomposition effort. | Use Scenario: Monitoring 12 V/24 V battery health, alternator output, and HVAC blower motor current in body control modules using shunt resistors and voltage dividers. IC Role / Device Role / Timing Role: Precision analog telemetry engine - acquires differential measurements across shunts (e.g., AIN0–AIN1) while rejecting common-mode noise from switching regulators. Use Value: Achieves ±0.25 LSB offset match between channels, enabling accurate current calculation without per-channel calibration - lowering production test time and cost. |
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 |
|---|---|---|---|
| ADS1015IDGSR | Commercial-grade (non-AEC-Q100), same pinout and register map - lacks automotive qualification and extended temperature support. | Not suitable for under-hood or dashboard-mounted systems requiring Grade 1 operation. | Select only for prototyping or non-automotive industrial use where cost is prioritized over qualification. |
| ADS1115QDGSRQ1 | 16-bit resolution, lower max sample rate (860 SPS), identical package and I²C interface - adds higher precision at expense of speed. | Better suited for high-accuracy temperature or strain gauge measurements where sub-millivolt resolution outweighs 3.3 kSPS requirement. | Choose when measurement accuracy dominates timing needs - e.g., cabin air quality sensor arrays versus real-time motor control feedback. |
Compared with ADS1015QNKSRQ1, ADS1015IDGSR omits automotive qualification and thermal robustness but retains identical functionality for lab use; ADS1115QDGSRQ1 trades speed for 4× resolution, making it optimal for static or slowly varying signals where quantization noise must be minimized.
Availability
ADS1015QNKSRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, camera module power supervision, and center display sensor monitoring requiring stable component supply across extended product lifecycles.
Supply support for ADS1015QNKSRQ1 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 was designed specifically for AEC-Q100-compliant automotive sensing applications - emphasizing low power, small footprint, functional safety readiness, and integration of reference, oscillator, and comparator to simplify ECU design.
FAQ
What is the maximum operating temperature range for the ADS1015QNKSRQ1?
The ADS1015QNKSRQ1 is AEC-Q100 Grade 1 qualified with a guaranteed operating ambient temperature range of –40°C to +125°C. This specification is validated across all electrical parameters in the datasheet and applies to both NKS (UQFN-10) and DGS (VSSOP-10) package variants of the ADS1015QNKSRQ1.
Does the ADS1015QNKSRQ1 require external components for basic operation?
No, the ADS1015QNKSRQ1 operates autonomously with only a 0.1 µF VDD decoupling capacitor and external pullup resistors on SDA/SCL/ALERT/RDY lines. It integrates a precision voltage reference, 1 MHz oscillator, PGA, and digital comparator - eliminating external crystals, references, op-amps, or comparators required by discrete ADC implementations.
How many analog input configurations does the ADS1015QNKSRQ1 support?
The ADS1015QNKSRQ1 supports four single-ended inputs (AIN0–AIN3 referenced to GND) or two differential pairs (AIN0–AIN1 and AIN2–AIN3), configured via the MUX[2:0] bits in the Config register. This flexibility enables simultaneous monitoring of diverse sensors - for example, AIN0–AIN1 for a pressure transducer bridge and AIN2–GND for a thermistor - within a single ADS1015QNKSRQ1 device.
Can the ADS1015QNKSRQ1 be used with a 5 V microcontroller I²C bus?
Yes, the ADS1015QNKSRQ1 supports I²C digital input voltages up to 5.5 V, making it fully compatible with 5 V microcontrollers. Its SDA and SCL pins tolerate VIH up to 5.5 V (min 0.7×VDD), and the ADDR pin accepts VDD, GND, SDA, or SCL logic levels - enabling seamless integration into mixed-voltage automotive systems without level shifters.
What is the purpose of the ALERT/RDY pin on the ADS1015QNKSRQ1?
The ALERT/RDY pin on the ADS1015QNKSRQ1 serves a dual function: it asserts as an open-drain comparator output when conversion results exceed user-defined thresholds (Hi_thresh/Lo_thresh), or indicates conversion completion in ready mode. This eliminates continuous I²C polling - reducing bus traffic and MCU wake-up frequency in low-power automotive modules using the ADS1015QNKSRQ1.
ADS1015QNKSRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-UFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 3.3k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-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:
- PGA, Selectable Address
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-UQFN (2x1.6)
- Mounting Type:
- Surface Mount, Wettable Flank
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADS1015QNKSRQ1 FAQ
1.How can I place an order for ADS1015QNKSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1015QNKSRQ1 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 ADS1015QNKSRQ1 reliable?
The price and inventory of ADS1015QNKSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1015QNKSRQ1 is usually 5 days.
3.What payment methods are accepted for ADS1015QNKSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1015QNKSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1015QNKSRQ1?
ADS1015QNKSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1015QNKSRQ1 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 ADS1015QNKSRQ1?
For technical support, including ADS1015QNKSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1015QNKSRQ1 requirements.
6.How does Aetrix verify that ADS1015QNKSRQ1 is sourced from the original manufacturer or authorized distributors?
All ADS1015QNKSRQ1 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 ADS1015QNKSRQ1 meets industry standards.
7.What is the process for return or replacement of ADS1015QNKSRQ1?
All ADS1015QNKSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1015QNKSRQ1, 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 ADS1015QNKSRQ1 part is unused and in its original packaging.
Return procedure for ADS1015QNKSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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