My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX11103AUB+T
- Part No.:
- MAX11103AUB+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:
-
MAX11103AUB+T.pdf
- Description:
- IC ADC 12BIT SAR 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX11103AUB+T from Maxim Integrated is a 12-bit, dual-channel, single-ended successive approximation ADC with 3Msps throughput, 72dB SNR, and operation from 2.2V–3.6V supply. It features external reference input, SPI/QSPI/MICROWIRE-compatible 3-wire serial interface, and 10-pin µMAX (FMAX-EP) package - designed for high-accuracy, low-power portable data acquisition in battery-operated medical and industrial systems.
For engineers reviewing the MAX11103AUB+T datasheet, MAX11103AUB+T pinout, MAX11103AUB+T application, or MAX11103AUB+T equivalent, key selection considerations include its 3Msps sampling rate with no pipeline delay, dual analog input MUX architecture, 1.3µA power-down current, and compatibility with 1.5V–3.6V I/O voltage domains for direct interfacing to mixed-voltage digital systems.
Technical Context
The MAX11103AUB+T implements a successive approximation register (SAR) architecture with integrated sample-and-hold, supporting true 3Msps conversion without latency or pipeline delay. Its dual 1:2 analog multiplexer enables time-interleaved or alternating channel sampling with matched channel-to-channel gain error (±0.05 LSB) and offset error (±0.4 LSB).
It uses a high-speed 3-wire serial interface with CS, SCLK, and DOUT, operating up to 48MHz clock frequency and compatible with SPI, QSPI, and MICROWIRE protocols. The device accepts an external reference (1V to VDD + 0.05V), supports independent OVDD supply (1.5V–3.6V) for digital I/O, and maintains full performance across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12 bits - delivers 1 LSB = VREF/4096 quantization step for high-precision sensor or instrumentation signal digitization. |
| Sampling Rate | 3 Msps - enables real-time capture of signals up to 1.5 MHz Nyquist bandwidth with minimal aliasing risk. |
| SNR | 72 dB typical - supports >11.6 effective number of bits (ENOB) at 1 MHz input, critical for dynamic signal fidelity. |
| Power Consumption | 5.2 mW at 3 Msps - achieves 1.73 µW per sample, optimizing battery life in portable data loggers. |
| Aperture Jitter | 15 ps - limits sampling uncertainty to <0.03 LSB at 1 MHz, preserving SFDR >76 dB. |
| Reference Input | External REF pin (1V to VDD + 0.05V) - allows precision ratiometric or absolute measurement using stable external references. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment monitoring. |
Pinout & Package
MAX11103AUB+T is housed in a 10-pin µMAX (FMAX-EP) package - 3mm × 5mm, exposed pad, RoHS-compliant - optimized for thermal dissipation and board space efficiency in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1 / AIN2 | Analog inputs | Dual single-ended channels routed via internal 2:1 MUX to SAR core; support 0V to VREF input range. |
| REF | Reference voltage input | Accepts external reference (1V to VDD + 0.05V); enables ratiometric accuracy or fixed-scale measurements. |
| VDD | Analog supply | 2.2V–3.6V main supply powering ADC core and sample-and-hold; determines full-scale range when REF is unconnected. |
| OVDD | Digital I/O supply | 1.5V–3.6V independent supply for CS/SCLK/DOUT pins - enables direct interface to 1.8V or 2.5V logic without level shifters. |
| CS | Chip select | Active-low enable for serial interface; falling edge initiates conversion and defines aperture timing. |
| SCLK | Serial clock | Up to 48 MHz clock input; controls data transfer timing and conversion cycle synchronization. |
| DOUT | Serial data output | 3-state CMOS output delivering 12-bit conversion result MSB-first; high-impedance when CS is high. |
| AGND / DGND | Analog/digital ground | Separate ground pins minimize noise coupling between analog sampling and digital switching domains. |
| EP | Exposed thermal pad | Internally connected to AGND; must be soldered to PCB ground plane for thermal stability and EMI reduction. |
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 closed-loop control timing. |
| Dual-channel MUX | Integrated 2:1 analog multiplexer enables synchronized or alternating sampling of two sensors without external switching components. |
| Variable I/O voltage | OVDD pin supports 1.5V–3.6V logic interface - eliminates level-shifter requirements when connecting to FPGA or MCU I/O banks at non-VDD voltages. |
| Ultra-low power-down | 1.3 µA shutdown current - reduces system standby power in intermittent-sampling applications like wireless sensor nodes. |
| High dynamic range | 73 dB SNR and 85 dB SFDR at 1 MHz - preserves signal integrity in noisy industrial environments with wide dynamic input ranges. |
Applications
| Portable Data Logging | Medical Instrumentation |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, pressure, and humidity over multi-day intervals. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing two analog sensor outputs with synchronized sampling and low-latency readout. Use Value: 3Msps throughput and 5.2mW active power enable high-fidelity waveform capture while extending battery life beyond 6 months on a single coin cell. | Use Scenario: Portable ECG monitor acquiring lead-II and lead-III signals for arrhythmia detection. IC Role / Device Role / Timing Role: Precision 12-bit digitizer with external reference for ratiometric electrode voltage measurement and common-mode rejection. Use Value: 72dB SNR and <0.05 LSB channel matching ensure accurate differential waveform reconstruction critical for QT-interval analysis. |
| Battery-Operated Systems | Automotive Systems |
Use Scenario: Smart asset tracker using GPS and inertial sensors, requiring low-quiescent-power signal conditioning. IC Role / Device Role / Timing Role: Low-power ADC managing analog front-end for accelerometer and gyroscope bias calibration. Use Value: 1.3µA power-down mode and fast wake-up (<1 conversion cycle) reduce average system current to sub-µA during sleep intervals. | Use Scenario: Engine control unit auxiliary sensor interface for exhaust gas temperature and intake manifold pressure. IC Role / Device Role / Timing Role: High-temperature-rated ADC performing periodic diagnostics on analog sensor feedback loops. Use Value: Guaranteed operation from –40°C to +125°C and robust 15ps aperture jitter maintain timing accuracy under thermal cycling and EMI stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX11102AUB+ | 2Msps throughput, identical 12-bit resolution, same 10-pin µMAX package and pinout. | Lower sampling rate suits slower sensors (e.g., thermistors, RTDs) where 3Msps is unnecessary. | Select when system clock budget or power constraints favor 2Msps operation without sacrificing resolution or package footprint. |
| ADS8860IDRCT | Texas Instruments 16-bit SAR ADC, 1Msps, 3V supply only, SPI-only interface, no OVDD flexibility. | Higher resolution but lower speed; lacks dual-input MUX and variable I/O voltage support. | Choose when ENOB >13 bits is mandatory and sampling rate ≤1Msps suffices - e.g., precision weigh scales or calibration equipment. |
Compared with MAX11102AUB+, the MAX11103AUB+T delivers 50% higher throughput with identical power efficiency and pin compatibility; versus ADS8860IDRCT, it trades 4-bit resolution for 3× speed, dual-channel capability, and flexible I/O voltage - making it superior for real-time, multi-sensor, battery-constrained embedded systems.
Availability
MAX11103AUB+T is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-operated systems requiring stable component supply, extended temperature operation, and high-speed precision analog-to-digital conversion.
Supply support for MAX11103AUB+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 targets high-speed, low-power data acquisition in space- and energy-constrained systems - emphasizing small footprint, wide temperature range, and seamless digital integration without external support circuitry.
FAQ
What is the maximum serial clock frequency supported by the MAX11103AUB+T?
The MAX11103AUB+T supports a maximum serial clock (SCLK) frequency of 48 MHz, enabling full 12-bit readout within 260 ns conversion time at 3 Msps throughput. This timing is guaranteed across the full –40°C to +125°C operating range and ensures reliable communication with high-speed microcontrollers and FPGAs without added interface overhead. The MAX11103AUB+T maintains this specification with 40–60% duty cycle and 10 pF load capacitance.
Does the MAX11103AUB+T require an external reference voltage?
The MAX11103AUB+T supports both internal and external reference configurations: when REF is left unconnected, it uses VDD as the reference; when an external reference is applied to the REF pin (1V to VDD + 0.05V), the device achieves superior ratiometric accuracy and reduced supply sensitivity. This flexibility makes the MAX11103AUB+T suitable for applications ranging from cost-sensitive consumer devices to high-precision industrial sensors where reference stability is critical.
Can the MAX11103AUB+T interface directly with a 1.8V microcontroller?
Yes - the MAX11103AUB+T features a dedicated OVDD pin that accepts 1.5V–3.6V supply, allowing its CS, SCLK, and DOUT signals to operate natively at 1.8V logic levels. No external level shifters are required when interfacing with 1.8V microcontrollers, reducing BOM count and PCB area. This capability is confirmed in the Electrical Characteristics table under "Digital Input High/Low Voltage" with VIH = 0.75 × OVDD and VIL = 0.25 × OVDD.
What is the channel-to-channel matching performance of the MAX11103AUB+T?
The MAX11103AUB+T specifies channel-to-channel offset matching of ±0.4 LSB and gain matching of ±0.05 LSB over temperature - measured between AIN1 and AIN2 inputs sharing the same ADC core via internal 2:1 MUX. This tight matching enables accurate differential or ratio-based measurements (e.g., bridge sensor excitation and response) without software calibration, directly supporting applications like load cell interfaces and multi-element transducer arrays.
How does the power consumption of the MAX11103AUB+T scale with sampling rate?
The MAX11103AUB+T exhibits near-linear power scaling: 5.2 mW at 3 Msps (1.73 µW/sample), 3.7 mW at 2 Msps (1.85 µW/sample), and only 1.98 mW with no clock (full-power mode, static). Its 1.3 µA power-down current further enables ultra-low average power in burst-sampling applications. These values are measured at VDD = 3.0V, TA = +25°C, and include both analog and digital supply currents (IVDD + IOVDD), as specified in the Electrical Characteristics tables.
MAX11103AUB+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):
- 3M
- 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:
- -
MAX11103AUB+T FAQ
1.How can I place an order for MAX11103AUB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX11103AUB+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 MAX11103AUB+T reliable?
The price and inventory of MAX11103AUB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX11103AUB+T is usually 5 days.
3.What payment methods are accepted for MAX11103AUB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX11103AUB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX11103AUB+T?
MAX11103AUB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX11103AUB+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 MAX11103AUB+T?
For technical support, including MAX11103AUB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX11103AUB+T requirements.
6.How does Aetrix verify that MAX11103AUB+T is sourced from the original manufacturer or authorized distributors?
All MAX11103AUB+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 MAX11103AUB+T meets industry standards.
7.What is the process for return or replacement of MAX11103AUB+T?
All MAX11103AUB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX11103AUB+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 MAX11103AUB+T part is unused and in its original packaging.
Return procedure for MAX11103AUB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX11103AUB+T Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
