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Texas Instruments ADS1015QDGSRQ1
- Part No.:
- ADS1015QDGSRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADS1015QDGSRQ1.pdf
- Description:
- IC ADC 12BIT SIGMA-DELTA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,480
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Product details
Overview
ADS1015QDGSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified, 12-bit delta-sigma analog-to-digital converter with integrated PGA, 4-channel input multiplexer (2 differential or 4 single-ended), internal 1-MHz oscillator, low-drift voltage reference, and I²C interface supporting four pin-selectable addresses. It delivers 3.3 kSPS maximum data rate, 150 µA operating current, and ±256 mV to ±6.144 V programmable full-scale range - used for precision sensor monitoring in automotive cluster displays.
For engineers reviewing the ADS1015QDGSRQ1 datasheet, ADS1015QDGSRQ1 pinout, ADS1015QDGSRQ1 application, or ADS1015QDGSRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification, integrated comparator with ALERT/RDY output, 10-pin UQFN (NKS) or VSSOP (DGS) packaging, and support for automotive-grade voltage/current sensing without external clock or reference components.
Technical Context
The ADS1015QDGSRQ1 implements a delta-sigma ADC core with switched-capacitor sampling at 250 kHz modulator frequency derived from its internal 1-MHz oscillator. Its input stage supports configurable common-mode and differential impedance (6 MΩ and 4.9 MΩ typical at ±2.048 V FSR), enabling accurate measurement of high-impedance sources when buffered.
It operates in two conversion modes: single-shot (for ultra-low-power periodic sampling) and continuous-conversion (with programmable data rates from 128 to 3300 SPS). The digital comparator monitors conversion results against user-defined high/low thresholds and asserts the open-drain ALERT/RDY pin - configurable as traditional or window mode - without host processor intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit noise-free resolution with no missing codes - ensures monotonicity and reliable LSB-level accuracy in automotive sensor digitization. |
| Max Sample Rate | 3300 SPS - supports real-time monitoring of fast-changing signals like throttle position or brake pressure transducers. |
| Supply Range | 2.0 V to 5.5 V - compatible with 3.3 V and 5 V automotive subsystems without level-shifting circuitry. |
| Operating Current | 150 µA in continuous-conversion mode - enables always-on sensing in battery-sensitive modules such as camera ECU or infotainment power domains. |
| Input Configuration | 4 single-ended or 2 differential inputs via internal MUX - eliminates need for external signal routing switches in multi-sensor nodes. |
| PGA Gain Range | ±0.256 V to ±6.144 V full-scale - allows direct digitization of millivolt-level thermocouple outputs or volt-level battery voltage rails with one device. |
| I²C Address Options | Four pin-selectable addresses (via ADDR pin) - permits up to four ADS1015QDGSRQ1 devices on same bus for distributed sensor networks. |
| Comparator Output | Open-drain ALERT/RDY pin - simplifies integration with microcontroller interrupt inputs and supports daisy-chained alert signaling. |
Pinout & Package
ADS1015QDGSRQ1 is available in two AEC-Q100-qualified packages: 10-pin UQFN (NKS, 2 mm × 1.6 mm) and 10-pin VSSOP (DGS, 3 mm × 4.9 mm). Both packages share identical pin numbering and function mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR | I²C address select input | Configures one of four I²C target addresses (0x48–0x4B); pulled high/low or left floating to set device identity on shared bus. |
| ALERT/RDY | Digital comparator output / conversion ready indicator | Open-drain output requiring external pullup; asserts low on threshold violation or conversion completion per mode setting. |
| GND | Analog ground reference | Primary return path for analog inputs and internal reference; must be connected to clean system AGND plane. |
| AIN0–AIN3 | Configurable analog input terminals | Support single-ended (vs GND) or differential (e.g., AIN0–AIN1) acquisition; internally routed through MUX to ADC core. |
| VDD | Analog power supply | Supplies core, reference, and oscillator; requires 0.1 µF decoupling capacitor placed adjacent to pin. |
| SCL | I²C serial clock input | Accepts standard/fast/high-speed I²C clocks (up to 3.4 MHz); requires external pullup to VDD. |
| SDA | I²C bidirectional data line | Transfers configuration registers and conversion results; requires external pullup to VDD. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets thermal stress requirements for instrument cluster and center display ECUs. |
| Integrated programmable gain amplifier (PGA) | Eliminates external op-amp stages for scaling microvolt- to volt-range sensor outputs, reducing BOM count and layout area. |
| Single-cycle settling ADC | Ensures conversion time equals 1/data rate (e.g., 303 µs at 3.3 kSPS) - enables deterministic timing control in closed-loop systems. |
| Internal voltage reference and oscillator | Removes dependency on external precision references or crystal oscillators - simplifies design validation and reduces component sourcing risk. |
| Digital comparator with threshold registers | Offloads host MCU by autonomously detecting over/under-voltage events (e.g., battery undervoltage warning) and asserting hardware interrupt. |
| I²C interface with pin-selectable addressing | Enables scalable sensor node architecture using only two wires and no address jumpers or EEPROM programming. |
Applications
| Automotive Cluster Displays | Center Information Displays |
|---|---|
Use Scenario: Digitizing analog gauge driver signals (e.g., fuel level, coolant temperature) and switch status feedback in digital instrument clusters. IC Role / Device Role / Timing Role: Precision 12-bit ADC with PGA scales thermistor and potentiometer outputs to match microcontroller ADC input range; ALERT/RDY triggers immediate UI update on threshold breach. Use Value: Enables high-fidelity analog-to-digital conversion within tight space constraints while meeting ASIL-B functional safety readiness via documented FMEDA reports. | Use Scenario: Monitoring HVAC actuator position feedback, ambient light sensor output, and touch panel voltage levels in central infotainment displays. IC Role / Device Role / Timing Role: 4-channel SE acquisition captures multiple low-bandwidth sensor signals simultaneously; internal oscillator ensures consistent sampling without external clock routing. Use Value: Reduces PCB layer count by integrating reference, oscillator, and comparator - critical for compact, cost-sensitive display control modules. |
| Camera Modules Without Processing | General-Purpose Voltage and Current Monitoring |
Use Scenario: Reading lens motor current sense resistors and image sensor bias voltages in automotive surround-view camera ECUs. IC Role / Device Role / Timing Role: Differential input mode rejects common-mode noise from motor drive circuits; 3.3 kSPS rate captures transient current spikes during focus actuation. Use Value: Provides robust analog front-end for vision systems where EMI immunity and minimal external components are essential for EMC compliance. | Use Scenario: Real-time monitoring of 12 V battery voltage, 5 V rail integrity, and load current in body control modules and junction boxes. IC Role / Device Role / Timing Role: PGA configured for ±6.144 V FSR directly measures battery voltage; comparator alerts MCU on under/overvoltage conditions before brownout occurs. Use Value: Delivers automotive-grade accuracy and reliability without calibration drift compensation firmware - lowering software development effort. |
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 | Non-automotive (commercial) version; lacks AEC-Q100 qualification and functional safety documentation. | Not suitable for production automotive ECUs; limited to prototyping or non-safety-critical test equipment. | Select only for bench evaluation where Grade 1 temperature range and automotive reliability are not required. |
| ADS1115QDGSRQ1 | 16-bit resolution, lower max sample rate (860 SPS), same package and I²C interface; includes identical PGA, comparator, and MUX features. | Better DC accuracy for precision thermistor or strain gauge measurements; trade-off is reduced bandwidth for dynamic signals. | Choose when higher resolution outweighs speed - e.g., cabin temperature sensing vs. brake pressure monitoring. |
Compared with ADS1015IDGSR, the ADS1015QDGSRQ1 adds AEC-Q100 Grade 1 qualification and functional safety support, making it production-ready for automotive; versus ADS1115QDGSRQ1, it trades 4-bit resolution for >3× higher sample rate and lower power, favoring real-time control loops over static measurement fidelity.
Availability
ADS1015QDGSRQ1 is available at Aetrix Electronics and suitable for automotive cluster displays, center information displays, and general-purpose voltage and current monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADS1015QDGSRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive IC design and AEC-Q100-compliant product development.
The ADS101x-Q1 product line was designed specifically for automotive sensor signal conditioning - integrating precision ADC, PGA, reference, oscillator, and comparator into compact, qualified packages to reduce system complexity in instrument clusters and ADAS-related ECUs.
FAQ
What is the operating temperature range for ADS1015QDGSRQ1?
The ADS1015QDGSRQ1 is AEC-Q100 Grade 1 qualified with guaranteed operation from –40°C to +125°C ambient temperature. This range covers under-hood and dashboard-mounted applications including automotive cluster displays and center information displays. All electrical specifications in the datasheet are validated across this full range, and thermal metrics (e.g., RθJA = 126.3°C/W for NKS package) support thermal design at maximum TA.
Does ADS1015QDGSRQ1 require an external voltage reference or clock source?
No, the ADS1015QDGSRQ1 integrates both a low-drift voltage reference and a 1-MHz internal oscillator. These eliminate the need for external reference ICs or crystal oscillators, reducing bill-of-materials cost and board space. The reference and oscillator are factory-trimmed and characterized across temperature; their errors are included in the gain error and drift specifications provided in the Electrical Characteristics table.
How many analog input channels does ADS1015QDGSRQ1 support, and how are they configured?
The ADS1015QDGSRQ1 supports four single-ended (AIN0–AIN3 vs GND) or two differential (e.g., AIN0–AIN1 or AIN2–AIN3) input channels via its internal multiplexer. Configuration is controlled by the MUX[2:0] bits in the Config register. Unlike ADS1013-Q1 and ADS1014-Q1, only the ADS1015QDGSRQ1 provides this 4-SE/2-DE capability - enabling flexible sensor interfacing without external multiplexing hardware.
What is the purpose of the ALERT/RDY pin on ADS1015QDGSRQ1?
The ALERT/RDY pin on ADS1015QDGSRQ1 serves dual functions: it asserts as an open-drain comparator output when conversion results exceed user-defined high/low thresholds (in traditional or window mode), or it pulses low to indicate conversion completion in ready mode. This pin reduces host MCU polling overhead and enables hardware-triggered interrupt handling - critical for responsive fault detection in automotive voltage/current monitoring applications.
Can ADS1015QDGSRQ1 operate from a 2.0 V supply, and what impact does supply voltage have on performance?
Yes, ADS1015QDGSRQ1 operates from 2.0 V to 5.5 V. At 2.0 V, supply current drops to ~150 µA (same typical value as at 3.3 V), and power dissipation falls to 0.3 mW. However, the maximum usable full-scale range is constrained: with VDD = 2.0 V, the ±2.048 V and higher PGA ranges cannot be fully utilized since analog inputs must remain within GND – 0.3 V to VDD + 0.3 V. For 2.0 V operation, ±0.256 V or ±0.512 V FSR settings are recommended to maintain accuracy and avoid input clamping.
Is ADS1015QDGSRQ1 pin-compatible with other devices in the ADS101x-Q1 family?
ADS1015QDGSRQ1 shares identical pinout and package options (DGS and NKS) with ADS1013-Q1 and ADS1014-Q1, but functional differences exist: ADS1015QDGSRQ1 includes AIN2 and AIN3 pins (not connected on ADS1013-Q1/ADS1014-Q1), and its ALERT/RDY pin is fully functional whereas ADS1013-Q1 has NC at that location. Therefore, ADS1015QDGSRQ1 is not a drop-in replacement for ADS1013-Q1; however, it can replace ADS1014-Q1 in designs requiring additional analog inputs, provided firmware configures the extra channels.
ADS1015QDGSRQ1 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:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-PGA-ADC
- Ratio - S/H:ADC:
- -
- 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-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADS1015QDGSRQ1 FAQ
1.How can I place an order for ADS1015QDGSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1015QDGSRQ1 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 ADS1015QDGSRQ1 reliable?
The price and inventory of ADS1015QDGSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1015QDGSRQ1 is usually 5 days.
3.What payment methods are accepted for ADS1015QDGSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1015QDGSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1015QDGSRQ1?
ADS1015QDGSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1015QDGSRQ1 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 ADS1015QDGSRQ1?
For technical support, including ADS1015QDGSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1015QDGSRQ1 requirements.
6.How does Aetrix verify that ADS1015QDGSRQ1 is sourced from the original manufacturer or authorized distributors?
All ADS1015QDGSRQ1 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 ADS1015QDGSRQ1 meets industry standards.
7.What is the process for return or replacement of ADS1015QDGSRQ1?
All ADS1015QDGSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1015QDGSRQ1, 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 ADS1015QDGSRQ1 part is unused and in its original packaging.
Return procedure for ADS1015QDGSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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