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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:6,417
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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, featuring rail-to-rail inputs/outputs, 40μA supply current at 2.7V, ±0.5mV input offset voltage, 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 MAX9050AEUK+T datasheet, MAX9050AEUK+T pinout, MAX9050AEUK+T application, or MAX9050AEUK+T equivalent, this page delivers verified electrical specifications, SOT23-5 package mapping, A-grade reference accuracy (±0.4% initial, 6ppm/°C tempco), and real-world use context for embedded power monitoring and analog threshold detection.
Technical Context
The MAX9050AEUK+T integrates a single high-precision comparator with a laser-trimmed series-mode voltage reference. Its comparator features rail-to-rail input common-mode range extending 250mV beyond rails, 1.0pA typical input bias current, and internal ±3mV hysteresis to prevent chatter on slow signals.
The 2.500V reference uses proprietary curvature correction and thin-film resistors, delivering ±0.4% initial accuracy (A grade), 6ppm/°C typical temperature coefficient, and stability with up to 4.7nF capacitive load - enabling direct connection to ADC reference inputs or comparator thresholds without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct operation from Li-ion battery (3.0–4.2V) or regulated 3.3V/5V rails without level shifting. |
| Supply Current | 40μA at 2.7V - enables >1-year battery life in coin-cell-powered devices with 1Hz wake-up intervals. |
| Reference Voltage | 2.500V ±0.4% (A grade) - provides stable, accurate threshold for 12-bit ADCs requiring ≤1 LSB error at full scale. |
| Input Offset Voltage | ±0.5mV (typ) - allows reliable detection of sub-10mV signal differentials in precision sensor interfaces. |
| Propagation Delay | 400ns at 100mV overdrive - supports fast response in overvoltage protection circuits with <500ns fault-clearing latency. |
| Output Drive | Rail-to-rail push-pull, ±8mA - directly drives logic inputs (e.g., MCU GPIO), LEDs, or small MOSFET gates without external buffers. |
| Reference Tempco | 6ppm/°C (typ) - contributes <±0.15% drift over –40°C to +85°C, critical for automotive cabin sensors. |
Pinout & Package
MAX9050AEUK+T is housed in a RoHS-compliant 5-pin SOT23 package (package code: -; outline no. 21-0057), with 1.6mm × 2.9mm footprint and 0.95mm height - compatible with standard pick-and-place and reflow processes.
| 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 for logic interfacing. |
| 2 (IN−) | Comparator inverting input | Uncommitted input; accepts voltages from VEE − 0.25V to VCC + 0.25V; 1.0pA bias current preserves high-impedance sensor node integrity. |
| 3 (IN+) | Comparator noninverting input | Same rail-to-rail common-mode range as IN−; used for threshold comparison against reference or signal source. |
| 4 (VEE) | Negative supply | Ground reference (0V) in single-supply systems; must be connected to system GND for proper operation. |
| 5 (VCC) | Positive supply | Primary power input (2.7–5.5V); powers both comparator and reference; bypass capacitor recommended at point-of-load. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 40μA quiescent current enables multi-year battery life in portable medical monitors and IoT edge nodes. |
| Integrated 2.500V reference | A-grade (±0.4% initial, 6ppm/°C) eliminates need for external reference IC, reducing BOM count and PCB area by ≥2 components. |
| Rail-to-rail I/O | Input range extends 250mV beyond rails; output swings within 0.2V of rails at 8mA - maximizes dynamic range in low-voltage systems. |
| Internal hysteresis | ±3mV built-in hysteresis prevents oscillation on noisy or slowly varying inputs (e.g., thermistor outputs), removing need for external feedback resistors. |
| Glitch-free switching | Unique output stage limits supply current surges during transitions - reduces demand on decoupling caps and avoids noise coupling into sensitive analog sections. |
Applications
| Overvoltage Protection Circuit | Battery Cell Voltage Monitor |
|---|---|
Use Scenario: Detecting when a Li-ion cell exceeds 4.3V to trigger shutdown before thermal runaway. IC Role / Device Role / Timing Role: Comparator compares cell voltage against 2.500V reference scaled via resistor divider; output asserts fault signal within 400ns. Use Value: ±0.4% reference accuracy ensures trip point tolerance ≤±17mV at 4.3V, meeting IEC 62133 safety margin requirements. | Use Scenario: Monitoring individual cell voltage in 3S battery packs for state-of-charge estimation. IC Role / Device Role / Timing Role: Provides precise 2.500V reference to ADC while its comparator flags under-voltage (e.g., <2.8V) via GPIO interrupt. Use Value: 6ppm/°C tempco limits reference drift to <±0.15% over –40°C to +85°C, preserving SOC accuracy across automotive temperature ranges. |
| IR Receiver Signal Thresholding | Industrial Sensor Level Translator |
Use Scenario: Converting weak, noisy IR photodiode signals into clean digital pulses for microcontroller decoding. IC Role / Device Role / Timing Role: Comparator uses internal 2.500V reference as fixed threshold; rail-to-rail output directly interfaces 3.3V logic. Use Value: 1.0pA input bias current prevents loading of high-impedance photodiode node, maintaining signal amplitude and SNR. | Use Scenario: Translating 0–2.0V industrial sensor output to 0–3.3V logic levels for MCU ADC input. IC Role / Device Role / Timing Role: Comparator compares sensor output against 2.500V reference; output toggles at precise crossing point for timing-critical control loops. Use Value: ±0.5mV input offset ensures ≤0.1% threshold error at 2.0V input, enabling sub-0.1% measurement repeatability in process control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9040AEUK+T | 2.048V reference (vs. 2.500V); identical 40μA supply current, ±0.4% A-grade accuracy, and SOT23-5 package. | Optimized for 2.048V ADC references (e.g., 12-bit SAR converters with 2.048V full-scale range). | Select MAX9040AEUK+T when matching legacy 2.048V reference designs or interfacing with 2.048V-ranged ADCs. |
| TLV4041IDBVR | 2.5V reference (±0.5% initial), 65μA supply current, 850ns propagation delay, SOT23-5 package; no internal hysteresis. | Lower accuracy and slower response; requires external hysteresis network for noise immunity. | Choose TLV4041IDBVR only for cost-sensitive, non-precision applications where ±0.5% reference error and added design complexity are acceptable. |
Compared with MAX9040AEUK+T and TLV4041IDBVR, the MAX9050AEUK+T offers the highest reference accuracy (±0.4%), fastest propagation (400ns), and built-in hysteresis - making it optimal for safety-critical battery protection and high-resolution sensor monitoring where timing and threshold stability are paramount.
Availability
MAX9050AEUK+T is available at Aetrix Electronics and suitable for precision battery management, industrial sensor interfaces, and IR receiver circuits requiring stable component supply across extended temperature ranges (–40°C to +85°C).
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 MAX9050AEUK+T belongs to the MAX9038–MAX9053 micropower comparator + reference family, engineered specifically for ultra-low-power, space-constrained applications demanding high-accuracy voltage thresholds and minimal supply current.
FAQ
What is the operating temperature range for MAX9050AEUK+T?
The MAX9050AEUK+T is specified for operation from –40°C to +85°C. This industrial temperature range ensures reliable performance in automotive cabin modules, industrial PLC I/O cards, and outdoor IoT sensor nodes exposed to ambient thermal cycling. The A-grade reference maintains ±0.4% initial accuracy and 6ppm/°C tempco across this full range, as validated in the device's Electrical Characteristics table.
Does MAX9050AEUK+T require an external output capacitor on the REF pin?
No, the MAX9050AEUK+T does not require an external capacitor on the REF pin for stability. Its internal design is stable with capacitive loads up to 4.7nF, allowing direct connection to ADC reference inputs or comparator thresholds. An external capacitor may be added only to improve transient response during step-load changes - but omission introduces no oscillation or regulation issues in steady-state operation.
What is the maximum load current the MAX9050AEUK+T reference can source or sink?
The MAX9050AEUK+T reference can source or sink up to ±500μA of load current while maintaining specified accuracy. Load regulation is characterized at 2–4μV/μA for sourcing and 3.5–6μV/μA for sinking, meaning a full ±500μA load shift introduces ≤2.5mV total error - well within the ±10mV window allowed by its ±0.4% (±10mV) initial accuracy specification at 2.500V.
How does the internal hysteresis of MAX9050AEUK+T affect threshold accuracy?
The MAX9050AEUK+T includes fixed internal hysteresis of ±3mV, which creates a 6mV window between upper and lower switching thresholds. This hysteresis improves noise immunity but means the effective threshold is centered within that band. For applications requiring exact 2.500V switching (e.g., precision zero-crossing detection), external resistor networks can override or augment the internal hysteresis using positive feedback - as detailed in the MAX9050AEUK+T datasheet Figure 1.
Can MAX9050AEUK+T be used with a 3.3V supply and still achieve full rail-to-rail output swing?
Yes, the MAX9050AEUK+T achieves true rail-to-rail output swing with a 3.3V supply: VOH = 3.15V (min) at ISOURCE = 3.5mA and VOL = 0.15V (max) at ISINK = 3.5mA. This 3.0V output swing meets 3.3V LVCMOS logic high/low thresholds, enabling direct interfacing with STM32, ESP32, or other 3.3V microcontrollers without level-shifting circuitry - confirmed in the Electrical Characteristics table under "Output Voltage High" and "Output Voltage Low" parameters.
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:
- 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
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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