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Analog Devices Inc./Maxim Integrated MAX1136EUA+
- Part No.:
- MAX1136EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1136EUA+.pdf
- Description:
- IC ADC 10BIT SAR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,511
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Product details
Overview
MAX1136EUA+ from Maxim Integrated is a low-power, 4-channel, 10-bit 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 single supply. It delivers 94.4ksps throughput at 670µA, supports unipolar/bipolar and single-ended/differential input configurations, and targets battery-powered test equipment and portable medical instruments.
For engineers reviewing the MAX1136EUA+ datasheet, MAX1136EUA+ pinout, MAX1136EUA+ application, or MAX1136EUA+ equivalent, key selection criteria include its 8-pin µMAX package, guaranteed -40°C to +85°C operation, software-configurable analog input modes, internal reference accuracy (±1 LSB INL), and I²C high-speed mode support up to 1.7MHz.
Technical Context
The MAX1136EUA+ employs successive-approximation architecture with fully differential track/hold circuitry and an internal 2.8MHz clock. Its analog front-end supports four single-ended or two fully differential inputs, configurable via software-controlled setup and configuration registers over I²C.
It features AutoShutdown™ enabling sub-1µA quiescent current at low throughput, internal FIFO with channel-scan mode, and programmable acquisition timing tied to I²C clock edges-ensuring precise sampling synchronization in resource-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete digital codes for precision measurement of analog sensor or signal sources. |
| Sampling Rate | 94.4ksps max - enables real-time capture of signals up to ~3MHz full-power bandwidth (SINAD > 57dB). |
| Supply Voltage | 4.5V to 5.5V - compatible with standard 5V logic and industrial power rails without level-shifting. |
| Internal Reference | 4.096V ±1% - provides stable, factory-trimmed scaling for consistent ADC full-scale range across temperature. |
| INL / DNL | ±1 LSB - ensures monotonicity and <0.1% end-point linearity error critical for closed-loop control feedback. |
| I²C Interface | Up to 1.7MHz high-speed mode - reduces conversion readout latency and supports multi-device bus sharing. |
| Operating Temp | -40°C to +85°C - qualified for deployment in field-deployed portable instrumentation and remote monitoring systems. |
Pinout & Package
The MAX1136EUA+ is housed in an 8-pin µMAX® package (3mm × 3mm, 0.5mm pitch), optimized for space-constrained portable designs. Thermal pad on underside improves power dissipation in continuous conversion mode.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1–3 | AIN0–AIN2 | Analog input channels 0–2 - accept single-ended or differential signals referenced to GND or internal VREF. |
| 4 | AIN3/REF | Configurable terminal: analog input 3 or reference voltage output/input - selected via Setup Register bit SEL[2:1]. |
| 5 | SCL | I²C clock input - synchronizes all data transfers; supports fast mode (400kHz) and high-speed mode (1.7MHz). |
| 6 | SDA | I²C bidirectional data line - carries setup bytes, configuration commands, and 10-bit conversion results. |
| 7 | GND | Analog/digital ground reference - must be connected to low-impedance system ground plane for noise immunity. |
| 8 | VDD | Positive supply input - requires local 0.1µF ceramic bypass capacitor to GND for stable ADC performance. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ | Reduces supply current to <1µA between conversions - extends battery life in intermittent-sampling applications like remote sensors. |
| Software-Configurable Input Modes | Single-ended/differential and unipolar/bipolar selection via I²C register writes - eliminates external component changes during firmware updates. |
| Internal Track/Hold & Clock | Eliminates need for external sample-hold IC or clock generator - simplifies BOM and PCB layout in compact handheld devices. |
| Channel-Scan FIFO | Automatically sequences through up to 4 inputs and buffers results - enables synchronized multi-sensor acquisition without host CPU intervention. |
| Low Source Impedance Tolerance | Accurate sampling with ≤1.5kΩ source impedance - allows direct connection to resistive sensors or op-amp outputs without buffering. |
Applications
| Medical Instrumentation | Battery-Powered Test Equipment |
|---|---|
|
Use Scenario: Portable ECG or blood glucose meter acquiring analog biosignals from electrodes or electrochemical sensors. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog front-end outputs with precise timing control via I²C-triggered conversions. Use Value: 4.096V internal reference ensures consistent 10-bit resolution across varying battery voltage (4.5–5.5V), reducing calibration overhead. |
Use Scenario: Handheld multimeter or LCR meter measuring voltage, current, or impedance under battery power. IC Role / Device Role / Timing Role: High-accuracy ADC interfacing with multiplexed analog signal paths and auto-ranging circuitry. Use Value: Channel-scan FIFO and software-configurable input modes enable rapid reconfiguration between measurement types without hardware change. |
| Solar-Powered Remote Systems | System Supervision |
|
Use Scenario: Off-grid environmental monitor logging solar panel voltage, battery state-of-charge, and temperature using photovoltaic harvesting. IC Role / Device Role / Timing Role: Low-quiescent-current ADC performing periodic sensor reads during ultra-low-power sleep cycles. Use Value: AutoShutdown™ cuts current to <1µA between samples - enabling years of operation on small Li-ion or supercapacitor storage. |
Use Scenario: Industrial controller board monitoring supply rail voltages, thermal sensors, and fan tachometer signals. IC Role / Device Role / Timing Role: System health ADC providing real-time analog telemetry to host MCU via compact I²C interface. Use Value: 8-pin µMAX footprint and single 5V supply simplify integration into dense control PCBs while maintaining ±1 LSB linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1137EUA+ | Same 4-channel, 10-bit architecture but 2.048V internal reference and 2.7–3.6V supply range. | Optimized for 3.3V systems (e.g., ARM Cortex-M microcontrollers); lower full-scale range reduces dynamic range for high-voltage sensing. | Select when operating from 3.3V rails and requiring identical pinout/functionality with reduced reference voltage. |
| ADS7822U | 8-pin SOIC, 12-bit resolution, SPI interface, 3.3V-only supply (2.7–3.6V), no internal reference. | Requires external reference and level-shifting for 5V systems; higher resolution trades off speed (up to 50ksps) and interface compatibility. | Choose for higher precision in 3.3V designs where SPI is preferred and external reference is acceptable. |
Compared with MAX1137EUA+, the MAX1136EUA+ offers higher full-scale input range and 5V compatibility but sacrifices 3.3V native operation; versus ADS7822U, it provides I²C simplicity and integrated reference at the cost of resolution and interface flexibility.
Availability
MAX1136EUA+ is available at Aetrix Electronics and suitable for battery-powered test equipment, portable medical instrumentation, and solar-powered remote monitoring systems requiring stable component supply across extended temperature ranges.
Supply support for MAX1136EUA+ 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, medical, and communications applications.
The MAX1136–MAX1139 family targets portable, low-power data acquisition systems requiring integrated references, compact packaging, and I²C simplicity without sacrificing DC accuracy or dynamic performance.
FAQ
What is the maximum sampling rate of the MAX1136EUA+ and under what conditions is it achieved?
The MAX1136EUA+ achieves a maximum sampling rate of 94.4ksps when operating in I²C high-speed mode (1.7MHz SCL) with external clocking and the internal reference enabled. This rate assumes VDD = 5V, TA = +25°C, and unipolar single-ended input configuration. At lower clock frequencies or in fast mode (400kHz), throughput drops to 22.2ksps.
Does the MAX1136EUA+ require an external reference voltage, or does it include an internal one?
The MAX1136EUA+ includes a factory-trimmed 4.096V internal reference, eliminating the need for an external reference in most applications. It also supports external reference voltages from 1V to VDD, allowing users to optimize full-scale range or improve accuracy with a precision external source. The internal reference is enabled by default after power-up.
How many analog input channels does the MAX1136EUA+ support, and how are they configured?
The MAX1136EUA+ supports four analog input channels (AIN0–AIN3). These can be used in single-ended mode (each referenced to GND) or as two fully differential pairs (AIN0–AIN1, AIN2–AIN3), selected via the SGL/DIF bit in the configuration byte. Input mode, polarity (unipolar/bipolar), and channel selection are all software-configurable over I²C.
What package type is used for the MAX1136EUA+, and what are its key mechanical characteristics?
The MAX1136EUA+ uses an 8-pin µMAX® package (3mm × 3mm body, 0.5mm lead pitch), with exposed thermal pad on the underside. This RoHS-compliant, lead-free package supports reflow soldering and provides enhanced thermal performance for sustained conversion duty cycles in compact handheld enclosures.
Can the MAX1136EUA+ operate from a 3.3V supply, or is it strictly a 5V device?
The MAX1136EUA+ is specified only for 4.5V to 5.5V single-supply operation and must not be operated below 4.5V. For 3.3V systems, the pin-compatible MAX1137EUA+ (2.048V reference, 2.7–3.6V supply) is the designated alternative within the same family - both share identical 8-pin µMAX packaging and register map.
MAX1136EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 94.4k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-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:
- -
MAX1136EUA+ FAQ
1.How can I place an order for MAX1136EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1136EUA+ 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 MAX1136EUA+ reliable?
The price and inventory of MAX1136EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1136EUA+ is usually 5 days.
3.What payment methods are accepted for MAX1136EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1136EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1136EUA+?
MAX1136EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1136EUA+ 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 MAX1136EUA+?
For technical support, including MAX1136EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1136EUA+ requirements.
6.How does Aetrix verify that MAX1136EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX1136EUA+ 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 MAX1136EUA+ meets industry standards.
7.What is the process for return or replacement of MAX1136EUA+?
All MAX1136EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1136EUA+, 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 MAX1136EUA+ part is unused and in its original packaging.
Return procedure for MAX1136EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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