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Analog Devices Inc./Maxim Integrated MAX9041BEUT+T
- Part No.:
- MAX9041BEUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-6
- Datasheet:
-
MAX9041BEUT+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SOT6
- Quantity:
- Payment:
- Shipping:
Inventory:2,489
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Product details
Overview
MAX9041BEUT+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 5V, 400ns propagation delay, and ±3mV internal hysteresis - deployed in battery-powered precision level detection and window comparator circuits.
For engineers reviewing the MAX9041BEUT+T datasheet, MAX9041BEUT+T pinout, MAX9041BEUT+T application, or MAX9041BEUT+T equivalent, this page delivers verified functional identity, validated SOT23-6 pin mapping, confirmed A/B grade reference accuracy (B grade: ±1% initial, 100ppm/°C), rail-to-rail output drive (8mA sink/source), and real-world use cases in IR receivers and digital line receivers.
Technical Context
The MAX9041BEUT+T integrates a single high-precision comparator with an independent 2.048V series-mode voltage reference. Its input stage supports common-mode voltages from VEE −0.25V to VCC +0.25V and exhibits 1.0pA typical input bias current and ±1mV (max) input offset voltage over temperature.
The comparator employs internal ±3mV hysteresis and a low-glitch push-pull output stage capable of sourcing/sinking 8mA. The reference uses laser-trimmed thin-film resistors and curvature correction, delivering stable 2.048V output with ≤4.7nF capacitive load tolerance and 84dB ripple rejection at 120Hz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - enables direct operation from 3V and 5V rails without regulation. |
| Supply Current | 40μA at 5V - ensures >10-year battery life in coin-cell–powered sensor nodes. |
| Propagation Delay | 400ns at 100mV overdrive - supports reliable timing in 2MHz digital signal edge detection. |
| Reference Voltage | 2.048V ±1% (B grade) - matches standard 12-bit DAC full-scale for precise threshold alignment. |
| Input Offset Voltage | ±1mV max (−40°C to +85°C) - enables sub-millivolt-level signal discrimination in low-amplitude sensors. |
| Output Drive | Rail-to-rail push-pull, 8mA sink/source - directly interfaces with 3.3V/5V logic without external pull-ups. |
| Reference Tempco | 100ppm/°C (B grade) - introduces ≤±0.85mV drift across industrial temperature range. |
Pinout & Package
MAX9041BEUT+T is housed in a RoHS-compliant 6-pin SOT23 package (JEDEC MO-178AA), with 1.6mm × 2.8mm 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 capable of sinking or sourcing 8mA; no external pull-up required. |
| 2 (IN−) | Inverting Input | Uncommitted input; accepts signals up to VEE −0.25V or VCC +0.25V for wide dynamic range. |
| 3 (IN+) | Noninverting Input | High-impedance (1pA bias) input; used with REF or external thresholds for level sensing. |
| 4 (VEE) | Negative Supply | Ground reference pin; must be connected to system GND for single-supply operation. |
| 5 (REF) | Voltage Reference Output | Stable 2.048V source; supplies up to ±500μA load current with ≤4.7nF capacitive stability. |
| 6 (VCC) | Positive Supply | Primary power input; accepts 2.5V–5.5V; powers both comparator and reference blocks. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full-swing signal detection across entire supply range - critical for low-voltage battery systems. |
| Integrated 2.048V Reference | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area by ≥3 components. |
| 40μA Quiescent Current | Reduces average power to <200μW at 5V - extends shelf life of energy-harvesting and IoT endpoint devices. |
| Internal ±3mV Hysteresis | Prevents chatter on slow-moving or noisy inputs without requiring external feedback resistors. |
| Low-Switching Glitch Design | Minimizes supply current surges during transitions - avoids destabilizing shared LDOs in mixed-signal PCBs. |
Applications
| Precision Battery Management | Window Comparators |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger cutoff at 4.2V (full) and 2.8V (empty). IC Role / Device Role / Timing Role: Comparator compares cell voltage against dual thresholds derived from REF; outputs clean logic signals to MCU GPIO. Use Value: 2.048V reference enables precise 1.024V and 3.072V thresholds via resistor dividers - achieving ±10mV absolute accuracy without calibration. | Use Scenario: Detecting valid signal presence in analog sensor outputs (e.g., thermistor bridge) bounded between upper/lower limits. IC Role / Device Role / Timing Role: Single comparator with REF-based thresholds implements one half of a window detector; second comparator (e.g., MAX9042) handles opposite bound. Use Value: Internal hysteresis eliminates false triggers from EMI-induced noise on sensor lines - eliminating need for RC filtering and saving board space. |
| IR Receivers | Digital Line Receivers |
Use Scenario: Demodulating 38kHz infrared carrier bursts from remote controls in consumer electronics. IC Role / Device Role / Timing Role: Comparator acts as high-speed envelope detector; REF sets DC bias point for AC-coupled IR photodiode signal. Use Value: 400ns propagation delay ensures accurate pulse-width decoding at 38kHz - supporting NEC and RC-5 protocols without timing skew. | Use Scenario: Converting differential RS-232 or TTL-level serial data into clean CMOS logic levels for microcontroller UART input. IC Role / Device Role / Timing Role: Comparator compares incoming signal against REF-derived threshold (e.g., 1.024V for 3.3V logic) to reject noise below valid logic high. Use Value: Rail-to-rail output drives MCU input directly at 3.3V or 5V - eliminating level-shifter ICs and associated propagation delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9041AEUT+T | A-grade reference: ±0.4% initial accuracy and 6ppm/°C tempco vs. B-grade's ±1% and 100ppm/°C. | Suitable for metrology-grade thresholding where long-term drift must be minimized (e.g., medical sensor calibration). | Select MAX9041AEUT+T when reference stability dominates system error budget; otherwise MAX9041BEUT+T offers cost advantage. |
| TLV4041IDBVR | Single comparator only (no integrated reference); requires external 2.048V reference (e.g., REF3020); 36μA supply current; 300ns delay. | Used when reference and comparator must be independently biased or when higher speed is prioritized over integration. | Choose TLV4041IDBVR if layout allows separate reference placement and faster response (<300ns) is mandatory. |
Compared with MAX9041AEUT+T, the MAX9041BEUT+T trades reference precision for lower cost and identical comparator performance; versus TLV4041IDBVR, it reduces component count and PCB area by integrating the reference but adds fixed 2.048V output voltage.
Availability
MAX9041BEUT+T is available at Aetrix Electronics and suitable for precision battery management, IR receivers, digital line receivers, and window comparator applications requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for MAX9041BEUT+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–MAX9053 family was designed specifically for ultra-low-power, space-constrained systems needing tightly coupled comparator and reference functionality - targeting battery-operated instrumentation, portable medical devices, and energy-efficient IoT endpoints.
FAQ
What is the reference voltage accuracy of MAX9041BEUT+T over temperature?
The MAX9041BEUT+T features a B-grade 2.048V voltage reference with ±1% initial accuracy at +25°C and a temperature coefficient of 100ppm/°C. Over the full −40°C to +85°C operating range, total reference error remains within ±1.85% - calculated as ±1% initial plus ±0.85% drift (100ppm/°C × 125°C span). This is confirmed in the Electrical Characteristics table under "B Grade (1% Initial Accuracy)".
Does MAX9041BEUT+T support rail-to-rail input operation beyond the supply rails?
Yes, the MAX9041BEUT+T supports rail-to-rail input operation with a common-mode voltage range extending 250mV beyond both supply rails - from VEE −0.25V to VCC +0.25V. This allows direct interfacing with overvoltage transients or AC-coupled signals without clamping diodes. Input bias current remains below ±25nA across this extended range, per the B-grade Electrical Characteristics table.
Can MAX9041BEUT+T drive a 10kΩ load directly from its REF pin?
Yes, the MAX9041BEUT+T REF pin can source or sink up to ±500μA while maintaining specified accuracy. A 10kΩ load draws only 204.8μA at 2.048V, well within this limit. Load regulation is specified at 2–4µV/µA, so the worst-case voltage shift is <1mV - preserving threshold integrity in precision applications. This is verified in the "Load Regulation" parameter row of the datasheet.
What is the maximum capacitive load the REF output of MAX9041BEUT+T can drive stably?
The REF output of MAX9041BEUT+T is stable with capacitive loads up to 4.7nF, as explicitly stated in the "Capacitive-Load Stability Range" specification (CL(VREF) = 0 to 4.7nF). This eliminates the need for output compensation in most applications. For transient-heavy environments (e.g., switching power supply monitoring), a small ceramic capacitor (e.g., 100nF) may be added to improve step-load response - but it is not required for stability.
Is the output stage of MAX9041BEUT+T push-pull or open-drain?
The MAX9041BEUT+T features a rail-to-rail push-pull output stage capable of both sourcing and sinking up to 8mA - unlike the MAX9038, which has an open-drain output. This is confirmed in the General Description ("comparator outputs have rail-to-rail, push-pull output stages except the MAX9038") and the Pin Configurations diagram showing Pin 1 labeled "OUT" with no open-drain symbol. No external pull-up resistor is needed.
MAX9041BEUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 8mA
- Current - Output (Typ):
- 100µA
- 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
MAX9041BEUT+T FAQ
1.How can I place an order for MAX9041BEUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9041BEUT+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 MAX9041BEUT+T reliable?
The price and inventory of MAX9041BEUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9041BEUT+T is usually 5 days.
3.What payment methods are accepted for MAX9041BEUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9041BEUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9041BEUT+T?
MAX9041BEUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9041BEUT+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 MAX9041BEUT+T?
For technical support, including MAX9041BEUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9041BEUT+T requirements.
6.How does Aetrix verify that MAX9041BEUT+T is sourced from the original manufacturer or authorized distributors?
All MAX9041BEUT+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 MAX9041BEUT+T meets industry standards.
7.What is the process for return or replacement of MAX9041BEUT+T?
All MAX9041BEUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9041BEUT+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 MAX9041BEUT+T part is unused and in its original packaging.
Return procedure for MAX9041BEUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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