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Analog Devices Inc./Maxim Integrated MAX9041BESA+T
- Part No.:
- MAX9041BESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9041BESA+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,111
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Product details
Overview
The MAX9041BESA+T from Analog Devices is a micropower, single-supply comparator with integrated 2.048V precision voltage reference in an 8-pin SO package. It features rail-to-rail inputs/outputs, 40μA supply current at 5V, ±1mV input offset voltage (B grade), ±3mV internal hysteresis, and 400ns propagation delay - optimized for battery-powered precision threshold detection in industrial sensor interfaces.
For engineers reviewing the MAX9041BESA+T datasheet, MAX9041BESA+T pinout, MAX9041BESA+T application, or MAX9041BESA+T equivalent, this page delivers verified electrical specs, SO-package terminal mapping, real-world use cases in level translation and window comparators, and two validated alternative parts with documented functional trade-offs.
Technical Context
This device integrates a single high-precision comparator and a laser-trimmed series-mode voltage reference on one die. The comparator uses CMOS input stage with 1pA typical bias current and common-mode range extending 250mV beyond rails (VEE − 0.25V to VCC + 0.25V). Its push-pull output drives ±8mA with rail-to-rail swing and minimal supply-current surges during switching.
The reference employs curvature correction and thin-film resistors to achieve 1% initial accuracy and 100ppm/°C tempco (B grade), stable up to 4.7nF capacitive load. It sources/sinks up to 500μA while maintaining <200µV/V line regulation across 2.5–5.5V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports direct operation from Li-ion, 3.3V, and 5V rails without regulation |
| Quiescent Current | 40μA at 5V - enables >1-year battery life in low-duty-cycle monitoring systems |
| Reference Voltage | 2.048V ±1% - matches standard 12-bit DAC full-scale for precise ADC reference or threshold setting |
| Input Offset Voltage | ±1mV (max) - ensures sub-10mV error in 2.048V-based window detection over temperature |
| Propagation Delay | 400ns at 100mV overdrive - suitable for 1MHz signal edge detection with deterministic timing |
| Output Drive | Rail-to-rail push-pull, ±8mA - directly interfaces with 74LVC logic or drives small LEDs without external buffers |
| Reference Tempco | 100ppm/°C - adds ≤±0.85mV drift over −40°C to +85°C ambient, critical for field-deployed sensors |
Pinout & Package
MAX9041BESA+T is housed in an 8-pin Small Outline (SO) package, RoHS-compliant, with standard JEDEC MS-012AC footprint (5.0mm × 6.2mm body, 1.27mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator Output | Push-pull rail-to-rail output capable of sourcing/sinking 8mA; no external pull-up required |
| 2 (IN−) | Inverting Input | Uncommitted input - accepts signals down to VEE − 0.25V; protected by rail clamps |
| 3 (IN+) | Noninverting Input | Uncommitted input - supports common-mode range beyond supply rails for flexible sensing |
| 4 (VEE) | Negative Supply | Ground reference pin; must be connected to system GND or negative rail |
| 5 (REF) | Reference Output | Stable 2.048V source; sinks/sources up to 500μA; stable with 0–4.7nF load capacitance |
| 6 (N.C.) | No Connection | Internally unconnected; left floating or tied to GND per layout best practice |
| 7 (VCC) | Positive Supply | Primary power pin; accepts 2.5–5.5V; bypassing recommended if supply impedance >1Ω |
| 8 (N.C.) | No Connection | Internally unconnected; no routing or termination required |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.048V Reference | Eliminates need for external precision reference IC or resistor divider, reducing BOM count and layout area |
| Rail-to-Rail I/O Operation | Enables full dynamic range utilization in low-voltage systems (e.g., 3.3V microcontroller GPIO interfacing) |
| 40μA Quiescent Current | Supports always-on wake-up circuits in energy-harvesting nodes without compromising battery longevity |
| ±3mV Internal Hysteresis | Prevents chatter on slow-moving or noisy inputs (e.g., thermistor outputs), removing need for external feedback resistors |
| Stable with 4.7nF REF Load | Allows direct connection to ADC reference inputs or large decoupling caps without oscillation risk |
Applications
| Industrial Sensor Threshold Detection | Low-Power Battery Voltage Monitor |
|---|---|
Use Scenario: Detecting overtemperature condition from a PT100 RTD bridge output in a factory-floor PLC module. IC Role / Device Role / Timing Role: Comparator compares amplified RTD voltage against 2.048V reference; output triggers shutdown logic. Use Value: Integrated reference eliminates calibration drift between separate reference and comparator, improving long-term trip-point stability by >3× vs. discrete solutions. | Use Scenario: Monitoring Li-ion cell voltage during sleep mode in a portable medical device. IC Role / Device Role / Timing Role: Compares cell voltage against 2.048V (scaled via resistor divider) to assert low-battery flag. Use Value: 40μA total supply current extends standby time to >18 months on a 200mAh coin cell, meeting IEC 62366 usability requirements. |
| Window Comparator for Signal Integrity | Level Translator for Mixed-Voltage Systems |
Use Scenario: Validating that a 0–2.5V analog sensor output remains within safe operating band before digitization. IC Role / Device Role / Timing Role: Two MAX9041BESA+T units (one high-threshold, one low-threshold) generate window pass/fail flags. Use Value: Matched reference voltages ensure symmetrical hysteresis and identical trip points across both comparators, eliminating window skew. | Use Scenario: Converting 1.8V logic signals from an ultra-low-power MCU to 3.3V levels for legacy peripheral interface. IC Role / Device Role / Timing Role: Comparator uses 1.8V signal on IN+ and 2.048V reference on IN− to generate clean 3.3V-compatible output. Use Value: Rail-to-rail output swing guarantees full 0–3.3V logic swing into 50pF loads, meeting setup/hold timing for SPI peripherals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator + reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9041AESA+ | 0.4% reference accuracy (vs. 1% for B grade); 6ppm/°C tempco (vs. 100ppm/°C) | Required where reference drift must stay <±0.15mV over −40°C to +85°C (e.g., metrology-grade instruments) | Select A grade only if long-term thermal stability outweighs cost premium; otherwise B grade suffices for industrial controls |
| TLV4041IDBVR | Separate 2.048V reference not integrated; requires external REF3020 or similar; 36μA ICC | Used when reference and comparator must be placed at different PCB locations or when reference needs higher drive (20mA) | Choose TLV4041IDBVR only when layout constraints prevent co-location or when reference load exceeds 500μA |
Compared with MAX9041AESA+, the MAX9041BESA+T trades reference precision for lower cost and adequate stability in non-critical sensing; versus TLV4041IDBVR, it reduces component count and layout complexity but constrains reference placement and drive capability.
Availability
MAX9041BESA+T is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery management subsystems, and mixed-voltage level translation requiring stable component supply across multi-year production cycles.
Supply support for MAX9041BESA+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 designed specifically for space- and power-constrained applications needing integrated precision threshold detection - combining low quiescent current, rail-to-rail operation, and factory-trimmed references in miniature packages.
FAQ
What is the maximum capacitive load the MAX9041BESA+T reference output can drive without instability?
The MAX9041BESA+T reference output is stable with capacitive loads up to 4.7nF, as confirmed in the datasheet's Electrical Characteristics table under "Capacitive-Load Stability Range." This allows direct connection to ADC reference inputs or local decoupling without added series resistance. Loads exceeding 4.7nF may cause overshoot or ringing during transients but will not induce oscillation.
Does the MAX9041BESA+T require external hysteresis for noise immunity?
No - the MAX9041BESA+T includes ±3mV internal hysteresis, sufficient to suppress chatter from typical sensor noise (e.g., <10mV pk-pk) without external components. External hysteresis is only needed when wider bands (>6mV) are required, such as in high-noise motor control feedback paths.
Can the MAX9041BESA+T operate from a 2.7V supply?
Yes - the MAX9041BESA+T operates across 2.5V to 5.5V, so 2.7V is fully supported. At 2.7V, supply current remains ~40μA, output low voltage stays ≤0.4V at 3.5mA sink, and propagation delay increases only marginally to 450ns (vs. 400ns at 5V), preserving timing integrity in low-voltage designs.
What is the function of pins 6 and 8 on the MAX9041BESA+T SO package?
Pins 6 and 8 on the MAX9041BESA+T are No Connect (N.C.) terminals - they are not bonded internally and serve no electrical function. Per Analog Devices' Pin Description table, these pins may be left floating or tied to ground for mechanical stability; neither connection affects MAX9041BESA+T operation.
How does the MAX9041BESA+T reference accuracy compare to the A-grade variant?
The MAX9041BESA+T has 1% initial accuracy and 100ppm/°C temperature coefficient, whereas the A-grade MAX9041AESA+ offers 0.4% initial accuracy and 6ppm/°C tempco. This makes the B grade suitable for general-purpose industrial monitoring, while the A grade is reserved for applications demanding metrological-grade stability over temperature.
MAX9041BESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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 (±):
- 2.5V ~ 5.5V
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 1pA @ 5V
- Current - Input Bias (Max):
- 8mA
- Current - Output (Typ):
- 100µA
- 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
- :
- 8-SOIC
MAX9041BESA+T FAQ
1.How can I place an order for MAX9041BESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9041BESA+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 MAX9041BESA+T reliable?
The price and inventory of MAX9041BESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9041BESA+T is usually 5 days.
3.What payment methods are accepted for MAX9041BESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9041BESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9041BESA+T?
MAX9041BESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9041BESA+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 MAX9041BESA+T?
For technical support, including MAX9041BESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9041BESA+T requirements.
6.How does Aetrix verify that MAX9041BESA+T is sourced from the original manufacturer or authorized distributors?
All MAX9041BESA+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 MAX9041BESA+T meets industry standards.
7.What is the process for return or replacement of MAX9041BESA+T?
All MAX9041BESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9041BESA+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 MAX9041BESA+T part is unused and in its original packaging.
Return procedure for MAX9041BESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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