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Analog Devices Inc./Maxim Integrated MAX9041AEUT-T
- Part No.:
- MAX9041AEUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-6
- Datasheet:
-
MAX9041AEUT-T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:2,412
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Product details
Overview
MAX9041AEUT-T from Analog Devices is a micropower single-supply comparator with integrated 2.048V precision voltage reference, featuring rail-to-rail inputs/outputs, 40μA supply current at 2.7V, ±0.5mV input offset voltage, and 400ns propagation delay. It operates from 2.5V to 5.5V and targets battery-powered precision sensing and level-detection applications.
For engineers reviewing the MAX9041AEUT-T datasheet, MAX9041AEUT-T pinout, MAX9041AEUT-T application, or MAX9041AEUT-T equivalent, this page delivers verified electrical specs, package mapping, functional role in signal conditioning chains, and validated alternative options for low-power comparator + reference integration.
Technical Context
The MAX9041AEUT-T integrates a single high-precision comparator and a laser-trimmed series-mode voltage reference on one die. Its comparator features internal ±3mV hysteresis, rail-to-rail input range extending 250mV beyond rails, and push-pull output capable of sinking/sourcing 8mA - unlike the open-drain MAX9038.
The 2.048V reference provides ±0.4% initial accuracy (A grade), 6ppm/°C tempco (typ), and stable operation with capacitive loads up to 4.7nF. Input bias current is 1.0pA (typ), and common-mode rejection exceeds 52dB across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports direct interface with 3V and 5V logic systems without level-shifting. |
| Quiescent Supply Current | 40μA at 2.7V - enables multi-year operation in coin-cell–powered IoT sensors. |
| Reference Output Voltage | 2.048V ±0.4% - matches standard 12-bit DAC full-scale codes (e.g., 2.048V = 4096 × 0.5mV) for ratiometric ADC reference. |
| Input Offset Voltage | ±0.5mV (typ) - allows detection of sub-millivolt signal thresholds in precision battery monitoring. |
| Propagation Delay | 400ns at 100mV overdrive - ensures timely response in fast window-comparator or pulse-width detection circuits. |
| Input Common-Mode Range | VEE − 0.25V to VCC + 0.25V - accommodates signals beyond supply rails, simplifying sensor front-end design. |
| Output Drive Capability | Rail-to-rail push-pull, ±8mA - directly drives LEDs, logic gates, or small MOSFET gates without external buffers. |
Pinout & Package
MAX9041AEUT-T is housed in a 6-pin SOT23 package (JEDEC MO-178AA), with 1.3mm × 2.2mm footprint and 0.95mm height - optimized for space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator output | Push-pull rail-to-rail output stage; sinks/sources up to 8mA; no external pull-up required. |
| 2 (IN+) | Noninverting input | High-impedance node (1.0pA bias current); accepts signals from VEE − 0.25V to VCC + 0.25V. |
| 3 (IN−) | Inverting input | Uncommitted input - externally configurable for inverting/noninverting or window-comparator top/bottom thresholds. |
| 4 (VEE) | Negative supply | Ground reference pin; must be connected to system GND or negative rail; supports single-supply operation. |
| 5 (REF) | Voltage reference output | Stable 2.048V source; supplies up to 500μA load current; stable with 0–4.7nF capacitive loading. |
| 6 (VCC) | Positive supply | Primary power input; accepts 2.5V–5.5V; powers both comparator and reference circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 40μA quiescent current enables >10-year battery life in 200μA-average IoT wake-sleep cycles. |
| Integrated precision reference | 2.048V A-grade reference eliminates need for external voltage reference ICs or resistor dividers. |
| Rail-to-rail I/O | Full dynamic range utilization from supply rails improves SNR in low-voltage sensor interfaces. |
| Internal hysteresis | ±3mV built-in hysteresis prevents chatter on slow-moving or noisy input signals without external feedback. |
| Glitch-free switching | Minimal supply current surge during transitions reduces need for large bypass capacitors and eases PCB layout. |
Applications
| Precision Battery Management | Window Comparators |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge to trigger cutoff at 4.2V (full) and 2.8V (empty). IC Role / Device Role / Timing Role: Comparator compares cell voltage against REF-derived thresholds; reference provides stable 2.048V base for ratio-matched resistive divider. Use Value: ±0.4% reference accuracy ensures <±17mV absolute threshold error at 4.2V, preventing overcharge/over-discharge. | Use Scenario: Detecting valid signal presence in industrial analog input modules by checking if voltage lies between upper/lower limits. IC Role / Device Role / Timing Role: Single MAX9041AEUT-T implements one half of window comparator using IN+ and IN−; REF sets center reference point. Use Value: Rail-to-rail inputs accept full 0–5V sensor range; 400ns delay enables real-time fault detection in 2.5MHz sampling systems. |
| IR Receivers | Level Translators |
Use Scenario: Converting weak, noisy IR photodiode signals into clean digital pulses for microcontroller decoding. IC Role / Device Role / Timing Role: Comparator acts as high-gain, low-noise front-end amplifier/discriminator; REF sets adaptive threshold near ambient noise floor. Use Value: 1.0pA input bias avoids loading high-impedance photodiode nodes; 250mV beyond-rail CMVR handles dark-current offsets. | Use Scenario: Translating 1.8V logic outputs to 3.3V or 5V levels for legacy interface compatibility. IC Role / Device Role / Timing Role: Comparator compares 1.8V signal to REF-based threshold; push-pull output drives higher-voltage rail directly. Use Value: No external pull-up needed; 8mA drive strength supports 10cm trace lengths at 10MHz toggle rates without signal degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9041BEUT+T | B-grade reference: ±1% initial accuracy (vs. ±0.4%), 100ppm/°C tempco (vs. 6ppm/°C). | Suitable for cost-sensitive industrial controls where ±20mV threshold tolerance is acceptable. | Select when budget constraints outweigh precision requirements and temperature drift is mitigated by calibration. |
| TLV4041IDBVR | Separate comparator + internal 1.2V reference; 500nA quiescent current; no rail-to-rail input beyond rails. | Ultra-low-power wake-up detection only; lacks 2.048V reference match and extended CMVR for sensor front-ends. | Choose only for sub-μA standby modes where reference accuracy and input range are secondary to current draw. |
Compared with MAX9041BEUT+T and TLV4041IDBVR, the MAX9041AEUT-T uniquely combines A-grade 2.048V reference accuracy, rail-to-rail input beyond supply rails, and 40μA operation - making it optimal for precision battery gauging and calibrated sensor interfaces where reference stability and input flexibility are non-negotiable.
Availability
MAX9041AEUT-T is available at Aetrix Electronics and suitable for precision battery management, window comparators, IR receivers, and level translators requiring stable component supply across automotive, industrial, and medical device production programs.
Supply support for MAX9041AEUT-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 MAX9038–MAX9043 family was designed specifically for ultra-low-power, single-supply systems needing integrated precision comparison and voltage referencing - eliminating discrete reference ICs and reducing board area in portable and energy-harvesting applications.
FAQ
What is the reference voltage accuracy and temperature coefficient of MAX9041AEUT-T?
The MAX9041AEUT-T features an A-grade 2.048V voltage reference with ±0.4% initial accuracy over temperature and a typical temperature coefficient of 6ppm/°C. This specification is guaranteed across the full −40°C to +85°C operating range and enables precise ratiometric measurements in battery monitoring and sensor conditioning circuits using the MAX9041AEUT-T.
Does MAX9041AEUT-T support rail-to-rail input operation beyond the supply rails?
Yes, the MAX9041AEUT-T supports a common-mode input voltage range from VEE − 0.25V to VCC + 0.25V. This extended rail-to-rail capability allows the comparator to accurately process signals that exceed the supply rails - critical for handling sensor offset voltages or transient overvoltage conditions without clipping, as confirmed in the MAX9041AEUT-T datasheet's Electrical Characteristics table.
What is the maximum capacitive load the REF pin of MAX9041AEUT-T can drive while remaining stable?
The REF pin of the MAX9041AEUT-T is stable with capacitive loads up to 4.7nF, as specified in the datasheet's "Capacitive-Load Stability Range" parameter. This eliminates the need for output capacitors in most applications but permits adding up to 4.7nF to improve transient response during step-load changes - a key design advantage over references requiring strict zero-capacitance operation.
Can MAX9041AEUT-T replace MAX9040AEUK+T in a design?
No, MAX9041AEUT-T cannot directly replace MAX9040AEUK+T due to differing pinouts and IN− configuration: MAX9040AEUK+T ties IN− internally to REF (fixed threshold), while MAX9041AEUT-T leaves IN− uncommitted for flexible external threshold setting. Both share the same 2.048V reference and A-grade accuracy, but circuit redesign is required to accommodate the independent IN− pin in the MAX9041AEUT-T.
What is the output drive strength and logic compatibility of MAX9041AEUT-T?
The MAX9041AEUT-T features a rail-to-rail push-pull output capable of sinking and sourcing up to 8mA, with VOL ≤ 0.55V at 5V/8mA and VOH ≥ 4.45V at 5V/8mA. This ensures direct compatibility with TTL, CMOS, and 3.3V/5V microcontroller inputs without level-shifting components - a verified performance characteristic documented in the MAX9041AEUT-T Electrical Characteristics table.
MAX9041AEUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 8mA
- Current - Output (Typ):
- 72µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 450ns
- Propagation Delay (Max):
- ±3mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-6
MAX9041AEUT-T FAQ
1.How can I place an order for MAX9041AEUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9041AEUT-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 MAX9041AEUT-T reliable?
The price and inventory of MAX9041AEUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9041AEUT-T is usually 5 days.
3.What payment methods are accepted for MAX9041AEUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9041AEUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9041AEUT-T?
MAX9041AEUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9041AEUT-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 MAX9041AEUT-T?
For technical support, including MAX9041AEUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9041AEUT-T requirements.
6.How does Aetrix verify that MAX9041AEUT-T is sourced from the original manufacturer or authorized distributors?
All MAX9041AEUT-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 MAX9041AEUT-T meets industry standards.
7.What is the process for return or replacement of MAX9041AEUT-T?
All MAX9041AEUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9041AEUT-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 MAX9041AEUT-T part is unused and in its original packaging.
Return procedure for MAX9041AEUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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