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Analog Devices Inc./Maxim Integrated MAX9024AUD+
- Part No.:
- MAX9024AUD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX9024AUD+.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,744
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Product details
Overview
MAX9024AUD+ from Analog Devices is a quad micropower comparator optimized for battery-powered portable systems, featuring 2.8μA supply current per comparator, 3μs propagation delay, 4mV internal hysteresis, rail-to-rail output swing, and operation from 2.5V to 5.5V single supply across -40°C to +125°C.
For engineers reviewing the MAX9024AUD+ datasheet, MAX9024AUD+ pinout, MAX9024AUD+ application, or MAX9024AUD+ equivalent, key selection criteria include ultra-low quiescent current, guaranteed hysteresis for noise immunity, wide input common-mode range (VSS to VDD – 1.1V), and TSSOP-14 packaging suitable for space-constrained industrial and automotive sensing designs.
Technical Context
The MAX9024AUD+ integrates four independent comparators sharing a common VDD and VSS, each with matched input offset voltage (±1mV typical), ±2nA input offset current, and 70dB CMRR over full temperature range. Its internal hysteresis is fixed at 4mV and non-adjustable, eliminating external feedback components for basic threshold detection.
Each comparator features no phase reversal under overdriven inputs, rail-to-rail output stage capable of sourcing/sinking 4mA while maintaining ≤400mV VOL/VOH, and stable operation with capacitive loads up to 150pF-enabling direct interface with microcontroller GPIOs and digital logic without buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply - supports Li-ion, coin-cell, and regulated 3.3V/5V rails without level shifting |
| Supply Current per Comparator | 2.8μA typical - enables >1-year battery life in always-on sensor wake-up circuits |
| Propagation Delay | 3μs at VOD = 100mV - sufficient for kHz-range signal discrimination in photodiode or analog sensor interfaces |
| Hysteresis | 4mV built-in - prevents chatter on slow-moving inputs like thermistor or potentiometer outputs |
| Input Common-Mode Range | VSS to VDD – 1.1V - accepts ground-referenced signals without rail-splitting in single-supply systems |
| Output Swing | Rail-to-rail - ensures full logic-level compatibility with 1.8V–5V MCUs and FPGAs |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
The MAX9024AUD+ is housed in a 14-pin TSSOP package (JEDEC MO-153, 5.0mm × 4.4mm × 1.2mm), RoHS-compliant, with exposed pad not connected internally. Pin pitch is 0.65mm; recommended PCB footprint follows Analog Devices U14+1 land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Comparator D output - open-drain compatible when pulled up; drives logic-high directly to VDD |
| 2 | IND− | Comparator D inverting input - accepts signals down to VSS; high impedance (80nA max bias) |
| 3 | IND+ | Comparator D noninverting input - matches IND− in offset and drift; enables differential thresholding |
| 4 | VSS | Negative supply - must be connected to system ground or negative rail; shared by all four comparators |
| 5 | VDD | Positive supply - bypass with 0.1μF ceramic capacitor close to pin; powers all comparator cores |
| 6 | INA+ | Comparator A noninverting input - electrically identical to INA−; used for reference or signal routing |
| 7 | INA− | Comparator A inverting input - low input capacitance (5pF) minimizes high-frequency noise coupling |
| 8 | OUTA | Comparator A output - rail-to-rail swing; sinks 4mA while holding VOL ≤ 400mV at TA = +125°C |
| 9 | OUTB | Comparator B output - independent switching; no crosstalk observed in layout with proper grounding |
| 10 | INB− | Comparator B inverting input - matched to INB+ for <1mV pair-to-pair offset mismatch |
| 11 | INB+ | Comparator B noninverting input - supports AC-coupled inputs via series capacitor and DC bias network |
| 12 | OUTC | Comparator C output - fully specified for rise/fall times ≤20ns into 15pF load |
| 13 | INC− | Comparator C inverting input - shares same ESD protection structure as other inputs (±20mA absolute max) |
| 14 | INC+ | Comparator C noninverting input - referenced to same VCM range as all inputs: VSS to VDD – 1.1V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 2.8μA per comparator enables multi-channel always-on monitoring with sub-12μA total quiescent draw |
| Built-in 4mV hysteresis | Eliminates need for external positive feedback resistors in threshold-detection applications |
| No phase reversal | Guaranteed correct output polarity even when inputs exceed common-mode range by >0.3V |
| Rail-to-rail output | Drives 1.8V, 3.3V, and 5V logic families directly without level-shifting circuitry |
| Wide input common-mode range | Accepts signals from ground up to 1.1V below VDD - simplifies sensor interfacing in single-supply systems |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
Use Scenario: Continuous voltage monitoring of Li-ion cell voltage and system supply rails in handheld medical devices. IC Role / Device Role / Timing Role: Quad comparator provides independent low-battery warning, overvoltage lockout, charge-complete flag, and system reset generation. Use Value: 2.8μA per channel enables 4-channel supervision with <12μA total current, extending battery life beyond 18 months in sleep mode. | Use Scenario: Threshold detection for analog outputs from temperature, pressure, and gas sensors in industrial IoT nodes. IC Role / Device Role / Timing Role: Each comparator monitors one sensor's conditioned output against a precision reference, triggering alerts on out-of-range conditions. Use Value: 4mV internal hysteresis rejects EMI-induced noise on long sensor cables without adding external components. |
| Photodiode Preamps | Threshold Detectors / Discriminators |
Use Scenario: Fast pulse detection in optical smoke detectors using transimpedance-amplified photodiode signals. IC Role / Device Role / Timing Role: Comparator A processes fast rising-edge pulses; remaining channels monitor ambient light baseline and power integrity. Use Value: 3μs propagation delay ensures reliable capture of >100kHz optical pulses while maintaining low power between events. | Use Scenario: Multi-level voltage discrimination in programmable logic controllers for analog input module fault detection. IC Role / Device Role / Timing Role: Four comparators implement high/low warning and alarm thresholds for 4–20mA loop receivers or RTD signal conditioners. Use Value: Matched input offset (<1mV) and hysteresis ensure consistent trip points across all four channels without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher supply current (250μA/comparator), no built-in hysteresis, wider supply range (2V–36V), open-collector outputs only | Requires external pull-ups and hysteresis resistors; suited for high-voltage industrial controls but not ultra-low-power portable use | Select LM339DR only when operating above 5.5V or requiring higher drive strength; not drop-in for MAX9024AUD+ due to current and output architecture differences |
| TLV3704IPW | Lower supply current (1.3μA/comparator), rail-to-rail input/output, but no built-in hysteresis and narrower temp range (–40°C to +125°C same, but not AEC-Q100 qualified) | Needs external hysteresis network; better for precision low-VOS apps but adds board area and component count | Choose TLV3704IPW when lowest possible current is critical and hysteresis can be added externally; MAX9024AUD+ saves BOM cost and layout space |
Compared with LM339DR and TLV3704IPW, the MAX9024AUD+ uniquely combines micropower operation, factory-trimmed hysteresis, rail-to-rail outputs, and automotive-grade temperature qualification in a single TSSOP-14 package-reducing design complexity for portable and harsh-environment sensing.
Availability
MAX9024AUD+ is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection, and threshold discriminators requiring stable component supply across automotive, industrial, and medical end equipment.
Supply support for MAX9024AUD+ 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 since 1965.
The MAX902x family was designed specifically for ultra-low-power, space-constrained threshold detection in portable and automotive systems-emphasizing micropower operation, integrated hysteresis, and robust single-supply functionality.
FAQ
What is the maximum capacitive load the MAX9024AUD+ can drive without oscillation?
The MAX9024AUD+ is characterized for stable operation with up to 150pF capacitive load on any output, as confirmed in the Electrical Characteristics table under "Maximum Capacitive Load." This specification holds across the full –40°C to +125°C temperature range and 2.5V–5.5V supply. Exceeding 150pF may cause ringing or delayed transitions; for heavier loads, add a small series resistor (e.g., 10–50Ω) near the output pin to isolate capacitance.
Does the MAX9024AUD+ require external hysteresis resistors for noise immunity?
No, the MAX9024AUD+ includes 4mV of factory-trimmed internal hysteresis per comparator, explicitly documented in the Electrical Characteristics table and Features section. This eliminates the need for external positive-feedback resistors in most threshold-detection applications. External hysteresis can be added if wider bands are required, but the internal 4mV is sufficient for rejecting noise on slow-moving signals such as thermistor or potentiometer outputs.
Can the MAX9024AUD+ operate from dual supplies?
Yes, the MAX9024AUD+ supports dual-supply operation from ±1.25V to ±2.75V, as stated in the Detailed Description section. However, its primary design focus is single-supply use (2.5V–5.5V), and all guaranteed specifications-including propagation delay, supply current, and input common-mode range-are validated under single-supply conditions. Dual-supply use is functional but not separately characterized across temperature.
What is the input offset voltage specification for the MAX9024AUD+ over temperature?
The MAX9024AUD+ has a guaranteed input offset voltage of ±8mV maximum over the full –40°C to +125°C range, with ±1mV typical at +25°C. Its offset voltage temperature coefficient is ±1μV/°C, meaning drift contributes less than ±0.13mV over the entire temperature span-making it suitable for precision threshold applications where stability matters more than absolute initial accuracy.
Is the MAX9024AUD+ pin-compatible with other quad comparators in the MAX902x family?
Yes, the MAX9024AUD+ shares identical pinout and footprint with the MAX9024ASD+T (SO-14 variant), as both belong to the MAX9024 quad comparator product line and follow the same Pin Description table. However, it is not pin-compatible with MAX9021 or MAX9022 variants due to differing channel counts and package pinouts-always verify against the MAX9024-specific top-view diagram before PCB layout.
MAX9024AUD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V, ±1.25V ~ 2.75V
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 0.003µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 5µA
- Current - Quiescent (Max):
- 100dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 8µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-TSSOP
MAX9024AUD+ FAQ
1.How can I place an order for MAX9024AUD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9024AUD+ 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 MAX9024AUD+ reliable?
The price and inventory of MAX9024AUD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9024AUD+ is usually 5 days.
3.What payment methods are accepted for MAX9024AUD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9024AUD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9024AUD+?
MAX9024AUD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9024AUD+ 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 MAX9024AUD+?
For technical support, including MAX9024AUD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9024AUD+ requirements.
6.How does Aetrix verify that MAX9024AUD+ is sourced from the original manufacturer or authorized distributors?
All MAX9024AUD+ 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 MAX9024AUD+ meets industry standards.
7.What is the process for return or replacement of MAX9024AUD+?
All MAX9024AUD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9024AUD+, 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 MAX9024AUD+ part is unused and in its original packaging.
Return procedure for MAX9024AUD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9024AUD+ Tags
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LM2903DR
Texas Instruments
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LM339DR
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LM339PWR
Texas Instruments
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LM393DT
STMicroelectronics
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LM2901PWR
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LM2903DT
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LM393DR
Texas Instruments
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LM239DR
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LM339APWR
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LM2903P
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LM393ADR
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NCX2200GMAZ
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