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Analog Devices Inc./Maxim Integrated MAX9017AEKA
- Part No.:
- MAX9017AEKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-8
- Datasheet:
-
MAX9017AEKA.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:529
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Product details
Overview
MAX9017AEKA from Maxim Integrated is a dual, precision, nanopower comparator in an 8-pin SOT23 package, featuring Beyond-the-Rails™ inputs, a built-in 1.236V ±1% reference, push-pull output stage, and guaranteed operation down to 1.8V supply. It draws only 1.2µA supply current at 5V and delivers rail-to-rail output swing with ±6mA drive capability-ideal for 2-cell battery monitoring in portable medical instruments and telemetry systems.
For engineers reviewing the MAX9017AEKA datasheet, MAX9017AEKA pinout, MAX9017AEKA application, or MAX9017AEKA equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific use value, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The MAX9017AEKA integrates two independent comparators sharing a single precision internal reference (1.236V ±1%) connected to INA−, enabling compact threshold detection without external components. Its input common-mode range extends from VEE − 0.2V to VCC + 0.2V, supporting sensing at ground or supply rails.
The push-pull output stage eliminates need for external pull-up resistors and supports rail-to-rail switching into loads up to ±6mA. A fixed 4mV internal hysteresis prevents oscillation with slow-moving or noisy inputs, while crowbar-current-free switching minimizes supply glitches during transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - enables direct operation from single Li-ion or dual alkaline/NiMH cells without regulation. |
| Supply Current | 1.2µA at 5V - extends battery life beyond 1,500k hours in 2-cell alkaline systems (2000mAh). |
| Input Offset Voltage | <5mV (max) - ensures accurate threshold detection within tight voltage windows (e.g., battery end-of-life monitoring at 1.8V). |
| Reference Voltage | 1.236V ±1% - stable, factory-trimmed reference eliminates need for external voltage divider or precision reference IC. |
| Propagation Delay | 6µs (high-to-low), 11µs (low-to-high) at 5V - sufficient for DC/low-frequency monitoring (e.g., battery charge state, fault flag assertion). |
| Output Drive | ±6mA rail-to-rail - directly drives LEDs, logic inputs, or small MOSFET gates without buffering. |
| Hysteresis | 4mV internal - suppresses chatter on noisy or slowly varying signals (e.g., thermistor-based temperature thresholds). |
Pinout & Package
MAX9017AEKA is housed in an 8-pin SOT23 package (JEDEC MO-203AA), measuring 2.9mm × 1.6mm × 1.1mm, optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | REF/INA− | Internal 1.236V reference output; also internally connected to comparator A inverting input - used as fixed threshold for INA+. |
| 2 | INA− | Comparator A inverting input - externally accessible when REF function not used; allows flexible configuration. |
| 3 | INA+ | Comparator A noninverting input - accepts signals up to VCC + 0.2V (Beyond-the-Rails™), enabling high-side sensing. |
| 4 | VEE | Negative supply (GND) - common return for both comparators and reference. |
| 5 | N.C. | No connection - not internally bonded; must be left floating or grounded per layout best practices. |
| 6 | INB− | Comparator B inverting input - supports independent second threshold detection (e.g., overvoltage + undervoltage window). |
| 7 | VCC | Positive supply (1.8V–5.5V) - powers both comparators and internal reference; low quiescent draw minimizes load on battery. |
| 8 | OUTA | Comparator A push-pull output - sinks and sources current; drives logic or indicator directly without pull-up resistor. |
| - | OUTB | Comparator B push-pull output - identical functionality to OUTA; enables dual independent decisions in one footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ inputs | Accepts input voltages 200mV beyond supply rails - enables direct sensing of battery voltage or system supply without level-shifting. |
| Integrated 1.236V ±1% reference | Eliminates external reference IC or resistor divider - reduces BOM count and improves long-term stability vs. discrete solutions. |
| Crowbar-current-free switching | Minimizes supply current surges during output transitions - reduces need for large local decoupling capacitors in ultra-low-power designs. |
| 4mV internal hysteresis | Prevents false triggering on noise or slow edges - enables reliable operation in EMI-prone environments (e.g., motor-driven medical devices). |
| Rail-to-rail push-pull outputs | Drives CMOS/TTL logic directly - avoids pull-up resistors and associated power loss in always-on battery monitoring circuits. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low Power Threshold Detection |
|---|---|
Use Scenario: Monitoring voltage of dual alkaline/NiMH cells to detect end-of-life (1.8V/cell) and prevent deep discharge. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against internal 1.236V reference (scaled via external resistor) to assert low-battery flag and disable load. Use Value: 1.2µA supply current extends usable battery life by >1,500k hours vs. higher-quiescent alternatives; integrated reference ensures consistent trip point across temperature. | Use Scenario: Detecting critical thresholds in wearable health sensors (e.g., ECG lead-off, SpO₂ saturation drop). IC Role / Device Role / Timing Role: One comparator monitors analog sensor output; second validates reference stability or provides windowed detection. Use Value: Beyond-the-Rails™ inputs accept sensor signals referenced to battery rail; 4mV hysteresis rejects motion-induced noise without software filtering. |
| Medical Instrument Safety Interlock | Telemetry System Wake-Up Trigger |
Use Scenario: Enabling power to high-voltage therapy circuitry only when safety conditions (e.g., electrode contact, temperature) are met. IC Role / Device Role / Timing Role: Dual comparators validate two independent safety inputs (e.g., thermistor voltage and isolation monitor) before enabling gate driver. Use Value: Push-pull outputs drive logic-level enable lines directly; 1.8V operation ensures compatibility with low-voltage microcontrollers in battery-powered devices. | Use Scenario: Waking a low-power MCU from sleep mode when external event (e.g., door open, pressure change) exceeds threshold. IC Role / Device Role / Timing Role: Comparator output triggers MCU interrupt; internal reference provides stable wake-up threshold independent of supply decay. Use Value: 1.2µA quiescent current preserves battery during multi-week sleep cycles; fast 6µs propagation delay ensures responsive wake-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9017BEKA | Same package and pinout; uses 1.24V ±1.75% reference instead of 1.236V ±1%. | Suitable where tighter reference accuracy is not required (e.g., coarse battery OK/LOW indication). | Select MAX9017BEKA for cost-sensitive designs accepting wider reference tolerance; verify trip-point drift over temperature. |
| TLV7032DRYR | Push-pull dual comparator with 1.2V reference (±1.5%), 650nA supply current, but no Beyond-the-Rails™ inputs (CMVR = GND to VCC − 0.1V). | Applicable in regulated 1.8V–5.5V systems where input signals stay within rails (e.g., post-LDO sensor monitoring). | Choose TLV7032DRYR only if inputs remain strictly within supply rails; MAX9017AEKA remains superior for direct battery or supply-line sensing. |
Compared with MAX9017BEKA, MAX9017AEKA offers tighter reference accuracy (±1% vs. ±1.75%) critical for precision battery end-of-life detection; versus TLV7032DRYR, it uniquely supports Beyond-the-Rails™ inputs essential for unregulated battery monitoring without signal conditioning.
Availability
MAX9017AEKA is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low power threshold detection, and medical instrument safety interlock applications requiring stable component supply across extended production lifecycles.
Supply support for MAX9017AEKA 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 and mixed-signal ICs for demanding industrial, medical, and battery-powered applications.
The MAX9015–MAX9020 family was engineered specifically for nanopower, dual-comparator functions in space-constrained, battery-operated systems-emphasizing ultra-low ICC, rail-compatible operation, and integrated references to minimize external components.
FAQ
What is the reference voltage accuracy and temperature stability of MAX9017AEKA?
The MAX9017AEKA features a factory-trimmed 1.236V reference with ±1% initial accuracy over -40°C to +85°C and a typical temperature coefficient of 40ppm/°C. This ensures stable threshold setting across operating temperatures without external calibration-critical for reliable battery monitoring in MAX9017AEKA-based designs.
Does MAX9017AEKA support operation below 1.8V supply?
No-MAX9017AEKA is guaranteed to operate only down to 1.8V supply voltage, as specified in its Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 1.8V may result in undefined behavior, including failure to assert correct output states or reference instability. Always maintain VCC ≥ 1.8V for compliant MAX9017AEKA operation.
Can MAX9017AEKA drive a 10kΩ pull-up resistor on its output?
Yes-MAX9017AEKA's push-pull output can sink and source current, making external pull-up resistors unnecessary. However, if used with a 10kΩ pull-up to a higher voltage (e.g., 3.3V), the output will still switch correctly but will not exceed VCC. For level-shifting applications, consider open-drain alternatives like MAX9018AEKA instead of MAX9017AEKA.
What is the maximum load current MAX9017AEKA can drive while maintaining rail-to-rail output swing?
MAX9017AEKA maintains rail-to-rail output swing with loads up to ±6mA, as verified in Electrical Characteristics tables (e.g., VOH/VOL tested at ISOURCE/ISINK = 6mA). Driving heavier loads degrades output voltage margins-e.g., at 10mA sink, VOL rises above 450mV. For robust performance, keep steady-state loads ≤6mA in MAX9017AEKA designs.
How does the internal 4mV hysteresis in MAX9017AEKA improve noise immunity?
The internal 4mV hysteresis creates distinct upper (VTHR) and lower (VTHF) switching thresholds, preventing oscillation when input signals hover near the trip point due to noise or slow slew rates. This eliminates need for external hysteresis networks in MAX9017AEKA applications like battery voltage monitoring, where input ripple could otherwise cause false flag assertions.
MAX9017AEKA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-8
- Series:
- Beyond-the-Rails™
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 1000pA @ 5V
- Current - Input Bias (Max):
- 35mA
- Current - Output (Typ):
- 2.3µA
- Current - Quiescent (Max):
- -80dB PSRR
- CMRR, PSRR (Typ):
- 28µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C (TA)
- Operating Temperature:
- Automotive
- Grade:
- AEC-Q100
- Qualification:
- Surface Mount
- :
- SOT-23-8
MAX9017AEKA FAQ
1.How can I place an order for MAX9017AEKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9017AEKA 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 MAX9017AEKA reliable?
The price and inventory of MAX9017AEKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9017AEKA is usually 5 days.
3.What payment methods are accepted for MAX9017AEKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9017AEKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9017AEKA?
MAX9017AEKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9017AEKA 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 MAX9017AEKA?
For technical support, including MAX9017AEKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9017AEKA requirements.
6.How does Aetrix verify that MAX9017AEKA is sourced from the original manufacturer or authorized distributors?
All MAX9017AEKA 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 MAX9017AEKA meets industry standards.
7.What is the process for return or replacement of MAX9017AEKA?
All MAX9017AEKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX9017AEKA, 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 MAX9017AEKA part is unused and in its original packaging.
Return procedure for MAX9017AEKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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