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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:1,557
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Product details
Overview
MAX9041BESA-T from Analog Devices is a micropower single-supply comparator with integrated 2.048V precision voltage reference, designed for battery-operated systems requiring rail-to-rail input/output operation, 40μA quiescent current, ±1mV input offset voltage (B grade), and 400ns propagation delay. It serves as a compact signal threshold detector in low-power sensor interfaces and portable instrumentation.
For engineers reviewing the MAX9041BESA-T datasheet, MAX9041BESA-T pinout, MAX9041BESA-T application, or MAX9041BESA-T equivalent, this page delivers verified electrical specifications, SO-8 package terminal mapping, real-world use scenarios for precision level detection, and two validated alternative parts with documented technical and application differences.
Technical Context
The MAX9041BESA-T integrates one rail-to-rail comparator and a laser-trimmed series-mode voltage reference in a single SO-8 package. Its comparator features internal ±3mV hysteresis, 1.0pA typical input bias current, and a common-mode input range extending 250mV beyond both supply rails (VEE − 0.25V to VCC + 0.25V).
The 2.048V reference provides 1% initial accuracy (B grade) and 100ppm/°C temperature coefficient, stable under capacitive loads up to 4.7nF and capable of sourcing/sinking ±500μA. The push-pull output drives up to 8mA with VOL = 0.55V (at 5V, 8mA sink) and VOH = 4.45V (at 5V, 8mA source).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports direct interface with 3V and 5V logic without level-shifting circuitry |
| Quiescent Supply Current | 40μA at TA = +25°C - enables multi-year battery life in always-on monitoring applications |
| Reference Output Voltage | 2.048V ±1% (B grade) - matches standard 12-bit DAC full-scale codes (2.048V = 1 LSB × 2¹¹) |
| Input Offset Voltage | ±1mV (max, B grade) - ensures accurate threshold detection down to sub-millivolt signal levels |
| Propagation Delay | 400ns at 100mV overdrive - suitable for medium-speed digital signal conditioning and window detection |
| Output Drive Capability | Rail-to-rail push-pull, ±8mA - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers |
| Reference Tempco | 100ppm/°C (B grade) - introduces ≤±0.85mV drift over −40°C to +85°C operating range |
Pinout & Package
MAX9041BESA-T is housed in an 8-pin SO (Small Outline) package with standard 150mil width and 0.050" pitch. Pin 1 is marked by a beveled corner or dot; the package is RoHS-compliant and rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator Output | Push-pull rail-to-rail output stage; sinks/sources up to 8mA; no external pull-up required |
| 2 (IN−) | Comparator Inverting Input | Uncommitted input; accepts signals from VEE − 0.25V to VCC + 0.25V; 1.0pA typical bias current |
| 3 (IN+) | Comparator Noninverting Input | Uncommitted input; identical common-mode range and bias current as IN− |
| 4 (VEE) | Negative Supply | Ground reference for single-supply operation; must be connected to system GND |
| 5 (REF) | Voltage Reference Output | Stable 2.048V output; sources/sinks ±500μA; stable with 0–4.7nF load capacitance |
| 6 (N.C.) | No Connection | Internally unconnected; must remain floating or tied to GND per layout best practice |
| 7 (VCC) | Positive Supply | Accepts 2.5V–5.5V; powers both comparator and reference; bypassing recommended |
| 8 (N.C.) | No Connection | Internally unconnected; must remain floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Integrated comparator + reference | Eliminates discrete reference IC and layout routing, reducing BOM count and board area by ≥2 components |
| Rail-to-rail I/O with extended CMVR | Enables direct sensing of signals near supply rails (e.g., battery voltage monitoring down to 0.25V above GND) |
| 40μA quiescent current | Reduces average power to <200μW at 5V, critical for coin-cell-powered IoT endpoints |
| Internal ±3mV hysteresis | Prevents output chatter on slow-moving or noisy inputs without external feedback resistors |
| Low-glitch switching architecture | Minimizes supply current surges during transitions, easing power rail decoupling requirements |
Applications
| Portable Battery Monitoring | Industrial Sensor Threshold Detection |
|---|---|
Use Scenario: Real-time monitoring of Li-ion cell voltage during charge/discharge cycles in handheld medical devices. IC Role / Device Role / Timing Role: Comparator compares cell voltage against 2.048V reference to trigger low-battery alerts; reference provides stable trip point independent of supply variation. Use Value: Enables accurate 3.0V–4.2V cell state-of-charge estimation using a single 2.048V threshold, eliminating need for external precision resistor dividers. | Use Scenario: Detecting overtemperature conditions in motor control PCBs using NTC thermistor voltage divider outputs. IC Role / Device Role / Timing Role: Comparator monitors thermistor divider output; 2.048V reference sets fixed trip point; rail-to-rail inputs accommodate full 0–5V sensor swing. Use Value: Delivers consistent thermal shutdown behavior across supply voltage variations (2.5–5.5V) and temperature (−40°C to +85°C). |
| IR Receiver Signal Conditioning | Digital Line Receiver for Legacy Interfaces |
Use Scenario: Converting modulated IR photodiode current into clean digital pulses in remote control receivers. IC Role / Device Role / Timing Role: Comparator acts as high-gain, low-noise front-end amplifier/discriminator; reference sets DC bias level for AC-coupled IR signal. Use Value: 400ns propagation delay and internal hysteresis ensure reliable pulse edge detection even with weak or noisy IR bursts. | Use Scenario: Receiving TTL/CMOS-level serial data from legacy industrial sensors with marginal noise margins. IC Role / Device Role / Timing Role: Comparator functions as a robust line receiver; 2.048V reference defines precise logic-high threshold (e.g., >2.0V = HIGH), rejecting supply ripple. Use Value: Improves noise immunity over standard logic inputs by 300mV margin, reducing false triggers in electrically noisy factory environments. |
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 (A grade) vs. 1% (B grade); 6ppm/°C tempco vs. 100ppm/°C | Suitable for high-precision applications like calibration equipment where reference stability dominates system error budget | Select MAX9041AESA when reference accuracy and long-term drift are critical; MAX9041BESA-T offers cost advantage where ±1% suffices |
| TLV4041IDBVR | Single comparator only (no integrated reference); requires external 2.048V reference (e.g., REF3020); 350ns propagation delay; 8μA supply current | Better suited for ultra-low-power designs where reference is shared across multiple comparators or ADCs | Choose TLV4041IDBVR when system already includes a precision reference or demands <10μA total quiescent current |
Compared with MAX9041AESA, MAX9041BESA-T trades reference accuracy and temperature stability for lower cost and simplified BOM; versus TLV4041IDBVR, it eliminates external reference component count and layout complexity at the expense of higher quiescent current.
Availability
MAX9041BESA-T is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, battery management subsystems, and IR remote receivers requiring stable component supply and guaranteed long-term availability.
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 engineered to consolidate comparator and precision reference functions into space-constrained, battery-powered applications-reducing solution size while maintaining rail-to-rail performance and micropower efficiency.
FAQ
What is the reference voltage output of the MAX9041BESA-T?
The MAX9041BESA-T provides a precision 2.048V reference output with ±1% initial accuracy (B grade) and 100ppm/°C temperature coefficient. This voltage is laser-trimmed and curvature-corrected for stability across −40°C to +85°C, and remains valid for capacitive loads up to 4.7nF without oscillation.
Does the MAX9041BESA-T have rail-to-rail input capability?
Yes, the MAX9041BESA-T comparator features rail-to-rail inputs with a common-mode voltage range extending 250mV beyond both supply rails (VEE − 0.25V to VCC + 0.25V). This allows direct interfacing with sensors or signals operating near ground or VCC, such as battery voltage monitoring or thermistor dividers.
What is the maximum output drive current of the MAX9041BESA-T comparator?
The MAX9041BESA-T comparator output can sink and source up to 8mA while maintaining rail-to-rail swing. At VCC = 5V, VOL is 0.55V (max) with 8mA sink current, and VOH is 4.45V (min) with 8mA source current-enabling direct drive of LEDs, logic inputs, or small gate drivers without external buffers.
Can the MAX9041BESA-T operate from a 3.3V supply?
Yes, the MAX9041BESA-T operates from a single 2.5V to 5.5V supply, making it fully compatible with 3.3V systems. At 3.3V, its 2.048V reference remains stable, and the comparator maintains rail-to-rail I/O performance with 40μA quiescent current and 400ns propagation delay-ideal for low-voltage portable designs.
How does the internal hysteresis of the MAX9041BESA-T improve system reliability?
The MAX9041BESA-T includes ±3mV internal hysteresis, which prevents output oscillation when input signals transition slowly or contain noise near the threshold. This eliminates the need for external positive-feedback resistors in most applications, simplifying design and improving immunity to EMI in battery-powered sensor nodes and industrial controls.
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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