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Analog Devices Inc./Maxim Integrated MAX40012ANS09+T
- Part No.:
- MAX40012ANS09+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 4-XFBGA, WLBGA
- Datasheet:
-
MAX40012ANS09+T.pdf
- Description:
- 600NA COMPARATOR IN ULTRA-TINY 0
- Quantity:
- Payment:
- Shipping:
Inventory:2,991
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Product details
Overview
MAX40012ANS09+T from Analog Devices is a nanoPower, noninverting-input comparator with integrated 0.9V factory-trimmed reference, 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 housed in a 0.73mm × 0.73mm 4-bump WLP - ideal for space-constrained battery-powered mobile and portable medical devices.
For engineers reviewing the MAX40012ANS09+T datasheet, MAX40012ANS09+T pinout, MAX40012ANS09+T application, or MAX40012ANS09+T equivalent, key selection factors include its 0.9V internal reference accuracy (±18mV over –40°C to +125°C), 9µs propagation delay at 100mV overdrive, RF-immune input architecture, and power-down high-impedance inputs enabling flexible low-power system sequencing.
Technical Context
The MAX40012ANS09+T implements a BiCMOS input stage that allows input voltage to exceed VCC by several volts without clamping - unlike conventional comparators with ESD diode-limited inputs. Its internal 0.9V reference is temperature-compensated and specified across –40°C to +125°C automotive grade.
This device features 8mV typical internal hysteresis for noise immunity, open-drain output compatible with pullup voltages up to 5.5V, and maintains >100MΩ input impedance even when VCC = 0V - enabling safe "always-on" monitoring in partial-power-down systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7V to 5.5V - supports direct interface with 1.8V, 2.5V, 3.3V, and 5V logic rails without level shifting. |
| Quiescent Supply Current | 500nA typical - enables multi-year battery life in always-monitoring applications like wearable health sensors. |
| Internal Reference Voltage | 0.9V ±18mV (–40°C to +125°C) - factory-trimmed, eliminates external reference IC and associated board area/cost. |
| Propagation Delay | 9µs at 100mV overdrive - ensures timely response in fast threshold-detection circuits such as battery charge-state flags. |
| Input Voltage Range | 0.1V to 5.5V independent of supply - permits direct sensing of sub-1V analog signals (e.g., thermistor outputs) without amplification. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial control, and extended-range portable instrumentation. |
| Package | 0.73mm × 0.73mm, 4-bump WLP - occupies <0.53mm² PCB area, smaller than two 0402 passives. |
Pinout & Package
MAX40012ANS09+T uses a 4-bump wafer-level package (WLP) with 0.35mm pitch and 0.73mm × 0.73mm footprint. Bump configuration follows standard A1/A2/B1/B2 layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | OUT | Open-drain output requiring external pullup; sinks current when input exceeds 0.9V reference, remains high-Z otherwise. |
| A2 | IN | Noninverting input; asserts OUT low when voltage at IN falls below 0.9V, high when above - used for rising-edge detection. |
| B1 | VCC/REF | Single terminal for both supply voltage (1.7V–5.5V) and internal reference enable; bypass with 0.1µF capacitor to GND. |
| B2 | GND | Analog ground reference; must be connected directly to system ground plane for stable reference operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 500nA supply current enables continuous monitoring in energy-harvesting and coin-cell-powered systems. |
| Input overvoltage tolerance | Inputs operate safely up to 6V regardless of VCC - eliminates need for external clamping diodes in mixed-voltage sensor interfaces. |
| Power-off input high impedance | Input leakage <30nA at VCC = 0V - prevents signal loading during system sleep modes or brownout conditions. |
| On-chip RF filtering | Integrated input-stage filtering rejects common-mode RF interference from cellular, Wi-Fi, or switching regulator noise. |
| Factory-trimmed precision reference | 0.9V reference with ±1.8% max error over full temperature range - replaces discrete resistor-divider networks and improves long-term stability. |
Applications
| Smartphone Battery Protection | Portable ECG Monitor |
|---|---|
Use Scenario: Detecting cell voltage drop below 3.3V cutoff threshold during discharge to prevent deep discharge damage. IC Role / Device Role / Timing Role: Noninverting comparator comparing battery voltage against internal 0.9V reference scaled via external resistor divider. Use Value: Eliminates external reference IC and reduces BOM count by one component while maintaining ±18mV trip-point accuracy over temperature. | Use Scenario: Monitoring lead-off condition by detecting electrode impedance rise via AC-coupled signal amplitude threshold. IC Role / Device Role / Timing Role: Adaptive threshold detector using DAC-driven REF input (not applicable here); instead, fixed 0.9V reference sets baseline for analog front-end signal integrity check. Use Value: 500nA quiescent current extends single-charge runtime beyond 30 days in intermittent-sampling ECG patches. |
| Industrial Sensor Node | Wireless Hearing Aid |
Use Scenario: Supervising 24V DC input rail for undervoltage lockout in battery-backed field transmitters. IC Role / Device Role / Timing Role: High-side sensing via resistive divider feeding IN; open-drain OUT drives microcontroller interrupt line. Use Value: Input voltage range up to 5.5V allows direct connection to scaled-down rail without op-amp buffer, reducing component count and power loss. | Use Scenario: Enabling low-battery warning LED when rechargeable Li-ion drops below 3.0V. IC Role / Device Role / Timing Role: Noninverting comparator with 0.9V reference and 3.3:1 resistor divider on IN to detect 3.0V threshold. Use Value: 0.73mm × 0.73mm WLP fits within tight acoustic module cavity; 9µs delay ensures prompt alert before critical shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX40012AUK09+T | SOT23-5 package (5-pin), same 0.9V reference, noninverting, open-drain; higher θJA (255.9°C/W) vs. WLP (104.4°C/W). | Preferred where manual soldering, test probing, or legacy SOT23 footprints are required; less suitable for ultra-dense HDI layouts. | Select for prototyping, lower-volume production, or compatibility with existing SOT23 assembly lines. |
| TLV3691IDCKR | 0.9V reference not available; offers 1.2V option only; 320nA supply current; SC70-5 package; no input overvoltage tolerance beyond VCC. | Lacks input overvoltage capability and factory-trimmed 0.9V option; requires external reference or resistor divider for 0.9V threshold. | Choose only if 0.9V reference is not mandatory and board space allows larger SC70 footprint. |
Compared with MAX40012AUK09+T, the MAX40012ANS09+T saves >70% PCB area and improves thermal performance; compared with TLV3691IDCKR, it delivers exact 0.9V threshold without external components and tolerates input signals exceeding VCC - critical for robust sensor interfacing.
Availability
MAX40012ANS09+T is available at Aetrix Electronics and suitable for smartphone battery management, portable medical diagnostics, and industrial sensor node designs requiring stable component supply across automotive-grade temperature ranges and long product lifecycles.
Supply support for MAX40012ANS09+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 MAX40012 series belongs to Analog Devices' nanoPower comparator family, designed specifically for ultra-low-power, space-constrained portable electronics where battery longevity and miniaturization are primary system requirements.
FAQ
What is the internal reference voltage accuracy of MAX40012ANS09+T over temperature?
The MAX40012ANS09+T features a factory-trimmed 0.9V internal reference with ±18mV (±2%) maximum deviation over the full –40°C to +125°C operating range. At +25°C, the typical tolerance is ±12mV. This accuracy is specified in the Electrical Characteristics table under "Switching Threshold Voltage" for MAX4001_ _ _ _ 09+ variants and does not require external calibration.
Can MAX40012ANS09+T interface directly with a 5V microcontroller GPIO when powered from 3.3V?
Yes - the open-drain output of MAX40012ANS09+T can be pulled up to any voltage up to 5.5V, including a 5V microcontroller I/O rail. When powered from 3.3V, the device's output will safely sink current from the 5V pullup without damage, enabling level-shifting functionality without additional components.
Does MAX40012ANS09+T require an external bypass capacitor?
Yes - a 0.1µF ceramic capacitor must be placed between the VCC/REF pin and GND, located as close as possible to the device. This capacitor stabilizes the internal reference and supply rail during output switching events, preventing false triggering caused by supply transients, as explicitly required in the Applications Information section.
What is the maximum input voltage allowed at the IN pin of MAX40012ANS09+T?
The absolute maximum rating for the IN pin is –0.3V to +6V, independent of VCC. This overvoltage tolerance is enabled by the proprietary BiCMOS input architecture and allows direct connection to signals exceeding the supply rail - for example, a 4.2V battery sense line while operating from 1.8V - without external protection circuitry.
Is MAX40012ANS09+T pin-compatible with other members of the MAX40012–MAX40015 family?
Yes - all MAX40012–MAX40015 WLP variants (e.g., MAX40012ANS09+T, MAX40013ANS09+T, MAX40014ANS09+T) share identical 4-bump WLP pinout (A1=OUT, A2=IN, B1=VCC/REF, B2=GND). Functionality differs only in input polarity (noninverting vs. inverting) and output type (open-drain vs. push-pull), not physical layout.
MAX40012ANS09+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 4-XFBGA, WLBGA
- Series:
- nanoPower
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.7V ~ 5.5V
- :
- 32mV @ 3.3V
- Voltage - Input Offset (Max):
- 0.09µA @ 3.3V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 1.3µA
- Current - Quiescent (Max):
- 45dB PSRR (Min)
- CMRR, PSRR (Typ):
- 45µs (Typ)
- Propagation Delay (Max):
- 8mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 4-WLP (0.73x0.73)
MAX40012ANS09+T FAQ
1.How can I place an order for MAX40012ANS09+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40012ANS09+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 MAX40012ANS09+T reliable?
The price and inventory of MAX40012ANS09+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40012ANS09+T is usually 5 days.
3.What payment methods are accepted for MAX40012ANS09+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40012ANS09+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40012ANS09+T?
MAX40012ANS09+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40012ANS09+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 MAX40012ANS09+T?
For technical support, including MAX40012ANS09+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40012ANS09+T requirements.
6.How does Aetrix verify that MAX40012ANS09+T is sourced from the original manufacturer or authorized distributors?
All MAX40012ANS09+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 MAX40012ANS09+T meets industry standards.
7.What is the process for return or replacement of MAX40012ANS09+T?
All MAX40012ANS09+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX40012ANS09+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 MAX40012ANS09+T part is unused and in its original packaging.
Return procedure for MAX40012ANS09+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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