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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:2,677
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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, ±0.5mV typical input offset voltage, and 400ns propagation delay. It operates from 2.5V to 5.5V and is designed for battery-powered precision threshold detection in portable instrumentation and sensor interfaces.
For engineers reviewing the MAX9041BEUT-T datasheet, MAX9041BEUT-T pinout, MAX9041BEUT-T application, or MAX9041BEUT-T equivalent, this page delivers verified circuit role (single comparator + reference), package mapping (6-pin SOT23), pin-level design meaning, real-world use value in low-power analog monitoring, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The MAX9041BEUT-T integrates a single high-precision comparator with an uncommitted inverting input and a stable 2.048V series-mode reference using curvature correction and laser-trimmed thin-film resistors. Its rail-to-rail input stage supports common-mode voltages from VEE − 0.25V to VCC + 0.25V, and its push-pull output drives ±8mA with <0.55V VOL at 8mA sink and >4.45V VOH at 8mA source (VCC = 5V).
Internal ±3mV hysteresis ensures clean switching on slow signals, while the unique output stage minimizes supply current surges during transitions-reducing power-supply glitches and eliminating need for large bypass capacitors in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - enables direct operation from Li-ion, coin-cell, or regulated 3.3V/5V rails without external regulators |
| Quiescent Supply Current | 40μA at 5V - extends battery life in always-on monitoring systems (e.g., >10 years on CR2032 at 1Hz wake-up) |
| Reference Output Voltage | 2.048V ±0.4% (A grade) - matches standard 12-bit DAC full-scale codes (2.048V = 211 × 1mV), simplifying ratiometric ADC interfacing |
| Input Offset Voltage | ±0.5mV typ - supports sub-millivolt threshold accuracy in precision window or zero-crossing detection |
| Propagation Delay | 400ns at 100mV overdrive - sufficient for kHz-range signal conditioning (e.g., IR receiver burst decoding, level translation) |
| Common-Mode Input Range | VEE − 0.25V to VCC + 0.25V - allows direct sensing of signals beyond supply rails (e.g., thermocouple outputs, shunt voltage above VCC) |
| Output Drive Capability | Rail-to-rail push-pull, ±8mA - directly drives LEDs, logic gates, or small MOSFET gates without external buffers |
Pinout & Package
MAX9041BEUT-T is housed in a RoHS-compliant 6-pin SOT23 package (JEDEC MO-178AA), footprint-compatible with industry-standard 6-lead SOT-23 layouts and reflow-process qualified per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator Output | Push-pull rail-to-rail output capable of sourcing/sinking 8mA; no external pull-up required for logic interfacing |
| 2 (IN−) | Comparator Inverting Input | Uncommitted input - accepts external feedback or reference for custom hysteresis or differential sensing |
| 3 (IN+) | Comparator Noninverting Input | High-impedance (1pA bias current) node for precision signal routing; supports rail-to-rail common-mode range |
| 4 (REF) | Voltage Reference Output | Stable 2.048V source with ±0.4% initial accuracy and 6ppm/°C tempco; sinks/sources up to 500μA |
| 5 (VEE) | Negative Supply | Ground reference pin; must be connected to system GND (not floating); supports 0V operation |
| 6 (VCC) | Positive Supply | Primary power input; accepts 2.5–5.5V; internal regulation isolates reference from supply noise |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.048V reference | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area by ≥3 components |
| Rail-to-rail I/O with 8mA drive | Direct interface to 1.8V/3.3V/5V logic families and small loads without level shifters or buffer stages |
| 40μA quiescent current | Enables continuous monitoring in energy-harvesting or coin-cell applications where average current must stay below 50μA |
| ±3mV internal hysteresis | Prevents chatter on noisy or slowly varying inputs (e.g., thermistor outputs), removing need for external hysteresis resistors |
| Stable with 0–4.7nF REF load | Allows local decoupling capacitor on reference pin to suppress transient-induced errors without oscillation risk |
Applications
| Precision Battery Management | Window Comparators |
|---|---|
Use Scenario: Monitoring cell voltage in multi-cell Li-ion packs to trigger charge termination or low-voltage cutoff. IC Role / Device Role / Timing Role: Single comparator compares sensed cell voltage against 2.048V reference to detect overvoltage/undervoltage thresholds. Use Value: 0.4% reference accuracy ensures ±8.2mV absolute threshold tolerance at 2.048V, meeting IEC 62133 cell protection requirements. | Use Scenario: Detecting valid signal presence in industrial analog input modules (e.g., 4–20mA loop receivers). IC Role / Device Role / Timing Role: Two MAX9041BEUT-T units form high/low thresholds around a 2.048V center; output OR'd to indicate in-window condition. Use Value: Matched reference voltage across both devices eliminates inter-channel offset error, enabling <±10mV window accuracy. |
| IR Receivers | Level Translators |
Use Scenario: Demodulating 38kHz IR carrier bursts in remote control receivers with minimal external components. IC Role / Device Role / Timing Role: Comparator detects envelope of bandpass-filtered IR signal against DC-biased 2.048V reference to regenerate digital data stream. Use Value: 400ns propagation delay supports reliable decoding of 38kHz carrier (26.3μs period), with timing margin for signal rise/fall asymmetry. | Use Scenario: Converting 5V logic signals to 3.3V or 1.8V domains in mixed-voltage microcontroller systems. IC Role / Device Role / Timing Role: Comparator uses 2.048V reference as threshold to translate rising/falling edges between voltage domains. Use Value: Rail-to-rail push-pull output drives 3.3V logic directly; 40μA supply current avoids loading legacy 5V bus in retrofit designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV4041IDBVR | Single comparator + 1.2V reference; 650nA IQ; no rail-to-rail inputs; 3.5μs propagation delay | Ultra-low-power (<1μA) sensing only; unsuitable for fast or rail-sensing applications | Select when battery life >10 years is critical and speed/accuracy are secondary |
| MAX9061AUT+T | Single comparator + 2.048V reference; 55μA IQ; rail-to-rail I/O; 220ns propagation delay; 8-pin SOT23-8 | Higher speed and same reference spec, but larger package and higher cost | Select when <250ns propagation delay is required and board space permits 8-pin variant |
Compared with TLV4041IDBVR and MAX9061AUT+T, MAX9041BEUT-T uniquely balances 400ns speed, 40μA ultra-low quiescent current, rail-to-rail input capability, and compact 6-pin SOT23 footprint-making it optimal for space- and power-constrained precision threshold detection where 2.048V reference alignment is essential.
Availability
MAX9041BEUT-T is available at Aetrix Electronics and suitable for precision battery management, IR receiver front-ends, window comparator circuits, and level translation applications requiring stable component supply across automotive, industrial, and portable medical device production programs.
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–MAX9043/MAX9050–MAX9053 product line delivers integrated comparator + reference solutions optimized for micropower, single-supply operation in portable and battery-critical systems-enabling simplified, space-efficient analog signal conditioning.
FAQ
What is the reference voltage accuracy and temperature coefficient of MAX9041BEUT-T?
The MAX9041BEUT-T features a 2.048V precision voltage reference with ±0.4% initial accuracy (A grade) and a typical temperature coefficient of 6ppm/°C over −40°C to +85°C. This specification is guaranteed across the full operating temperature range and enables stable threshold setting in environments with wide thermal variation, such as outdoor sensor nodes or automotive cabin modules.
Can MAX9041BEUT-T operate from a 2.7V supply?
Yes, MAX9041BEUT-T operates from 2.5V to 5.5V, so it functions reliably at 2.7V. At 2.7V, its supply current remains 40μA (typ), output low voltage is ≤0.4V at 3.5mA sink, and reference output holds 2.048V ±0.4%. This makes it ideal for single-cell Li-ion (2.7–4.2V) or 3V alkaline systems without voltage boosting.
Does MAX9041BEUT-T have internal hysteresis, and can it be adjusted?
Yes, MAX9041BEUT-T includes fixed ±3mV internal hysteresis to prevent output chatter on noisy or slow-moving inputs. While this hysteresis cannot be disabled, additional hysteresis can be added externally using positive feedback resistors from OUT to IN+, enabling custom trip-point spacing for applications like thermostat control or analog window detection.
What is the maximum capacitive load supported on the REF pin of MAX9041BEUT-T?
The REF pin of MAX9041BEUT-T is stable with capacitive loads from 0 to 4.7nF. Adding a 100nF ceramic capacitor improves transient response during load steps but is not required for stability. This eliminates the need for complex compensation networks and simplifies design in battery-monitoring circuits where reference settling time impacts measurement accuracy.
Is MAX9041BEUT-T pin-compatible with other devices in the MAX90xx family?
MAX9041BEUT-T shares the same 6-pin SOT23 pinout as MAX9040AEUT+T, MAX9041AEUT+T, and MAX9051x variants, but differs from MAX9038/MAX9039 (same package, different reference voltage and open-drain output). Always verify reference voltage (2.048V), output type (push-pull), and IN− connection (uncommitted) before substitution.
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:
- 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
- :
- 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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