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Analog Devices Inc./Maxim Integrated MAX40002ANS12+T
- Part No.:
- MAX40002ANS12+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 4-XFBGA, WLBGA
- Datasheet:
-
MAX40002ANS12+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 4WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,847
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Product details
Overview
The MAX40002ANS12+T from Analog Devices is a nanoPower, noninverting-input comparator with integrated 1.222V factory-trimmed reference voltage, open-drain output, and ultra-low 500nA supply current. It operates from 1.7V to 5.5V, supports input voltages from 0.1V to 5.5V (exceeding VCC), and is specified over –40°C to +125°C for automotive-grade reliability in space-constrained battery-powered systems.
For engineers reviewing the MAX40002ANS12+T datasheet, MAX40002ANS12+T pinout, MAX40002ANS12+T application, or MAX40002ANS12+T equivalent, this device is selected for ultra-low-power threshold detection where board area, supply headroom, and thermal robustness are critical - especially in portable medical sensors, wearable health monitors, and low-voltage IoT edge nodes.
Technical Context
This comparator uses a BiCMOS process with an innovative input-stage architecture enabling rail-to-rail input operation beyond VCC (up to +6V absolute max), while maintaining high input impedance even when powered down (VCC = 0V). Its internal 1.222V reference is temperature-compensated and contributes to 45dB PSRR with external reference mode.
The open-drain output supports flexible logic interfacing up to 5.5V pull-up voltage, and internal 8mV hysteresis ensures noise immunity without external components. Propagation delay is 9µs (high-to-low) and 25µs (low-to-high at 100mV overdrive), with rise/fall times of 800ns/200ns for push-pull variants - though MAX40002ANS12+T uses open-drain only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7V to 5.5V - enables direct use with 1.8V/2.5V/3.3V/5V microcontroller rails without level-shifting. |
| Quiescent Current | 500nA typical - extends battery life in always-on monitoring circuits (e.g., ECG lead-off detection). |
| Internal Reference | 1.222V ±22mV (–40°C to +125°C) - eliminates external reference IC and associated PCB area/cost. |
| Input Voltage Range | 0.1V to 5.5V independent of VCC - allows sensing signals above supply (e.g., 3.3V sensor on 1.8V system). |
| Propagation Delay | 9µs (high-to-low), 25µs (low-to-high at 100mV overdrive) - sufficient for slow-varying physiological or environmental thresholds. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial sensor nodes, and portable medical devices. |
| Package | 4-bump WLP, 0.73mm × 0.73mm - occupies <0.53mm² footprint, smaller than two 0402 passives. |
Pinout & Package
MAX40002ANS12+T is supplied in a 4-bump wafer-level package (WLP) with 0.35mm pitch and 0.73mm × 0.73mm body size. The package has no exposed pad and is RoHS-compliant (+ suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | OUT | Open-drain output requiring external pull-up; compatible with logic supplies up to 5.5V. |
| A2 | IN | Noninverting input - output asserts high when IN > VREF_INT (1.222V). |
| B1 | VCC/REF | Single pin serving as both supply input and external reference input; bypass with 0.1µF capacitor. |
| B2 | GND | Analog ground reference; must be connected directly to low-impedance system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input beyond VCC | Supports inputs up to +6V regardless of 1.7V–5.5V supply - enables direct sensing of higher-voltage analog signals. |
| Zero-power input impedance | Maintains high-Z input even with VCC = 0V - permits safe "hot insertion" and power-gating schemes in multi-rail systems. |
| Integrated 1.222V reference | Factory-trimmed, temperature-compensated reference eliminates external components and layout sensitivity. |
| RF-immune internal filtering | On-chip filtering suppresses RF interference from cellular/WiFi bands - reduces need for external shielding or ferrites. |
| Ultra-small WLP footprint | 0.73mm × 0.73mm area saves >70% board space vs. SOT23 - critical for hearing aids, smart patches, and miniaturized wearables. |
Applications
| Portable Medical Sensors | Low-Voltage Battery Monitoring |
|---|---|
Use Scenario: Detecting electrode detachment in wearable ECG patches by monitoring DC bias shift across skin-electrode interface. IC Role / Device Role / Timing Role: Threshold comparator comparing sensed bias against 1.222V reference to trigger alert when signal drops below safe level. Use Value: 500nA quiescent current enables multi-week operation on coin-cell; 0.73mm WLP fits within 3mm-diameter sensor module. |
Use Scenario: Monitoring Li-ion cell voltage during deep-sleep mode in Bluetooth trackers to prevent over-discharge. IC Role / Device Role / Timing Role: Noninverting comparator asserting wake-up signal when cell voltage rises above 3.0V (using external resistor divider scaling 1.222V reference). Use Value: Input range extends to 5.5V allows direct connection to 4.2V full-charge cell; no external reference needed. |
| Automotive Cabin Sensors | IoT Environmental Threshold Detection |
Use Scenario: Occupancy detection via thermopile output in vehicle seat sensors, triggering HVAC adjustment. IC Role / Device Role / Timing Role: Comparator detecting small ΔT-induced voltage changes against 1.222V reference in cold-junction-compensated circuit. Use Value: –40°C to +125°C rating ensures reliability in dashboard mounting; 8mV hysteresis prevents false triggers from thermal noise. |
Use Scenario: Humidity threshold alarm in smart agriculture node using capacitive RH sensor with ratiometric output. IC Role / Device Role / Timing Role: Noninverting comparator comparing scaled sensor output to 1.222V reference to activate irrigation control at 60% RH. Use Value: 1.7V minimum supply enables operation from energy-harvesting sources (e.g., solar + supercap); WLP withstands reflow and vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDCKR | 0.9V internal reference, 320nA IQ, SOT23-5 package (2.9mm × 1.6mm) | Larger footprint; lower supply current but no >VCC input capability | Choose when lowest possible IQ is primary and board space is less constrained. |
| MAX40012ANS09+T | 0.9V internal reference, same WLP package, noninverting open-drain | Different reference voltage requires redesign of threshold network | Choose when 0.9V trip point better matches sensor output range or existing BOM. |
Compared with TLV3691IDCKR, MAX40002ANS12+T offers superior input voltage flexibility (0.1V–5.5V independent of VCC) and 30% smaller footprint, while MAX40012ANS09+T shares identical form factor and architecture but shifts trip point - making it a drop-in layout replacement only if reference voltage tolerance permits.
Availability
MAX40002ANS12+T is available at Aetrix Electronics and suitable for portable medical devices, automotive cabin sensors, and low-voltage battery monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX40002ANS12+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 - delivering nanoPower operation, sub-millimeter packaging, and robust performance across automotive temperature ranges.
FAQ
What is the exact internal reference voltage of MAX40002ANS12+T?
The MAX40002ANS12+T features a factory-trimmed internal reference voltage of 1.222V, with tolerance of ±22mV over the full –40°C to +125°C operating range. This value is confirmed in the Electrical Characteristics table (page 4 of the datasheet) under "Switching Threshold Voltage" for part numbers ending in "12+". The MAX40002ANS12+T does not support external reference mode - VCC/REF serves only as supply input.
Does MAX40002ANS12+T support input voltages higher than its supply voltage?
Yes, MAX40002ANS12+T supports input voltages from 0.1V to 5.5V independent of VCC, including values exceeding VCC (up to +6V absolute maximum). This is enabled by its specialized input-stage architecture without ESD diode clamps to VCC - a key differentiator versus conventional comparators. The MAX40002ANS12+T datasheet explicitly confirms this in the Absolute Maximum Ratings and Detailed Description sections.
What package type and dimensions does MAX40002ANS12+T use?
MAX40002ANS12+T uses a 4-bump wafer-level package (WLP) with outline number 21-100103, measuring 0.73mm × 0.73mm with 0.35mm bump pitch. It has no leads or gull-wing pins - connections are made via solder bumps on the bottom surface. Land pattern information is provided in Application Note AN1891, and the package is RoHS-compliant (indicated by the "+" suffix).
Can MAX40002ANS12+T operate with a 1.7V supply and still meet specifications?
Yes, MAX40002ANS12+T is fully specified from 1.7V to 5.5V supply voltage. At 1.7V, it maintains 500nA typical supply current, 0.1V–5.5V input range, and 1.222V reference accuracy (±22mV over temperature). Propagation delay increases slightly (e.g., 25µs low-to-high at 100mV overdrive), but all parameters remain within guaranteed limits per the Electrical Characteristics table.
Is MAX40002ANS12+T pin-compatible with other members of the MAX40002–MAX40005 family?
Yes, all WLP variants in the MAX40002–MAX40005 family - including MAX40002ANS12+T - share identical 4-bump pinout (A1=OUT, A2=IN, B1=VCC/REF, B2=GND). This allows direct substitution between reference voltage options (e.g., 0.2V, 0.5V, 0.9V, 1.222V) and input polarity variants (noninverting/inverting) without PCB changes, provided the application logic accommodates the different trip point or output polarity.
MAX40002ANS12+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 4-XFBGA, WLBGA
- 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
- :
- 10mV @ 3.3V
- Voltage - Input Offset (Max):
- 0.03µA
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1.1µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 9µs (Typ)
- Propagation Delay (Max):
- 8mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 4-WLP (0.73x0.73)
MAX40002ANS12+T FAQ
1.How can I place an order for MAX40002ANS12+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40002ANS12+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 MAX40002ANS12+T reliable?
The price and inventory of MAX40002ANS12+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40002ANS12+T is usually 5 days.
3.What payment methods are accepted for MAX40002ANS12+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40002ANS12+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40002ANS12+T?
MAX40002ANS12+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40002ANS12+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 MAX40002ANS12+T?
For technical support, including MAX40002ANS12+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40002ANS12+T requirements.
6.How does Aetrix verify that MAX40002ANS12+T is sourced from the original manufacturer or authorized distributors?
All MAX40002ANS12+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 MAX40002ANS12+T meets industry standards.
7.What is the process for return or replacement of MAX40002ANS12+T?
All MAX40002ANS12+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX40002ANS12+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 MAX40002ANS12+T part is unused and in its original packaging.
Return procedure for MAX40002ANS12+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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