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Analog Devices Inc./Maxim Integrated MAX9043AEUB
- Part No.:
- MAX9043AEUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX9043AEUB.pdf
- Description:
- IC COMPARATR 2 W/VOLT REF 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,716
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Product details
Overview
MAX9043AEUB from Analog Devices is a dual micropower comparator with integrated 2.048V precision voltage reference, designed for single-supply operation from 2.5V to 5.5V. It delivers rail-to-rail inputs/outputs, 55μA supply current, ±3mV internal hysteresis, and 400ns propagation delay - enabling high-accuracy threshold detection in ultra-low-power battery systems.
For engineers reviewing the MAX9043AEUB datasheet, MAX9043AEUB pinout, MAX9043AEUB application, or MAX9043AEUB equivalent, this device is selected for precision window comparators, IR receiver signal conditioning, low-voltage level translation, and battery voltage monitoring where stable reference accuracy and minimal quiescent current are critical.
Technical Context
The MAX9043AEUB integrates two independent comparators sharing one laser-trimmed, curvature-corrected 2.048V reference. Its input stage supports common-mode voltages from (VEE − 0.25V) to (VCC + 0.25V), with typical input bias current of 1.0pA and offset voltage of ±0.5mV. Both comparator outputs feature rail-to-rail push-pull stages capable of sinking and sourcing up to 8mA.
Internal ±3mV hysteresis ensures noise-immune switching on slow-moving signals, while the unique output architecture minimizes supply current surges during transitions - reducing power-supply glitches without requiring large bypass capacitors. The reference is stable with capacitive loads up to 4.7nF and exhibits 6ppm/°C tempco (A grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports direct interface with 3V and 5V logic domains without level shifters. |
| Supply Current | 55μA typical at VCC = 5V - enables multi-year operation on coin-cell batteries in always-on sensing nodes. |
| Reference Voltage | 2.048V ±0.4% (A grade) - matches standard 12-bit DAC full-scale codes (2.048V = 1 LSB × 2¹¹), simplifying ADC reference alignment. |
| Propagation Delay | 400ns at 100mV overdrive - sufficient for sub-MHz signal monitoring while maintaining low power. |
| Input Offset Voltage | ±0.5mV typical - allows accurate detection of small differential signals (e.g., thermistor or current-sense amplifier outputs). |
| Output Drive | Rail-to-rail push-pull, ±8mA - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers. |
| Reference Tempco | 6ppm/°C typical - drift < ±0.5mV over −40°C to +85°C, ensuring stable thresholds across industrial temperature range. |
Pinout & Package
MAX9043AEUB is housed in a 10-pin μMAX® package (package code: UEB), measuring 3mm × 3mm × 0.8mm with exposed paddle for thermal performance. Pin numbering follows standard μMAX top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - must be decoupled locally; accepts 2.5V–5.5V single supply. |
| 2 | OUTA | Comparator A output - rail-to-rail push-pull, sinks/sources up to 8mA. |
| 3 | INA+ | Comparator A noninverting input - rail-to-rail common-mode range extends 250mV beyond rails. |
| 4 | INA− | Comparator A inverting input - uncommitted; may be tied to REF or external voltage. |
| 5 | REF | Precision 2.048V reference output - stable with 0–4.7nF load capacitance; sources/sinks ±500μA. |
| 6 | VEE | Negative supply (ground reference) - connects to system GND; not floating. |
| 7 | INB− | Comparator B inverting input - uncommitted; independent of INA−. |
| 8 | INB+ | Comparator B noninverting input - fully independent input path for second threshold comparison. |
| 9 | OUTB | Comparator B output - identical electrical characteristics to OUTA; enables dual-threshold (window) detection. |
| 10 | N.C. | No connection - internally unconnected; must remain floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparator + precision reference | Eliminates need for external reference IC and reduces BOM count by two components in window comparator designs. |
| 55μA total supply current | Enables continuous monitoring in energy-harvesting or coin-cell-powered IoT sensors with >5-year battery life. |
| Rail-to-rail I/O with 250mV beyond-rail CMVR | Allows direct sensing of signals near supply rails - e.g., detecting battery voltage drop to 0.2V above GND. |
| Internal ±3mV hysteresis | Prevents chatter on noisy or slowly varying inputs (e.g., thermistor outputs), removing need for external feedback resistors. |
| Stable with 4.7nF REF load capacitance | Permits local filtering of reference output without risk of oscillation - critical for noise-sensitive ADC reference applications. |
| 6ppm/°C reference tempco (A grade) | Ensures < ±0.35mV reference drift over full −40°C to +85°C range - meets industrial-grade accuracy requirements. |
Applications
| Precision Battery Management | Window Comparators |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger cutoff at 4.2V (overvoltage) and 2.8V (undervoltage). IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper/lower thresholds derived from internal 2.048V reference via resistor dividers. Use Value: Eliminates external reference and two discrete comparators, reducing PCB area by 40% and improving threshold matching via shared reference. | Use Scenario: Detecting valid signal presence in industrial analog sensor interfaces (e.g., 4–20mA loop receivers). IC Role / Device Role / Timing Role: One comparator monitors upper limit, the other lower limit; ANDed outputs indicate "in-window" condition. Use Value: Internal matched reference ensures < 0.1% threshold mismatch between high/low comparators - critical for tight window tolerances. |
| IR Receivers | Level Translators |
Use Scenario: Demodulating 38kHz IR carrier bursts in remote control receivers under variable ambient light conditions. IC Role / Device Role / Timing Role: Comparator detects AC-coupled IR signal envelope against DC-biased threshold set by REF. Use Value: 400ns propagation delay preserves burst timing integrity; rail-to-rail output directly interfaces with 3.3V microcontroller GPIO. | Use Scenario: Converting 1.8V logic signals to 3.3V domain in mixed-voltage FPGA I/O banks. IC Role / Device Role / Timing Role: Comparator uses 1.8V signal as IN+ and 2.048V REF as threshold to generate clean 3.3V-compatible output. Use Value: 55μA quiescent current avoids loading weak 1.8V sources; push-pull output eliminates need for pull-up resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator-with-reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9043BEUB | B-grade reference (±1% initial accuracy, 100ppm/°C tempco) vs. A-grade (±0.4%, 6ppm/°C); otherwise identical pinout, specs, and functionality. | Suitable for cost-sensitive consumer applications where ±10mV reference error is acceptable. | Select MAX9043BEUB only if reference accuracy requirements are relaxed; no PCB changes required. |
| TLV3702IDR | Single-supply dual comparator only (no integrated reference); requires external 2.048V reference (e.g., REF3020); higher supply current (80μA). | Used when reference flexibility (e.g., adjustable or different voltage) is needed, or when existing BOM already includes REF3020. | Choose TLV3702IDR only when reference voltage must be programmable or sourced separately; adds two components and layout area. |
Compared with MAX9043BEUB, the MAX9043AEUB provides tighter reference accuracy and stability for precision measurement; compared with TLV3702IDR, it reduces component count and improves threshold matching but fixes reference voltage at 2.048V.
Availability
MAX9043AEUB is available at Aetrix Electronics and suitable for precision battery management, window comparator circuits, IR receiver front-ends, and low-voltage level translation requiring stable component supply and guaranteed long-term availability.
Supply support for MAX9043AEUB 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-plus-reference solutions optimized for ultra-low-power, space-constrained applications in portable and battery-operated systems.
FAQ
What is the reference voltage accuracy and temperature coefficient of the MAX9043AEUB?
The MAX9043AEUB features an A-grade 2.048V reference with ±0.4% initial accuracy over temperature and a typical temperature coefficient of 6ppm/°C. This specification is guaranteed across the −40°C to +85°C operating range and enables stable threshold generation in industrial environments without calibration.
Can the MAX9043AEUB operate from a 2.7V supply?
Yes, the MAX9043AEUB operates from 2.5V to 5.5V, so it functions reliably at 2.7V. At this voltage, supply current remains 55μA typical, and output drive capability is maintained at ±3.5mA - sufficient for driving most logic inputs and small loads in low-voltage systems.
Does the MAX9043AEUB require an external capacitor on the REF pin?
No, the MAX9043AEUB reference is stable without an external capacitor and supports capacitive loads up to 4.7nF. An output capacitor is optional and recommended only in transient-heavy applications (e.g., fast load switching) to reduce overshoot; it is not required for basic stability.
How are the two comparators configured in the MAX9043AEUB?
The MAX9043AEUB contains two fully independent comparators (OUTA/INA+/INA− and OUTB/INB+/INB−). Both share the same REF pin but have uncommitted inverting inputs, allowing flexible configuration - e.g., one comparator for upper threshold, the other for lower threshold in a window detector.
Is the MAX9043AEUB pin-compatible with other devices in the MAX90xx family?
The MAX9043AEUB uses a 10-pin μMAX package and is pin-compatible with MAX9043BEUB (same package, B-grade reference) and MAX9053AEUB (2.500V reference). It is not pin-compatible with 8-pin μMAX variants (e.g., MAX9042AEUA) due to differing pin count and assignment.
MAX9043AEUB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 8mA
- Current - Output (Typ):
- 85µA
- 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
- :
- 10-uMAX/uSOP
MAX9043AEUB FAQ
1.How can I place an order for MAX9043AEUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9043AEUB 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 MAX9043AEUB reliable?
The price and inventory of MAX9043AEUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9043AEUB is usually 5 days.
3.What payment methods are accepted for MAX9043AEUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9043AEUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9043AEUB?
MAX9043AEUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9043AEUB 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 MAX9043AEUB?
For technical support, including MAX9043AEUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9043AEUB requirements.
6.How does Aetrix verify that MAX9043AEUB is sourced from the original manufacturer or authorized distributors?
All MAX9043AEUB 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 MAX9043AEUB meets industry standards.
7.What is the process for return or replacement of MAX9043AEUB?
All MAX9043AEUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX9043AEUB, 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 MAX9043AEUB part is unused and in its original packaging.
Return procedure for MAX9043AEUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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