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Analog Devices Inc./Maxim Integrated MAX1236EUA+T
- Part No.:
- MAX1236EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1236EUA+T.pdf
- Description:
- IC ADC 12BIT SAR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,882
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Product details
Overview
The MAX1236EUA+T from Maxim Integrated is a low-power, 12-bit, 4-channel analog-to-digital converter (ADC) with integrated track/hold, 4.096V internal reference, I²C-compatible 2-wire serial interface, and operation from 4.5V to 5.5V supply. It delivers 94.4ksps throughput, ±1 LSB INL, and consumes only 670µA at full rate-designed for precision sensing in battery-constrained industrial monitoring systems.
For engineers reviewing the MAX1236EUA+T datasheet, MAX1236EUA+T pinout, MAX1236EUA+T application, or MAX1236EUA+T equivalent, this page provides verified electrical parameters, validated pin functions, confirmed operating modes (unipolar single-ended/differential), real-world use cases, and two technically documented alternative parts for design flexibility.
Technical Context
The MAX1236EUA+T employs successive-approximation architecture with fully differential track-and-hold circuitry and an internal 2.8MHz clock. Its analog input multiplexer supports software-configurable unipolar/bipolar and single-ended/differential modes across four channels (AIN0–AIN3), with acquisition time of 800ns and 5MHz small-signal bandwidth.
It implements AutoShutdown™ to reduce supply current to <0.5µA in power-down mode and supports both Fast Mode (400kHz) and High-Speed Mode (1.7MHz) I²C timing. The device uses a 4.096V internal reference (±2.0% over temperature) and accepts external references from 1V to VDD, with PSRR of ±0.5 LSB/V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for high-fidelity signal digitization |
| INL / DNL | ±1 LSB - ensures monotonicity and ≤0.024% full-scale linearity error across temperature |
| Throughput Rate | 94.4 ksps - enables real-time sampling of signals up to ~3 MHz (Nyquist-limited) |
| Supply Current | 670 µA at 94.4 ksps - allows continuous high-speed operation on 5V rails with minimal thermal load |
| Reference Voltage | 4.096 V internal - provides exact 1 mV/LSB scaling for simplified system calibration |
| Operating Supply | 4.5 V to 5.5 V - compatible with standard 5V logic and industrial power rails |
| SINAD / SFDR | 70 dB / 78 dB - supports accurate measurement of low-amplitude signals amid noise or harmonics |
Pinout & Package
The MAX1236EUA+T is housed in an 8-pin µMAX® package (2.1mm × 2.1mm, 0.5mm pitch), optimized for space-constrained PCB layouts in portable instrumentation and sensor nodes.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | AIN0–AIN2 | Analog input channels 0–2; support single-ended or differential configurations via setup register |
| 4 | AIN3/REF | Configurable as analog input channel 3 or reference voltage source/sink (4.096V) |
| 5 | SCL | I²C clock input; supports Fast Mode (400kHz) and High-Speed Mode (1.7MHz) |
| 6 | SDA | I²C bidirectional data line; open-drain, requires external pull-up |
| 7 | GND | Analog and digital ground reference; must be connected to low-impedance system ground plane |
| 8 | VDD | Positive supply input (4.5V–5.5V); bypass with 0.1µF ceramic capacitor near pin |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ | Reduces supply current to <0.5µA between conversions-critical for intermittent-sampling battery systems |
| Internal 4.096V Reference | Eliminates external reference component count and layout area while maintaining ±2.0% accuracy over -40°C to +85°C |
| Software-Configurable Input Modes | Single-ended (0–VREF) or fully differential (±VREF/2), unipolar or bipolar-enables reuse across diverse sensor types |
| I²C High-Speed Mode | 1.7MHz clock support enables 94.4ksps throughput without requiring custom serial protocols or FPGA logic |
| Low Source Impedance Tolerance | Accurate sampling with analog sources up to 1.5kΩ-reduces need for buffer amplifiers in cost-sensitive designs |
Applications
| Industrial Sensor Node | Portable Data Logger |
|---|---|
|
Use Scenario: Continuous monitoring of 4-channel thermocouple, RTD, or pressure transducer outputs in remote field enclosures powered by 5V solar-battery hybrids. IC Role / Device Role: Primary ADC capturing calibrated analog inputs with internal 4.096V reference and I²C streaming to microcontroller. Use Value: 670µA active current and <0.5µA shutdown enable >1-year battery life at 10s sampling intervals without sacrificing 12-bit resolution. |
Use Scenario: Handheld environmental meter measuring temperature, humidity, and CO₂ using analog-output sensors with varying full-scale ranges. IC Role / Device Role: Configurable 4-channel ADC supporting both unipolar (0–VREF) and bipolar (±VREF/2) inputs per channel via software. Use Value: Single-part flexibility eliminates BOM variants-same MAX1236EUA+T handles 0–5V, ±2.5V, and ratiometric sensor interfaces. |
| Power Supply Monitor | Medical Vital Sign Front-End |
|
Use Scenario: Real-time supervision of 5V rail voltages, auxiliary supplies, and fan tachometer signals in telecom shelf controllers. IC Role / Device Role: System health ADC interfacing directly to 5V domain signals with no level-shifting, leveraging 4.5–5.5V supply compatibility. Use Value: ±1 LSB INL and 70dB SINAD ensure detection of <10mV supply droop or ripple anomalies before system fault thresholds. |
Use Scenario: Low-noise acquisition of ECG lead signals and respiration transducer outputs in Class II portable diagnostic devices. IC Role / Device Role: Precision front-end ADC with 5MHz input bandwidth and differential input capability for common-mode noise rejection. Use Value: Fully differential T/H and 78dB SFDR suppress electrode motion artifacts and 50/60Hz interference without external filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-pin SOIC, 12-bit, SPI interface, 200ksps, 2.7–5.25V supply, no internal reference | Requires external reference and SPI host; higher speed but less integration | Select when SPI is preferred and board space allows SOIC; verify reference stability and layout for 200ksps timing |
| MAX11602EUA+ | 8-pin µMAX, 12-bit, I²C, 94.4ksps, 2.7–3.6V supply, 2.048V internal reference | Lower supply range and reference voltage-requires level-shifting for 5V systems | Use only in 3.3V domains; not drop-in for MAX1236EUA+T due to incompatible VDD and VREF specs |
Compared with ADS7822U and MAX11602EUA+, the MAX1236EUA+T uniquely combines 5V supply operation, integrated 4.096V reference, and µMAX packaging-making it the sole option for compact, self-contained 5V-sensor ADC nodes without external support components.
Availability
MAX1236EUA+T is available at Aetrix Electronics and suitable for industrial sensor nodes, portable data loggers, and power supply monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1236EUA+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX1236–MAX1239 family was designed for low-power, multi-channel data acquisition in space- and energy-constrained systems-emphasizing integration (reference, T/H, clock, I²C), precision (±1 LSB INL), and robustness (-40°C to +85°C).
FAQ
What is the maximum sampling rate supported by the MAX1236EUA+T?
The MAX1236EUA+T supports a maximum throughput rate of 94.4 ksps when operating in I²C High-Speed Mode (1.7 MHz SCL). This requires the bus master to issue the HS-mode master code (0000 1XXX) first, followed by a repeated START and slave address. In Fast Mode (400 kHz), the maximum rate drops to 22.2 ksps. The MAX1236EUA+T achieves this performance with only 670 µA supply current at full rate.
Does the MAX1236EUA+T require an external reference voltage?
No, the MAX1236EUA+T includes a factory-trimmed 4.096 V internal reference with ±2.0% accuracy over temperature, eliminating the need for external reference components. However, it also supports external references from 1 V to VDD-useful when matching system-level reference standards or optimizing for specific full-scale ranges. When using the internal reference, AIN3/REF must be configured accordingly via the setup register.
How many analog input channels does the MAX1236EUA+T provide?
The MAX1236EUA+T provides four analog input channels (AIN0–AIN3), configurable in single-ended mode (four independent 0–VREF inputs) or fully differential mode (two differential pairs: AIN0–AIN1 and AIN2–AIN3). Channel selection is controlled via the CS[3:0] bits in the configuration register, and input polarity (unipolar/bipolar) is set separately in the setup byte.
What package type is used for the MAX1236EUA+T?
The MAX1236EUA+T is packaged in an 8-pin µMAX® package (2.1 mm × 2.1 mm, 0.5 mm pitch), a miniature surface-mount outline with exposed pad for thermal enhancement. This package is pin-compatible with other MAX1236/MAX1237 variants and supports reflow soldering per JEDEC J-STD-020. The µMAX footprint reduces PCB area by ~60% versus standard SOIC-8.
Can the MAX1236EUA+T operate from a 3.3V supply?
No-the MAX1236EUA+T is specified only for 4.5 V to 5.5 V single-supply operation. For 2.7 V to 3.6 V operation, the pin-compatible MAX1237EUA+T (with 2.048 V internal reference) must be used instead. Attempting to power the MAX1236EUA+T below 4.5 V may result in undefined behavior, reference instability, or failure to meet AC/DC specifications.
MAX1236EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 94.4k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-uMAX/uSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1236EUA+T FAQ
1.How can I place an order for MAX1236EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1236EUA+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 MAX1236EUA+T reliable?
The price and inventory of MAX1236EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1236EUA+T is usually 5 days.
3.What payment methods are accepted for MAX1236EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1236EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1236EUA+T?
MAX1236EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1236EUA+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 MAX1236EUA+T?
For technical support, including MAX1236EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1236EUA+T requirements.
6.How does Aetrix verify that MAX1236EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX1236EUA+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 MAX1236EUA+T meets industry standards.
7.What is the process for return or replacement of MAX1236EUA+T?
All MAX1236EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1236EUA+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 MAX1236EUA+T part is unused and in its original packaging.
Return procedure for MAX1236EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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