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Analog Devices Inc./Maxim Integrated MAX4036EXK+T
- Part No.:
- MAX4036EXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX4036EXK+T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,435
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Product details
Overview
The MAX4036EXK+T from Maxim Integrated is a single-channel, ultra-low-power rail-to-rail operational amplifier optimized for single-cell Li⁺ or two-cell alkaline/NiMH battery-powered systems. It operates from +1.4V to +3.6V, consumes only 800nA supply current, features 1.0pA typical input bias current, 200μV input offset voltage, and rail-to-rail output swing within 25mV of the rails into 5kΩ loads - enabling precision signal conditioning in micropower sensor interfaces and portable medical instrumentation.
For engineers reviewing the MAX4036EXK+T datasheet, MAX4036EXK+T pinout, MAX4036EXK+T application, or MAX4036EXK+T equivalent, this page delivers verified specifications, package-validated pin functions, real-world use cases in battery-constrained systems, and confirmed alternative options for low-voltage, sub-1µA op amp selection.
Technical Context
The MAX4036EXK+T implements a BiCMOS input stage with rail-to-rail output architecture, supporting full common-mode input range from 0V to VDD − 0.4V at 1.4V supply. Its unity-gain stable design drives capacitive loads up to 5000pF without external compensation, and its no-phase-reversal input stage prevents erroneous output behavior during overdrive conditions.
Unlike the MAX4037/MAX4039 variants, the MAX4036EXK+T lacks an integrated voltage reference - it is a standalone op amp. Its 5-pin SC70 package places all critical signals (IN+, IN−, OUT, VDD, VSS) in a footprint optimized for space-constrained PCB layouts while maintaining thermal performance across −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.4V to +3.6V - enables direct operation from aging single-cell Li⁺ batteries without regulation. |
| Supply Current | 800nA per amplifier - reduces quiescent power to <1.2µW at 1.5V, extending battery life in always-on sensors. |
| Input Bias Current | 1.0pA (typ) - minimizes voltage error in high-impedance pH electrode or electrometer front-ends. |
| Input Offset Voltage | ±200µV (max) - supports 12-bit accuracy in 3V-span ADC interfaces without trimming. |
| Rail-to-Rail Output Swing | Within 25mV of rails into 5kΩ - preserves dynamic range in low-voltage analog signal chains. |
| Gain-Bandwidth Product | 4kHz - sufficient for DC-coupled sensor amplification and slow control loops (e.g., thermostat feedback). |
| Common-Mode Input Range | 0V to VDD − 0.4V at 1.4V - allows ground-referenced input sensing without level-shifting circuitry. |
Pinout & Package
The MAX4036EXK+T is housed in a 5-pin SC70 package (JEDEC MO-203AA), measuring 2.0mm × 2.0mm × 0.8mm, with gull-wing leads and RoHS-compliant matte-tin plating. The exposed die pad is not present in SC70; thermal dissipation relies on leadframe conduction.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Noninverting input - high-impedance node (1.0pA bias) for precision differential or single-ended sensing. |
| 2 | VSS | Negative supply - must be connected to system ground or lowest potential; serves as reference for all inputs/outputs. |
| 3 | IN− | Inverting input - used for closed-loop gain configuration; matched to IN+ for CMRR >70dB. |
| 4 | OUT | Amplifier output - rail-to-rail capable; drives 5kΩ loads to within 25mV of VSS/VDD at room temperature. |
| 5 | VDD | Positive supply - accepts 1.4V–3.6V; bypassing with 0.1µF ceramic capacitor to VSS is required for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 800nA supply current | Enables >10-year battery life in coin-cell-powered remote sensors (e.g., 220mAh CR2032 at 0.8µA avg). |
| Rail-to-rail output into 5kΩ | Delivers full 1.4V output span from 1.4V supply, maximizing ADC utilization without gain stages. |
| No phase reversal on overdrive | Prevents latch-up or false triggering in comparator-mode applications (e.g., battery undervoltage detection). |
| Unity-gain stable with 5000pF load | Eliminates need for isolation resistors when driving long traces or ADC input capacitance directly. |
| −40°C to +85°C operating range | Validated for industrial and automotive cabin environments without derating or thermal management. |
Applications
| Battery-Powered Sensor Nodes | Portable Medical Instrumentation |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) front-end amplifying amperometric current from enzyme electrode. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level current to mV-scale voltage for 12-bit ADC digitization. Use Value: 1.0pA input bias avoids significant offset error in 10MΩ transimpedance gain; 800nA current extends disposable sensor patch lifetime beyond 7 days. | Use Scenario: Handheld pulse oximeter measuring photodiode current under low-light conditions. IC Role / Device Role / Timing Role: Low-noise, low-drift preamplifier for I²C-connected ADC, operating from single AAA cell. Use Value: Rail-to-rail output ensures full 0–1.2V ADC input range utilization at 1.4V supply; ±200µV VOS enables <1% SpO₂ measurement error. |
| Micropower Thermostats | pH Meters |
Use Scenario: Wireless HVAC thermostat using thermistor bridge and RF SoC, powered by AA alkaline cells. IC Role / Device Role / Timing Role: Precision buffer for ratiometric thermistor voltage, interfacing to internal SAR ADC. Use Value: 0V-to-VDD−0.4V input range allows direct connection to thermistor divider without level shift; 800nA draw enables >5-year shelf life in sleep mode. | Use Scenario: Portable handheld pH meter with glass electrode and microcontroller-based readout. IC Role / Device Role / Timing Role: High-input-impedance buffer isolating fragile electrode signal from ADC input capacitance. Use Value: 1.0pA input bias prevents electrode polarization drift; rail-to-rail output accommodates wide pH range (0–14) mapped to 0–3V ADC span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4036AAXK+T | Same core op amp but rated for −40°C to +125°C junction temperature; identical SC70-5 package and pinout. | Suitable for under-hood automotive or industrial control environments where extended temperature stability is mandatory. | Select MAX4036AAXK+T when operating ambient exceeds +85°C or when AEC-Q200 stress testing is required. |
| TLV8801IDCKR | TI's 420nA op amp with 1.2V min supply, 150µV VOS, and 1.5pA IB - lower current but narrower input range (VSS to VDD−0.1V). | Better for ultra-long-life coin-cell devices; less suitable for ground-sensing applications due to limited common-mode range. | Choose TLV8801IDCKR when supply current is the dominant constraint and input common-mode range above VSS is not required. |
Compared with MAX4036AAXK+T, the MAX4036EXK+T offers identical electrical performance at lower cost and qualification scope, while the TLV8801IDCKR trades common-mode flexibility for further reduced quiescent current - making each optimal for distinct low-power design priorities.
Availability
The MAX4036EXK+T is available at Aetrix Electronics and suitable for battery-powered sensor nodes, portable medical instrumentation, micropower thermostats, and pH meters requiring stable component supply across industrial and consumer production volumes.
Supply support for MAX4036EXK+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 MAX4036 series belongs to Maxim's micropower op amp product line, engineered specifically for ultra-low-voltage, ultra-low-current signal conditioning in energy-harvesting and battery-constrained systems.
FAQ
What is the minimum supply voltage for reliable operation of the MAX4036EXK+T?
The MAX4036EXK+T is guaranteed to operate down to +1.4V supply voltage, with full specification compliance including rail-to-rail output swing and 800nA supply current. At 1.4V, the input common-mode range extends from 0V to VDD − 0.4V (i.e., 0V to 1.0V), and output swing remains within 100mV of the rails into 5kΩ. This makes the MAX4036EXK+T uniquely suited for direct connection to single-cell lithium-ion or lithium-polymer batteries throughout their discharge curve.
Does the MAX4036EXK+T include an integrated voltage reference?
No, the MAX4036EXK+T does not include an integrated voltage reference. It is a standalone single op amp. Reference functionality is present only in the MAX4037 (single op amp + reference) and MAX4039 (dual op amp + reference) variants. The MAX4036EXK+T pinout contains no REF pin - its 5-pin SC70 package allocates pins exclusively to IN+, VSS, IN−, OUT, and VDD.
Can the MAX4036EXK+T drive a 10nF capacitive load stably?
Yes, the MAX4036EXK+T is unity-gain stable with capacitive loads up to 5000pF (5nF) without external compensation. Its internal compensation ensures phase margin ≥90° and no sustained oscillations under these conditions. For loads exceeding 5nF, an isolation resistor (e.g., 10Ω–100Ω) between OUT and the load is recommended to maintain stability, though this will reduce effective output voltage swing due to voltage division.
What is the input bias current specification of the MAX4036EXK+T over temperature?
The MAX4036EXK+T specifies ±100pA maximum input bias current over the full −40°C to +85°C operating range, with typical performance at +25°C being ±1.0pA. This wide-spec limit ensures predictable high-impedance interface behavior in thermistor, pH electrode, or photodiode applications across environmental extremes, while the ultra-low typical value enables precision DC-coupled designs at room temperature.
Is the MAX4036EXK+T pin-compatible with other devices in the MAX4036–MAX4039 family?
No - the MAX4036EXK+T is not pin-compatible with MAX4037, MAX4038, or MAX4039 variants. It uses a 5-pin SC70 package with dedicated IN+, IN−, OUT, VDD, and VSS pins. In contrast, MAX4037 uses a 6-pin SOT23 (adding REF), MAX4038 uses 8-pin µMAX/TDFN (dual op amp, no REF), and MAX4039 uses 9- or 10-pin packages (dual op amp + REF). Pin count, function allocation, and physical footprint differ across the family.
MAX4036EXK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.004V/µs
- Gain Bandwidth Product:
- 4 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 900nA
- Current - Output / Channel:
- 13 mA
- Voltage - Supply Span (Min):
- 1.4 V
- Voltage - Supply Span (Max):
- 3.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX4036EXK+T FAQ
1.How can I place an order for MAX4036EXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4036EXK+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 MAX4036EXK+T reliable?
The price and inventory of MAX4036EXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4036EXK+T is usually 5 days.
3.What payment methods are accepted for MAX4036EXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4036EXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4036EXK+T?
MAX4036EXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4036EXK+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 MAX4036EXK+T?
For technical support, including MAX4036EXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4036EXK+T requirements.
6.How does Aetrix verify that MAX4036EXK+T is sourced from the original manufacturer or authorized distributors?
All MAX4036EXK+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 MAX4036EXK+T meets industry standards.
7.What is the process for return or replacement of MAX4036EXK+T?
All MAX4036EXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4036EXK+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 MAX4036EXK+T part is unused and in its original packaging.
Return procedure for MAX4036EXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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