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Analog Devices Inc./Maxim Integrated MAX11102AUB/V+
- Part No.:
- MAX11102AUB/V+
- 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/V+.pdf
- Description:
- IC ADC 12BIT SAR 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,681
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Product details
Overview
MAX11102AUB/V+ 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-EP package - designed for high-accuracy, low-power data acquisition in portable medical and battery-operated systems.
For engineers reviewing the MAX11102AUB/V+ datasheet, MAX11102AUB/V+ pinout, MAX11102AUB/V+ application, or MAX11102AUB/V+ 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/V+ implements a fully differential sample-and-hold front-end feeding a 12-bit SAR core, supporting simultaneous sampling of two analog inputs via an internal 2:1 MUX. Its conversion timing is deterministic: 391ns conversion time, 52ns acquisition time, and 4ns aperture delay - enabling precise synchronization in time-critical embedded control loops.
It uses a 3-wire serial interface (CS, SCLK, DOUT) compatible with SPI, QSPI, and MICROWIRE protocols without level-shifting logic. The separate OVDD pin (1.5V–3.6V) allows direct interfacing with 1.8V or 2.5V digital controllers, while REF accepts an external voltage from 1V to VDD + 0.05V for flexible full-scale range setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - supports 4096 discrete output codes for high-fidelity sensor signal digitization. |
| Throughput Rate | 2 Msps - enables real-time capture of signals up to 1 MHz Nyquist bandwidth with no pipeline latency. |
| SNR | 73 dB typical - ensures >11.8 effective number of bits (ENOB) at 500 kHz input frequency. |
| Supply Voltage | 2.2 V to 3.6 V - compatible with single-cell Li-ion and regulated 3.3V rails in portable designs. |
| Power Consumption | 3.7 mW at 2 Msps - achieves 1.85 µW per sample, critical for multi-sensor battery-powered loggers. |
| Reference Input | External REF pin - allows precision ratiometric measurement using stable external references (e.g., MAX6126). |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood and industrial edge sensing applications. |
Pinout & Package
MAX11102AUB/V+ is housed in a 10-pin µMAX-EP (FMAX) package (3mm × 5mm, exposed pad), 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; full-scale range = 0V to VREF or VDD. |
| AIN2 | Analog input channel 2 | Second independent single-ended input; shares same sample-and-hold and SAR core via internal MUX. |
| REF | External reference voltage input | Accepts 1V–(VDD + 0.05V); sets ADC full-scale; requires low-impedance source (< 1 kΩ). |
| AGND | Analog ground | Separate ground return for analog circuitry; must be tied to system AGND with low-inductance path. |
| DGND | Digital ground | Isolated ground for digital I/O; connected to AGND at single point near device. |
| VDD | Analog power supply | 2.2V–3.6V supply for core ADC and sample-and-hold; bypass with 1 µF ceramic capacitor. |
| OVDD | Digital I/O supply | 1.5V–3.6V supply for CS/SCLK/DOUT; enables direct interface to 1.8V/2.5V microcontrollers. |
| CS | Chip select | Active-low enable; falling edge initiates conversion; must remain low for entire serial transaction. |
| SCLK | Serial clock | Up to 32 MHz; 50% duty cycle required; controls data shift timing on DOUT. |
| DOUT | Serial data output | 3-state CMOS output; MSB-first; high-impedance when CS is high or during conversion. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Deterministic 391 ns conversion time enables precise timing-critical control feedback loops. |
| Variable I/O voltage (1.5V–3.6V) | OVDD pin eliminates level-shifters when interfacing with 1.8V FPGA or 2.5V DSP I/O banks. |
| Low power-down current (1.3 µA) | Enables microamp-level sleep modes in always-on sensor nodes with wake-on-event capability. |
| High dynamic performance (73 dB SNR) | Supports accurate measurement of low-amplitude physiological signals (e.g., ECG, EEG) without amplification noise penalty. |
| −40°C to +125°C operation | Validated performance across full automotive and industrial temperature range without derating. |
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 two sensor outputs simultaneously with synchronized sampling. Use Value: 2 Msps throughput and 73 dB SNR allow oversampling and digital filtering to achieve >14-bit effective resolution without external op-amps. |
Use Scenario: Handheld ECG monitor acquiring lead-I and lead-II signals at 1 kSPS with high common-mode rejection. IC Role / Device Role / Timing Role: Precision 12-bit dual-input ADC with external REF for ratiometric electrode voltage measurement. Use Value: Channel-to-channel offset matching ≤0.4 LSB ensures accurate differential waveform reconstruction without calibration. |
| Battery-Operated Systems | Automotive Systems |
Use Scenario: Wireless IoT node powered by coin cell, transmitting vibration and temperature telemetry every 5 seconds. IC Role / Device Role / Timing Role: Low-power ADC with 1.3 µA power-down current minimizes quiescent drain between measurements. Use Value: 3.7 mW active power at 2 Msps enables >10,000 conversions per milliamp-hour of CR2032 capacity. |
Use Scenario: Engine control unit monitoring dual oxygen sensor outputs for closed-loop fuel trim. IC Role / Device Role / Timing Role: AEC-Q100 stress-tested ADC operating reliably at 125°C ambient under hood. Use Value: −40°C to +125°C guaranteed operation eliminates need for thermal derating or heatsinking in ECU modules. |
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 |
|---|---|---|---|
| MAX11102AUB+ | Same die, identical specs, but standard RoHS-compliant marking (+ABBA vs. +ABBR); no functional difference. | Identical use cases; differs only in top-marking code and internal traceability. | Select MAX11102AUB/V+ when full Maxim traceability documentation (V-grade) is required for automotive or medical audits. |
| ADS8860IDRCT | 16-bit, 1 Msps, single-channel SAR ADC; higher resolution but half the speed and no dual-input MUX. | Used where ultra-high resolution outweighs channel count and speed (e.g., precision lab equipment). | Choose ADS8860IDRCT only if 16-bit ENOB is mandatory and dual-channel sampling is not required. |
Compared with MAX11102AUB+, the MAX11102AUB+ offers identical performance with different traceability coding, while the ADS8860IDRCT trades dual-channel 2 Msps operation for 16-bit resolution at 1 Msps - making it unsuitable for time-synchronized multi-sensor acquisition but viable for static high-precision measurement.
Availability
MAX11102AUB/V+ is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-operated systems requiring stable component supply across extended product lifecycles.
Supply support for MAX11102AUB/V+ 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 targets ultra-low-power, high-speed data acquisition in space-constrained portable systems - emphasizing minimal power per sample, wide supply range, and robust serial interface compatibility.
FAQ
What is the maximum serial clock frequency supported by MAX11102AUB/V+?
The MAX11102AUB/V+ supports a maximum SCLK frequency of 32 MHz under specified conditions (50% duty cycle, VOVDD ≥ 2.2 V). This enables full 12-bit readout within 400 ns per conversion cycle, sustaining the rated 2 Msps throughput without timing violation.
Does MAX11102AUB/V+ require an external reference voltage?
Yes, the MAX11102AUB/V+ requires an external reference voltage applied to the REF pin for optimal accuracy. While it can operate with VREF = VDD, using a precision external reference (e.g., MAX6126) improves total unadjusted error to ±1.5 LSB and enables true ratiometric measurement in sensor interfaces.
Can MAX11102AUB/V+ interface directly with a 1.8V microcontroller?
Yes, MAX11102AUB/V+ supports direct 1.8V interface via its dedicated OVDD pin (1.5V–3.6V range). When OVDD = 1.8V, digital inputs (CS, SCLK) recognize 1.35V as VIH and 0.45V as VIL, and DOUT drives valid 1.8V logic levels - eliminating level-shifting components.
What is the power-down current of MAX11102AUB/V+ and how is it activated?
The MAX11102AUB/V+ draws only 1.3 µA in power-down mode, activated by holding CS high for >100 ns after the last SCLK edge. In this state, the internal reference buffer and sample-and-hold are disabled, reducing current to leakage-only levels - ideal for intermittent-sampling sensor nodes.
How does the dual-input MUX in MAX11102AUB/V+ affect sampling timing?
The MAX11102AUB/V+ uses a shared sample-and-hold and SAR core with a 2:1 analog MUX. Channel selection is controlled by the CHSEL pin: when CHSEL = low, AIN1 is sampled; when CHSEL = high, AIN2 is sampled. Both channels share identical acquisition (52 ns) and conversion (391 ns) timing, enabling synchronized dual-channel capture with <1 LSB channel-to-channel gain mismatch.
MAX11102AUB/V+ 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/V+ FAQ
1.How can I place an order for MAX11102AUB/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11102AUB/V+ 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/V+ reliable?
The price and inventory of MAX11102AUB/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11102AUB/V+ is usually 5 days.
3.What payment methods are accepted for MAX11102AUB/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11102AUB/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11102AUB/V+?
MAX11102AUB/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11102AUB/V+ 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/V+?
For technical support, including MAX11102AUB/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11102AUB/V+ requirements.
6.How does Aetrix verify that MAX11102AUB/V+ is sourced from the original manufacturer or authorized distributors?
All MAX11102AUB/V+ 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/V+ meets industry standards.
7.What is the process for return or replacement of MAX11102AUB/V+?
All MAX11102AUB/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX11102AUB/V+, 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/V+ part is unused and in its original packaging.
Return procedure for MAX11102AUB/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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