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Texas Instruments ADS1114BQDGSRQ1
- Part No.:
- ADS1114BQDGSRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADS1114BQDGSRQ1.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,089
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Product details
Overview
ADS1114BQDGSRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (–40°C to +125°C) automotive-qualified, 16-bit delta-sigma ADC with integrated PGA, internal reference, oscillator, and I²C interface. It supports 1 differential or 1 single-ended input, programmable data rates up to 860 SPS, 150 µA operating current, and ±256 mV to ±6.144 V input ranges-enabling precise voltage monitoring in space-constrained automotive sensor nodes.
For engineers reviewing the ADS1114BQDGSRQ1 datasheet, ADS1114BQDGSRQ1 pinout, ADS1114BQDGSRQ1 application, or ADS1114BQDGSRQ1 equivalent, key selection criteria include its automotive qualification, single-channel PGA-assisted measurement capability, ALERT/RDY comparator output, and dual-package availability (VSSOP-10 and UQFN-10) for layout flexibility in cluster displays and camera modules.
Technical Context
The ADS1114BQDGSRQ1 implements a delta-sigma modulation architecture with on-chip digital filtering, delivering 16-bit no-missing-codes resolution and single-cycle settling. Its integrated PGA provides eight programmable gain settings (1× to 16×), enabling high-precision measurement of both microvolt-level and rail-to-rail signals without external amplification.
It operates over 2.0 V to 5.5 V supply and features an open-drain ALERT/RDY pin that asserts when conversion completes or when input exceeds user-defined thresholds-supporting autonomous over/under-voltage detection without host processor intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes-guarantees monotonicity and full-scale linearity for precision sensor digitization. |
| Data Rate | 8 to 860 SPS-configurable via I²C register; lower rates improve noise performance (e.g., 8 SPS yields 7.81 µVRMS at ±0.256 V FSR). |
| PGA Gain Range | 1× to 16×-maps ±256 mV to ±6.144 V full-scale input range, eliminating need for external signal conditioning. |
| Supply Current | 150 µA in continuous-conversion mode-enables always-on sensing in battery-sensitive automotive modules. |
| Input Configuration | 1 differential (AIN0–AIN1) or 1 single-ended (AIN0–GND)-simplifies analog front-end design for dedicated channel monitoring. |
| Interface | I²C with four pin-selectable addresses (ADDR = GND/VDD/SDA/SCL)-allows up to four devices on same bus without address conflict. |
| Operating Temp | –40°C to +125°C (AEC-Q100 Grade 1)-validated for under-hood and instrument cluster environments. |
Pinout & Package
ADS1114BQDGSRQ1 is available in two RoHS-compliant packages: DGS (10-pin VSSOP, 3.0 mm × 3.0 mm) and NKS (10-pin UQFN, 1.6 mm × 2.0 mm). Both packages support identical pin functions and thermal performance per TI SBAS563E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR | I²C address select | Configures one of four I²C target addresses (0x48–0x4B); ties to GND/VDD/SDA/SCL for hardware-based addressing. |
| ALERT/RDY | Digital output | Open-drain comparator alert or conversion-ready flag-requires external pullup; enables interrupt-driven host polling. |
| GND | Analog ground | Primary reference for analog inputs and internal reference; must be low-impedance connection to system AGND plane. |
| AIN0 | Analog input (+) | Positive input for differential (vs AIN1) or single-ended (vs GND) measurements-supports full PGA gain range. |
| AIN1 | Analog input (–) | Negative input for differential mode only; internally disconnected in single-ended configuration. |
| VDD | Power supply | 2.0–5.5 V analog/digital supply; requires 0.1 µF ceramic decoupling capacitor placed near pin. |
| SCL | I²C clock input | Master-generated clock; requires external pullup to VDD; supports Fast Mode (400 kHz) and High-Speed Mode (3.4 MHz). |
| SDA | I²C bidirectional data | Open-drain data line; shares pullup with SCL; handles read/write commands and conversion result transfer. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient operation from –40°C to +125°C-meets reliability requirements for instrument clusters and ADAS sensor interfaces. |
| Integrated PGA with 8 gains | Eliminates external op-amp stages for small-signal sensors (e.g., thermocouples, strain gauges), reducing BOM count and PCB area. |
| Programmable digital comparator | Configurable high/low thresholds stored in registers-enables autonomous voltage monitoring without continuous host polling or firmware overhead. |
| Internal 2.048-V reference | Low-drift (5 ppm/°C typical) reference ensures stable full-scale accuracy across temperature-removes need for external precision reference IC. |
| Single-cycle settling | Guarantees valid conversion result after each data rate interval-simplifies timing control in deterministic real-time systems. |
Applications
| Automotive Cluster Displays | Camera Module Voltage Monitoring |
|---|---|
Use Scenario: Real-time monitoring of backlight LED driver supply voltage and temperature-sensor outputs in digital instrument clusters. IC Role / Device Role / Timing Role: Single-channel ADC digitizes analog feedback signals; ALERT/RDY triggers MCU interrupt upon out-of-range condition. Use Value: Enables fail-safe display dimming or warning activation without CPU polling-reducing MCU load and improving response latency. | Use Scenario: Monitoring power rail integrity and image sensor bias voltages in automotive rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Measures VDD and analog sensor bias lines using single-ended mode; PGA gain set to 1× for rail monitoring or 8× for low-noise sensor bias tracking. Use Value: Detects brownout or overvoltage events before image corruption occurs-prevents false object detection in ADAS pipelines. |
| Center Information Display | General-Purpose Automotive Sensing |
Use Scenario: Digitizing HVAC actuator position feedback, touch-panel reference voltages, and ambient light sensor outputs in central infotainment displays. IC Role / Device Role / Timing Role: Configured in differential mode for noise-immune potentiometer readings; uses 128 SPS data rate for smooth UI response. Use Value: Delivers 16-bit resolution with <1 LSB INL error-ensuring accurate actuator positioning and consistent brightness calibration. | Use Scenario: Monitoring battery voltage, 12-V rail stability, and cabin temperature sensor outputs across multiple vehicle ECUs. IC Role / Device Role / Timing Role: Operates in continuous-conversion mode at 8 SPS; ALERT/RDY alerts MCU only on threshold breach-minimizing wakeups. Use Value: Achieves 150 µA quiescent current-extending sleep-mode battery life in always-on telematics and gateway modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit automotive ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115BQDGSRQ1 | 4 single-ended / 2 differential inputs; identical PGA, reference, and comparator; same package options. | Supports multi-channel monitoring (e.g., simultaneous battery + temperature + humidity) without multiplexer sequencing. | Select when >1 analog input is required; retains same software stack and layout compatibility except for unused AIN2/AIN3 routing. |
| ADS1014BQDGSRQ1 | 12-bit resolution; 3300 SPS max; same PGA, reference, comparator, and package; lower power (150 µA @ 3300 SPS). | Better suited for high-speed, lower-accuracy applications like motor phase current sampling where 12-bit resolution suffices. | Select when higher sample rate outweighs resolution needs; trade-off is ~24 dB lower SNR versus ADS1114BQDGSRQ1 at matched data rates. |
Compared with ADS1115BQDGSRQ1, ADS1114BQDGSRQ1 reduces channel count and BOM cost for single-input use cases; compared with ADS1014BQDGSRQ1, it delivers 12 dB higher dynamic range and guaranteed monotonicity-critical for closed-loop automotive control feedback.
Availability
ADS1114BQDGSRQ1 is available at Aetrix Electronics and suitable for automotive cluster displays, camera module voltage monitoring, and center information display designs requiring stable component supply across extended temperature and long production lifecycles.
Supply support for ADS1114BQDGSRQ1 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 ADS111x-Q1 product line was designed specifically for automotive sensor interfacing-integrating PGA, comparator, reference, and oscillator into ultra-small packages to meet stringent AEC-Q100 reliability and space constraints.
FAQ
What is the maximum sample rate supported by the ADS1114BQDGSRQ1?
The ADS1114BQDGSRQ1 supports a maximum data rate of 860 samples per second (SPS) in continuous-conversion mode. This rate is programmable via the CONFIG register and includes eight discrete settings: 8, 16, 32, 64, 128, 250, 475, and 860 SPS. At 860 SPS, the device maintains 16-bit resolution with no missing codes, though RMS noise increases to 35.83 µV at ±0.256 V full-scale range.
Does the ADS1114BQDGSRQ1 require an external reference voltage?
No, the ADS1114BQDGSRQ1 does not require an external reference voltage. It integrates a low-drift 2.048-V internal reference with typical drift of 5 ppm/°C over temperature. This reference is used for all conversions and supports the full ±0.256 V to ±6.144 V input range via the PGA-eliminating the need for external reference components in most automotive sensor applications.
How many analog input channels does the ADS1114BQDGSRQ1 support?
The ADS1114BQDGSRQ1 supports one analog input channel configured either as a differential pair (AIN0–AIN1) or as a single-ended input (AIN0–GND). Unlike the ADS1115BQDGSRQ1, it does not support additional inputs (AIN2/AIN3) or multiplexed scanning-making it optimized for dedicated, high-accuracy single-signal monitoring in automotive subsystems.
What package options are available for the ADS1114BQDGSRQ1?
The ADS1114BQDGSRQ1 is offered in two surface-mount packages: the 10-pin VSSOP (DGS, 3.0 mm × 3.0 mm) and the 10-pin UQFN (NKS, 1.6 mm × 2.0 mm). Both packages share identical pinout, thermal characteristics, and electrical specifications per TI SBAS563E. The UQFN option provides smaller footprint and improved thermal resistance (RθJA = 126.3°C/W vs. 170.9°C/W for VSSOP), supporting denser automotive PCB layouts.
Is the ADS1114BQDGSRQ1 compatible with standard I²C buses?
Yes, the ADS1114BQDGSRQ1 is fully compatible with standard I²C buses, supporting Fast Mode (up to 400 kHz) and High-Speed Mode (up to 3.4 MHz). It features four hardware-selectable I²C addresses (0x48–0x4B) via the ADDR pin, allowing up to four devices on the same bus. All timing parameters-including tLOW, tHIGH, tSUDAT, and tHDDAT-comply with JEDEC Standard JESD84-A for robust interoperability with common microcontrollers and SoCs.
ADS1114BQDGSRQ1 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:
- 16
- Sampling Rate (Per Second):
- 860
- Number of Inputs:
- 1, 2
- 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
ADS1114BQDGSRQ1 FAQ
1.How can I place an order for ADS1114BQDGSRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS1114BQDGSRQ1 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 ADS1114BQDGSRQ1 reliable?
The price and inventory of ADS1114BQDGSRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS1114BQDGSRQ1 is usually 5 days.
3.What payment methods are accepted for ADS1114BQDGSRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS1114BQDGSRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS1114BQDGSRQ1?
ADS1114BQDGSRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS1114BQDGSRQ1 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 ADS1114BQDGSRQ1?
For technical support, including ADS1114BQDGSRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS1114BQDGSRQ1 requirements.
6.How does Aetrix verify that ADS1114BQDGSRQ1 is sourced from the original manufacturer or authorized distributors?
All ADS1114BQDGSRQ1 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 ADS1114BQDGSRQ1 meets industry standards.
7.What is the process for return or replacement of ADS1114BQDGSRQ1?
All ADS1114BQDGSRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with ADS1114BQDGSRQ1, 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 ADS1114BQDGSRQ1 part is unused and in its original packaging.
Return procedure for ADS1114BQDGSRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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