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Texas Instruments ADC141S626CIMMX/NOPB
- Part No.:
- ADC141S626CIMMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC141S626CIMMX/NOPB.pdf
- Description:
- IC ADC 14BIT SAR 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,907
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Product details
Overview
ADC141S626CIMMX/NOPB from Texas Instruments is a 14-bit, successive-approximation register (SAR) analog-to-digital converter with true differential inputs, 50–250 kSPS sampling rate, ±0.95 LSB INL/DNL, and SPI-compatible serial interface. It operates from independent 2.7V–5.5V analog (VA) and digital (VIO) supplies, supports external reference (1.0V to VA), and delivers 82 dBc SNR at 200 kSPS/3V for precision sensor digitization in battery-powered instrumentation.
For engineers reviewing the ADC141S626CIMMX/NOPB datasheet, ADC141S626CIMMX/NOPB pinout, ADC141S626CIMMX/NOPB application, or ADC141S626CIMMX/NOPB equivalent, key selection criteria include guaranteed 14-bit no-missing-code performance across −40°C to +85°C, zero-power track mode (4 µW at 3V), differential input common-mode rejection up to 76 dB, and VSSOP-10 package compatibility with bridge sensor front-ends.
Technical Context
The ADC141S626CIMMX/NOPB implements a capacitive redistribution SAR architecture with integrated sample-and-hold, preserving differential signal integrity from input pins through conversion. Its internal switch matrix connects +IN/−IN/VREF to a CDAC array during acquisition, enabling precise differential measurement while rejecting common-mode noise.
Operation relies on an external reference (1.0V–VA) defining full-scale range, with LSB size scaling as (2×VREF)/16384. Conversion timing is strictly SCLK-driven: 18 cycles per conversion, no pipeline latency, and real-time DOUT output of the ongoing result-enabling deterministic timing in closed-loop control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with guaranteed no missing codes-ensures monotonic transfer function for accurate position or pressure feedback. |
| Sampling Rate | 50–250 kSPS-supports dynamic signals up to ~22 MHz full-power bandwidth with 3V supply. |
| INL / DNL | ±0.95 LSB max-limits integral and differential nonlinearity errors to <0.006% FS, critical for calibration-critical medical instruments. |
| SNR | 82 dBc min at 200 kSPS/3V-translates to ~13.3 effective bits for high-fidelity sensor data acquisition. |
| Power Consumption | 2.0 mW at 200 kSPS/3V; drops to 4 µW in power-down mode-enables multi-year operation in portable systems. |
| Reference Range | VREF = 1.0V to VA-allows flexible scaling from low-voltage microcontrollers (3V) to industrial rails (5V). |
| Common-Mode Rejection | 76 dB-rejects shared noise in motor control or automotive navigation transducer interfaces. |
Pinout & Package
The ADC141S626CIMMX/NOPB is housed in a 10-lead VSSOP package (3.0 mm × 3.0 mm, 0.5 mm pitch), optimized for space-constrained PCB layouts in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Voltage reference input | Accepts 1.0V–VA reference; requires ≥0.1 µF ceramic + 1–10 µF bulk decoupling for stable full-scale definition. |
| +IN | Non-inverting analog input | Differential positive input; forms (+IN) − (−IN) digitized value-ideal for Wheatstone bridge outputs. |
| −IN | Inverting analog input | Differential negative input; maintains signal integrity through internal CDAC sampling network. |
| GND (Pins 4, 5) | Analog/digital ground reference | Two dedicated GND pins minimize ground bounce between analog and digital sections. |
| CS | Chip select (active-low) | Falling edge initiates conversion; HIGH enables zero-power track mode (4 µW typical). |
| DOUT | Serial data output | 2 null bits + 14 MSB-first binary 2's complement data; valid on rising SCLK edge after falling edge. |
| SCLK | Serial clock input | Drives conversion timing and data transfer; 0.9–4.5 MHz range defines sample rate (fSCLK/18). |
| VIO | Digital I/O supply | 2.7V–5.5V independent rail-enables interfacing with 3V microcontrollers while analog section runs at 5V. |
| VA | Analog power supply | 2.7V–5.5V rail; decoupled separately from VIO to preserve SNR and reduce PSRR-induced offset drift. |
Key Features
| Feature | Design Value |
|---|---|
| True differential input architecture | Maintains signal integrity from +IN/−IN through internal CDAC, delivering 76 dB CMRR without external instrumentation amplifiers. |
| Zero-power track mode | Reduces current to 4 µW (3V) or 13 µW (5V) when CS is HIGH-enables ultra-low-power wake-on-event sensing. |
| Independent VA and VIO supplies | Allows analog section optimization at 5V (max SNR) while digital interface operates at 3V (microcontroller compatibility). |
| SPI/QSPI/MICROWIRE/DSP compatibility | Uses standard 3-wire serial protocol with no latency-simplifies firmware integration and eliminates FIFO management overhead. |
| Wide input common-mode voltage range | Supports VCM from 0 to VA-enables direct connection to transducers with floating or biased outputs. |
Applications
| Automotive Navigation | Portable Systems |
|---|---|
Use Scenario: Digitizing gyro and accelerometer outputs in inertial measurement units (IMUs) for dead-reckoning navigation. IC Role / Device Role / Timing Role: Precision 14-bit SAR ADC capturing differential bridge signals with minimal latency and no missing codes. Use Value: 82 dBc SNR and 76 dB CMRR suppress engine vibration noise, enabling sub-degree heading accuracy in GPS-denied environments. | Use Scenario: Battery-powered handheld multimeters measuring AC/DC voltage, current, and resistance. IC Role / Device Role / Timing Role: Low-power, high-linearity ADC interfacing with precision op-amp front-ends and 3V microcontrollers. Use Value: 2.0 mW consumption at 200 kSPS extends battery life; zero-power track mode enables instant wake-up from sleep states. |
| Medical Instruments | Motor Control |
Use Scenario: ECG lead signal conditioning in portable patient monitors requiring diagnostic-grade waveform fidelity. IC Role / Device Role / Timing Role: Differential-input ADC rejecting 50/60 Hz mains interference while resolving microvolt-level cardiac potentials. Use Value: ±0.95 LSB INL ensures accurate ST-segment analysis; wide VREF range allows gain flexibility across electrode configurations. | Use Scenario: Current sensing in BLDC motor drives using shunt resistors or isolated current transformers. IC Role / Device Role / Timing Role: High-speed, low-latency ADC feeding real-time field-oriented control (FOC) algorithms. Use Value: No pipeline delay enables immediate torque loop response; 250 kSPS sampling captures transient overcurrent events before protection triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit resolution, 1 MSPS max, SPI interface, same VSSOP-10 package; higher power (3.5 mW at 100 kSPS). | Better resolution for high-precision lab equipment; less suitable for ultra-low-power portable use. | Select ADS8860IDRCT when ENOB >13.3 bits is required and power budget allows +75% increase. |
| AD7920BRMZ-REEL | 12-bit resolution, 250 kSPS, pseudo-differential input (single-ended IN+ referenced to IN−), MSOP-8 package. | Limited common-mode rejection; requires external circuitry for true differential signals. | Choose AD7920BRMZ-REEL only for cost-sensitive, single-ended sensor interfaces where 12-bit linearity suffices. |
Compared with ADS8860IDRCT and AD7920BRMZ-REEL, the ADC141S626CIMMX/NOPB uniquely balances 14-bit no-missing-code performance, true differential input, and sub-µW power-down-making it optimal for battery-operated bridge-sensor systems demanding both precision and longevity.
Availability
ADC141S626CIMMX/NOPB is available at Aetrix Electronics and suitable for automotive navigation, portable instrumentation, medical diagnostics, and motor control applications requiring stable component supply and long-term manufacturability.
Supply support for ADC141S626CIMMX/NOPB 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, embedded processing, and connectivity technologies, with decades of expertise in precision data converters.
The ADC141S626CIMMX/NOPB belongs to TI's precision SAR ADC product line, designed specifically for low-power, high-accuracy sensor interface applications in portable, industrial, and automotive systems.
FAQ
What is the maximum clock frequency supported by ADC141S626CIMMX/NOPB?
The ADC141S626CIMMX/NOPB supports a maximum SCLK frequency of 4.5 MHz under all operating conditions, with minimum clock frequency of 0.9 MHz. At 4.5 MHz, the device achieves its rated 250 kSPS sampling rate (fSCLK/18). Exceeding 4.5 MHz violates absolute maximum ratings and may cause conversion errors or latch-up in the ADC141S626CIMMX/NOPB.
Does ADC141S626CIMMX/NOPB require external anti-aliasing filtering?
Yes, ADC141S626CIMMX/NOPB requires an external anti-aliasing filter because it lacks an integrated digital filter. With a 250 kSPS sampling rate, the Nyquist frequency is 125 kHz; unfiltered signals above this frequency will alias into the baseband. A passive RC filter with cutoff near 100 kHz is recommended to preserve SNR and prevent measurement corruption in the ADC141S626CIMMX/NOPB.
Can ADC141S626CIMMX/NOPB operate with VREF = 1.25V and VA = 3.3V?
Yes, ADC141S626CIMMX/NOPB supports VREF = 1.25V when VA = 3.3V, as VREF must be between 1.0V and VA. This configuration yields a 2.5V differential input range (±1.25V) and LSB size of 152.6 µV. Performance remains within datasheet specifications, including ±0.95 LSB INL, provided proper decoupling (0.1 µF ceramic + 4.7 µF bulk) is used on VREF for the ADC141S626CIMMX/NOPB.
What is the purpose of the two GND pins on ADC141S626CIMMX/NOPB?
The ADC141S626CIMMX/NOPB features two dedicated GND pins (Pins 4 and 5) to separate analog and digital return paths, minimizing coupling between high-frequency digital switching noise and sensitive analog sampling circuits. This layout reduces ground bounce and preserves SNR-critical for achieving the specified 82 dBc performance. Both pins must be connected to a low-impedance analog ground plane in the ADC141S626CIMMX/NOPB PCB design.
How does zero-power track mode function in ADC141S626CIMMX/NOPB?
Zero-power track mode in ADC141S626CIMMX/NOPB activates when CS is held HIGH, reducing total supply current to 4 µW (3V) or 13 µW (5V) while the internal sampling capacitor continuously tracks the applied analog input voltage. This enables instantaneous wake-up-conversion begins on the next CS falling edge with no acquisition delay. The mode is ideal for event-triggered sensing in battery-powered ADC141S626CIMMX/NOPB applications.
ADC141S626CIMMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADC141S626CIMMX/NOPB FAQ
1.How can I place an order for ADC141S626CIMMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC141S626CIMMX/NOPB 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 ADC141S626CIMMX/NOPB reliable?
The price and inventory of ADC141S626CIMMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC141S626CIMMX/NOPB is usually 5 days.
3.What payment methods are accepted for ADC141S626CIMMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC141S626CIMMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC141S626CIMMX/NOPB?
ADC141S626CIMMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC141S626CIMMX/NOPB 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 ADC141S626CIMMX/NOPB?
For technical support, including ADC141S626CIMMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC141S626CIMMX/NOPB requirements.
6.How does Aetrix verify that ADC141S626CIMMX/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC141S626CIMMX/NOPB 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 ADC141S626CIMMX/NOPB meets industry standards.
7.What is the process for return or replacement of ADC141S626CIMMX/NOPB?
All ADC141S626CIMMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC141S626CIMMX/NOPB, 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 ADC141S626CIMMX/NOPB part is unused and in its original packaging.
Return procedure for ADC141S626CIMMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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