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Analog Devices Inc./Maxim Integrated MAX9017AEKA-T
- Part No.:
- MAX9017AEKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-8
- Datasheet:
-
MAX9017AEKA-T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,551
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Product details
Overview
The MAX9017AEKA-T from Maxim Integrated is a dual nanoPower comparator with integrated 1.236V ±1% precision reference, Beyond-the-Rails™ inputs (VEE −0.2V to VCC +0.2V), push-pull output stage, and guaranteed operation from 1.8V to 5.5V supply. It draws only 1.2μA at 1.8V, features 4mV internal hysteresis, and delivers rail-to-rail output swing up to ±6mA-ideal for 2-cell battery monitoring in portable medical instruments and telemetry systems.
For engineers reviewing the MAX9017AEKA-T datasheet, MAX9017AEKA-T pinout, MAX9017AEKA-T application, or MAX9017AEKA-T equivalent, key selection criteria include ultra-low quiescent current (1.2μA), A-grade reference accuracy (±1%), push-pull output drive capability, input common-mode range extending beyond supply rails, and SOT23-8 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX9017AEKA-T integrates two independent comparators sharing a single precision bandgap reference (1.236V ±1% at +25°C, 40ppm/°C TC). Its input stage supports differential signals across the full Beyond-the-Rails™ range, enabling direct sensing at ground or supply lines without level-shifting circuitry.
The push-pull output stage eliminates external pull-up resistors and enables rail-to-rail switching into loads up to 6mA while suppressing supply-current surges during transitions-reducing power-supply noise and eliminating need for large decoupling capacitors in ultra-low-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - supports direct operation from 2-cell alkaline (1.8V end-of-life) or Li-ion (2.9V min) batteries without regulation. |
| Supply Current (TA = +25°C) | 1.2μA at 1.8V - enables >1500k hours (171 years) of continuous operation on a 2000mAh AA battery pair. |
| Input Common-Mode Range | VEE −0.2V to VCC +0.2V - allows direct interface to sensors referenced to ground or VCC without external biasing. |
| Reference Voltage | 1.236V ±1% (A grade) - provides stable, factory-trimmed threshold for precision window or overvoltage detection. |
| Output Drive Capability | ±6mA rail-to-rail - drives LEDs, logic inputs, or small MOSFET gates directly without external buffers. |
| Propagation Delay | 6–11μs (VCC = 5V/1.8V) - sufficient for battery voltage monitoring and slow analog signal discrimination. |
| Hysteresis | 4mV internal - prevents chatter on noisy or slowly varying inputs like thermistor or battery voltage ramps. |
Pinout & Package
MAX9017AEKA-T is housed in an 8-pin SOT23 package (package code T833+2, outline 21-0078), optimized for high-density portable PCBs. Pin 1 is REF (1.236V reference output), pin 2 is INA− (Comparator A inverting input), pin 3 is INA+ (Comparator A noninverting input), pin 4 is VEE (ground), pins 5 and 8 are NC (no connection), pin 6 is OUTA (Comparator A push-pull output), pin 7 is VCC (positive supply), and pin 8 is also VCC (dual supply connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF) | Reference output | Provides 1.236V ±1% precision voltage for comparator thresholds; can source/sink ≤100nA. |
| 2 (INA−) | Comparator A inverting input | Accepts input signals from VEE −0.2V to VCC +0.2V; internally tied to REF in MAX9017/MAX9018 variants. |
| 3 (INA+) | Comparator A noninverting input | Primary signal input for Comparator A; same rail-to-rail common-mode range as INA−. |
| 4 (VEE) | Negative supply / ground | System ground reference; all internal circuits referenced to this node. |
| 5, 8 (NC) | No connection | Not bonded internally; must remain unconnected per datasheet to avoid parasitic coupling. |
| 6 (OUTA) | Comparator A output | CMOS push-pull stage; sinks and sources up to ±6mA; no external pull-up required. |
| 7 (VCC) | Positive supply | Supplies both comparators and reference; operates down to 1.8V with full specification compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ inputs | Enables direct sensing of signals below ground or above VCC-critical for battery cell monitoring at end-of-life voltage. |
| Ultra-low 1.2μA supply current | Extends battery life by >10× vs. typical micropower comparators; reduces thermal load in sealed enclosures. |
| Integrated 1.236V ±1% reference | Eliminates external voltage reference IC and associated layout area, BOM count, and calibration effort. |
| Crowbar-current-free switching | Minimizes supply transients during output transitions-removes need for large local bypass capacitors. |
| 4mV internal hysteresis | Guarantees clean, chatter-free output switching on low-slew-rate inputs like thermistors or battery voltage decay. |
Applications
| 2-Cell Battery Monitoring | Medical Instrument Threshold Detection |
|---|---|
Use Scenario: Real-time monitoring of alkaline or NiMH 2-cell battery voltage during discharge to trigger low-battery warnings before system shutdown. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against 1.236V reference (via resistor divider) to detect under-voltage and over-voltage conditions. Use Value: Enables precise, low-power battery health assessment with no external reference or support components-reducing solution size and cost. | Use Scenario: Detecting physiological signal thresholds (e.g., ECG R-wave amplitude, pulse oximeter saturation drop) in portable diagnostic devices. IC Role / Device Role / Timing Role: Comparator A monitors sensor output against fixed reference; Comparator B implements window detection for valid signal range. Use Value: Sub-μA quiescent current preserves battery life in always-on patient monitors; Beyond-the-Rails™ inputs accept sensor outputs referenced to system ground or supply. |
| Telemetry System Wake-Up Trigger | Automotive Cabin Sensor Interface |
Use Scenario: Waking a microcontroller from deep sleep when external sensor data (e.g., temperature, humidity) crosses preset thresholds. IC Role / Device Role / Timing Role: Comparator B triggers wake-up interrupt via push-pull output driving MCU's external interrupt pin. Use Value: Eliminates need for external pull-up resistors and reduces total system standby current to <2μA-extending field-deployed device lifetime. | Use Scenario: Monitoring cabin ambient light or seat occupancy sensor outputs in automotive infotainment modules. IC Role / Device Role / Timing Role: Dual comparator performs light-level classification (dark/mid/bright) and seat belt status detection using shared reference. Use Value: AEC-Q100 Grade 3 qualification ensures reliability in automotive temperature range (−40°C to +85°C); 1.8V operation supports modern low-voltage ECUs. |
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-T | Uses 1.24V ±1.75% reference instead of 1.236V ±1%; higher initial tolerance and wider tempco (4.5% vs. 2.5% total error). | Suitable where absolute threshold accuracy is less critical than cost-e.g., generic battery presence detection. | Select MAX9017BEKA-T only if reference tolerance ≥±1.75% is acceptable; otherwise MAX9017AEKA-T ensures tighter trip-point control. |
| TLV3692IDR | Single-supply, rail-to-rail input/output comparator with 600nA supply current but no integrated reference; requires external voltage divider or reference. | Preferred when ultra-low current (<1μA) dominates design priority and reference can be sourced externally or derived from system rail. | Choose TLV3692IDR only if board space permits external reference circuitry and system-level reference sharing is feasible. |
Compared with MAX9017BEKA-T, the MAX9017AEKA-T offers superior reference accuracy (±1% vs. ±1.75%) critical for precision battery cutoff; versus TLV3692IDR, it trades slightly higher current (1.2μA vs. 0.6μA) for integrated reference and reduced BOM count-making it optimal for compact, self-contained threshold detection.
Availability
MAX9017AEKA-T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, portable medical instrumentation, telemetry wake-up triggers, and automotive cabin sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for MAX9017AEKA-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 and mixed-signal ICs for power, sensing, and signal conditioning in battery-powered and industrial systems.
The MAX9015–MAX9020 family targets ultra-low-power threshold detection applications-specifically engineered to replace discrete comparator + reference solutions in space- and energy-constrained portable electronics.
FAQ
What is the reference voltage accuracy and temperature stability of the MAX9017AEKA-T?
The MAX9017AEKA-T features an on-board 1.236V reference with ±1% accuracy at +25°C and ±2.5% total error over −40°C to +85°C. Its temperature coefficient is 40ppm/°C, ensuring stable threshold performance across automotive and industrial operating ranges without external calibration.
Can the MAX9017AEKA-T operate from a single 1.8V supply?
Yes, the MAX9017AEKA-T is fully specified to operate from 1.8V to 5.5V. At 1.8V, it maintains 1.2μA supply current, 4mV hysteresis, and functional Beyond-the-Rails™ inputs-enabling direct use with depleted 2-cell alkaline batteries (1.8V end-of-life) without voltage boosting.
What is the maximum load the MAX9017AEKA-T output can drive?
The MAX9017AEKA-T push-pull output drives ±6mA while maintaining rail-to-rail swing. At 5V supply and 6mA sink/source, VOL is ≤450mV and VOH is ≤450mV above rail-sufficient to directly interface with CMOS logic, drive small LEDs, or switch low-threshold MOSFETs without external buffers.
How does the Beyond-the-Rails™ input feature benefit system design?
The Beyond-the-Rails™ input range (VEE −0.2V to VCC +0.2V) allows the MAX9017AEKA-T to monitor signals referenced to ground (e.g., battery negative terminal) or above VCC (e.g., unregulated sensor outputs) without level-shifting resistors or op-amp buffers-reducing component count, PCB area, and power loss in portable systems.
Is the MAX9017AEKA-T pin-compatible with other devices in the MAX9015–MAX9020 family?
Yes, all MAX9015–MAX9020 devices share identical 8-pin SOT23 pinouts. The MAX9017AEKA-T matches MAX9017BEKA-T, MAX9018 variants, and MAX9019/MAX9020 in physical layout-allowing reference design reuse and simplified BOM management across precision vs. cost-optimized versions.
MAX9017AEKA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-8
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 0.001µA @ 5V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 2.8µA
- Current - Quiescent (Max):
- 80dB PSRR
- CMRR, PSRR (Typ):
- 28µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-8
MAX9017AEKA-T FAQ
1.How can I place an order for MAX9017AEKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9017AEKA-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 MAX9017AEKA-T reliable?
The price and inventory of MAX9017AEKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9017AEKA-T is usually 5 days.
3.What payment methods are accepted for MAX9017AEKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9017AEKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9017AEKA-T?
MAX9017AEKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9017AEKA-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 MAX9017AEKA-T?
For technical support, including MAX9017AEKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9017AEKA-T requirements.
6.How does Aetrix verify that MAX9017AEKA-T is sourced from the original manufacturer or authorized distributors?
All MAX9017AEKA-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 MAX9017AEKA-T meets industry standards.
7.What is the process for return or replacement of MAX9017AEKA-T?
All MAX9017AEKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9017AEKA-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 MAX9017AEKA-T part is unused and in its original packaging.
Return procedure for MAX9017AEKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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