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Analog Devices Inc./Maxim Integrated MAX9050BEUK-T
- Part No.:
- MAX9050BEUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX9050BEUK-T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,079
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Product details
Overview
MAX9050BEUK-T from Analog Devices is a micropower single-supply comparator with integrated 2.500V precision voltage reference, featuring rail-to-rail inputs/outputs, 40μA supply current at 2.7V, ±3mV internal hysteresis, and 400ns propagation delay. It operates from 2.7V to 5.5V and is designed for precision battery management and low-power sensor interface applications.
For engineers reviewing the MAX9050BEUK-T datasheet, MAX9050BEUK-T pinout, MAX9050BEUK-T application, or MAX9050BEUK-T equivalent, this page delivers verified electrical parameters, SOT23-5 package mapping, real-world use scenarios, and two validated alternative parts for design-in flexibility under tight power and accuracy constraints.
Technical Context
The MAX9050BEUK-T integrates a single comparator with a dedicated 2.500V series-mode voltage reference. Its comparator input stage supports common-mode voltages from VEE −0.25V to VCC +0.25V and exhibits 1.0pA typical input bias current and ±0.5mV typical input offset voltage. The reference uses laser-trimmed thin-film resistors and curvature correction for stability.
The output stage provides rail-to-rail push-pull operation capable of sinking and sourcing up to 8mA, while internal hysteresis ensures clean switching on slow signals. Supply current remains stable across temperature (−40°C to +85°C) and switching frequency, with no significant surge during transitions-enabling robust performance in battery-powered systems without large bypass capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct connection to Li-ion, 3.3V, and 5V rails without regulation |
| Quiescent Supply Current | 40μA at 2.7V - enables >1-year battery life in 10μA-average-current IoT endpoints |
| Reference Output Voltage | 2.500V ±0.010V (B grade) - precise threshold setting for ADC reference or overvoltage detection |
| Input Offset Voltage | ±1.0mV (max, B grade) - ensures accurate decision thresholds in millivolt-level sensor comparisons |
| Propagation Delay | 400ns at 100mV overdrive - suitable for fast-response window comparators and digital line receivers |
| Reference Tempco | 100ppm/°C (B grade) - introduces ≤±0.25% drift over −40°C to +85°C operating range |
| Capacitive Load Stability | 0–4.7nF - allows direct buffering of reference output into ADC sample-and-hold without oscillation |
Pinout & Package
MAX9050BEUK-T is housed in a RoHS-compliant 5-pin SOT23 package (JEDEC MO-178AA), with 1.6mm × 2.8mm footprint and 0.95mm height. Pin 1 is marked by a dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator output | Rail-to-rail push-pull stage; sinks/sources up to 8mA; no external pull-up required |
| 2 (IN−) | Inverting input | Uncommitted input; accepts signals beyond rails (VEE −0.25V to VCC +0.25V) |
| 3 (VEE) | Negative supply | Ground reference for single-supply operation; connects to system GND |
| 4 (REF) | Voltage reference output | Stable 2.500V source; supplies up to ±500μA; stable with 0–4.7nF load capacitance |
| 5 (VCC) | Positive supply | Primary power input; supports 2.7V–5.5V; powers both comparator and reference |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 40μA quiescent current enables multi-year battery life in portable medical sensors |
| Integrated 2.500V reference | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area |
| Rail-to-rail I/O | Full dynamic range utilization from 0V to VCC improves SNR in low-voltage signal chains |
| Internal ±3mV hysteresis | Prevents chatter on noisy or slowly varying inputs without external feedback components |
| No supply glitches during switching | Minimal ICC transient eliminates need for local bulk capacitance near VCC pin |
Applications
| Precision Battery Management | Window Comparators |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger cutoff at 2.500V ±10mV thresholds. IC Role / Device Role / Timing Role: Comparator compares cell voltage against 2.500V reference; output drives enable/disable logic for protection circuitry. Use Value: Eliminates external reference and reduces total solution size by 30% versus discrete comparator + REF design. | Use Scenario: Detecting valid signal presence in industrial analog input modules using upper/lower bounds around 2.500V. IC Role / Device Role / Timing Role: Single comparator with REF pin used in conjunction with external resistive divider to define window boundaries. Use Value: 400ns delay and rail-to-rail output ensure fast response to out-of-window events without timing uncertainty. |
| IR Receivers | Digital Line Receivers |
Use Scenario: Converting modulated IR photodiode output into clean digital pulses for microcontroller decoding. IC Role / Device Role / Timing Role: Comparator detects zero-crossings or amplitude thresholds; REF sets consistent decision level independent of supply variation. Use Value: 1.0pA input bias current prevents signal degradation from high-impedance photodiode sources. | Use Scenario: Recovering TTL/CMOS logic levels from attenuated or noisy traces in legacy industrial backplanes. IC Role / Device Role / Timing Role: Comparator acts as level translator and noise filter; REF provides stable 2.5V threshold for 3.3V logic compatibility. Use Value: Rail-to-rail output ensures full-swing logic levels compatible with downstream FPGA or MCU inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9050AEUK+T | Same package and pinout; A-grade reference (±0.4% initial accuracy, 6ppm/°C tempco) vs. B-grade (±1%, 100ppm/°C) | Required where <±0.1% total reference error over temperature is critical (e.g., precision data acquisition) | Select MAX9050AEUK+T when long-term accuracy outweighs cost sensitivity; MAX9050BEUK-T suits cost-constrained battery monitors. |
| TLV4041IDBVR | Single comparator only (no integrated reference); requires external 2.5V reference; 350ns propagation delay; 850nA supply current | Used when reference must be shared across multiple comparators or when higher speed is needed | Choose TLV4041IDBVR if system already includes a precision reference; MAX9050BEUK-T reduces component count where standalone thresholding is needed. |
Compared with MAX9050AEUK+T, the MAX9050BEUK-T trades reference accuracy for lower cost and broader tempco tolerance, while TLV4041IDBVR offers faster response but demands external reference support and increases board area and BOM complexity.
Availability
MAX9050BEUK-T is available at Aetrix Electronics and suitable for precision battery management, window comparator circuits, IR receiver front-ends, and digital line receiver designs requiring stable component supply across industrial and portable electronics programs.
Supply support for MAX9050BEUK-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 MAX9050BEUK-T belongs to the MAX9038–MAX9053 family of micropower comparator + reference ICs, engineered specifically for ultra-low-power sensing, battery monitoring, and precision threshold detection in space- and energy-constrained systems.
FAQ
What is the reference voltage accuracy specification for MAX9050BEUK-T?
The MAX9050BEUK-T features a B-grade 2.500V voltage reference with ±1% initial accuracy (±25mV) and a temperature coefficient of 100ppm/°C. At +25°C, the output is guaranteed between 2.475V and 2.525V. This accuracy level is sufficient for non-critical threshold detection in battery monitoring and industrial control applications where cost efficiency is prioritized over metrology-grade precision.
Can MAX9050BEUK-T operate from a 2.5V supply?
No, MAX9050BEUK-T requires a minimum supply voltage of 2.7V per its Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.7V may result in undefined reference output, increased propagation delay, or failure to meet specified hysteresis and input offset performance. For 2.5V systems, consider the MAX9040BEUK+T (2.048V reference, 2.5V min supply) or verify compatibility via bench testing under worst-case conditions.
Does MAX9050BEUK-T require an external capacitor on the REF pin?
No, the MAX9050BEUK-T is internally compensated and stable with 0–4.7nF capacitive loads on the REF pin. An external capacitor is optional and recommended only in applications subject to rapid load or supply transients, where it improves transient response and reduces overshoot. In static or low-dynamic applications like battery voltage monitoring, the REF capacitor may be omitted to save board space and cost.
What is the maximum sink/source current capability of the MAX9050BEUK-T output?
The MAX9050BEUK-T output stage can sink and source up to 8mA while maintaining rail-to-rail swing. At VCC = 5V and ISINK = 8mA, VOL is guaranteed ≤0.55V; at VCC = 2.7V and ISINK = 3.5mA, VOL ≤0.4V. This drive strength allows direct interfacing with standard logic inputs, LED indicators, or small MOSFET gates without external buffers-reducing component count in compact sensor nodes.
How does the internal hysteresis of MAX9050BEUK-T affect its use in noisy environments?
The MAX9050BEUK-T incorporates fixed ±3mV internal hysteresis, which prevents output oscillation when input signals cross the decision threshold slowly or contain noise within that band. This eliminates the need for external positive feedback resistors in most applications, simplifying design and improving reliability in EMI-prone industrial settings. For wider hysteresis (e.g., >10mV), external resistor networks can be added per the datasheet's Application Information section.
MAX9050BEUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- 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 (±):
- 2.7V ~ 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-23-5
MAX9050BEUK-T FAQ
1.How can I place an order for MAX9050BEUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9050BEUK-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 MAX9050BEUK-T reliable?
The price and inventory of MAX9050BEUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9050BEUK-T is usually 5 days.
3.What payment methods are accepted for MAX9050BEUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9050BEUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9050BEUK-T?
MAX9050BEUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9050BEUK-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 MAX9050BEUK-T?
For technical support, including MAX9050BEUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9050BEUK-T requirements.
6.How does Aetrix verify that MAX9050BEUK-T is sourced from the original manufacturer or authorized distributors?
All MAX9050BEUK-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 MAX9050BEUK-T meets industry standards.
7.What is the process for return or replacement of MAX9050BEUK-T?
All MAX9050BEUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9050BEUK-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 MAX9050BEUK-T part is unused and in its original packaging.
Return procedure for MAX9050BEUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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