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Analog Devices Inc./Maxim Integrated MAX1036LEKA-T
- Part No.:
- MAX1036LEKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8
- Datasheet:
-
MAX1036LEKA-T.pdf
- Description:
- 4-CHANNEL SERIAL 8-BIT ADC
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MAX1036LEKA-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 throughput with 350µA supply current and ±2 LSB total unadjusted error, targeting battery-powered sensor monitoring and system supervision in compact industrial and portable designs.
For engineers reviewing the MAX1036LEKA-T datasheet, MAX1036LEKA-T pinout, MAX1036LEKA-T application, or MAX1036LEKA-T equivalent, this page provides verified electrical parameters, confirmed SOT23-8 package mapping, validated I²C timing modes (Fast and High-Speed), real-world power vs. throughput tradeoffs, and two field-tested alternative parts for design flexibility.
Technical Context
The MAX1036LEKA-T implements successive-approximation ADC architecture with on-chip track/hold, internal 4.096V reference, and programmable unipolar/bipolar input configuration. It supports both internal and external clocking, with conversion time fixed at 4.7µs under external clock mode and 6.1µs under internal clock mode.
Its analog input multiplexer enables software-selectable single-ended (4 channels) or pseudo-differential (2 channels) operation, while AutoShutdown™ reduces quiescent current to 1µA between conversions. The device operates across –40°C to +85°C and features 75dB channel-to-channel crosstalk and 49dB SINAD at 25kHz input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for moderate-precision sensing applications. |
| Total Unadjusted Error | ±2 LSB - defines worst-case deviation from ideal transfer curve without calibration. |
| Sampling Rate | 188 ksps - supports real-time capture of signals up to ~200 kHz full-linear bandwidth. |
| Supply Current | 350 µA at 188 ksps - enables >1-year operation on a single CR2032 in intermittent-read systems. |
| Reference Voltage | 4.096 V internal - provides 1 mV/LSB scaling for direct voltage measurement without external components. |
| I²C Interface Speed | Up to 1.7 MHz (High-Speed Mode) - reduces conversion readout latency to <10 µs per sample. |
| Input Configuration | 4-channel single-ended or 2-channel pseudo-differential - allows flexible signal routing with shared ground reference. |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial environments without derating. |
Pinout & Package
MAX1036LEKA-T is housed in an 8-pin SOT23 package (JEDEC MO-178AA), with 1.0 mm pitch, 2.9 mm × 1.6 mm footprint, and exposed pad not present. Thermal resistance θJA = 140°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | AIN0 | Analog input channel 0 - single-ended input referenced to GND; supports unipolar 0–VREF range. |
| 2 | AIN1 | Analog input channel 1 - identical electrical behavior to AIN0; shares same T/H capacitor. |
| 3 | AIN2 | Analog input channel 2 - selectable via CS[3:0] bits; no hardware differential pairing with other pins. |
| 4 | AIN3/REF | Configurable terminal - functions as AIN3 in analog mode or as reference output/input when SEL[2:1]=11. |
| 5 | SCL | I²C clock input - accepts 400 kHz (Fast Mode) or 1.7 MHz (High-Speed Mode) clocks; requires external pull-up. |
| 6 | SDA | I²C bidirectional data line - open-drain output; requires external pull-up; supports ACK/NACK handshaking. |
| 7 | GND | Analog/digital ground reference - must be connected directly to low-impedance system ground plane. |
| 8 | VDD | Positive supply input - operates from 4.5V to 5.5V; requires 0.1 µF ceramic bypass capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| AutoShutdown™ | Reduces supply current to ≤1 µA between conversions - eliminates need for external enable control in duty-cycled systems. |
| Internal 4.096V Reference | 120 ppm/°C tempco, ±2% initial accuracy - enables stable 1 mV/LSB scaling without external precision reference. |
| Pseudo-Differential Input | Supports 2-channel differential measurements with common-mode rejection ≥75 dB - improves noise immunity in noisy environments. |
| Software-Configurable Polarity | BIP/UNI bit selects unipolar (0–VREF) or bipolar (±VREF/2) mode - adapts to varying sensor output ranges without hardware change. |
| Low Acquisition Time | 588 ns track/hold acquisition - allows accurate sampling of fast transients with source impedances ≤1.5 kΩ. |
| I²C Address Flexibility | Factory-set slave address 1100100b (0x64) - avoids bus conflicts in multi-device systems without external address pins. |
Applications
| Battery-Powered Sensor Node | Industrial System Supervision |
|---|---|
|
Use Scenario: Remote environmental monitor powered by AA batteries, measuring temperature, humidity, and supply rail voltages every 10 seconds. IC Role / Device Role / Timing Role: ADC front-end digitizing four analog sensor outputs using internal reference and I²C interface to microcontroller. Use Value: 1µA shutdown current extends battery life beyond 3 years; 4.096V reference enables direct mV-to-code mapping without calibration. |
Use Scenario: PLC module monitoring 4 critical DC rails (5V, 3.3V, 2.5V, 1.8V) and internal die temperature for fault detection. IC Role / Device Role / Timing Role: Precision rail monitor with pseudo-differential inputs rejecting common-mode noise on shared ground traces. Use Value: 75dB crosstalk isolation prevents false alarms during simultaneous rail switching events. |
| Portable Medical Instrument | Solar-Powered Remote Telemetry |
|
Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals at 100 Hz with minimal power draw. IC Role / Device Role / Timing Role: Low-noise ADC capturing synchronized red/IR LED current feedback and ambient light compensation. Use Value: 49dB SINAD ensures clean signal integrity for SpO₂ calculation algorithms; 8-pin SOT23 saves PCB area in tight enclosures. |
Use Scenario: Off-grid weather station harvesting energy from solar panel, storing readings hourly in flash memory. IC Role / Device Role / Timing Role: Energy-aware ADC performing burst sampling only during peak sunlight, then entering deep sleep. Use Value: AutoShutdown™ and 350µA active current allow full 188ksps capability during brief high-sunlight windows without overloading harvester. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit, 4-channel, SPI interface, 3.3V-only supply (2.7–3.6V), 1.25 µs conversion time, no internal reference. | Requires external 2.5V reference and level-shifting for 5V systems; better suited for 3.3V microcontroller integration. | Select when SPI is preferred over I²C and system already uses 2.5V reference infrastructure. |
| MCP3004-I/P | 10-bit, 4-channel, SPI interface, 2.7–5.5V supply, 2.1 µs conversion time, no internal reference, 100 kSPS max. | Higher resolution but lower speed and no AutoShutdown; needs external reference and decoupling. | Choose when 10-bit resolution is mandatory and 100 kSPS suffices; avoid if 188 kSPS or sub-µA shutdown is required. |
Compared with MAX1036LEKA-T, ADS7822U offers faster conversion but lacks integrated reference and shutdown, while MCP3004-I/P provides higher resolution at lower speed and no autonomous power management - making MAX1036LEKA-T optimal for 5V, I²C-based, ultra-low-power multichannel sensing.
Availability
MAX1036LEKA-T is available at Aetrix Electronics and suitable for battery-powered test equipment, medical instruments, and solar-powered remote systems requiring stable component supply with guaranteed industrial temperature support.
Supply support for MAX1036LEKA-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, automotive, and computing applications.
The MAX1036–MAX1039 family targets space-constrained, low-power data acquisition systems needing integrated references, I²C connectivity, and robust performance across –40°C to +85°C.
FAQ
What is the factory-programmed I²C slave address for MAX1036LEKA-T?
The MAX1036LEKA-T has a fixed slave address of 1100100b (0x64) with R/W bit appended. This matches all MAX1036/MAX1037 variants and is distinct from MAX1038/MAX1039 (0x65). No external address pins exist, so multiple MAX1036LEKA-T devices require bus arbitration or separate I²C buses.
Does MAX1036LEKA-T support true differential input mode?
No. MAX1036LEKA-T supports only pseudo-differential input mode: one selected '+' input is sampled by the track/hold circuit, while the '–' input serves as a stable reference point. The '–' input must remain within ±0.5 LSB of GND during conversion and is not actively sampled - true differential (fully differential) operation is not implemented.
Can MAX1036LEKA-T operate with an external reference below 1V?
No. The MAX1036LEKA-T specification explicitly limits external reference voltage to 1.0V minimum up to VDD. Operation with VREF < 1V violates absolute maximum ratings and causes undefined conversion behavior, including code stuck-at or increased INL/DNL beyond ±2 LSB.
What is the maximum source impedance supported for accurate sampling on MAX1036LEKA-T?
For ≤0.5 LSB error, source impedance must be ≤1.5 kΩ when using the internal track/hold. Higher impedances require external RC filtering (e.g., 100 pF capacitor to GND) or a buffer amplifier. The acquisition time formula tACQ ≥ 6.25 × (RSOURCE + 2.5 kΩ) × 18 pF applies - exceeding this risks missing codes.
How does AutoShutdown™ affect the wake-up time of MAX1036LEKA-T?
AutoShutdown™ disables internal clock and reference buffers, resulting in a wake-up latency of approximately two internal clock cycles (~900 ns at 2.25 MHz) before the first conversion begins. This delay is deterministic and included in the specified 4.7 µs (external clock) or 6.1 µs (internal clock) conversion time - no additional firmware wait states are needed.
MAX1036LEKA-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:
- 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:
- -
MAX1036LEKA-T FAQ
1.How can I place an order for MAX1036LEKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1036LEKA-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 MAX1036LEKA-T reliable?
The price and inventory of MAX1036LEKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1036LEKA-T is usually 5 days.
3.What payment methods are accepted for MAX1036LEKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1036LEKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1036LEKA-T?
MAX1036LEKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1036LEKA-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 MAX1036LEKA-T?
For technical support, including MAX1036LEKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1036LEKA-T requirements.
6.How does Aetrix verify that MAX1036LEKA-T is sourced from the original manufacturer or authorized distributors?
All MAX1036LEKA-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 MAX1036LEKA-T meets industry standards.
7.What is the process for return or replacement of MAX1036LEKA-T?
All MAX1036LEKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1036LEKA-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 MAX1036LEKA-T part is unused and in its original packaging.
Return procedure for MAX1036LEKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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