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Analog Devices Inc./Maxim Integrated MAX9050BEUK
- Part No.:
- MAX9050BEUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX9050BEUK.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,491
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Product details
Overview
MAX9050BEUK from Maxim Integrated is a micropower, single-supply comparator with integrated 2.500V precision voltage reference in SOT23-5 package. It features rail-to-rail inputs/outputs, 40µA quiescent current, 400ns propagation delay, and ±3mV internal hysteresis - enabling reliable threshold detection in battery-powered sensor monitoring systems.
For engineers reviewing the MAX9050BEUK datasheet, MAX9050BEUK pinout, MAX9050BEUK application, or MAX9050BEUK equivalent, this device serves as a compact, low-power solution for precision level sensing where supply current, reference stability, and fast response under 2.7V–5.5V operation are critical selection criteria.
Technical Context
The MAX9050BEUK integrates a single high-precision comparator and a laser-trimmed series-mode voltage reference on one die. Its input common-mode range extends 250mV beyond both rails (VEE − 0.25V to VCC + 0.25V), supporting wide-swing signal conditioning in single-supply systems.
The comparator employs a unique output stage that minimizes supply current surges during switching, eliminating typical supply glitches. The reference delivers 2.500V ±1% initial accuracy (B grade) with 100ppm/°C tempco and supports up to ±500µA load current while remaining stable with 0–4.7nF capacitive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - enables direct use in Li-ion, 3.3V, and 5V systems without level-shifting. |
| Quiescent Current | 40µA at 2.7V - extends battery life in always-on monitoring applications like portable gas detectors. |
| Propagation Delay | 400ns at 100mV overdrive - supports fast edge detection in pulse-width encoded signals. |
| Reference Output Voltage | 2.500V ±1% (B grade) - provides accurate ADC reference or comparator trip point without external trimming. |
| Input Offset Voltage | ±9.0mV max - ensures consistent switching thresholds across temperature and process variation. |
| Rail-to-Rail I/O | Inputs extend 250mV beyond rails; outputs sink/source 8mA - simplifies interface with diverse logic families and analog sensors. |
| Internal Hysteresis | ±3mV - prevents chatter on slow-moving or noisy input signals without external feedback components. |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, RoHS-compliant, rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VEE | Negative supply / ground reference | Connects to system ground; defines lower rail for comparator and reference operation. |
| 2 - IN− | Inverting input | Accepts threshold or reference signal; used with IN+ to configure window or level-detection topology. |
| 3 - IN+ | Noninverting input | Accepts sensed signal (e.g., sensor output); determines output polarity relative to IN−. |
| 4 - REF | Precision 2.500V reference output | Stable, low-noise voltage source usable for ADC reference, biasing, or comparator trip setting. |
| 5 - VCC | Positive supply input | Single power rail (2.7V–5.5V); powers both comparator and reference circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 40µA supply current enables >10-year battery life in 10µA average-current IoT endpoint designs. |
| Integrated 2.500V reference | Eliminates need for external reference IC or resistor divider, reducing BOM count and layout area by ≥3 components. |
| Rail-to-rail input range | Supports direct interface with sensors outputting near-rail voltages (e.g., thermistors, RTDs, current-sense amps). |
| Glitch-free output switching | Unique output stage suppresses supply current spikes, removing need for large local bypass capacitors in space-constrained PCBs. |
| Capacitive-load stability | Stable with up to 4.7nF on REF pin - allows direct connection to ADC reference inputs or filtering caps without oscillation risk. |
Applications
| Precision Battery Monitoring | Industrial Sensor Threshold Detection |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles in portable medical devices. IC Role / Device Role / Timing Role: Comparator compares cell voltage against 2.500V reference to trigger low-voltage shutdown or full-charge flag. Use Value: 40µA quiescent current preserves standby battery life; ±3mV hysteresis prevents false triggers from measurement noise. |
Use Scenario: Detecting overtemperature condition from a PT100 RTD bridge in factory automation PLC modules. IC Role / Device Role / Timing Role: Converts RTD resistance change into voltage, then compares against 2.500V reference to assert fault signal. Use Value: Rail-to-rail inputs accept full bridge output swing; 400ns delay ensures timely response to thermal runaway events. |
| Portable Gas Detector Alarms | Low-Power Data Line Receiver |
Use Scenario: Activating audible alarm when electrochemical sensor output exceeds toxic gas threshold in handheld safety meters. IC Role / Device Role / Timing Role: Single comparator with internal hysteresis compares amplified sensor signal to stable 2.500V reference. Use Value: 2.7V minimum supply allows operation down to single-cell alkaline; 100ppm/°C tempco maintains accuracy across field temperature ranges. |
Use Scenario: Converting analog line-level signals (e.g., RS-232 receive path) to clean digital logic in ultra-low-power remote telemetry units. IC Role / Device Role / Timing Role: Acts as level translator and noise-immune receiver using REF as precise decision threshold. Use Value: Input bias current <25nA avoids loading high-impedance sources; 8mA drive capability directly interfaces with MCU GPIO. |
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 | 0.4% initial accuracy, 6ppm/°C tempco vs. B grade's 1% and 100ppm/°C | Required for high-accuracy data acquisition where reference drift must be minimized over temperature | Select A grade when long-term stability and tighter tolerance justify cost premium |
| TLV4041IDBVR | Separate comparator only (no integrated reference); 36µA IQ, 300ns tPD, but requires external 2.5V reference | Used when reference voltage must be programmable or shared across multiple comparators | Choose TLV4041 when design flexibility outweighs integration benefit and board space is not constrained |
Compared with MAX9050AEUK-T, the MAX9050BEUK trades reference precision for lower cost and adequate stability in consumer-grade battery monitors; versus TLV4041IDBVR, it reduces component count and layout complexity at the expense of reference configurability.
Availability
MAX9050BEUK is available at Aetrix Electronics and suitable for precision battery monitoring, industrial sensor threshold detection, and portable gas detector alarms requiring stable component supply with guaranteed long-term availability.
Supply support for MAX9050BEUK 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, medical, and communications applications.
The MAX9039–MAX9053 family was engineered to integrate micropower comparators and laser-trimmed references into ultra-small packages for space- and energy-constrained portable instrumentation and sensor nodes.
FAQ
What is the reference voltage accuracy and temperature coefficient of the MAX9050BEUK?
The MAX9050BEUK is a B-grade device with 2.500V reference output specified at ±1% initial accuracy over temperature and 100ppm/°C typical temperature coefficient. These values are confirmed in the Electrical Characteristics table for B grade under "Voltage Reference" section of the datasheet, with test conditions at TA = −40°C to +85°C and VCC = 5V.
Can the MAX9050BEUK operate from a 2.5V supply?
No - the MAX9050BEUK has a minimum supply voltage of 2.7V per its Absolute Maximum Ratings and Electrical Characteristics tables. While the MAX9039–MAX9043 variants support 2.5V, the MAX9050–MAX9053 series begins at 2.7V to ensure proper reference regulation and comparator performance across temperature.
Does the MAX9050BEUK require an external capacitor on the REF pin?
No external capacitor is required on the REF pin of the MAX9050BEUK. The device is internally compensated and remains stable with capacitive loads from 0 to 4.7nF, as verified in the "Capacitive-Load Stability Range" specification. An optional capacitor may improve transient response under step-load conditions but is not necessary for basic operation.
What is the maximum load current the MAX9050BEUK reference can source or sink?
The MAX9050BEUK reference can source or sink up to ±500µA while maintaining output voltage regulation within spec. This is explicitly stated in the "Voltage Reference" section of the datasheet under "Load Regulation" and "Output Short-Circuit Current", with load regulation tested across the full ±500µA range.
How does the internal hysteresis of the MAX9050BEUK affect its use in noisy environments?
The MAX9050BEUK includes fixed ±3mV internal hysteresis, which creates a 6mV dead band around the switching threshold. This prevents output oscillation caused by input noise below 3mV peak-to-peak amplitude - a key advantage in EMI-prone industrial sensor interfaces where external hysteresis resistors would increase component count and board area.
MAX9050BEUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 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-23-5
MAX9050BEUK FAQ
1.How can I place an order for MAX9050BEUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9050BEUK 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 reliable?
The price and inventory of MAX9050BEUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9050BEUK is usually 5 days.
3.What payment methods are accepted for MAX9050BEUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9050BEUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9050BEUK?
MAX9050BEUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9050BEUK 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?
For technical support, including MAX9050BEUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9050BEUK requirements.
6.How does Aetrix verify that MAX9050BEUK is sourced from the original manufacturer or authorized distributors?
All MAX9050BEUK 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 meets industry standards.
7.What is the process for return or replacement of MAX9050BEUK?
All MAX9050BEUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX9050BEUK, 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 part is unused and in its original packaging.
Return procedure for MAX9050BEUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9050BEUK Tags
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