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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:3,569
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Product details
Overview
MAX9043AEUB+ from Analog Devices is a dual micropower comparator with integrated 2.048V precision voltage reference, operating from 2.5V to 5.5V single supply, consuming only 55µA typical supply current, featuring rail-to-rail inputs/outputs, ±3mV internal hysteresis, and 400ns propagation delay - ideal for battery-powered precision threshold detection in portable instrumentation.
For engineers reviewing the MAX9043AEUB+ datasheet, MAX9043AEUB+ pinout, MAX9043AEUB+ application, or MAX9043AEUB+ equivalent, this page delivers verified electrical parameters, validated µMAX-10 package mapping, confirmed dual-comparator + reference functional integration, and real-world use cases in window detection, IR receivers, and level translation circuits.
Technical Context
The MAX9043AEUB+ integrates two independent comparators sharing one laser-trimmed 2.048V reference, with each comparator offering rail-to-rail input range extending 250mV beyond rails and push-pull output capable of sinking/sourcing 8mA. Its proprietary output stage minimizes supply current surges during switching, eliminating typical comparator-induced supply glitches.
Input bias current is 1.0pA (typ), offset voltage is ±0.5mV (typ), and common-mode rejection ratio exceeds 52dB. The reference features curvature correction, 0.4% initial accuracy (A grade), and 6ppm/°C tempco, stable with up to 4.7nF capacitive load on REF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports direct interface with 3V and 5V logic systems without level-shifting. |
| Supply Current | 55µA (typ) at VCC = 5V - enables multi-year operation on coin-cell batteries in always-on sensing nodes. |
| Reference Output | 2.048V ±0.4% (A grade) - precisely matches 12-bit DAC full-scale or ADC reference requirements. |
| Propagation Delay | 400ns at 100mV overdrive - sufficient for sub-MHz signal monitoring while maintaining low power. |
| Input Offset Voltage | ±0.5mV (typ) - ensures accurate threshold detection down to millivolt-level signals. |
| Output Drive | Rail-to-rail push-pull, ±8mA - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers. |
| Hysteresis | Internal ±3mV - prevents chatter on slow-moving or noisy input signals without external feedback components. |
Pinout & Package
The MAX9043AEUB+ is housed in a 10-pin µMAX package (outline 21-0061), RoHS-compliant, with exposed paddle for thermal enhancement and standard JEDEC reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - must be decoupled with 100nF capacitor near pin for noise immunity. |
| 2 | N.C. | No internal connection - left floating or tied to ground per layout best practice. |
| 3 | OUTB | Comparator B output - push-pull, rail-to-rail, sinks/sources up to 8mA. |
| 4 | INB− | Comparator B inverting input - high-impedance (1pA bias), accepts signals beyond rails by 250mV. |
| 5 | INA+ | Comparator A noninverting input - used with INB+ for independent dual-threshold detection. |
| 6 | INA− | Comparator A inverting input - uncommitted, allows flexible configuration as window or level detector. |
| 7 | REF | Precision 2.048V reference output - stable with 0–4.7nF load capacitance; sources/sinks ±500µA. |
| 8 | VEE | Negative supply (typically GND) - forms return path for both comparators and reference. |
| 9 | OUTA | Comparator A output - functionally identical to OUTB; enables simultaneous dual-output logic decisions. |
| 10 | INB+ | Comparator B noninverting input - paired with INA+ for independent signal comparison paths. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparator + reference integration | Reduces board area by >40% vs. discrete comparator + reference solutions in space-constrained wearables. |
| Rail-to-rail I/O with extended CMVR | Enables direct sensing of signals near supply rails (e.g., battery voltage monitoring from 0.25V to VCC+0.25V). |
| 55µA ultra-low quiescent current | Supports >10-year battery life in IoT sensor nodes operating at 10s-of-seconds wake-up intervals. |
| Proprietary glitch-free output stage | Eliminates need for large supply bypass caps, reducing BOM count and PCB footprint in portable designs. |
| Laser-trimmed 2.048V reference | Matches standard 12-bit DAC codes (2^12 × 2.048V = 8.388608V full scale), simplifying system calibration. |
Applications
| Precision Battery Management | Window Comparators |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles to trigger cutoff at 4.2V (full) and 2.8V (low). IC Role / Device Role / Timing Role: Dual comparator uses REF (2.048V) with resistor dividers to generate precise upper/lower thresholds; outputs drive enable/disable logic. Use Value: Achieves ±5mV total threshold accuracy over −40°C to +85°C, preventing overcharge or deep discharge without microcontroller intervention. | Use Scenario: Detecting valid signal presence in industrial analog input modules where input must stay within 1.8V–3.3V range. IC Role / Device Role / Timing Role: One comparator monitors upper limit (via REF + divider), second monitors lower limit; ANDed outputs indicate in-window condition. Use Value: Internal ±3mV hysteresis eliminates false triggers from noise, enabling reliable detection even with 100mV pk-pk interference. |
| IR Receivers | Level Translators |
Use Scenario: Demodulating 38kHz IR carrier bursts from remote controls in smart home hubs. IC Role / Device Role / Timing Role: Comparator A compares filtered IR envelope to REF-derived threshold; comparator B provides hysteresis-stabilized output timing. Use Value: 400ns propagation delay ensures accurate pulse-width decoding at 38kHz (26.3µs period), supporting NEC and RC-5 protocols. | Use Scenario: Converting 1.8V logic signals to 3.3V levels for interfacing low-power MCUs with legacy peripherals. IC Role / Device Role / Timing Role: REF (2.048V) sets threshold; comparator A detects 1.8V high, comparator B detects 0V low - dual outputs reconstruct clean 3.3V logic. Use Value: Rail-to-rail output swing guarantees full 0–3.3V swing into 10kΩ loads, meeting VIH/VIL specs of 3.3V CMOS interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator + 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) | Suitable for cost-sensitive industrial controls where ±10mV reference error is acceptable | Select MAX9043BEUB+ when reference stability is secondary to BOM cost reduction |
| TLV3702IDR | Single-supply dual comparator only (no integrated reference); requires external 2.048V reference | Higher design flexibility but increases component count and layout complexity | Choose TLV3702IDR when reference voltage must be programmable or shared across multiple ICs |
Compared with MAX9043BEUB+, the MAX9043AEUB+ delivers tighter reference accuracy and lower temperature drift for precision measurement; compared with TLV3702IDR, it reduces bill-of-materials count and PCB area by integrating the reference, though at fixed 2.048V output.
Availability
MAX9043AEUB+ is available at Aetrix Electronics and suitable for precision battery management, IR receiver modules, window comparator circuits, and level translation designs requiring stable component supply across production lifecycles.
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, headquartered in Wilmington, MA.
The MAX9038–MAX9043 family was designed specifically for ultra-low-power, space-constrained applications demanding integrated precision reference and comparator functionality 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. These specifications are guaranteed across the −40°C to +85°C operating range and enable high-accuracy threshold generation without external trimming.
Can the MAX9043AEUB+ operate from a 2.7V supply?
Yes, the MAX9043AEUB+ operates from 2.5V to 5.5V, so 2.7V is fully supported. At 2.7V, supply current remains at 55µA (typ), output low voltage is ≤0.4V at 3.5mA sink, and reference output stays stable at 2.048V ±0.4%, making it ideal for single-cell Li-ion or alkaline battery systems.
Does the MAX9043AEUB+ require an external capacitor on the REF pin?
No, the MAX9043AEUB+ reference is stable with 0–4.7nF capacitive load on the REF pin and does not require an external capacitor for frequency stability. However, adding a 100nF ceramic capacitor improves transient response during step-load changes, especially in systems with dynamic reference loading.
How are the two comparators configured in the MAX9043AEUB+?
The MAX9043AEUB+ contains two independent comparators (A and B) with uncommitted inverting inputs (INA−, INB−) and dedicated noninverting inputs (INA+, INB+). Both share the same 2.048V reference (REF) and supply rails (VCC, VEE), enabling flexible window, level-shift, or dual-threshold detection without external components.
What is the maximum capacitive load the MAX9043AEUB+ output can drive?
The MAX9043AEUB+ push-pull outputs are specified to drive ≥8mA into resistive loads and remain stable with up to 200pF capacitive load per output. Propagation delay increases to ~650ns at 200pF (VCC = 5V), but clean switching is maintained - larger loads require external buffer stages.
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:
- Active
- 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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