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Analog Devices Inc./Maxim Integrated MAX9050AEUK-T
- Part No.:
- MAX9050AEUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX9050AEUK-T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,038
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Product details
Overview
MAX9050AEUK-T from Analog Devices is a micropower single-supply comparator with integrated 2.500V precision voltage reference, designed for battery-powered systems requiring rail-to-rail input/output operation, 40μA quiescent current, and ±0.4% initial reference accuracy (A grade). It delivers 400ns propagation delay and operates from 2.7V to 5.5V.
For engineers reviewing the MAX9050AEUK-T datasheet, MAX9050AEUK-T pinout, MAX9050AEUK-T application, or MAX9050AEUK-T equivalent, this page provides verified circuit role, validated SOT23-5 package mapping, confirmed A-grade reference specs (2.500V, 6ppm/°C), rail-to-rail comparator performance, and real-world use cases in precision battery management and level translation.
Technical Context
The MAX9050AEUK-T integrates one comparator and one series-mode voltage reference on a single CMOS die. Its comparator features rail-to-rail inputs extending 250mV beyond supply rails, 1.0pA typical input bias current, and ±3mV internal hysteresis - enabling clean switching with slow-moving signals without external components.
The reference employs laser-trimmed thin-film resistors and proprietary curvature-correction circuitry, delivering stable 2.500V output with 6ppm/°C typical tempco (A grade) and guaranteed stability with up to 4.7nF capacitive load - critical for low-noise sensor biasing and ADC reference applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct interface with Li-ion battery (3.0–4.2V) and 3.3V/5V logic without level shifters. |
| Quiescent Supply Current | 40μA at +25°C - enables >1-year battery life in coin-cell-powered IoT sensors operating at 1Hz wake-up rate. |
| Reference Output Voltage | 2.500V ±0.4% (A grade) - provides accurate, factory-trimmed reference for 12-bit ADCs requiring ≤1 LSB error at full scale. |
| Reference Tempco | 6ppm/°C (typ) - ensures <±0.15mV drift over –40°C to +85°C ambient, suitable for industrial temperature monitoring. |
| Propagation Delay | 400ns at 100mV overdrive - enables reliable detection of fast transients in digital line receivers and IR demodulation circuits. |
| Input Common-Mode Range | VEE – 0.25V to VCC + 0.25V - allows direct sensing of signals below ground or above VCC, e.g., in current-sense amplifier outputs. |
| Output Drive Capability | Rail-to-rail push-pull, ±8mA - drives standard logic inputs (TTL/CMOS), LED indicators, or small MOSFET gates without external buffers. |
Pinout & Package
MAX9050AEUK-T is housed in a RoHS-compliant 5-pin SOT23 package (outline 21-0057), footprint-compatible with industry-standard SOT-23-5 layouts and reflow-process qualified per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator Output | Rail-to-rail push-pull stage sourcing/sinking up to 8mA - directly interfaces with microcontroller GPIO or logic gate inputs. |
| 2 (IN−) | Comparator Inverting Input | Uncommitted input - accepts external feedback for hysteresis or configured as threshold reference when REF is used. |
| 3 (REF) | Voltage Reference Output | Stable 2.500V source capable of sinking/sourcing ±500μA - powers external sensors or serves as ADC reference. |
| 4 (VEE) | Negative Supply | Ground reference pin - must be connected to system GND; internal circuitry referenced to this node. |
| 5 (VCC) | Positive Supply | Primary power input - supplies both comparator and reference; bypass capacitor recommended at this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 40μA supply current enables multi-year operation on CR2032 batteries in always-on monitoring nodes. |
| Integrated Precision Reference | 2.500V A-grade reference eliminates need for external voltage reference IC, reducing BOM count and PCB area by ≥3 components. |
| Rail-to-Rail I/O | Input range extends 250mV beyond rails and output swings fully to VCC/VEE - simplifies signal conditioning in single-supply systems. |
| Internal Hysteresis | ±3mV built-in hysteresis prevents chatter on noisy or slowly varying inputs - removes need for external positive-feedback resistors. |
| Low-Supply-Glitch Output Stage | Minimal current surge during switching reduces supply noise - eliminates requirement for dedicated LDO or large bulk capacitance on VCC rail. |
Applications
| Precision Battery Management | Window Comparators |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger cutoff at 2.5V under-voltage and 4.3V over-voltage thresholds. IC Role / Device Role / Timing Role: Comparator compares cell voltage against 2.500V reference (scaled via resistor divider) to generate precise trip points; reference ensures stable threshold across temperature. Use Value: Enables ±10mV voltage threshold accuracy over –40°C to +85°C, meeting IEC 62133 safety requirements for portable electronics. | Use Scenario: Detecting if an analog sensor output falls within a defined safe operating band (e.g., 1.8V–2.2V for pressure transducer). IC Role / Device Role / Timing Role: Single MAX9050AEUK-T implements lower threshold; paired with second comparator (e.g., MAX9051) for upper threshold - both share same 2.500V reference for ratio-metric consistency. Use Value: Eliminates reference mismatch error between high/low comparators, improving window accuracy by >50% versus discrete references. |
| IR Receivers | Level Translators |
Use Scenario: Demodulating 38kHz infrared carrier signals in remote control receivers where ambient light causes slow DC drift. IC Role / Device Role / Timing Role: Comparator detects zero-crossings of AC-coupled IR signal; internal hysteresis rejects low-frequency noise while preserving pulse timing integrity. Use Value: 400ns propagation delay ensures <1% timing error at 38kHz, supporting NEC and RC-5 protocol compliance without additional timing compensation. | Use Scenario: Converting 5V logic signals to 3.3V microcontroller inputs in mixed-voltage embedded systems. IC Role / Device Role / Timing Role: Comparator uses 2.500V reference as threshold; 5V input applied to IN+, VEE = 0V, VCC = 3.3V - output swings rail-to-rail between 0V and 3.3V. Use Value: Achieves sub-100ns edge alignment between input and translated output, eliminating metastability in high-speed serial interfaces (e.g., UART at 1Mbps). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9051AEUT+T | 6-pin SOT23 with uncommitted IN−; identical reference (2.500V A grade) and comparator specs. | Requires external pull-down on IN− for single-threshold use; adds one passive component vs. MAX9050AEUK-T's internally tied IN− to REF. | Select when design requires flexible IN− configuration or future dual-threshold expansion. |
| TLV4041IDBVR | Single comparator only (no integrated reference); 1.5V to 5.5V supply; 650nA IQ; requires external 2.5V reference. | Higher power efficiency (nanoamp IQ) but increases BOM cost and layout complexity due to separate reference IC and decoupling. | Select for ultra-low-power (<1μA) applications where reference can be shared across multiple comparators. |
Compared with MAX9051AEUT+T, MAX9050AEUK-T offers simplified layout via REF-tied IN− and smaller SOT23-5 footprint; compared with TLV4041IDBVR, it trades 25μA higher IQ for significant system-level integration, reduced component count, and guaranteed reference-comparator tracking.
Availability
MAX9050AEUK-T is available at Aetrix Electronics and suitable for precision battery management, IR receivers, window comparators, and level translators requiring stable component supply across automotive, industrial, and medical device production programs.
Supply support for MAX9050AEUK-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 engineered specifically for space-constrained, battery-operated systems needing combined comparator and precision reference functionality in ultra-small packages - targeting wearables, portable instrumentation, and energy-harvesting sensors.
FAQ
What is the operating temperature range for MAX9050AEUK-T?
The MAX9050AEUK-T is specified for operation from –40°C to +85°C. This extended industrial temperature range ensures reliable performance in automotive cabin modules, outdoor IoT sensors, and industrial control panels where ambient conditions vary widely. The A-grade reference maintains its ±0.4% initial accuracy and 6ppm/°C tempco across this full range, as validated in the manufacturer's production test flow.
Does MAX9050AEUK-T require an external capacitor on the REF pin?
No, MAX9050AEUK-T does not require an external capacitor on the REF pin for stability. The internal reference is designed to remain stable with capacitive loads up to 4.7nF. However, adding a 100nF ceramic capacitor improves transient response during step-load changes - recommended for applications like ADC reference buffering where fast settling after power-up is critical. The capacitor has no effect on DC accuracy or long-term stability.
How is the IN− pin configured in MAX9050AEUK-T?
In MAX9050AEUK-T, the IN− pin is internally connected to the REF pin, forming a fixed 2.500V threshold for single-ended comparison. This configuration eliminates external resistor networks needed for threshold setting, reduces component count, and guarantees ratio-metric tracking between reference and comparator threshold. It differs from MAX9051AEUT+T, where IN− is uncommitted and requires external biasing.
Can MAX9050AEUK-T drive an LED directly?
Yes, MAX9050AEUK-T can drive a standard 2mA LED directly using its rail-to-rail push-pull output. With VCC = 3.3V and VEE = 0V, the output sinks up to 8mA at VOL ≤ 0.55V (at 5V supply) or ≤ 0.4V (at 2.7V supply), providing sufficient margin for red/green LEDs with forward voltages of 1.8–2.2V. For higher-current LEDs, add a series current-limiting resistor calculated as R = (VCC – VF) / ILED.
What is the maximum capacitive load the REF output can drive?
The REF output of MAX9050AEUK-T is stable with capacitive loads up to 4.7nF, as confirmed in the manufacturer's electrical characteristics table and typical operating curves. This allows direct connection to ADC reference inputs, op-amp non-inverting inputs, or RC filters without oscillation risk. Loads exceeding 4.7nF may cause peaking or instability; for larger capacitances, isolate the REF output with a unity-gain buffer or series resistor (e.g., 10Ω) followed by local decoupling.
MAX9050AEUK-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
- :
- 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
MAX9050AEUK-T FAQ
1.How can I place an order for MAX9050AEUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9050AEUK-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 MAX9050AEUK-T reliable?
The price and inventory of MAX9050AEUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9050AEUK-T is usually 5 days.
3.What payment methods are accepted for MAX9050AEUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9050AEUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9050AEUK-T?
MAX9050AEUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9050AEUK-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 MAX9050AEUK-T?
For technical support, including MAX9050AEUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9050AEUK-T requirements.
6.How does Aetrix verify that MAX9050AEUK-T is sourced from the original manufacturer or authorized distributors?
All MAX9050AEUK-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 MAX9050AEUK-T meets industry standards.
7.What is the process for return or replacement of MAX9050AEUK-T?
All MAX9050AEUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9050AEUK-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 MAX9050AEUK-T part is unused and in its original packaging.
Return procedure for MAX9050AEUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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