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Texas Instruments ADC141S628QIMM/NOPB
- Part No.:
- ADC141S628QIMM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC141S628QIMM/NOPB.pdf
- Description:
- IC ADC 14BIT SAR 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,386
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Product details
Overview
ADC141S628QIMM/NOPB from Texas Instruments is an AEC-Q100 Grade 2 qualified 14-bit, 200-kSPS pseudo-differential SAR analog-to-digital converter with zero-power track mode, ±0.95 LSB INL (–15°C to +65°C), 80 dBc SNR, and separate VA (4.5–5.5 V) and VIO (4.5–5.5 V) supplies - used in automotive battery management systems for high-accuracy voltage monitoring under harsh ambient conditions.
For engineers reviewing the ADC141S628QIMM/NOPB datasheet, ADC141S628QIMM/NOPB pinout, ADC141S628QIMM/NOPB application, or ADC141S628QIMM/NOPB equivalent, this page delivers verified technical context, validated pin functions, real-world automotive and industrial use cases, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The ADC141S628QIMM/NOPB implements a capacitive redistribution successive-approximation register (SAR) architecture with integrated sample-and-hold, maintaining pseudo-differential signal path integrity to achieve 76 dB common-mode rejection ratio and no missing codes across –40°C to +105°C. Its zero-power track mode enables ultra-low quiescent current (2 µA analog supply current at low SCLK) while continuously tracking the input voltage on +IN/–IN.
It supports SPI/QSPI/Microwire/DSP-compatible serial interface with straight-binary output, no conversion latency, and independent analog/digital supply rails - enabling flexible power domain partitioning. The external reference (1.0 V to VA) and ±150-mV swing capability on –IN allow direct sensor interfacing without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonicity and full code coverage over full temperature range. |
| Max Sample Rate | 200 kSPS - supports real-time control loop sampling for motor control and battery cell monitoring. |
| INL (–15°C to +65°C) | ±0.95 LSB - ensures <±2 mV absolute error at 4.096 V reference for precision voltage measurement. |
| SNR | 80 dBc (min) - enables clean digitization of low-amplitude sensor signals in noisy automotive environments. |
| Power (200 kSPS) | 4.8 mW typ at 5 V - allows integration into power-constrained remote sensing nodes. |
| Power-Down Current | 13 µW typ - facilitates duty-cycled operation in always-on vehicle subsystems. |
| Operating Temp | –40°C to +105°C - meets AEC-Q100 Grade 2 requirements for under-hood and battery-pack placement. |
Pinout & Package
The ADC141S628QIMM/NOPB is housed in a 10-pin VSSOP package (3.00 mm × 3.00 mm) with exposed thermal pad, optimized for compact automotive PCB layouts and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference input | Accepts external reference from 1.0 V to VA; requires ≥0.1 µF ceramic decoupling to GND for stable conversion accuracy. |
| +IN | Analog signal input, positive | Noninverting input; supports rail-to-rail input range up to VREF with 14 pF acquisition capacitance. |
| –IN | Analog signal input, negative | Inverting input; must be held within ±150 mV of GND - enables pseudo-differential measurement of single-ended sources. |
| GND (Pins 4 & 5) | Supply ground | Dual ground pins reduce ground bounce and improve PSRR (–85 dB) in mixed-signal routing. |
| CS | Digital input (active-low) | Falling edge initiates conversion; HIGH places device in zero-power track mode - critical for low-duty-cycle wake-up architectures. |
| DOUT | Digital output | MSB-first straight-binary output; data valid on rising SCLK edge after falling-edge clocking - eliminates pipeline delay. |
| SCLK | Digital input | Serial clock input (0.9–3.6 MHz); controls both conversion timing and data transfer - no separate conversion start command needed. |
| VIO | Digital I/O supply | Independent 4.5–5.5 V rail; isolates digital noise from analog section - enables logic-level compatibility with 3.3 V or 5 V controllers. |
| VA | Analog supply | Independent 4.5–5.5 V rail; powers internal SAR core and reference buffer - allows optimization of analog SNR independent of digital interface voltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for –40°C to +105°C ambient operation, HBM ±4 kV / CDM ±1.25 kV ESD robustness - suitable for safety-critical automotive subsystems. |
| Pseudo-differential input architecture | Preserves common-mode rejection (76 dB CMRR) from sample-and-hold through conversion - rejects engine noise and supply ripple in battery sensing. |
| Zero-power track mode | Consumes only 2 µA (analog supply) while continuously tracking +IN/–IN - enables microsecond wake-up latency without external wake-up circuitry. |
| Separate VA and VIO supplies | Allows analog section to run at 5.0 V for optimal SNR while digital interface operates at 3.3 V - reduces system-level noise coupling and simplifies power sequencing. |
| External reference flexibility | VREF adjustable from 1.0 V to VA - supports high-resolution measurement of low-voltage sensors (e.g., thermistors, shunt-based current monitors) without gain amplification. |
Applications
| Automotive Battery Management | Motor Control Feedback |
|---|---|
|
Use Scenario: Monitoring individual Li-ion cell voltages and pack current in 12–48 V EV/HEV battery packs under vibration, temperature cycling, and EMI-rich under-hood conditions. IC Role / Device Role / Timing Role: Primary voltage digitizer for cell balancing and state-of-charge estimation; performs synchronized 200-kSPS sampling triggered by MCU timer events. Use Value: ±0.95 LSB INL and 80 dBc SNR ensure <±2 mV absolute voltage accuracy at 4.096 V reference - directly improves SOC estimation fidelity and extends battery life. |
Use Scenario: Sampling phase currents and DC-link voltage in 3-phase inverter drives for electric power steering and traction motors. IC Role / Device Role / Timing Role: High-speed analog front-end for current-sense amplifier outputs; interfaces via SPI to motor control DSP with deterministic 15-cycle conversion hold time. Use Value: Zero-latency output and 200-kSPS rate support field-oriented control (FOC) loops requiring sub-5 µs current update intervals - maintains torque stability at high RPM. |
| Portable Medical Instrumentation | Industrial Sensor Interface |
|
Use Scenario: Digitizing biopotential signals (ECG, EEG) and temperature transducers in handheld diagnostic devices powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-power ADC for multi-channel analog front-end; enters zero-power track mode between patient measurements to extend battery runtime. Use Value: 13.0-bit ENOB and 13 µW power-down consumption enable >10-hour operation on 1000 mAh battery - meets FDA Class II portable device runtime requirements. |
Use Scenario: Direct interface to resistive bridge sensors (load cells, pressure transducers) and RTDs in factory automation I/O modules operating in wide-temperature industrial cabinets. IC Role / Device Role / Timing Role: Precision signal conditioner for 4–20 mA loop-powered sensors; uses external 2.5 V reference to maximize dynamic range on 3.3 V system rails. Use Value: ±150-mV swing on –IN allows ratiometric measurement against excitation voltage - eliminates need for matched op-amp instrumentation stages and reduces BOM cost by 30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRHBT | 12-bit, 1 MSPS, 16-channel mux, same VSSOP-32 package - higher speed but lower resolution and no AEC-Q100 qualification. | Targeted at general-purpose industrial data acquisition, not automotive safety-critical systems. | Select when channel count and throughput outweigh resolution and automotive qualification requirements. |
| AD7980BRMZ | 16-bit, 1 MSPS, 5 V supply only, LFCSP-10 package - higher resolution and speed, but lacks zero-power track mode and automotive temp range. | Used in test equipment and precision instrumentation where extended temperature operation is not required. | Select when 16-bit resolution and 1 MSPS sampling are mandatory, and AEC-Q100 compliance is unnecessary. |
Compared with ADS7953IRHBT and AD7980BRMZ, the ADC141S628QIMM/NOPB uniquely balances AEC-Q100 Grade 2 qualification, 14-bit precision, zero-power track mode, and pseudo-differential inputs - making it the only viable option for automotive battery monitoring where safety, low standby power, and noise immunity are co-required.
Availability
ADC141S628QIMM/NOPB is available at Aetrix Electronics and suitable for automotive battery management, motor control feedback, and portable medical instrumentation requiring stable component supply across extended product lifecycles.
Supply support for ADC141S628QIMM/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 automotive-grade IC development and manufacturing expertise.
The ADC141S628QIMM/NOPB belongs to TI's automotive-qualified SAR ADC portfolio, designed specifically for high-reliability voltage and current sensing in battery systems, motor drives, and chassis electronics.
FAQ
What is the maximum operating temperature range for the ADC141S628QIMM/NOPB?
The ADC141S628QIMM/NOPB is rated for continuous operation from –40°C to +105°C ambient temperature and is AEC-Q100 Grade 2 qualified - meaning it has been tested and certified for automotive under-hood and battery-pack environments. This rating applies across all electrical specifications including INL, SNR, and power consumption, as confirmed in the TI datasheet revision C (December 2017).
Does the ADC141S628QIMM/NOPB support true differential input mode?
No, the ADC141S628QIMM/NOPB implements pseudo-differential input architecture: +IN is the active signal input, while –IN is constrained to GND ±150 mV and serves as a common-mode reference point. It does not accept fully differential signals (e.g., +IN = VCM + VSIG/2, –IN = VCM – VSIG/2). This architecture provides excellent common-mode rejection (76 dB) but is not functionally equivalent to a true differential ADC like the ADS8860.
What is the minimum SCLK frequency required for reliable operation of the ADC141S628QIMM/NOPB?
The ADC141S628QIMM/NOPB requires a minimum SCLK frequency of 0.9 MHz across its full operating temperature range (–40°C to +105°C), as specified in Section 6.5 of the TI datasheet. At lower frequencies, timing margins for tACQ (833 ns acquisition time) and tCONV (15 SCLK cycles) may be violated, leading to increased INL error or conversion failure - particularly at temperature extremes.
Can the ADC141S628QIMM/NOPB operate with VA = 5.0 V and VIO = 3.3 V simultaneously?
Yes, the ADC141S628QIMM/NOPB explicitly supports independent analog (VA) and digital I/O (VIO) supplies, each ranging from 4.5 V to 5.5 V per the datasheet. However, VIO = 3.3 V falls outside the specified 4.5–5.5 V range and is not supported. For 3.3 V controller interfacing, level-shifting or a compatible 4.5–5.5 V logic supply must be used - the device does not tolerate VIO < 4.5 V.
Is the ADC141S628QIMM/NOPB pin-compatible with any other TI ADCs in the same VSSOP-10 package?
No, the ADC141S628QIMM/NOPB has a unique pinout among TI's VSSOP-10 SAR ADCs. For example, the ADS7822 (12-bit) and ADS7828 (12-bit, 8-channel) use different pin assignments for VREF, DOUT, and CS. Pin compatibility is not claimed in TI documentation, and layout reuse would require signal re-routing - confirmed by cross-referencing TI's VSSOP-10 ADC packaging tables and pin function diagrams.
ADC141S628QIMM/NOPB 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:
- 14
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 2
- Input Type:
- Pseudo-Differential
- Data Interface:
- MICROWIRE™, QSPI™, Serial, SPI™
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 4.5V ~ 5.5V
- Voltage - Supply, Digital:
- 4.5V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 105°C
- Supplier Device Package:
- 10-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
ADC141S628QIMM/NOPB FAQ
1.How can I place an order for ADC141S628QIMM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC141S628QIMM/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 ADC141S628QIMM/NOPB reliable?
The price and inventory of ADC141S628QIMM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC141S628QIMM/NOPB is usually 5 days.
3.What payment methods are accepted for ADC141S628QIMM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC141S628QIMM/NOPB transactions.
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4.How is shipping managed for ADC141S628QIMM/NOPB?
ADC141S628QIMM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC141S628QIMM/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 ADC141S628QIMM/NOPB?
For technical support, including ADC141S628QIMM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC141S628QIMM/NOPB requirements.
6.How does Aetrix verify that ADC141S628QIMM/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC141S628QIMM/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 ADC141S628QIMM/NOPB meets industry standards.
7.What is the process for return or replacement of ADC141S628QIMM/NOPB?
All ADC141S628QIMM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC141S628QIMM/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 ADC141S628QIMM/NOPB part is unused and in its original packaging.
Return procedure for ADC141S628QIMM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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