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Analog Devices Inc./Maxim Integrated MAX40002AUK02+T
- Part No.:
- MAX40002AUK02+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX40002AUK02+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,493
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Product details
Overview
MAX40002AUK02+T from Analog Devices is a nanoPower, open-drain, noninverting comparator with factory-trimmed 0.2V internal reference voltage, 500nA supply current, and operation from 1.7V to 5.5V supply. It features 0.1V–5.5V input voltage range independent of supply, 8mV typical internal hysteresis, and is packaged in a 5-pin SOT23 for space-constrained battery-powered mobile devices.
For engineers reviewing the MAX40002AUK02+T datasheet, MAX40002AUK02+T pinout, MAX40002AUK02+T application, or MAX40002AUK02+T equivalent, key selection criteria include ultra-low quiescent current, internal 0.2V reference accuracy over –40°C to +125°C, open-drain output compatibility with mixed-voltage logic, and SOT23 footprint suitability for portable instrumentation and medical wearables.
Technical Context
The MAX40002AUK02+T implements a BiCMOS input stage enabling rail-to-rail input operation beyond VCC (up to +6V absolute max), with high-impedance inputs even when powered down (VCC = 0V). Its internal 0.2V reference is temperature-compensated and integrated into the comparator's trip-point architecture.
This device uses an open-drain output stage requiring external pullup, supporting interface to logic rails up to 5.5V independent of VCC. Internal 8mV hysteresis ensures noise immunity without external components, and RF filtering enhances robustness in noisy portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7V to 5.5V - supports direct connection to common digital rails (1.8V, 2.5V, 3.3V, 5V) without level-shifting. |
| Quiescent Supply Current | 0.5µA typical at –40°C to +85°C - enables multi-year battery life in always-on monitoring circuits. |
| Internal Reference Voltage | 0.2V ±12mV at +25°C, ±26mV over –40°C to +125°C - provides precise low-threshold detection for battery voltage monitoring or sensor wake-up. |
| Input Voltage Range | 0.1V to 5.5V, independent of supply - allows direct sensing of sub-1V signals (e.g., thermistor, current-sense amplifier output) without attenuation. |
| Propagation Delay | 9µs typical (high-to-low), 25µs typical (low-to-high, 100mV overdrive) - sufficient for slow-event detection (e.g., lid open/close, charge termination) while minimizing power. |
| Operating Temperature | –40°C to +125°C - qualified for automotive cabin, industrial handheld, and extended-life medical applications. |
| Output Type | Open-drain - enables wired-OR configuration, mixed-voltage interfacing (e.g., 1.8V comparator driving 3.3V MCU GPIO), and flexible pullup placement. |
Pinout & Package
MAX40002AUK02+T is supplied in a RoHS-compliant 5-pin SOT23 package (package code U5+1), measuring 2.9mm × 1.6mm × 1.1mm, with standard JEDEC MO-178AC outline and thermal resistance θJA = 255.9°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC/REF | Supply voltage input (1.7V–5.5V) and internal reference node - must be bypassed with 0.1µF capacitor to GND for stable operation. |
| 2 | GND | Analog ground reference - shared return path for supply, reference, and signal inputs; requires low-impedance PCB connection. |
| 3 | N.C. | No internal connection - left unconnected on PCB; no routing or thermal pad required. |
| 4 | IN | Noninverting input - asserts high output when input exceeds 0.2V reference; supports 0.1V–5.5V common-mode range. |
| 5 | OUT | Open-drain output - sinks current only; requires external pullup resistor (e.g., 100kΩ to 3.3V) for logic-high assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA operating current | Extends battery runtime in always-on threshold detection (e.g., battery fuel gauging, wearable motion wake-up). |
| Factory-trimmed 0.2V internal reference | Eliminates external reference IC and associated BOM cost, layout area, and calibration effort for low-VTH applications. |
| Input voltage range beyond supply (0.1V to 5.5V) | Enables direct sensing of signals exceeding VCC (e.g., 3.3V sensor output on 1.8V system) without resistive dividers or level shifters. |
| 8mV internal hysteresis | Prevents output oscillation due to noise on slow-moving inputs (e.g., thermistor-based temperature monitoring), removing need for external feedback. |
| High-impedance inputs at VCC = 0V | Allows safe "hot insertion" or partial system power-down without signal loading or back-powering risk in modular designs. |
Applications
| Battery Voltage Monitor | Low-Power Sensor Wake-Up |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during deep sleep to trigger wake-up before undervoltage lockout. IC Role / Device Role / Timing Role: Noninverting comparator compares cell voltage against 0.2V reference scaled via precision resistor divider; open-drain output drives MCU interrupt pin. Use Value: 500nA quiescent current minimizes sleep-mode drain; 0.2V reference enables accurate <1V detection thresholds without external reference drift. | Use Scenario: Detecting motion-induced voltage from piezoelectric sensor to wake wearable health monitor from standby. IC Role / Device Role / Timing Role: Noninverting comparator senses sensor output crossing 0.2V threshold; output pulses MCU GPIO to initiate data acquisition. Use Value: Rail-to-rail input accepts µV–mV sensor outputs directly; internal hysteresis rejects EMI-induced false triggers in noisy body-worn environments. |
| USB-C Port Detection | Medical Pulse Oximeter Threshold |
Use Scenario: Identifying USB-C attachment by detecting CC line voltage level in portable chargers or accessories. IC Role / Device Role / Timing Role: Noninverting comparator monitors CC pin against 0.2V reference; open-drain output interfaces to 3.3V microcontroller I/O with pullup. Use Value: 1.7V–5.5V supply range matches USB-C VCONN/VBUS domains; SOT23 footprint fits tight connector-side layouts. | Use Scenario: Triggering LED driver activation when photodiode signal exceeds ambient-light-corrected baseline in portable pulse oximeters. IC Role / Device Role / Timing Role: Noninverting comparator compares transimpedance-amplifier output to 0.2V internal reference; output controls LED timing sequencer. Use Value: –40°C to +125°C rating ensures reliability across clinical and home-use temperature ranges; low input bias current (<30nA) prevents signal corruption in high-impedance optical paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDBVR | 0.4V internal reference, 320nA supply current, SC70-5 package (2.0mm × 1.25mm), push-pull output | Requires external pullup for wired-OR; smaller footprint but no 0.2V reference option | Select when lower supply current is critical and 0.4V threshold suffices; verify push-pull compatibility with host logic. |
| MAX40012AUK02+T | Same 0.2V reference, open-drain, noninverting, but in 4-bump WLP (0.73mm × 0.73mm); 500nA current, same temp range | Ultra-miniature footprint for highest-density layouts; no leaded package for rework-friendly assembly | Select when board space is paramount and SMT rework capability is not required; WLP demands fine-pitch assembly control. |
Compared with TLV3691IDBVR and MAX40012AUK02+T, the MAX40002AUK02+T uniquely balances SOT23 manufacturability, 0.2V precision threshold, and open-drain flexibility-making it optimal for cost-sensitive, medium-density portable designs requiring field-serviceable assembly.
Availability
MAX40002AUK02+T is available at Aetrix Electronics and suitable for battery voltage monitoring, portable medical sensor interfaces, and USB-C accessory detection requiring stable component supply across automotive and industrial temperature grades.
Supply support for MAX40002AUK02+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX40002–MAX40005 family was designed specifically for ultra-low-power, space-constrained portable electronics-including smartphones, wearables, and handheld medical devices-where nanoscale packaging and sub-µA operation are mandatory.
FAQ
What is the internal reference voltage tolerance of MAX40002AUK02+T over temperature?
The MAX40002AUK02+T features a factory-trimmed 0.2V internal reference with ±12mV tolerance at +25°C, widening to ±26mV over the full –40°C to +125°C operating range. This specification is guaranteed per the Electrical Characteristics table in the official Analog Devices datasheet (Rev 9, April 2022), ensuring reliable low-threshold detection in automotive and industrial environments where MAX40002AUK02+T is deployed.
Can MAX40002AUK02+T operate with input voltages higher than its supply voltage?
Yes, MAX40002AUK02+T supports input voltages from 0.1V to 5.5V independent of VCC, including values exceeding the supply rail-up to the Absolute Maximum Rating of +6V at the IN pin. This capability stems from its BiCMOS input architecture without ESD diode clamps to VCC, enabling direct sensing of higher-voltage signals (e.g., 3.3V sensor outputs on a 1.8V system) without external level-shifting circuitry when using MAX40002AUK02+T.
Does MAX40002AUK02+T require an external pullup resistor on its output?
Yes, MAX40002AUK02+T has an open-drain output and requires an external pullup resistor to establish a valid logic-high level. A typical value is 100kΩ connected between OUT (pin 5) and a pullup voltage up to 5.5V. This configuration enables wired-OR logic, mixed-voltage interfacing, and compatibility with microcontroller GPIOs that lack internal pullups-key design advantages confirmed in the MAX40002AUK02+T Pin Description and Typical Operating Circuits sections.
What is the propagation delay of MAX40002AUK02+T under typical conditions?
Under typical conditions (VCC = 3.3V, 100mV input overdrive, CL = 20pF), MAX40002AUK02+T exhibits 9µs propagation delay for high-to-low transitions and 25µs for low-to-high transitions. These values are specified in the Electrical Characteristics table and validated across –40°C to +125°C, making MAX40002AUK02+T suitable for slow-event detection such as battery charge termination or environmental threshold crossing where speed is secondary to power efficiency.
Is MAX40002AUK02+T pin-compatible with other devices in the MAX40002–MAX40005 family?
Yes, all SOT23-packaged variants in the MAX40002–MAX40005 family-including MAX40002AUK02+T, MAX40002AUK05+T, and MAX40005AUK02+T-share identical 5-pin SOT23 pinouts (VCC/REF, GND, N.C., IN, OUT). This allows drop-in replacement for different reference voltages or input polarities without PCB layout changes, provided the application's functional requirements (e.g., open-drain vs. push-pull, noninverting vs. inverting) are matched when selecting MAX40002AUK02+T or alternatives.
MAX40002AUK02+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.7V ~ 5.5V
- :
- -
- Voltage - Input Offset (Max):
- 0.03µA
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1.1µA
- Current - Quiescent (Max):
- 46dB PSRR (Min)
- CMRR, PSRR (Typ):
- 55µs (Typ)
- Propagation Delay (Max):
- 8mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-5
MAX40002AUK02+T FAQ
1.How can I place an order for MAX40002AUK02+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40002AUK02+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 MAX40002AUK02+T reliable?
The price and inventory of MAX40002AUK02+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40002AUK02+T is usually 5 days.
3.What payment methods are accepted for MAX40002AUK02+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40002AUK02+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40002AUK02+T?
MAX40002AUK02+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40002AUK02+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 MAX40002AUK02+T?
For technical support, including MAX40002AUK02+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40002AUK02+T requirements.
6.How does Aetrix verify that MAX40002AUK02+T is sourced from the original manufacturer or authorized distributors?
All MAX40002AUK02+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 MAX40002AUK02+T meets industry standards.
7.What is the process for return or replacement of MAX40002AUK02+T?
All MAX40002AUK02+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX40002AUK02+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 MAX40002AUK02+T part is unused and in its original packaging.
Return procedure for MAX40002AUK02+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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