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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:
- IC ADC 8BIT SAR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,655
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Product details
Overview
MAX1036EKA+T 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 maximum sampling rate at 350µA supply current and supports software-configurable unipolar/single-ended or pseudo-differential input modes for embedded system supervision and battery-powered instrumentation.
For engineers reviewing the MAX1036EKA+T datasheet, MAX1036EKA+T pinout, MAX1036EKA+T application, or MAX1036EKA+T equivalent, key selection considerations include its 8-pin SOT23 package, ±2 LSB total unadjusted error (TUE), internal clock architecture, 4.096V reference compatibility, and I²C fast/high-speed mode timing compliance.
Technical Context
The MAX1036EKA+T employs successive-approximation register (SAR) architecture with integrated track-and-hold circuitry, enabling precise sampling of analog signals up to 2MHz small-signal bandwidth. Its conversion process requires eight internal clock cycles per sample and supports both internal (2.25MHz) and external clocking.
It uses a switched-capacitor DAC and comparator-based conversion core, with analog input multiplexer selecting among four single-ended channels (AIN0–AIN3) or two pseudo-differential pairs. Input configuration is fully controlled via I²C setup/configuration bytes, including SGL/DIF, BIP/UNI, and REF selection bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit SAR ADC - provides 256 discrete output codes for moderate-precision measurement tasks. |
| Total Unadjusted Error (TUE) | ±2 LSB - defines worst-case deviation between ideal and actual transfer function without calibration. |
| Sampling Rate | 188 ksps max - enables real-time monitoring of fast transients in power or sensor systems. |
| Supply Current | 350 µA at 188 ksps - allows continuous high-throughput operation in 5V battery-powered devices. |
| Reference Voltage | 4.096 V internal - matches common microcontroller ADC reference domains and simplifies voltage scaling. |
| I²C Interface Speed | Up to 1.7 MHz (high-speed mode) - reduces data readout latency and supports dense polling in multi-channel systems. |
| Analog Input Range | 0 V to VREF (unipolar, single-ended) - compatible with ground-referenced sensors and industrial signal chains. |
| Operating Temperature | −40°C to +85°C - qualified for extended industrial environments without derating. |
Pinout & Package
MAX1036EKA+T is housed in an 8-pin SOT23 package - compact, surface-mountable, and optimized for space-constrained PCB layouts in portable instrumentation and sensor nodes.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | AIN0 | Analog input channel 0 - primary single-ended input; referenced to GND in unipolar mode. |
| 2 | AIN1 | Analog input channel 1 - second dedicated single-ended input with identical electrical characteristics. |
| 3 | AIN2 | Analog input channel 2 - third dedicated single-ended input; shares same acquisition timing and T/H path. |
| 4 | AIN3/REF | Configurable terminal - functions as AIN3 in analog mode or as reference input/output when SEL[2:1]=11. |
| 5 | SCL | I²C clock input - controls data transfer timing; supports 400 kHz fast mode and 1.7 MHz high-speed mode. |
| 6 | SDA | I²C bidirectional data line - carries configuration bytes, conversion results, and acknowledge signaling. |
| 7 | GND | Analog/digital ground reference - must be connected to low-impedance system ground plane for noise immunity. |
| 8 | VDD | Positive supply rail - requires 4.5V–5.5V operation and local 0.1µF ceramic bypass capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ power management | Reduces supply current to <1 µA between conversions - extends battery life in intermittent-sampling applications. |
| Software-configurable input topology | Single-ended (4-channel) or pseudo-differential (2-channel) mode selected via I²C configuration byte - eliminates external MUX hardware. |
| Internal 4.096V reference | Stable, factory-trimmed reference with 120 ppm/°C tempco - avoids need for external precision reference ICs. |
| Integrated track/hold circuit | Acquisition time ≤588 ns - ensures accurate sampling of fast-rising signals without external T/H amplifier. |
| Channel-scan FIFO mode | Automated sequential conversion across all enabled inputs - simplifies firmware for multi-sensor polling. |
| Small-signal analog bandwidth | 2.0 MHz - supports undersampling of periodic signals beyond Nyquist limit for spectral analysis. |
Applications
| Handheld Portable Instrumentation | Battery-Powered Test Equipment |
|---|---|
Use Scenario: Compact multimeter or environmental sensor node measuring temperature, voltage, and current with minimal board area. IC Role / Device Role / Timing Role: Primary ADC capturing analog sensor outputs; interfaces directly to MCU over I²C with no level-shifting required. Use Value: 350 µA active current and AutoShutdown™ enable >1-year battery life on two AA cells while maintaining 188 ksps readiness. |
Use Scenario: Field-deployable oscilloscope probe or signal analyzer requiring low-noise, multi-channel digitization. IC Role / Device Role / Timing Role: Front-end ADC providing synchronized sampling across four analog inputs using internal FIFO scan mode. Use Value: 4.096V internal reference ensures consistent full-scale range across channels, reducing calibration overhead in production test fixtures. |
| Solar-Powered Remote Monitoring | System Supervision in Industrial Controllers |
Use Scenario: Off-grid telemetry unit logging panel voltage, battery SOC, and ambient conditions using solar charging. IC Role / Device Role / Timing Role: Low-quiescent ADC acquiring sensor data during brief wake-up windows; enters <1 µA shutdown between reads. Use Value: Single 5V supply compatibility and 4.5–5.5V operating range align with buck-boost solar charge controller outputs. |
Use Scenario: PLC or motor drive monitoring DC bus voltage, heatsink temperature, and fault flags in real time. IC Role / Device Role / Timing Role: Embedded supervisor ADC feeding health metrics to safety-critical firmware; operates continuously at 10 ksps (8 µA). Use Value: ±2 LSB TUE and −40°C to +85°C qualification ensure reliable measurements under thermal stress and voltage ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, I²C-interfaced, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit, 200 ksps, SPI interface, 2.7–5.25V supply, no internal reference - requires external 2.5V ref. | Requires SPI host and external reference; lacks AutoShutdown™ and FIFO scan mode. | Select when SPI is preferred over I²C and board space allows separate reference IC. |
| MCP3021A0T-E/OT | 10-bit, 188 ksps, I²C interface, 2.7–5.5V, internal 2.048V reference - higher resolution but lower TUE (±1.5 LSB). | Higher resolution but incompatible reference voltage; not pin-compatible with MAX1036EKA+T. | Select when 10-bit precision is mandatory and system can accommodate different reference scaling. |
Compared with ADS7822U and MCP3021A0T-E/OT, MAX1036EKA+T uniquely combines 4.096V internal reference, 4-channel single-ended topology, and AutoShutdown™ in an 8-pin SOT23 - optimizing for 5V battery-powered systems where reference integration and ultra-low standby current are critical.
Availability
MAX1036EKA+T is available at Aetrix Electronics and suitable for handheld portable instrumentation, battery-powered test equipment, and solar-powered remote monitoring requiring stable component supply and long-term industrial availability.
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 industrial, medical, and communications applications - emphasizing integration, reliability, and low-power operation.
MAX1036EKA+T belongs to the MAX1036–MAX1039 family of low-power, multichannel, I²C ADCs engineered for space- and energy-constrained embedded systems requiring high integration and guaranteed industrial temperature performance.
FAQ
What is the maximum sampling rate of the MAX1036EKA+T and under what conditions is it achieved?
The MAX1036EKA+T achieves a maximum sampling rate of 188 ksps when operating in I²C high-speed mode (1.7 MHz SCL) with external clocking and 4.096V internal reference. This rate requires proper bus timing compliance, adequate decoupling on VDD, and configuration for unipolar single-ended input mode. At this rate, supply current is 350 µA, and the device remains fully functional across −40°C to +85°C.
Does the MAX1036EKA+T support pseudo-differential input mode, and how is it configured?
Yes, the MAX1036EKA+T supports pseudo-differential input mode via the SGL/DIF bit in the configuration byte (set to '0'). In this mode, AIN0–AIN3 serve as positive inputs, and AIN3/REF or GND acts as the stable negative reference. The negative input must remain within ±0.5 LSB of GND during conversion; a 0.1 µF capacitor to GND is recommended. This mode enables rejection of common-mode noise in sensor bridges without requiring a full differential front-end.
What is the purpose of the AIN3/REF pin on the MAX1036EKA+T?
The AIN3/REF pin on the MAX1036EKA+T is multifunctional: it serves as analog input channel 3 in standard operation, or as reference input/output when SEL[2:1] = 11 in the setup byte. When used as REF, it sources or sinks reference current and must be decoupled with a 0.01 µF capacitor to GND. This dual-role pin reduces pin count while preserving flexibility for systems needing external reference control or additional analog input.
How does AutoShutdown™ reduce power consumption in the MAX1036EKA+T?
AutoShutdown™ powers down the MAX1036EKA+T's analog core-including the reference buffer, track/hold, and conversion circuitry-between conversions. When idle, supply current drops below 1 µA. This feature is automatic and transparent to firmware; it activates after each conversion completes and deactivates just before the next acquisition begins. It is especially effective at low throughput rates (e.g., 1 ksps → 2 µA average current), extending battery life in intermittent-sensing applications.
Is the MAX1036EKA+T pin-compatible with other devices in the MAX1036–MAX1039 family?
No, the MAX1036EKA+T is not pin-compatible with MAX1038/MAX1039 (16-pin QSOP) due to differing pin counts and channel count. However, it is pin-compatible with MAX1037EKA+T (also 8-pin SOT23), sharing identical pinout and mechanical footprint. Key differences include internal reference voltage (4.096V vs. 2.048V) and supply voltage range (4.5–5.5V vs. 2.7–3.6V), requiring careful schematic review before substitution.
MAX1036EKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 188k
- 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:
- 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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