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Analog Devices Inc./Maxim Integrated MAX11124ATI+
- Part No.:
- MAX11124ATI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX11124ATI+.pdf
- Description:
- IC ADC 10BIT SAR 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,706
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Product details
Overview
MAX11124ATI+ from Analog Devices is a 10-bit, 8-channel, 1Msps SAR analog-to-digital converter with external reference support, 1.5MHz full-linear bandwidth, and integrated SampleSet™ channel sequencing. It operates from 2.35V–3.6V supply, consumes 5.4mW at 1Msps, and targets high-speed data acquisition in battery-powered industrial sensors and portable medical instrumentation.
For engineers reviewing the MAX11124ATI+ datasheet, MAX11124ATI+ pinout, MAX11124ATI+ application, or MAX11124ATI+ equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, and two confirmed alternative parts for multichannel low-power ADC selection.
Technical Context
The MAX11124ATI+ implements a successive-approximation register (SAR) architecture with dual clock modes: internal clock (enabling FIFO buffering and on-chip averaging) and external clock (supporting SampleSet™ programmable channel sequencing). Its analog front-end supports single-ended, pseudo-differential, and fully differential input configurations across all 8 channels.
It features a 16MHz 3-wire SPI-compatible serial interface with EOC signaling, AutoShutdown™ for sub-µA standby current, and flexible reference handling-accepting external differential references from 1V to VDD. The device guarantees ±0.4 LSB INL and ±0.4 LSB DNL over –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes for medium-precision sensor digitization without oversampling overhead |
| Sampling Rate | 1Msps - enables real-time capture of signals up to 500kHz Nyquist frequency in closed-loop control systems |
| Full-Linear Bandwidth | 1.5MHz - maintains SINAD >61dB across full input range, critical for accurate wideband signal reconstruction |
| Power Dissipation | 5.4mW at 1Msps (3V) - supports >10-hour runtime on coin-cell batteries in portable diagnostic devices |
| INL / DNL | ±0.4 LSB / ±0.4 LSB - ensures monotonicity and <0.1% gain/offset error in precision measurement applications |
| Reference Input Range | 1V to VDD - allows direct use of system rail as reference or integration with precision external references |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive sensing and industrial motor control environments |
Pinout & Package
MAX11124ATI+ is housed in a 28-pin, 5mm × 5mm TQFN-EP package with exposed pad (Package Code T2855+3), optimized for thermal performance (θJA = 29°C/W) and PCB space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN0–AIN7 | Analog Input Channels | 8 configurable inputs supporting single-ended, pseudo-differential, or fully differential acquisition relative to REF–/AIN15 |
| REF+/REF–/AIN15 | External Reference Inputs | REF+ accepts 1V–VDD reference; REF–/AIN15 serves as negative reference or 15th analog input in 16-channel variants (not used in MAX11124ATI+) |
| CS, SCLK, DIN, DOUT | 3-Wire SPI Interface | Direct connection to microcontroller SPI peripherals at up to 16MHz-no level shifters needed for 1.8V/2.5V/3.3V I/O domains |
| EOC | End-of-Conversion Flag | Active-low pulse indicates valid conversion result ready for readout; only functional in internal clock mode |
| VDD, OVDD, DGND, GND | Power & Ground Rails | VDD (2.35–3.6V analog supply); OVDD (1.5–3.6V digital I/O supply); separate DGND and GND pins minimize digital noise coupling into analog path |
| EP | Exposed Thermal Pad | Must be soldered to PCB ground plane to achieve specified θJA = 29°C/W and ensure stable operation at full speed |
Key Features
| Feature | Design Value |
|---|---|
| SampleSet™ Channel Sequencing | User-programmable 256-step sequence reduces MCU polling overhead and enables mixed-rate sampling (e.g., slow temp + fast vibration channels) |
| Internal FIFO (16-entry) | Buffers conversions during high-speed acquisition, allowing asynchronous readout at lower clock rates-eliminates timing-critical interrupt servicing |
| Flexible Input Configuration | All 8 channels support single-ended, pseudo-differential (vs. common AIN15), or fully differential modes-maximizes reuse across diverse sensor types |
| AutoShutdown™ Mode | Reduces supply current to 2µA during idle periods-extends battery life in intermittent-sampling applications like wireless sensor nodes |
| Bipolar Input Ranges | Software-selectable ±VREF+/2 or ±VREF+ ranges simplify AC-coupled signal conditioning without external op-amp level-shifting circuitry |
Applications
| Industrial Motor Monitoring | Portable ECG Front-End |
|---|---|
Use Scenario: Real-time acquisition of current, voltage, and temperature signals from 3-phase inverters in predictive maintenance gateways. IC Role / Device Role / Timing Role: 10-bit SAR ADC digitizing 8 analog sensor outputs with synchronized sampling and low-latency SPI readout. Use Value: 1.5MHz linear bandwidth preserves harmonic content for FFT-based fault detection; 5.4mW power enables fanless enclosure design. |
Use Scenario: Battery-powered handheld ECG device acquiring lead-II, III, aVR, aVL, aVF, and chest leads with baseline stability. IC Role / Device Role / Timing Role: Precision 10-bit ADC with pseudo-differential inputs referenced to common electrode (AIN15), supporting bipolar ±1.25V range. Use Value: ±0.4 LSB INL ensures clinical-grade amplitude accuracy; AutoShutdown extends 7-day battery life between charges. |
| Automotive Cabin Air Quality Sensor | Smart Factory Vibration Analyzer |
Use Scenario: Compact CO₂, VOC, and humidity sensor node mounted behind dashboard with strict thermal and size constraints. IC Role / Device Role / Timing Role: Low-power ADC interfacing MEMS gas sensors and thermistors using single-ended configuration and internal averaging. Use Value: 2.35V minimum supply enables direct Li-ion battery operation; –40°C to +125°C rating covers full automotive ambient range. |
Use Scenario: Wireless vibration monitor attached to rotating machinery, sampling accelerometer outputs at 1ksps with FFT analysis onboard. IC Role / Device Role / Timing Role: 8-channel ADC capturing triaxial accelerometers plus temperature, enabling time-domain waveform capture before edge FFT processing. Use Value: SampleSet™ sequences 4x accelerometer axes + temp + reference channel without MCU intervention-reducing host processor load by 65%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit, multichannel, low-power SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8684IPWR | 16-bit resolution, 500ksps, SPI interface, integrated reference; requires higher supply current (12mW) | Better DC precision for calibration-critical test equipment; not suitable for ultra-low-power portable use | Select when absolute accuracy >12-bit and integrated reference outweigh power budget constraints |
| AD7904BRUZ | 12-bit, 4-channel, 1Msps, no FIFO or SampleSet; 2.7–5.25V supply; ±1 LSB INL | Simpler control interface but lacks channel sequencing and buffer-requires tighter MCU timing coordination | Choose for cost-sensitive, fixed-sequence 4-channel systems where firmware overhead is manageable |
Compared with ADS8684IPWR and AD7904BRUZ, the MAX11124ATI+ uniquely balances 10-bit precision, 8-channel flexibility, on-chip sequencing, and sub-6mW power-making it optimal for battery-operated multichannel acquisition where MCU offload and thermal footprint matter.
Availability
MAX11124ATI+ is available at Aetrix Electronics and suitable for industrial motor monitoring, portable ECG front-ends, and automotive cabin air quality sensors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MAX11124ATI+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX11120–MAX11128 family was designed specifically for low-power, high-channel-count data acquisition in space- and energy-constrained systems-emphasizing intelligent on-chip sequencing, flexible input routing, and robust operation from –40°C to +125°C.
FAQ
What is the maximum sample rate supported by the MAX11124ATI+?
The MAX11124ATI+ supports a maximum conversion rate of 1 million samples per second (1Msps) in both internal and external clock modes. At this rate, the device achieves 5.9µs conversion time with internal clocking and 1000ns with 16MHz external SCLK-enabling real-time capture of signals up to 500kHz while maintaining guaranteed 10-bit linearity.
Does the MAX11124ATI+ include an internal reference voltage source?
No, the MAX11124ATI+ requires an external reference. It accepts a differential reference input (REF+ and REF–) with REF+ ranging from 1V to VDD and REF– from –0.3V to +1V. This architecture allows designers to select precision external references or use system rails-providing flexibility unattainable with fixed internal references.
How many analog input channels does the MAX11124ATI+ support, and what configurations are available?
The MAX11124ATI+ provides 8 analog input channels (AIN0–AIN7). Each channel can be configured as single-ended, pseudo-differential (relative to common AIN15), or fully differential-enabling mixed-mode acquisition within one device. The pinout confirms dedicated AIN0–AIN7 pins and shared REF–/AIN15 functionality inherited from the 16-channel family variant.
What is the purpose of the SampleSet™ feature in the MAX11124ATI+?
SampleSet™ is a user-programmable channel sequencer that allows loading custom 256-step acquisition patterns into the MAX11124ATI+. This eliminates continuous MCU polling, reduces interface traffic, and enables deterministic mixed-rate sampling-e.g., acquiring temperature every 100ms while capturing vibration at 10ksps-all autonomously within the ADC.
Is the MAX11124ATI+ compatible with standard SPI interfaces?
Yes, the MAX11124ATI+ uses a 3-wire SPI-compatible serial interface (CS, SCLK, DIN/DOUT) operating up to 16MHz. It directly connects to SPI, QSPI™, and MICROWIRE® controllers without external logic. Level compatibility spans 1.5V–3.6V OVDD, supporting seamless integration with 1.8V, 2.5V, and 3.3V microcontrollers.
MAX11124ATI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.35V ~ 3.6V
- Voltage - Supply, Digital:
- 2.35V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 28-TQFN (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11124ATI+ FAQ
1.How can I place an order for MAX11124ATI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11124ATI+ 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 MAX11124ATI+ reliable?
The price and inventory of MAX11124ATI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11124ATI+ is usually 5 days.
3.What payment methods are accepted for MAX11124ATI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11124ATI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11124ATI+?
MAX11124ATI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11124ATI+ 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 MAX11124ATI+?
For technical support, including MAX11124ATI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11124ATI+ requirements.
6.How does Aetrix verify that MAX11124ATI+ is sourced from the original manufacturer or authorized distributors?
All MAX11124ATI+ 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 MAX11124ATI+ meets industry standards.
7.What is the process for return or replacement of MAX11124ATI+?
All MAX11124ATI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11124ATI+, 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 MAX11124ATI+ part is unused and in its original packaging.
Return procedure for MAX11124ATI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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