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Texas Instruments ADS7041IRUGR
- Part No.:
- ADS7041IRUGR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-XFQFN
- Datasheet:
-
ADS7041IRUGR.pdf
- Description:
- IC ADC 10BIT SAR 8X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,554
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Product details
Overview
ADS7041IRUGR from Texas Instruments is an ultra-low-power, 10-bit, 1-MSPS successive-approximation register (SAR) analog-to-digital converter in an X2QFN-8 package (1.5 mm × 1.5 mm). It features unipolar input range (0 V to AVDD), ±0.8-LSB max INL, 61-dB SNR at 3-V AVDD, and operates from –40°C to 125°C - ideal for space-constrained, battery-powered sensor acquisition.
For engineers reviewing the ADS7041IRUGR datasheet, ADS7041IRUGR pinout, ADS7041IRUGR application, or ADS7041IRUGR equivalent, this page delivers verified electrical specs, SPI interface timing constraints, thermal metrics, offset calibration behavior, and validated alternative options for low-power industrial and medical sensing designs.
Technical Context
The ADS7041IRUGR implements a capacitor-based SAR architecture with integrated sample-and-hold, using AVDD as both analog supply and reference voltage. Its conversion is triggered on the CS falling edge, with serial data output synchronized to SCLK falling edges - delivering zero-latency 10-bit results in straight binary format.
It supports independent AVDD (1.65 V–3.6 V) and DVDD (1.65 V–3.6 V) supplies, complies with JESD8-7A for digital I/O at 1.65 V–1.95 V, and includes factory-trimmed offset calibration that can be re-initiated during operation. Acquisition time is fixed at 235 ns, enabling deterministic timing in real-time control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC with no missing codes (NMC) - ensures monotonicity and full code coverage across temperature. |
| Throughput Rate | 1 MSPS maximum - achieved with 14-MHz SCLK; supports real-time sampling of fast transients in motor control or ultrasonic flow meters. |
| INL / DNL | ±0.8 LSB max INL, ±0.7 LSB max DNL - enables accurate DC measurement and linearity-critical applications like glucose meter front-ends. |
| Power at 1 MSPS | 189 µW at 1.8-V AVDD; 600 µW at 3-V AVDD - allows continuous high-speed sampling in coin-cell-powered wearables. |
| Analog Input Range | 0 V to AVDD (unipolar) - simplifies signal conditioning by eliminating external level-shifting for single-supply sensors. |
| Reference Source | AVDD serves as internal reference - eliminates need for external reference IC, reducing BOM count and PCB area. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial motor drives, and portable medical equipment. |
Pinout & Package
X2QFN-8 package (RUG), 1.5 mm × 1.5 mm × 0.35 mm profile - industry's smallest SAR ADC footprint, smaller than 0805 (2012 metric) SMD components.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINP | Analog input, positive | Primary analog signal input; accepts 0 V to AVDD; differential pair with AINM for noise rejection in noisy environments. |
| AINM | Analog input, negative | Common-mode reference input; supports ±100 mV common-mode offset - enables ground-referenced remote sensor interfacing. |
| AVDD | Analog power & reference | Supplies analog circuitry and defines full-scale range (FSR = AVDD); requires ≥200 nF ceramic decoupling (1 µF recommended). |
| DVDD | Digital I/O supply | Independent 1.65 V–3.6 V supply for SPI interface; JESD8-7A compliant at 1.65 V–1.95 V - enables direct connection to low-voltage MCUs. |
| GND | Analog/digital ground | Single ground reference for all signals; layout best practice requires low-inductance connection to minimize noise coupling into analog path. |
| CS | Chip-select input | Active-low frame initiator; falling edge triggers sampling; rising edge places SDO in high-impedance state - enables multi-device SPI bus sharing. |
| SCLK | Serial clock input | Up to 14 MHz; controls conversion timing and serial data output; falling edges clock out 12-bit frame (2 leading zeros + 10-bit result). |
| SDO | Serial data output | CMOS-compatible SPI output; 12-bit frame aligned to SCLK falling edges; high-impedance after CS rise - eliminates need for external tri-state logic. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent power | Less than 1 µW at 1 kSPS with 3-V AVDD - extends battery life in intermittent-sampling IoT nodes beyond 10 years. |
| Zero data latency | 1-MSPS throughput with no pipeline delay - critical for closed-loop motor control where ADC result must drive next PWM cycle immediately. |
| Integrated offset calibration | User-triggerable calibration reduces system-level offset drift; calibrated EO ≤ ±2 LSB over temperature - lowers post-processing overhead. |
| SPI-compatible serial interface | 14-MHz SCLK support, 12-bit frame (2 sync bits + 10 data bits), CS-controlled framing - interoperates with ARM Cortex-M, MSP430, and RISC-V host controllers. |
| Wide supply independence | AVDD and DVDD operate independently across 1.65 V–3.6 V - permits mixed-voltage systems (e.g., 3.3-V analog sensor + 1.8-V MCU core). |
Applications
| Wearable Fitness Sensors | Ultrasonic Flow Meters |
|---|---|
|
Use Scenario: Continuous acquisition of accelerometer, gyroscope, or bio-impedance signals in wrist-worn devices powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor outputs at 100–500 kSPS with minimal power draw and no external reference. Use Value: 189 µW at 1 MSPS enables >2-year battery life at 100-kSPS sampling; 1.5-mm² footprint frees PCB space for additional sensors or antennas. |
Use Scenario: High-precision time-of-flight measurement in portable gas/liquid flow meters using piezoelectric transducers. IC Role / Device Role / Timing Role: Digitizing differential analog echoes with 61-dB SNR and <235-ns acquisition window to resolve sub-microsecond delays. Use Value: ±0.8-LSB INL ensures repeatable flow calculation accuracy; unipolar 0–AVDD input matches transducer amplifier output swing. |
| Portable Medical Equipment | Motor Control Feedback |
|
Use Scenario: Blood glucose meter front-end measuring amperometric current from test-strip electrochemical reaction. IC Role / Device Role / Timing Role: Low-noise, calibrated ADC converting nanoamp-level currents via transimpedance amplifier output. Use Value: Integrated offset calibration eliminates manual calibration steps; –75-dB THD prevents harmonic distortion from corrupting low-amplitude signals. |
Use Scenario: Real-time current sensing in BLDC motor inverters for field-oriented control (FOC) using shunt resistors. IC Role / Device Role / Timing Role: High-speed ADC sampling phase currents with deterministic 1-µs cycle time and zero-latency output. Use Value: 1-MSPS throughput meets FOC loop timing requirements; independent AVDD/DVDD allows isolation of analog sensing from noisy digital gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7042IRUGR | Same X2QFN-8 package, identical pinout, but 12-bit resolution and 0.5-MSPS max rate; higher power (320 µW at 0.5 MSPS, 3-V AVDD) | Better DC precision required (e.g., high-accuracy thermistor readout), lower speed acceptable | Select ADS7042IRUGR when 12-bit resolution outweighs 2× speed reduction and 70% higher power at target throughput. |
| ADS7038IRUGR | 8-channel, 10-bit SAR with sequencer; same 1-MSPS per channel, larger 16-pin X2QFN (2.5 mm × 2.5 mm); 300 µW at 1 MSPS, 3-V AVDD | Multi-sensor systems needing simultaneous sampling (e.g., 3-phase motor current + temperature + voltage) | Choose ADS7038IRUGR only when channel count justifies 2.3× larger footprint and 50% higher power versus single-channel ADS7041IRUGR. |
Compared with ADS7041IRUGR, ADS7042IRUGR trades speed and power for resolution, while ADS7038IRUGR adds channel density at cost of size and efficiency - making ADS7041IRUGR optimal for ultra-compact, single-channel, high-throughput sensing.
Availability
ADS7041IRUGR is available at Aetrix Electronics and suitable for wearable fitness sensors, ultrasonic flow meters, portable medical equipment, and motor control feedback requiring stable component supply across extended product lifecycles.
Supply support for ADS7041IRUGR 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 decades of expertise in precision data converters and low-power design.
The ADS7041IRUGR belongs to TI's ultra-low-power SAR ADC portfolio, engineered specifically for battery-operated, space-constrained applications demanding high performance without compromising size or energy efficiency.
FAQ
What is the reference voltage source for ADS7041IRUGR?
The ADS7041IRUGR uses AVDD as its internal reference voltage - meaning the full-scale input range equals AVDD (0 V to AVDD). This eliminates the need for an external reference IC, reduces BOM cost, and simplifies layout. A minimum 200-nF ceramic capacitor is required on AVDD, with 1-µF recommended for optimal noise immunity and stability during switching events.
Does ADS7041IRUGR support true differential input mode?
No, ADS7041IRUGR does not support true differential input mode. It operates in pseudo-differential configuration: AINP accepts 0 V to AVDD, while AINM accepts –100 mV to +100 mV, enabling common-mode rejection for remote sensors. The device computes (AINP – AINM) as the input voltage, but the full-scale range remains unipolar relative to GND.
What is the minimum SCLK frequency required for ADS7041IRUGR operation?
The ADS7041IRUGR specifies a minimum SCLK frequency of 16 kHz (0.016 MHz) in its timing characteristics table. This allows ultra-low-power operation at sub-kSPS rates - for example, 1 kSPS sampling consumes less than 1 µW at 3-V AVDD, making ADS7041IRUGR suitable for wake-on-event sensor hubs with long idle periods.
How does the offset calibration function in ADS7041IRUGR?
ADS7041IRUGR includes factory-trimmed offset calibration that can be re-initiated by toggling the CS pin under specific timing conditions (detailed in Section 8.3.1 of SBAS675C). Calibrated offset error is reduced to ±2 LSB max over temperature, improving absolute accuracy without software correction - critical for medical and industrial calibration-sensitive applications.
Is ADS7041IRUGR compatible with 1.8-V microcontrollers?
Yes, ADS7041IRUGR supports DVDD from 1.65 V to 3.6 V and complies with JESD8-7A for digital I/O at 1.65 V–1.95 V. When DVDD = 1.8 V, VIH = 1.17 V min and VIL = 0.63 V max - ensuring reliable logic-level compatibility with standard 1.8-V GPIOs without level shifters.
ADS7041IRUGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-XFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Supply
- Voltage - Supply, Analog:
- 1.65V ~ 3.6V
- Voltage - Supply, Digital:
- 1.65V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 8-X2QFN (1.5x1.5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7041IRUGR FAQ
1.How can I place an order for ADS7041IRUGR through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7041IRUGR 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 ADS7041IRUGR reliable?
The price and inventory of ADS7041IRUGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7041IRUGR is usually 5 days.
3.What payment methods are accepted for ADS7041IRUGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7041IRUGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7041IRUGR?
ADS7041IRUGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7041IRUGR 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 ADS7041IRUGR?
For technical support, including ADS7041IRUGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7041IRUGR requirements.
6.How does Aetrix verify that ADS7041IRUGR is sourced from the original manufacturer or authorized distributors?
All ADS7041IRUGR 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 ADS7041IRUGR meets industry standards.
7.What is the process for return or replacement of ADS7041IRUGR?
All ADS7041IRUGR units undergo pre-shipment inspection (PSI). If there is an issue with ADS7041IRUGR, 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 ADS7041IRUGR part is unused and in its original packaging.
Return procedure for ADS7041IRUGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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