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Texas Instruments ADC141S628QIMMX/NOPB
- Part No.:
- ADC141S628QIMMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADC141S628QIMMX/NOPB.pdf
- Description:
- IC ADC 14BIT SAR 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,166
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Product details
Overview
ADC141S628QIMMX/NOPB from Texas Instruments is a 14-bit, 200-kSPS pseudo-differential SAR analog-to-digital converter with AEC-Q100 Grade 2 qualification (–40°C to +105°C), zero-power track mode, ±0.95 LSB INL (max), and SPI/QSPI/Microwire-compatible serial interface - used in automotive battery management systems for high-accuracy voltage monitoring under harsh thermal conditions.
For engineers reviewing the ADC141S628QIMMX/NOPB datasheet, ADC141S628QIMMX/NOPB pinout, ADC141S628QIMMX/NOPB application, or ADC141S628QIMMX/NOPB equivalent, key selection considerations include its pseudo-differential input architecture, independent VA/VIO supplies (4.5 V–5.5 V), external reference support (1.0 V–VA), 4.8 mW typical power at 200 kSPS, and automotive-grade ESD robustness (HBM ±4 kV, CDM ±1.25 kV).
Technical Context
The ADC141S628QIMMX/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 CMRR and 80 dBc SNR (min). Its zero-power track mode enables ultra-low quiescent current (2 µA analog supply, 0.1 µA digital supply) while continuously tracking the input voltage.
It supports flexible supply partitioning: VA (analog) and VIO (digital I/O) operate independently across 4.5 V–5.5 V, and VREF accepts 1.0 V–VA - enabling dynamic full-scale optimization. Timing is synchronous to SCLK (0.9 MHz–3.6 MHz), with no conversion latency: DOUT delivers the result of the currently executing conversion on falling SCLK edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonicity and deterministic code mapping across full temperature range. |
| Max Sample Rate | 200 kSPS - supports real-time control loop sampling for motor and battery management applications. |
| INL (max) | ±0.95 LSB at –15°C to +65°C - ensures <±1.2 mV absolute accuracy with 4.096 V reference for precision sensor digitization. |
| Power (200 kSPS) | 4.8 mW typical at 5 V - enables micro-power operation in always-on automotive subsystems. |
| Power-Down Current | 13 µW typical - allows rapid entry/exit from ultra-low-power state without reset or reconfiguration. |
| Common-Mode Rejection | 76 dB - rejects engine noise and supply ripple in noisy automotive environments. |
| Reference Range | 1.0 V to VA - permits full-scale scaling from low-voltage sensors up to rail-to-rail inputs. |
Pinout & Package
ADC141S628QIMMX/NOPB is housed in a 10-pin VSSOP package (3.00 mm × 3.00 mm), optimized for space-constrained automotive PCB layouts and thermally robust mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference input | Accepts external reference (1.0 V–VA); requires ≥0.1 µF ceramic decoupling to GND for stable conversion accuracy. |
| +IN | Analog signal input (positive) | Noninverting input; supports 0 V to VREF range with ±0.15 V headroom relative to GND. |
| –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; both must connect to low-impedance system ground plane. |
| CS | Digital input (active-low) | Falling edge initiates conversion; HIGH places device in zero-power track mode with minimal supply current. |
| DOUT | Digital output | SPI-compatible serial output (MSB-first, 2 null bits + 14 data bits); valid on rising SCLK edge after falling edge. |
| SCLK | Digital input | Master clock controlling data transfer and conversion timing; supports 0.9–3.6 MHz for flexible interface speed selection. |
| VIO | Digital I/O supply | Independent 4.5–5.5 V supply for logic interface - isolates digital noise from analog section. |
| VA | Analog supply | Independent 4.5–5.5 V analog supply; decoupling required to maintain SNR >80 dBc and THD <–97 dBc. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for automotive ambient temperatures (–40°C to +105°C) and ESD robustness (HBM ±4 kV, CDM ±1.25 kV). |
| Pseudo-differential input architecture | Enables accurate single-ended sensing with common-mode noise rejection (76 dB CMRR) without external instrumentation amplifiers. |
| Zero-power track mode | Reduces total supply current to ≤13 µW while maintaining input voltage tracking - ideal for wake-on-event architectures. |
| Independent VA and VIO supplies | Allows analog and digital domains to operate at different voltages (e.g., VA = 5.0 V, VIO = 3.3 V), minimizing cross-domain noise coupling. |
| External reference flexibility | VREF adjustable from 1.0 V to VA supports wide dynamic range - e.g., 1.0 V reference yields 61 µV LSB for high-resolution thermistor readout. |
Applications
| Automotive Battery Management | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring cell voltages and pack current in 12 V–48 V EV/HEV battery packs under engine cranking and load dump conditions. IC Role / Device Role / Timing Role: Pseudo-differential ADC digitizing shunt-based current and individual cell voltage signals with 14-bit resolution and 200 kSPS throughput. Use Value: Enables precise state-of-charge estimation and overvoltage protection with ±0.95 LSB INL and 80 dBc SNR, even at +105°C ambient. |
Use Scenario: Sampling phase currents and DC bus voltage in three-phase inverter drives for field-oriented control (FOC) algorithms. IC Role / Device Role / Timing Role: High-speed SAR ADC providing synchronized current feedback with zero-latency DOUT output aligned to SCLK edges. Use Value: Supports closed-loop current control at >10 kHz bandwidth using 200 kSPS sampling and 15-cycle conversion time (tCONV). |
| Portable Medical Instrumentation | Industrial Sensor Interface |
Use Scenario: Digitizing ECG, pressure, or temperature sensor outputs in handheld diagnostic devices requiring long battery life and clinical-grade accuracy. IC Role / Device Role / Timing Role: Low-power ADC operating in zero-power track mode between measurements, activated only during scheduled acquisition windows. Use Value: Achieves 13.0-bit ENOB and <±0.5 mV post-calibration TUE while consuming only 13 µW in standby - extending battery runtime by >3× vs comparable converters. |
Use Scenario: Interfacing with RTDs, strain gauges, and bridge sensors in factory automation I/O modules exposed to industrial EMI. IC Role / Device Role / Timing Role: Precision ADC rejecting common-mode noise from 50/60 Hz mains and variable-frequency drive harmonics via 76 dB CMRR. Use Value: Delivers stable 14-bit linearity without external filtering or guard traces, reducing BOM cost and PCB area in DIN-rail mounted controllers. |
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 |
|---|---|---|---|
| ADS7953IRSBT | 12-channel, 12-bit SAR ADC; higher channel count but lower resolution (12-bit vs 14-bit) and no AEC-Q100 qualification. | Multi-sensor data acquisition in non-automotive industrial PLCs; lacks automotive temperature and reliability validation. | Select when multi-channel parallel sampling is required and 12-bit resolution suffices; not suitable for AEC-Q100-compliant designs. |
| AD7980BRMZ | 16-bit, 1 MSPS SAR ADC; higher resolution and speed but no zero-power track mode and only commercial temperature grade (–40°C to +85°C). | High-precision test equipment and medical imaging where speed and resolution outweigh automotive qualification needs. | Choose for lab-grade accuracy and throughput; avoid where automotive qualification, ultra-low standby power, or extended temperature operation is mandatory. |
Compared with ADS7953IRSBT and AD7980BRMZ, ADC141S628QIMMX/NOPB uniquely combines AEC-Q100 Grade 2 qualification, 14-bit resolution with no missing codes, zero-power track mode (<13 µW), and pseudo-differential inputs - making it the only option qualified for safety-critical automotive voltage monitoring with minimal power overhead.
Availability
ADC141S628QIMMX/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 temperature and long product lifecycles.
Supply support for ADC141S628QIMMX/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 and embedded processing technologies, with decades of automotive IC design expertise and rigorous AEC-Q100 validation infrastructure.
The ADC141S628-Q1 product line targets high-reliability automotive signal acquisition - specifically engineered for battery monitoring, motor control, and chassis electronics where precision, low power, and extended temperature operation are non-negotiable.
FAQ
What is the operating temperature range of the ADC141S628QIMMX/NOPB?
The ADC141S628QIMMX/NOPB is AEC-Q100 Grade 2 qualified and operates across –40°C to +105°C ambient temperature. All key specifications - including INL (±0.95 LSB max), SNR (80 dBc min), and power consumption (4.8 mW typ at 200 kSPS) - are guaranteed over this full range, making it suitable for under-hood automotive applications.
Does the ADC141S628QIMMX/NOPB support true differential input?
No, the ADC141S628QIMMX/NOPB uses a pseudo-differential input architecture: +IN is the active signal input, while –IN must be held within ±150 mV of GND. This configuration rejects common-mode noise but does not accept fully differential signals like ±VREF. It is optimized for single-ended sensor interfaces with enhanced noise immunity.
How does the zero-power track mode function in the ADC141S628QIMMX/NOPB?
In zero-power track mode (CS = HIGH), the ADC141S628QIMMX/NOPB consumes only 13 µW typical total power while its internal sampling capacitor continuously tracks the applied analog input voltage. Conversion begins immediately upon CS falling edge, eliminating setup delay and enabling rapid wake-up for event-driven sampling in battery-powered systems.
Can the ADC141S628QIMMX/NOPB use separate analog and digital supply voltages?
Yes - ADC141S628QIMMX/NOPB features independent VA (analog supply) and VIO (digital I/O supply), each configurable from 4.5 V to 5.5 V. This separation prevents digital switching noise from degrading analog performance and allows mixed-voltage system integration, such as VA = 5.0 V for precision conversion and VIO = 3.3 V for compatibility with modern microcontrollers.
What serial interface standards is the ADC141S628QIMMX/NOPB compatible with?
The ADC141S628QIMMX/NOPB supports SPI™, QSPI™, Microwire, and many common DSP serial interfaces. Its DOUT output delivers straight-binary data (2 null bits + 14 MSB-first data bits) synchronized to SCLK falling edges, with output valid on subsequent rising edges - ensuring seamless interoperability with standard microcontroller SPI peripherals without protocol translation.
ADC141S628QIMMX/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
ADC141S628QIMMX/NOPB FAQ
1.How can I place an order for ADC141S628QIMMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for ADC141S628QIMMX/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 ADC141S628QIMMX/NOPB reliable?
The price and inventory of ADC141S628QIMMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADC141S628QIMMX/NOPB is usually 5 days.
3.What payment methods are accepted for ADC141S628QIMMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADC141S628QIMMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADC141S628QIMMX/NOPB?
ADC141S628QIMMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADC141S628QIMMX/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 ADC141S628QIMMX/NOPB?
For technical support, including ADC141S628QIMMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADC141S628QIMMX/NOPB requirements.
6.How does Aetrix verify that ADC141S628QIMMX/NOPB is sourced from the original manufacturer or authorized distributors?
All ADC141S628QIMMX/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 ADC141S628QIMMX/NOPB meets industry standards.
7.What is the process for return or replacement of ADC141S628QIMMX/NOPB?
All ADC141S628QIMMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with ADC141S628QIMMX/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 ADC141S628QIMMX/NOPB part is unused and in its original packaging.
Return procedure for ADC141S628QIMMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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