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Analog Devices Inc./Maxim Integrated MAX11102AUB+
- Part No.:
- MAX11102AUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
MAX11102AUB+.pdf
- Description:
- IC ADC 12BIT SAR 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:219
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Product details
Overview
MAX11102AUB+ from Maxim Integrated is a 12-bit, dual-channel, single-ended successive approximation ADC with 2Msps throughput, 73dB SNR, and operation from 2.2V to 3.6V supply. It features an external reference input, 3-wire SPI-compatible serial interface, and 10-pin µMAX (FMAX-EP) package - designed for high-precision, low-power data acquisition in portable medical and battery-operated systems.
For engineers reviewing the MAX11102AUB+ datasheet, MAX11102AUB+ pinout, MAX11102AUB+ application, or MAX11102AUB+ equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in medical instrumentation and data logging, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The MAX11102AUB+ implements a true successive approximation register (SAR) architecture with no pipeline delay, enabling deterministic conversion timing critical for closed-loop control. Its dual analog inputs are routed through an internal 2:1 MUX to a single ADC core, supporting interleaved or alternating channel sampling at full 2Msps rate.
It integrates a high-dynamic-range sample-and-hold with 40MHz full-power bandwidth and 15ps aperture jitter, while its 3-wire serial interface operates up to 32MHz SCLK and supports direct connection to 1.5V–3.6V digital I/O domains via dedicated VOVDD supply - eliminating level-shifting in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 1 LSB = VREF/4096 quantization step for high-fidelity sensor signal digitization. |
| Sampling Rate | 2 Msps - enables real-time capture of signals up to 1 MHz Nyquist bandwidth without aliasing. |
| SNR | 73 dB (typ) - supports >11.8 effective number of bits (ENOB) for precision measurement applications. |
| Power Consumption | 3.7 mW at 2 Msps - achieves 1.85 µW per sample, ideal for energy-constrained portable designs. |
| Supply Range | 2.2 V to 3.6 V - compatible with single-cell Li-ion and regulated 3.3 V rails without external LDO. |
| Reference Input | External REF pin - allows precise, stable voltage reference independent of VDD for improved accuracy and noise immunity. |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood and industrial harsh-environment deployment. |
Pinout & Package
MAX11102AUB+ is housed in a 10-pin µMAX (FMAX-EP) package - 3mm × 5mm, exposed pad, RoHS-compliant - optimized for thermal performance and board space efficiency in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1 | Analog Input Channel 1 | Single-ended input referenced to AGND; accepts 0V to VREF range with 20pF track capacitance. |
| AIN2 | Analog Input Channel 2 | Second single-ended input sharing same ADC core; enables dual-sensor monitoring with MUX control. |
| REF | External Reference Input | Accepts 1V to (VDD + 0.05V); decoupling required to maintain SNR and reduce reference noise coupling. |
| VDD | Analog Power Supply | 2.2V–3.6V main supply; powers ADC core and sample-and-hold; requires local 1µF ceramic bypass. |
| AGND | Analog Ground | Separate ground return for analog section; must be tied to system GND at single point to minimize noise. |
| OVDD | Digital I/O Supply | 1.5V–3.6V supply for serial interface pins (CS, SCLK, DOUT, CHSEL); enables direct interfacing with low-voltage logic. |
| CS | Chip Select | Active-low enable for serial frame; falling edge initiates conversion and defines acquisition timing window. |
| SCLK | Serial Clock | Up to 32 MHz clock input; controls data transfer timing and determines maximum throughput. |
| DOUT | Serial Data Output | 3-state CMOS output; outputs 12-bit conversion result MSB-first on SCLK falling edge. |
| CHSEL | Channel Select | Controls internal 2:1 MUX to select AIN1 or AIN2; high = AIN2, low = AIN1 (dual-channel mode only). |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture ensures deterministic 391 ns conversion time and immediate data availability - essential for time-critical feedback loops. |
| Variable I/O voltage (1.5V–3.6V) | OVDD pin allows direct SPI interface with 1.8V or 2.5V microcontrollers without level shifters, reducing BOM count and layout complexity. |
| Low power-down current | 1.3 µA typical shutdown current extends battery life in sleep-mode data loggers between acquisition intervals. |
| High dynamic performance | 73 dB SNR and −76 dB THD at 500 kHz input support accurate digitization of small-signal transducers and biomedical waveforms. |
| Robust timing margins | 15 ns data hold time and 4 ns aperture jitter ensure reliable sampling even with marginal PCB trace routing or clock skew. |
Applications
| Portable ECG Monitor | Industrial Sensor Node |
|---|---|
Use Scenario: Continuous 2-channel biopotential acquisition from differential electrode pairs with real-time R-peak detection. IC Role / Device Role / Timing Role: Dual-channel SAR ADC digitizes lead-I and lead-II analog inputs at 2 Msps with synchronized sampling and no latency-induced phase error. Use Value: 73 dB SNR preserves QRS complex fidelity; 1.85 µW/sample enables >7-day battery life on CR2032 in periodic wake-up mode. |
Use Scenario: Simultaneous temperature, pressure, and humidity sensing in a wireless IIoT node with edge preprocessing. IC Role / Device Role / Timing Role: Interfaces with multiple analog sensors via external multiplexer; provides calibrated 12-bit readings to MCU over SPI at 2 Msps burst rate. Use Value: External REF input rejects supply ripple; −40°C to +125°C rating ensures reliability in uncontrolled factory environments. |
| Battery-Powered Data Logger | Automotive Cabin Air Quality Module |
Use Scenario: Low-duty-cycle environmental logging (temperature, light, CO₂) in remote field deployments powered by solar-charged Li-ion. IC Role / Device Role / Timing Role: ADC remains in 1.3 µA power-down state between 10-second sampling intervals; wakes on timer interrupt to acquire two sensor channels. Use Value: 3.7 mW active power minimizes energy draw during acquisition; 10-pin µMAX footprint saves PCB area for compact enclosure design. |
Use Scenario: Real-time monitoring of PM2.5, VOC, and CO levels inside vehicle cabin with automatic HVAC response. IC Role / Device Role / Timing Role: Digitizes analog outputs from electrochemical and NDIR gas sensors; supports fast transient detection via 2 Msps capability. Use Value: 40 MHz full-power bandwidth captures rapid air quality changes; AEC-Q200 qualification path supported by −40°C to +125°C operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRHBT | 12-bit, 1-Msps, 16-channel, SPI interface; requires external reference; 32-pin VQFN package. | Higher channel count but lower speed; suited for multi-sensor systems needing scan flexibility over raw speed. | Select when expanding beyond 2 channels or requiring integrated programmable gain amplifier (PGA) - not for 2 Msps-critical paths. |
| AD7476AARMZ | 12-bit, 1-Msps, single-channel, SPI interface; no external REF pin; 8-pin MSOP package. | Lower integration (single input), no REF pin, reduced feature set; smaller footprint but no dual-input capability. | Choose for cost-sensitive, space-constrained single-sensor applications where 2 Msps and dual-channel operation are unnecessary. |
Compared with ADS7953IRHBT and AD7476AARMZ, the MAX11102AUB+ uniquely delivers 2 Msps dual-channel sampling with external reference support and ultra-low 3.7 mW power in a 10-pin µMAX package - making it optimal for compact, high-speed, precision dual-sensor systems where timing determinism and SNR are critical.
Availability
MAX11102AUB+ is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial sensor nodes, and battery-powered data loggers requiring stable component supply across extended production lifecycles.
Supply support for MAX11102AUB+ 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, medical, and automotive applications.
The MAX111xx family was engineered to deliver high-speed, low-power, precision SAR ADC functionality in miniature packages - targeting portable, battery-constrained systems where accuracy, size, and energy efficiency are co-optimized.
FAQ
What is the maximum serial clock frequency supported by the MAX11102AUB+?
The MAX11102AUB+ supports a maximum serial clock (SCLK) frequency of 32 MHz, enabling full 12-bit data readout within the 2 Msps conversion cycle. This timing aligns with standard SPI peripherals on ARM Cortex-M and other embedded controllers without requiring custom clock dividers or firmware overhead.
Does the MAX11102AUB+ require an external reference voltage?
Yes - the MAX11102AUB+ includes a dedicated REF pin and is designed to operate with an external precision reference (1V to VDD + 0.05V). Using an external reference improves absolute accuracy and reduces sensitivity to VDD ripple, unlike internal reference variants in the same family (e.g., MAX11110).
Can the MAX11102AUB+ interface directly with a 1.8V microcontroller?
Yes - the MAX11102AUB+ features a separate OVDD pin that accepts 1.5V to 3.6V, allowing its CS, SCLK, DOUT, and CHSEL pins to operate natively at 1.8V logic levels. No level-shifting circuitry is needed when interfacing with 1.8V MCUs, simplifying design and reducing component count.
What is the significance of the "AUB+" suffix in MAX11102AUB+?
The "AUB+" suffix denotes the 10-pin µMAX (FMAX-EP) package with exposed pad, RoHS-compliant, and tape-and-reel packaging. It differentiates this variant from the TDFN-packaged MAX11102ATB+ and the automotive-grade MAX11102AUB/V+, confirming industrial temperature range (−40°C to +125°C) and standard reliability screening.
How does the power-down mode function in the MAX11102AUB+?
The MAX11102AUB+ enters ultra-low-power shutdown when CS is held high for more than one SCLK cycle, reducing supply current to 1.3 µA typical. Wake-up is instantaneous - conversion resumes within one clock cycle after CS assertion, making it ideal for duty-cycled sensor acquisition in battery-powered devices.
MAX11102AUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 2M
- Number of Inputs:
- 2
- Input Type:
- 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:
- 2.2V ~ 3.6V
- Voltage - Supply, Digital:
- 2.2V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-uMAX-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX11102AUB+ FAQ
1.How can I place an order for MAX11102AUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11102AUB+ 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 MAX11102AUB+ reliable?
The price and inventory of MAX11102AUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11102AUB+ is usually 5 days.
3.What payment methods are accepted for MAX11102AUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11102AUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11102AUB+?
MAX11102AUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11102AUB+ 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 MAX11102AUB+?
For technical support, including MAX11102AUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11102AUB+ requirements.
6.How does Aetrix verify that MAX11102AUB+ is sourced from the original manufacturer or authorized distributors?
All MAX11102AUB+ 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 MAX11102AUB+ meets industry standards.
7.What is the process for return or replacement of MAX11102AUB+?
All MAX11102AUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11102AUB+, 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 MAX11102AUB+ part is unused and in its original packaging.
Return procedure for MAX11102AUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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