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Analog Devices Inc./Maxim Integrated MAX9043BEUB+
- Part No.:
- MAX9043BEUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX9043BEUB+.pdf
- Description:
- IC COMPARATR 2 W/VOLT REF 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:126
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Product details
Overview
MAX9043BEUB+ from Analog Devices is a dual micropower comparator with integrated 2.048V precision voltage reference in a 10-pin µMAX package. It operates from 2.5V to 5.5V, draws only 55µA supply current, features 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 MAX9043BEUB+ datasheet, MAX9043BEUB+ pinout, MAX9043BEUB+ application, or MAX9043BEUB+ equivalent, this page delivers verified circuit role (dual comparator + reference), package mapping (10-pin µMAX), pin-level terminal functions, A-grade reference accuracy (±0.4% initial, 6ppm/°C), and real-world use cases including window comparators and IR receivers.
Technical Context
The MAX9043BEUB+ integrates two independent comparators sharing one high-stability 2.048V reference. Each comparator has rail-to-rail input range extending 250mV beyond supply rails, 1.0pA typical input bias current, and ±7.0mV max input offset over –40°C to +85°C. The reference uses laser-trimmed thin-film resistors and curvature correction for 6ppm/°C tempco (A grade).
Its push-pull output stage sinks/sources up to 8mA with VOL ≤ 0.55V at 5V/8mA and VOH ≥ 4.45V under same conditions. Internal ±3mV hysteresis eliminates oscillation on slow signals, and supply current remains stable across switching frequencies up to 1MHz - critical for low-noise, long-life battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports both 3V and 5V systems without level-shifting. |
| Supply Current | 55µA typical at 2.7V - enables >1-year operation on coin-cell batteries in always-on monitoring. |
| Reference Voltage | 2.048V ±0.4% (A grade) - matches standard 12-bit DAC full-scale for precise ADC reference or threshold setting. |
| Propagation Delay | 400ns at 100mV overdrive - ensures fast response for pulse-width or edge-detection timing. |
| Input Offset Voltage | ±7.0mV max (–40°C to +85°C) - maintains accuracy in industrial temperature environments. |
| Output Drive | Rail-to-rail push-pull, 8mA sink/source - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers. |
| Capacitive Load Stability | Stable with 0–4.7nF on REF - allows local decoupling or filtering without oscillation risk. |
Pinout & Package
MAX9043BEUB+ is housed in a 10-pin µMAX package (5.0mm × 3.0mm, 0.8mm height), RoHS-compliant, with exposed paddle for thermal performance. Pin numbering follows standard µMAX top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output - push-pull, rail-to-rail, drives loads up to 8mA. |
| 2 | INA+ | Comparator A noninverting input - rail-to-rail CMVR, 1.0pA bias current. |
| 3 | INB− | Comparator B inverting input - uncommitted, supports flexible hysteresis or window configurations. |
| 4 | INB+ | Comparator B noninverting input - rail-to-rail CMVR, matched to INA+ for differential sensing. |
| 5 | VCC | Positive supply - accepts 2.5V–5.5V; powers both comparators and reference. |
| 6 | REF | Precision reference output - 2.048V, ±0.4%, 6ppm/°C, sources/sinks 500µA. |
| 7 | VEE | Negative supply - typically ground; defines reference and comparator common-mode baseline. |
| 8 | OUTB | Comparator B output - independent push-pull output, synchronized switching not required. |
| 9 | INA− | Comparator A inverting input - uncommitted, enables custom feedback or reference routing. |
| 10 | N.C. | No connection - not internally bonded; must be left floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparator + reference integration | Reduces board space by 40% vs. discrete solutions; eliminates inter-component drift in thresholding circuits. |
| 55µA total supply current | Enables ultra-low-power wake-up detection in IoT sensors with <1µA average system current. |
| ±3mV internal hysteresis | Prevents chatter on noisy or slowly varying inputs - no external resistor network required for basic stability. |
| 2.048V reference voltage | Matches 12-bit DAC full-scale (4096 steps × 0.5mV); simplifies calibration in data acquisition front-ends. |
| Rail-to-rail I/O with 8mA drive | Directly interfaces with 1.8V/3.3V/5V logic families and small-signal transducers without level shifters. |
Applications
| IR Receivers | Window Comparators |
|---|---|
Use Scenario: Demodulating pulsed infrared signals in remote control receivers where ambient light induces slow-varying DC offsets. IC Role / Device Role / Timing Role: Dual comparator monitors signal against upper/lower thresholds derived from REF; enables clean digital recovery of burst codes. Use Value: Internal hysteresis rejects ambient noise; 400ns delay preserves 38kHz carrier fidelity; 2.048V reference sets precise, temperature-stable trip points. | Use Scenario: Monitoring battery voltage within safe operating limits (e.g., 3.0V–4.2V for Li-ion) to trigger charge enable/disable or low-battery alerts. IC Role / Device Role / Timing Role: One comparator detects upper limit (INB+ tied to REF via resistor divider), second detects lower limit (INA+ tied to same divider); outputs OR'd externally. Use Value: Single 2.048V reference ensures matched trip-point tracking; 55µA quiescent current extends battery life in maintenance-free deployments. |
| Precision Battery Management | Level Translators |
Use Scenario: Real-time cell voltage monitoring in multi-cell battery packs where microamp-level leakage must be avoided. IC Role / Device Role / Timing Role: Comparator compares cell voltage against REF-derived thresholds; reference supplies stable bias for analog front-end circuitry. Use Value: 1.0pA input bias prevents measurement error in high-impedance dividers; REF's 500µA sourcing capability powers auxiliary sense circuitry. | Use Scenario: Converting 5V logic signals to 3.3V or 1.8V domains in mixed-supply microcontroller systems. IC Role / Device Role / Timing Role: Comparator A used as level translator with REF as reference; OUTA drives low-voltage logic while powered from 5V rail. Use Value: Rail-to-rail output swing ensures full logic swing at target VDD; 400ns delay supports >1MHz data rates in UART or SPI isolation paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9042BEUA | Same dual comparator + 2.048V reference, but in 8-pin µMAX; IN− of Comparator B tied to REF internally. | Limited flexibility in window comparator design due to fixed INB− connection; unsuitable for fully independent dual thresholds. | Select MAX9042BEUA only when REF-referenced hysteresis is acceptable and board area is constrained. |
| TLV3702IDR | Low-power dual comparator (1.2µA/ch) with no integrated reference; requires external 2.048V source. | Higher BOM count and layout complexity; reference drift and noise degrade overall threshold accuracy. | Choose TLV3702IDR only if ultra-low supply current (<2µA) dominates over accuracy, size, and design simplicity. |
Compared with MAX9042BEUA, MAX9043BEUB+ offers fully uncommitted inputs for flexible hysteresis and window configurations; compared with TLV3702IDR, it eliminates external reference components and guarantees matched thermal drift between comparator and reference.
Availability
MAX9043BEUB+ 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 portable medical device programs.
Supply support for MAX9043BEUB+ 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 + reference ICs optimized for micropower, single-supply operation in space-constrained, battery-sensitive applications.
FAQ
What is the reference voltage tolerance and temperature coefficient of MAX9043BEUB+?
The MAX9043BEUB+ is an A-grade device with ±0.4% initial accuracy and a typical temperature coefficient of 6ppm/°C over –40°C to +85°C. These values are guaranteed by design and confirmed in the Electrical Characteristics table for MAX9040–MAX9043 A-grade parts. The reference remains stable with capacitive loads up to 4.7nF.
Does MAX9043BEUB+ support rail-to-rail input and output operation?
Yes, MAX9043BEUB+ supports rail-to-rail input operation with a common-mode range extending 250mV beyond both supply rails (VEE – 0.25V to VCC + 0.25V). Its outputs are push-pull rail-to-rail, capable of sinking and sourcing up to 8mA while maintaining VOL ≤ 0.55V and VOH ≥ 4.45V at VCC = 5V.
What is the supply current consumption of MAX9043BEUB+ at different voltages and temperatures?
MAX9043BEUB+ consumes 55µA typical at VCC = 2.7V and 60µA typical at VCC = 5V, over –40°C to +85°C. Supply current remains stable across switching frequencies up to 1MHz, with minimal increase - a key advantage for dynamic, low-noise power systems.
How is hysteresis implemented in MAX9043BEUB+, and can it be adjusted?
MAX9043BEUB+ includes fixed internal hysteresis of ±3mV per comparator. This eliminates output chatter on slow-moving or noisy inputs without external components. Additional hysteresis can be added using positive feedback resistors, as detailed in the Applications Information section of the MAX9043BEUB+ datasheet.
What package type and pin count does MAX9043BEUB+ use, and is it RoHS-compliant?
MAX9043BEUB+ uses a 10-pin µMAX package (5.0mm × 3.0mm, 0.8mm height) with exposed thermal paddle. The "+" suffix confirms it is lead(Pb)-free and RoHS-compliant. Pinout is fully documented in the Functional Diagrams and Pin Configurations sections of the official Analog Devices datasheet.
MAX9043BEUB+ 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
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 8mA
- Current - Output (Typ):
- 130µA
- 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
MAX9043BEUB+ FAQ
1.How can I place an order for MAX9043BEUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9043BEUB+ 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 MAX9043BEUB+ reliable?
The price and inventory of MAX9043BEUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9043BEUB+ is usually 5 days.
3.What payment methods are accepted for MAX9043BEUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9043BEUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9043BEUB+?
MAX9043BEUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9043BEUB+ 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 MAX9043BEUB+?
For technical support, including MAX9043BEUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9043BEUB+ requirements.
6.How does Aetrix verify that MAX9043BEUB+ is sourced from the original manufacturer or authorized distributors?
All MAX9043BEUB+ 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 MAX9043BEUB+ meets industry standards.
7.What is the process for return or replacement of MAX9043BEUB+?
All MAX9043BEUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9043BEUB+, 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 MAX9043BEUB+ part is unused and in its original packaging.
Return procedure for MAX9043BEUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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