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Analog Devices Inc./Maxim Integrated MAX11102AUB+T
- Part No.:
- MAX11102AUB+T
- 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+T.pdf
- Description:
- IC ADC 12BIT SAR 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
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Product details
Overview
MAX11102AUB+T from Maxim Integrated is a 12-bit, dual-channel, single-ended successive approximation ADC with 2Msps throughput, 73dB SNR, and operation from 2.2V–3.6V supply. It features an external reference input, 3-wire SPI-compatible serial interface, and 10-pin µMAX package - designed for high-accuracy, low-power data acquisition in portable medical and battery-operated systems.
For engineers reviewing the MAX11102AUB+T datasheet, MAX11102AUB+T pinout, MAX11102AUB+T application, or MAX11102AUB+T 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+T implements a high-dynamic-range sample-and-hold circuit paired with a successive approximation register (SAR) core, enabling pipeline-free conversion with no latency. Its dual 1:2 analog multiplexer selects between AIN1 and AIN2, both referenced to either VDD or an external REF voltage.
It supports variable I/O voltage (1.5V–3.6V) on the digital interface side (OVDD), allowing direct connection to 1.8V or 2.5V logic without level shifters. The 3-wire serial interface operates up to 32MHz SCLK and is compatible with SPI, QSPI, and MICROWIRE protocols without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1 LSB = VREF/4096 quantization step for high-precision sensor digitization. |
| Throughput Rate | 2Msps - supports real-time sampling of signals up to 1MHz Nyquist bandwidth with full linear response. |
| SNR | 73dB typical - enables >11.8 effective number of bits (ENOB) at 500kHz input, critical for low-noise medical sensing. |
| Power Consumption | 3.7mW at 2Msps - achieves 1.85µW per sample, ideal for energy-constrained portable devices. |
| Analog Input Range | 0V to VREF - accepts rail-to-rail input when VREF = VDD, or scaled input with external precision reference. |
| Power-Down Current | 1.3µA - reduces system standby power significantly during idle intervals in battery-powered loggers. |
| Aperture Jitter | 15ps - limits sampling uncertainty to <0.02% of period at 1MHz, preserving signal integrity in wideband acquisition. |
Pinout & Package
MAX11102AUB+T is housed in a 10-pin µMAX package (3mm × 5mm, exposed pad), optimized for thermal performance and board space efficiency in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AIN1) | Analog Input Channel 1 | Single-ended input referenced to AGND; selected by CHSEL = low. |
| 2 (AIN2) | Analog Input Channel 2 | Single-ended input referenced to AGND; selected by CHSEL = high. |
| 3 (REF) | External Reference Input | Accepts 1V–(VDD + 0.05V); enables precise scaling independent of supply variation. |
| 4 (AGND) | Analog Ground | Separate ground return for analog section; must be tied to system AGND with low-impedance path. |
| 5 (VDD) | Analog/Digital Core Supply | 2.2V–3.6V main supply powering SAR core, sample-and-hold, and internal logic. |
| 6 (CS) | Chip Select | Active-low enable for serial interface; initiates conversion on falling edge. |
| 7 (SCLK) | Serial Clock Input | Up to 32MHz clock; controls timing of DOUT data output and internal sampling phase. |
| 8 (DOUT) | Serial Data Output | 3-state CMOS output; delivers 12-bit result MSB-first after CS assertion and SCLK edges. |
| 9 (CHSEL) | Channel Select | Logic-level input selecting AIN1 (low) or AIN2 (high); sampled at CS falling edge. |
| 10 (OVDD) | Digital I/O Supply | 1.5V–3.6V supply for CS, SCLK, CHSEL, and DOUT - isolates digital noise from analog core. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | True SAR architecture delivers first valid conversion result within one clock cycle after CS assertion - essential for deterministic control-loop timing. |
| Variable I/O voltage (1.5V–3.6V) | OVDD pin allows direct interfacing with 1.8V FPGA I/O banks or 2.5V microcontroller peripherals without external level translators. |
| External reference input | REF pin accepts precision external references (e.g., MAX6126), enabling stable full-scale accuracy across temperature and supply drift. |
| Low power at 2.5µA/ksps | Enables ultra-low average current in duty-cycled systems - e.g., 1ksps sampling draws only 2.5µA average, extending battery life in remote sensors. |
| −40°C to +125°C operation | Qualified for automotive under-hood and industrial motor-control environments where ambient temperature exceeds commercial grade limits. |
Applications
| Portable Data Logging | Medical Instrumentation |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure over weeks. IC Role / Device Role / Timing Role: Dual-channel ADC digitizes analog outputs from two calibrated sensors simultaneously, synchronized via CHSEL and CS. Use Value: 2Msps rate captures transient events; 73dB SNR ensures sub-0.1% measurement fidelity; 3.7mW power extends 2xAA battery life to >12 months. |
Use Scenario: Handheld ECG monitor acquiring lead-I and lead-II signals with clinical-grade resolution. IC Role / Device Role / Timing Role: Configured as dual-input front-end, converting differential biopotential signals after instrumentation amplifier stage. Use Value: External REF input maintains gain stability across body temperature shifts; 12-bit resolution resolves microvolt-level cardiac waveforms. |
| Battery-Operated Systems | Automotive Systems |
|
Use Scenario: Wireless IoT node in smart agriculture using solar charging and Li-ion backup. IC Role / Device Role / Timing Role: ADC samples soil moisture and light intensity sensors, entering 1.3µA power-down mode between readings. Use Value: Ultra-low quiescent current minimizes dark-current drain; OVDD flexibility simplifies integration with 1.8V BLE SoC. |
Use Scenario: Engine control unit monitoring knock sensor and throttle position feedback in harsh under-hood conditions. IC Role / Device Role / Timing Role: Digitizes high-frequency vibration signals (up to 40MHz full-power bandwidth) and analog potentiometer wiper voltage. Use Value: −40°C to +125°C rating ensures reliability; 15ps aperture jitter preserves time-domain integrity of combustion event detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, serial 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX11103AUB+T | 3Msps throughput, identical 12-bit resolution, same 10-pin µMAX package and pinout. | Requires higher SCLK (48MHz vs. 32MHz); consumes 5.2mW vs. 3.7mW - suited for higher-bandwidth signal capture. | Select when system demands >2Msps sampling without changing PCB layout or firmware interface logic. |
| ADS7953IRHBT | 12-bit, 16-channel, SPI interface, 1Msps max, 32-pin VQFN; includes integrated sequencer and GPIOs. | Larger footprint and higher channel count - targets multi-sensor industrial PLCs rather than compact dual-input systems. | Choose when expanding to >2 analog inputs or requiring hardware-based scan sequencing without MCU overhead. |
Compared with MAX11102AUB+T, MAX11103AUB+T offers higher speed at increased power, while ADS7953IRHBT trades compactness for channel scalability and embedded control - making MAX11102AUB+T optimal for space- and power-constrained dual-input applications.
Availability
MAX11102AUB+T is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-operated systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX11102AUB+T 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and medical applications.
The MAX111xx family delivers low-power, high-speed SAR ADCs with flexible reference and I/O architectures - engineered specifically for portable, battery-sensitive, and thermally challenging embedded data acquisition.
FAQ
What is the maximum sampling rate supported by the MAX11102AUB+T?
The MAX11102AUB+T supports a maximum throughput rate of 2Msps, achieved with a 32MHz serial clock (SCLK) and 50% duty cycle. Its conversion time is 391ns, and acquisition time is 52ns - enabling full 12-bit results every 500ns. This rate is validated across the full −40°C to +125°C operating range and is specified with VDD = 2.2V–3.6V and CDOUT = 10pF.
Does the MAX11102AUB+T require an external reference voltage?
The MAX11102AUB+T supports both internal and external reference configurations. When the REF pin is left unconnected, it defaults to VDD as the reference source. However, for improved accuracy and temperature stability, the device accepts an external reference voltage from 1V to (VDD + 0.05V) applied directly to the REF pin - a capability confirmed in the Electrical Characteristics table and General Description section of the datasheet.
Can the MAX11102AUB+T interface directly with a 1.8V microcontroller?
Yes - the MAX11102AUB+T features a dedicated OVDD pin that accepts 1.5V–3.6V, allowing its digital interface (CS, SCLK, CHSEL, DOUT) to operate at 1.8V logic levels. With OVDD = 1.8V, VIH = 1.35V and VOL = 0.27V meet standard 1.8V CMOS thresholds, enabling direct connection to 1.8V MCUs without level-shifting circuitry.
What is the significance of the "AUB" suffix in MAX11102AUB+T?
The "AUB" suffix denotes the 10-pin µMAX package with exposed pad (EP), as confirmed in the Ordering Information table. "AUB+T" specifies tape-and-reel packaging (T) and RoHS-compliance (+), with top-mark "+ABBA". This package variant provides enhanced thermal dissipation and is distinct from the TDFN ("ATB+") and SOT23 ("ASB+") variants in the same family.
How does the MAX11102AUB+T manage power in low-duty-cycle applications?
The MAX11102AUB+T includes a full power-down mode with leakage-only current of 1.3µA, activated by holding CS high for >100ns. Upon wake-up (CS falling edge), it requires only one conversion cycle to resume operation - eliminating lengthy initialization delays. This behavior is characterized across temperature and supports µA-level average current in systems sampling at kHz or lower rates.
MAX11102AUB+T 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:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX11102AUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11102AUB+T 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+T reliable?
The price and inventory of MAX11102AUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11102AUB+T is usually 5 days.
3.What payment methods are accepted for MAX11102AUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11102AUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11102AUB+T?
MAX11102AUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11102AUB+T 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+T?
For technical support, including MAX11102AUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11102AUB+T requirements.
6.How does Aetrix verify that MAX11102AUB+T is sourced from the original manufacturer or authorized distributors?
All MAX11102AUB+T 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+T meets industry standards.
7.What is the process for return or replacement of MAX11102AUB+T?
All MAX11102AUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11102AUB+T, 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+T part is unused and in its original packaging.
Return procedure for MAX11102AUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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