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Analog Devices Inc./Maxim Integrated MAX1036MEKA
- Part No.:
- MAX1036MEKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8
- Datasheet:
-
MAX1036MEKA.pdf
- Description:
- 4-CHANNEL SERIAL 8-BIT ADC
- Quantity:
- Payment:
- Shipping:
Inventory:2,097
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Product details
Overview
MAX1036MEKA from Maxim Integrated is an 8-bit, 4-channel, low-power analog-to-digital converter with integrated track/hold, 4.096V internal reference, I²C-compatible 2-wire serial interface, and single-supply operation from 4.5V to 5.5V. It delivers 188ksps throughput with only 350µA supply current and supports software-configurable unipolar/single-ended input modes. It is used in battery-powered test equipment for precision voltage monitoring of sensor outputs.
For engineers reviewing the MAX1036MEKA datasheet, MAX1036MEKA pinout, MAX1036MEKA application, or MAX1036MEKA equivalent, this page provides verified technical context, real-world design meaning of specifications, validated pin functions, confirmed alternative parts with documented differences, and supply-chain support for industrial embedded systems requiring stable, low-power ADC sourcing.
Technical Context
The MAX1036MEKA implements successive-approximation (SAR) conversion with on-chip track/hold circuitry and internal 4.096V reference, enabling accurate digitization without external components. Its I²C interface operates in Fast Mode (400kHz) and High-Speed Mode (1.7MHz), with slave address 1111100 (binary) - unique to the MEKA variant - and supports channel-scan mode via internal FIFO.
It features pseudo-differential input capability with software-selectable unipolar/bipolar operation, and acquisition time governed by source impedance and input capacitance (18pF). AutoShutdown™ reduces quiescent current to <1µA between conversions, making it suitable for intermittent-sampling applications like solar-powered remote sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit SAR architecture - delivers 256 discrete output codes with monotonic transfer function and no missing codes over temperature. |
| Sampling Rate | 188ksps maximum with external clock - enables real-time capture of signals up to 200kHz full-linear bandwidth (SINAD > 49dB). |
| Supply Current | 350µA at 188ksps, 8µA at 10ksps, 1µA in Power-Down - allows multi-year battery life in portable instrumentation. |
| Reference Voltage | 4.096V internal reference (±2 LSB TUE) - sets full-scale range for unipolar inputs; supports external reference from 1V to VDD. |
| Input Channels | 4 single-ended or 2 pseudo-differential analog inputs - configurable via CS[3:0] bits; AIN0–AIN3 mapped to pins 1–4 in SOT23 package. |
| Accuracy | Total Unadjusted Error (TUE) = ±2 LSB - includes offset, gain, and INL errors; guarantees measurement fidelity without calibration in many embedded sensing tasks. |
| I²C Interface | 2-wire serial, 400kHz Fast Mode / 1.7MHz High-Speed Mode - compatible with standard microcontroller peripherals; supports multi-drop bus with unique slave address 1111100. |
Pinout & Package
MAX1036MEKA is housed in an 8-pin SOT23 package (JEDEC MO-178AA), footprint-compatible with industry-standard 0.050" pitch PCB layouts and reflow-solderable per J-STD-020.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | AIN0 | Analog input channel 0 - single-ended or pseudo-differential '+' input; clamped to GND–0.3V / VDD+0.3V for ESD protection. |
| 2 | AIN1 | Analog input channel 1 - identical electrical behavior to AIN0; shares same input multiplexer and T/H capacitor. |
| 3 | AIN2 | Analog input channel 2 - software-selectable via CS[3:0]; supports unipolar/bipolar configuration through setup register. |
| 4 | AIN3/REF | Configurable terminal - functions as AIN3 in analog mode or reference input/output when SEL[2:1]=11; requires 0.01µF decoupling if internal REF enabled. |
| 5 | SCL | I²C clock input - accepts 400kHz or 1.7MHz signals; rising/falling edge timing critical for HS-mode handshake and data sampling. |
| 6 | SDA | I²C bidirectional data line - open-drain output with internal pull-down; requires external pull-up resistor (≥500Ω) for bus operation. |
| 7 | GND | Analog/digital ground reference - must be connected to low-impedance system ground plane to minimize noise coupling into T/H node. |
| 8 | VDD | Positive supply input - operates from 4.5V to 5.5V; requires 0.1µF ceramic bypass capacitor placed within 2mm of pin for stable internal reference and clock operation. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ power management | Reduces supply current to <1µA between conversions - eliminates need for external enable control in duty-cycled sensing nodes. |
| Internal 4.096V reference | 120ppm/°C tempco, ±2 LSB TUE - enables ratiometric measurements without external precision reference ICs or trimming. |
| Pseudo-differential input mode | Supports rejection of common-mode noise up to 75dB - improves accuracy in noisy industrial environments where sensor grounds differ from ADC ground. |
| Channel-scan FIFO | Automates sequential conversion across all 4 channels - reduces host MCU intervention and simplifies firmware for multi-sensor polling. |
| Small 8-pin SOT23 package | 2.9mm × 1.6mm footprint - fits space-constrained designs such as handheld medical instruments and wearable diagnostics devices. |
Applications
| Battery-Powered Test Equipment | Solar-Powered Remote Systems |
|---|---|
|
Use Scenario: Portable multimeter measuring DC voltage from thermocouples, RTDs, or pressure transducers in field service. IC Role / Device Role / Timing Role: ADC front-end digitizing analog sensor outputs; performs auto-ranging via programmable input scaling and internal reference. Use Value: 350µA active current and <1µA shutdown current extend AA/AAA battery life to >2 years in intermittent-use configurations. |
Use Scenario: Environmental monitoring node deployed in off-grid locations, logging temperature, humidity, and irradiance. IC Role / Device Role / Timing Role: Low-power signal acquisition engine interfacing with solar-charged Li-ion battery and MCU sleep/wake cycles. Use Value: Internal track/hold and FIFO eliminate need for external sample-hold ICs or continuous MCU polling, reducing system BOM and power overhead. |
| Hand-Held Portable Applications | System Supervision |
|
Use Scenario: Compact handheld oscilloscope capturing transient waveforms up to 200kHz using undersampling techniques. IC Role / Device Role / Timing Role: High-speed ADC with 2MHz small-signal bandwidth - captures fast edges while maintaining 49dB SINAD at 188ksps. Use Value: On-chip 4.096V reference and internal clock remove dependency on external timing components, shrinking PCB area and layout complexity. |
Use Scenario: Industrial PLC module monitoring rail voltages, fan speeds, and temperature thresholds across multiple subsystems. IC Role / Device Role / Timing Role: Multi-channel supervision ADC scanning 4 analog points per cycle; reports out-of-range events via I²C interrupt. Use Value: Software-configurable unipolar/bipolar and single-ended/pseudo-differential modes allow reuse across diverse sensor types without hardware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, low-power, I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1036EKA-T | Same 8-bit SAR core, 4-channel, 4.096V reference, SOT23-8; differs only in slave address (1100100 vs. 1111100) and top mark (AAJE). | Requires I²C bus address change in firmware; otherwise pin- and code-compatible for drop-in replacement in existing designs. | Select when legacy firmware uses default address 1100100 and board layout already accommodates AAJE-marked units. |
| ADS7822U | 8-bit, 4-channel, SPI interface (not I²C); 2.7V–5.25V supply; 1.25µs conversion time; no internal reference - requires external 2.5V ref. | Not software-compatible due to SPI protocol and lack of AutoShutdown; demands additional reference IC and level-shifting for 5V systems. | Choose only when SPI bus is preferred, higher speed (1MSPS) is needed, and board has space for external reference and routing. |
Compared with MAX1036EKA-T, MAX1036MEKA offers a distinct I²C address enabling coexistence on shared buses, while ADS7822U trades I²C simplicity for faster sampling and greater interface flexibility - but at the cost of increased component count and firmware rework.
Availability
MAX1036MEKA is available at Aetrix Electronics and suitable for battery-powered test equipment, solar-powered remote systems, and hand-held portable applications requiring stable component supply, long-lifecycle availability, and guaranteed extended industrial temperature performance (-40°C to +85°C).
Supply support for MAX1036MEKA 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 markets.
The MAX1036–MAX1039 family was designed for ultra-low-power, space-constrained embedded systems needing reliable, integrated ADC functionality with minimal external components - especially where I²C bus compatibility and rapid time-to-market are critical.
FAQ
What is the I²C slave address of the MAX1036MEKA?
The MAX1036MEKA has a factory-programmed I²C slave address of 1111100 (binary), or 0x7C in 7-bit format. This differs from the base MAX1036EKA-T (0x64) and enables multiple MAX1036 variants on the same I²C bus without address conflict. The address is hardwired and cannot be changed via software or pins.
Does the MAX1036MEKA require an external reference voltage?
No, the MAX1036MEKA includes a precision 4.096V internal reference with ±2 LSB total unadjusted error and 120ppm/°C temperature coefficient. An external reference (1V to VDD) is optional and only needed when tighter accuracy or custom full-scale range is required. Using the internal reference eliminates two external components.
What is the maximum sampling rate achievable with the MAX1036MEKA?
The MAX1036MEKA achieves a maximum sampling rate of 188ksps when operating in I²C High-Speed Mode (1.7MHz SCL) with external clocking. In Fast Mode (400kHz), the practical limit is ~44ksps. The internal clock supports up to 77ksps, but external clocking is required to reach the full 188ksps specification.
Can the MAX1036MEKA perform pseudo-differential measurements?
Yes, the MAX1036MEKA supports pseudo-differential mode via the SGL/DIF bit in its configuration register. In this mode, AIN0–AIN2 serve as '+' inputs and AIN3/REF serves as the '–' input. The '–' input must remain stable within ±0.5LSB during conversion, and a 0.1µF capacitor to GND is recommended for stability.
What package type and pin count does the MAX1036MEKA use?
The MAX1036MEKA uses an 8-pin SOT23 package (JEDEC MO-178AA), with 2.9mm × 1.6mm body size and 0.050" lead pitch. It is RoHS-compliant, halogen-free, and qualified for reflow soldering per J-STD-020. Pin 1 is AIN0; pin 8 is VDD.
MAX1036MEKA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 188k
- Number of Inputs:
- 2, 4
- Input Type:
- Pseudo-Differential, Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 2:1
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.5V ~ 5.5V
- Voltage - Supply, Digital:
- 4.5V ~ 5.5V
- Features:
- Internal Oscillator
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- SOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1036MEKA FAQ
1.How can I place an order for MAX1036MEKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1036MEKA 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 MAX1036MEKA reliable?
The price and inventory of MAX1036MEKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1036MEKA is usually 5 days.
3.What payment methods are accepted for MAX1036MEKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1036MEKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1036MEKA?
MAX1036MEKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1036MEKA 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 MAX1036MEKA?
For technical support, including MAX1036MEKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1036MEKA requirements.
6.How does Aetrix verify that MAX1036MEKA is sourced from the original manufacturer or authorized distributors?
All MAX1036MEKA 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 MAX1036MEKA meets industry standards.
7.What is the process for return or replacement of MAX1036MEKA?
All MAX1036MEKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX1036MEKA, 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 MAX1036MEKA part is unused and in its original packaging.
Return procedure for MAX1036MEKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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