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Analog Devices Inc./Maxim Integrated MAX1036EKA-T
- Part No.:
- MAX1036EKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8
- Datasheet:
-
MAX1036EKA-T.pdf
- Description:
- 4-CHANNEL SERIAL 8-BIT ADC
- Quantity:
- Payment:
- Shipping:
Inventory:4,427
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Product details
Overview
MAX1036EKA-T from Maxim Integrated is an 8-bit, 4-channel, low-power analog-to-digital converter (ADC) 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 unipolar single-ended or pseudo-differential input configurations for precision sensor digitization in battery-constrained systems.
For engineers reviewing the MAX1036EKA-T datasheet, MAX1036EKA-T pinout, MAX1036EKA-T application, or MAX1036EKA-T equivalent, this page provides verified technical context, exact pin functions, real-world use cases, and validated alternative parts - all grounded in Maxim's official specifications for the MAX1036EKA-T variant.
Technical Context
The MAX1036EKA-T uses successive-approximation architecture with internal track/hold circuitry and a switched-capacitor DAC. Its analog front-end supports software-configurable unipolar/bipolar and single-ended/pseudo-differential modes via register-controlled setup bytes, with channel selection handled by CS[3:0] bits.
It operates exclusively in I²C 2-wire mode with programmable timing: Fast Mode (400kHz) or High-Speed Mode (1.7MHz), requiring explicit HS-mode master code (00001XXX) activation. Conversion clocking is either internal (2.25MHz) or external, with acquisition time dependent on source impedance and clock mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for moderate-precision measurement applications. |
| Sampling Rate | 188ksps - enables real-time monitoring of fast transients up to ~20kHz bandwidth with undersampling capability. |
| Supply Voltage | 4.5V to 5.5V - compatible with standard 5V logic and industrial power rails; not operable below 4.5V. |
| Internal Reference | 4.096V - provides full-scale range matching common microcontroller ADC references and simplifies system calibration. |
| Total Unadjusted Error | ±2 LSB - ensures monotonicity and ≤0.8% full-scale absolute accuracy without calibration. |
| Supply Current | 350µA at 188ksps; 1µA in AutoShutdown™ - enables multi-year battery life in intermittent-sampling portable instruments. |
| I²C Interface Speed | Up to 1.7MHz (High-Speed Mode) - reduces conversion readout latency to <10µs per sample in burst mode. |
Pinout & Package
The MAX1036EKA-T is housed in an 8-pin SOT23 package (JEDEC MO-178AA), with 0.65mm pitch and exposed pad optional per manufacturer drawing. Thermal resistance θJA = 140°C/W; recommended PCB layout includes 0.1µF VDD bypass capacitor near Pin 8.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | AIN0 | Analog input channel 0 - single-ended or pseudo-differential '+' input; voltage range 0 to VREF (unipolar). |
| 2 | AIN1 | Analog input channel 1 - identical electrical behavior to AIN0; shares same T/H capacitor and reference path. |
| 3 | AIN2 | Analog input channel 2 - software-selectable via CS[3:0]; no hardware mux switching delay in scan mode. |
| 4 | AIN3/REF | Configurable terminal - functions as AIN3 in analog mode or reference output/input when SEL[2:1]=11. |
| 5 | SCL | I²C clock input - accepts 400kHz (Fast Mode) or 1.7MHz (HS-Mode) signals; requires external pull-up. |
| 6 | SDA | I²C bidirectional data line - open-drain output; must be pulled high externally; supports ACK/NACK handshaking. |
| 7 | GND | Analog/digital ground reference - single ground plane required; decoupling capacitor connects here. |
| 8 | VDD | Positive supply input - 4.5V–5.5V only; bypass with 0.1µF ceramic capacitor directly to GND (Pin 7). |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ | Reduces supply current to <1µA between conversions - eliminates need for external enable control in duty-cycled systems. |
| Software-Configurable Input Mode | Single-ended or pseudo-differential via SGL/DIF bit - enables flexible sensor interfacing (e.g., thermocouples vs. RTDs) without hardware change. |
| Internal FIFO with Channel-Scan Mode | Automatically cycles through up to 4 channels with auto-incremented CS[3:0] - simplifies firmware for multi-sensor polling. |
| Low Source Impedance Tolerance | Accurate sampling with source impedances ≤1.5kΩ - avoids mandatory op-amp buffering in many resistive sensor designs. |
| Integrated 4.096V Reference | 120ppm/°C tempco, ±1.5LSB offset error - eliminates external reference IC and saves board space in compact 5V systems. |
Applications
| Medical Instrument Front-End | Battery-Powered Test Equipment |
|---|---|
Use Scenario: Digitizing ECG lead voltages and temperature sensor outputs in handheld patient monitors. IC Role / Device Role / Timing Role: Primary signal acquisition ADC handling four biopotential inputs with synchronized sampling and low-noise T/H. Use Value: 350µA active current extends AA-battery life to >12 months in clinical spot-check devices operating at 10ksps. |
Use Scenario: Measuring voltage, current, and resistance in portable multimeters and handheld calibrators. IC Role / Device Role / Timing Role: Core 8-bit digitizer interfacing with precision shunts, dividers, and thermistors via configurable analog inputs. Use Value: 4.096V internal reference matches standard DMM full-scale ranges, eliminating reference trimming and reducing BOM count. |
| Solar-Powered Remote Sensor Node | System Supervision in Industrial PLCs |
Use Scenario: Monitoring panel voltage, battery SOC, and environmental sensors in off-grid telemetry units. IC Role / Device Role / Timing Role: Low-power ADC managing periodic wake-up sampling of solar charge controller analog feedback paths. Use Value: AutoShutdown™ cuts average current to <2µA during 99% sleep time, enabling years of operation on 10Ah LiFePO₄ batteries. |
Use Scenario: Reading rail voltages, heatsink temperatures, and fan tachometer signals inside DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Dedicated supervision ADC providing isolated analog monitoring independent of main CPU ADC resources. Use Value: I²C interface allows direct connection to PLC's system management bus without GPIO or SPI resource contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, multichannel, I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-pin SOIC; 2.7V–5.25V supply; no internal reference; requires external 2.5V ref; SPI interface only. | Requires external reference and level-shifting for 5V systems; incompatible I/O protocol prevents drop-in replacement. | Select when SPI is preferred and board space allows SOIC; avoid if I²C bus sharing or internal reference is required. |
| MAX11602EKA+T | 8-bit, 4-channel, same SOT23-8 package; 2.7V–3.6V supply only; 2.048V internal reference; identical I²C timing. | Not rated for 5V operation; lower reference voltage limits full-scale range in 5V sensor interfaces. | Valid alternative only in 3.3V systems where 2.048V reference suffices; unsuitable for MAX1036EKA-T's 4.5V–5.5V domain. |
Compared with ADS7822U and MAX11602EKA+T, the MAX1036EKA-T uniquely combines 5V operation, integrated 4.096V reference, and I²C compatibility in an ultra-small SOT23-8 package - making it the sole option for space-constrained, battery-powered 5V sensor nodes requiring minimal external components.
Availability
MAX1036EKA-T is available at Aetrix Electronics and suitable for medical instrument front-ends, battery-powered test equipment, and solar-powered remote sensor nodes requiring stable component supply across extended industrial temperature ranges (-40°C to +85°C).
Supply support for MAX1036EKA-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, medical, and communications applications.
The MAX1036–MAX1039 family targets ultra-low-power, multichannel data acquisition in portable and energy-harvested systems - emphasizing integration (T/H, ref, clock, I²C), small footprint, and guaranteed performance over -40°C to +85°C.
FAQ
What is the maximum sampling rate supported by the MAX1036EKA-T?
The MAX1036EKA-T achieves a maximum sampling rate of 188ksps when operating in I²C High-Speed Mode (1.7MHz clock) with external clocking. This requires explicit HS-mode activation using the master code 00001XXX followed by a repeated START condition. At 188ksps, supply current is 350µA with internal reference enabled.
Does the MAX1036EKA-T require an external reference voltage?
No, the MAX1036EKA-T includes a factory-trimmed 4.096V internal reference usable as the ADC's full-scale reference. It can also accept an external reference from 1.0V to VDD (4.5V–5.5V), but doing so disables the internal reference buffer and slightly reduces supply current at high throughput rates.
Can the MAX1036EKA-T operate from a 3.3V supply?
No - the MAX1036EKA-T is specified only for 4.5V to 5.5V operation. For 3.3V systems, the pin-compatible MAX1037EKA-T (2.048V reference, 2.7V–3.6V supply) is the designated variant within the same family and package.
How many analog input channels does the MAX1036EKA-T support?
The MAX1036EKA-T supports four analog input channels (AIN0–AIN3), configurable as single-ended or pseudo-differential pairs. Channel selection is controlled via the CS[3:0] bits in the configuration register, and automatic scanning across all four channels is supported via FIFO mode.
What package type is used for the MAX1036EKA-T?
The MAX1036EKA-T is supplied in an 8-pin SOT23 package (JEDEC MO-178AA) with top mark "AAJE". It features gull-wing leads, 0.65mm pitch, and is RoHS-compliant and lead-free. Thermal design requires a minimum 0.1µF VDD-to-GND ceramic bypass capacitor adjacent to Pin 8 and Pin 7.
MAX1036EKA-T 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:
- 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:
- -
MAX1036EKA-T FAQ
1.How can I place an order for MAX1036EKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1036EKA-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 MAX1036EKA-T reliable?
The price and inventory of MAX1036EKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1036EKA-T is usually 5 days.
3.What payment methods are accepted for MAX1036EKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1036EKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1036EKA-T?
MAX1036EKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1036EKA-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 MAX1036EKA-T?
For technical support, including MAX1036EKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1036EKA-T requirements.
6.How does Aetrix verify that MAX1036EKA-T is sourced from the original manufacturer or authorized distributors?
All MAX1036EKA-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 MAX1036EKA-T meets industry standards.
7.What is the process for return or replacement of MAX1036EKA-T?
All MAX1036EKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1036EKA-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 MAX1036EKA-T part is unused and in its original packaging.
Return procedure for MAX1036EKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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