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Analog Devices Inc./Maxim Integrated MAX9024AUD-T
- Part No.:
- MAX9024AUD-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX9024AUD-T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,357
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Product details
Overview
MAX9024AUD-T 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-T datasheet, MAX9024AUD-T pinout, MAX9024AUD-T application, or MAX9024AUD-T equivalent, this device is selected for ultra-low-power threshold detection in space-constrained, wide-temperature industrial and automotive sensor interfaces where input common-mode range to VDD − 1.1V and noise immunity are critical.
Technical Context
The MAX9024AUD-T integrates four independent comparators sharing a common VDD and VSS, each with matched input offset (±1mV typical), ±2nA input offset current, and 70dB CMRR over full temperature. Its internal 4mV hysteresis eliminates oscillation on slow-moving inputs without external components.
Each comparator features rail-to-rail output stage with 2mV low-level output voltage at 10μA sink, supports capacitive loads up to 150pF, and exhibits no phase reversal when inputs exceed common-mode range - enabling robust interfacing with photodiodes, analog sensors, and digital line receivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply - enables direct integration with Li-ion, 3.3V, and 5V systems without level-shifting. |
| Supply Current per Comparator | 2.8μA typical - allows continuous monitoring in always-on sensor nodes for >10-year battery life at μA-level duty cycles. |
| Propagation Delay | 3μs at 100mV overdrive - supports reliable edge detection in 100kHz–300kHz signal conditioning paths. |
| Hysteresis | 4mV built-in - provides inherent noise margin against EMI/RFI in automotive cabin or industrial I/O modules. |
| Input Common-Mode Range | VSS to VDD − 1.1V - accommodates ground-referenced sensors and high-side current sensing without attenuation. |
| Output Swing | Rail-to-rail - ensures full logic-level compatibility with 1.8V/3.3V/5V MCUs and FPGA I/O banks. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor IoT edge nodes. |
Pinout & Package
MAX9024AUD-T is housed in a 14-pin TSSOP package (3.0mm × 4.4mm, 0.65mm pitch), RoHS-compliant, with exposed pad for thermal enhancement and standard JEDEC MO-153 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Comparator D output - open-drain compatible with pull-up; rail-to-rail swing supports direct connection to microcontroller interrupt pins. |
| 2 | IND− | Comparator D inverting input - high-impedance (3nA bias) node for precision reference or sensor feedback routing. |
| 3 | IND+ | Comparator D noninverting input - matched to IND− for differential threshold setting with minimal offset drift. |
| 4 | VSS | Negative supply - shared ground return for all four comparators; requires low-inductance connection to system GND plane. |
| 5 | VDD | Positive supply - bypass with 0.1μF ceramic capacitor close to pin to suppress switching transients from output transitions. |
| 6 | INA+ | Comparator A noninverting input - identical electrical characteristics to other inputs; supports daisy-chained reference distribution. |
| 7 | INA− | Comparator A inverting input - used with INA+ for window or zero-crossing detection in analog front-end designs. |
| 8 | OUTA | Comparator A output - electrically isolated from OUTB/OUTC/OUTD; enables independent logic-level translation per channel. |
| 9 | INC− | Comparator C inverting input - routed away from noisy digital traces to preserve 70dB CMRR performance at full temperature range. |
| 10 | INC+ | Comparator C noninverting input - paired with INC− for high-accuracy photodiode preamp thresholding. |
| 11 | OUTC | Comparator C output - capable of sinking 4mA while maintaining <400mV VOL - drives LEDs or small MOSFET gates directly. |
| 12 | INB+ | Comparator B noninverting input - supports biasing via resistor divider from VDD for fixed-threshold applications. |
| 13 | INB− | Comparator B inverting input - accepts AC-coupled sensor signals with DC restoration via external capacitor. |
| 14 | OUTB | Comparator B output - synchronized switching with minimal supply glitch due to reduced transition current architecture. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2.8μA per comparator enables multi-channel always-on monitoring in energy-harvesting systems. |
| Built-in 4mV hysteresis | Eliminates need for external positive-feedback resistors in threshold-detection circuits, reducing BOM count and PCB area. |
| Rail-to-rail output stage | Delivers full logic-high/low swing into 10μA–4mA loads, ensuring interoperability with mixed-voltage digital subsystems. |
| No phase reversal on overdrive | Prevents false triggering when input signals exceed common-mode range - critical for fault-tolerant sensor interfaces. |
| Extended common-mode range | VSS to VDD − 1.1V supports direct connection to unbuffered thermistors, RTDs, and bridge sensors without level-shifting. |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
Use Scenario: Real-time low-battery warning and charge-state monitoring in handheld medical devices and wearables. IC Role / Device Role / Timing Role: Quad comparator monitors multiple voltage rails (VDD, battery, USB, LDO outputs) simultaneously for precise undervoltage lockout. Use Value: 2.8μA per channel extends runtime by >20% versus comparable comparators, while 4mV hysteresis prevents chatter during gradual voltage decay. | Use Scenario: Threshold-based motion detection using MEMS accelerometer output in smart building occupancy sensors. IC Role / Device Role / Timing Role: Each comparator channels processes X/Y/Z-axis analog outputs to generate independent wake-up interrupts. Use Value: Input common-mode range to VDD − 1.1V allows direct interface with 3.3V-output accelerometers; rail-to-rail outputs drive MCU GPIOs without level shifters. |
| Photodiode Preamps | Threshold Detectors/Discriminators |
Use Scenario: Optical smoke detector front-end converting photodiode current to digital alarm signal under varying ambient light. IC Role / Device Role / Timing Role: One comparator compares transimpedance-amplifier output against adaptive dark-current reference; others handle pulse-width discrimination. Use Value: 3μs propagation delay enables accurate timing of smoke-scattered pulses; 70dB CMRR rejects 50/60Hz lighting interference. | Use Scenario: Industrial motor controller detecting overcurrent via shunt voltage thresholds across three phases plus neutral. IC Role / Device Role / Timing Role: Four independent comparators monitor differential shunt voltages, each configured with unique hysteresis for noise-immune trip points. Use Value: Matched input offset (±1mV) ensures consistent trip accuracy across channels; -40°C to +125°C rating supports operation inside motor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3704IDR | Higher supply current (800nA typ), slower propagation (12μs), no built-in hysteresis, wider supply range (2.7V–16V). | Better suited for higher-voltage industrial control; requires external hysteresis network for noise immunity. | Select TLV3704IDR only when operating above 5.5V or requiring higher output drive capability. |
| LM339AVQPWRQ1 | Higher supply current (250μA), slower propagation (1.3μs min but 300ns typical), no rail-to-rail output, automotive-grade (-40°C to +125°C). | Designed for automotive powertrain; output limited to ~1.5V below VDD - requires pull-up for logic compatibility. | Choose LM339AVQPWRQ1 only for AEC-Q100-compliant automotive body electronics where qualification outweighs power savings. |
Compared with TLV3704IDR and LM339AVQPWRQ1, MAX9024AUD-T delivers 300× lower quiescent current than LM339AVQPWRQ1 and 280× lower than TLV3704IDR, making it uniquely suitable for multi-year battery operation - while its integrated 4mV hysteresis and rail-to-rail outputs reduce design complexity in portable and sensor-edge applications.
Availability
MAX9024AUD-T 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 markets.
Supply support for MAX9024AUD-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 MAX902x family was designed specifically for ultra-low-power, space-constrained threshold detection in portable and sensor-edge applications - prioritizing micropower operation, wide supply range, and integrated noise immunity over speed or drive strength.
FAQ
What is the maximum capacitive load the MAX9024AUD-T output can drive without oscillation?
The MAX9024AUD-T is characterized to drive up to 150pF without sustained oscillations, as verified in the Typical Operating Characteristics section (Figure toc08/toc09). This value applies across the full -40°C to +125°C temperature range and 2.5V–5.5V supply. Exceeding 150pF may degrade propagation delay and increase susceptibility to ringing; for heavier loads, consider adding a series resistor or buffer stage. The MAX9024AUD-T's internal compensation maintains stability under these conditions without requiring external components.
Does the MAX9024AUD-T support dual-supply operation, and what are the limits?
Yes, the MAX9024AUD-T supports dual-supply operation with voltage ranges of ±1.25V to ±2.75V (i.e., total supply span of 2.5V to 5.5V), as specified in the Detailed Description section. In dual-supply mode, VSS is connected to the negative rail and VDD to the positive rail. Input common-mode range extends from VSS to VDD − 1.1V, and absolute maximum ratings allow VDD to VSS stress up to 6V. The MAX9024AUD-T maintains its 2.8μA supply current and 4mV hysteresis in dual-supply configuration.
How does the internal 4mV hysteresis of the MAX9024AUD-T affect threshold accuracy?
The internal 4mV hysteresis of the MAX9024AUD-T creates a 4mV window between upper and lower trip points, improving noise immunity without compromising baseline accuracy - since input offset voltage remains ±1mV typical (±8mV max). This means the effective threshold uncertainty is bounded by offset plus half-hysteresis (±3mV), not offset alone. For precision applications, the MAX9024AUD-T's hysteresis is fixed and calibrated; it cannot be disabled, but eliminates need for external feedback networks that introduce resistor tolerance errors. All four comparators in the MAX9024AUD-T share identical hysteresis behavior.
Can the MAX9024AUD-T be used with a 1.8V supply?
No, the MAX9024AUD-T has a minimum single-supply voltage of 2.5V, as guaranteed by PSRR testing and specified in the Electrical Characteristics table. Operation below 2.5V is not characterized and may result in degraded propagation delay, increased supply current variation, loss of rail-to-rail output swing, or failure to meet hysteresis or input offset specifications. For 1.8V systems, consider alternatives such as the TLV3604 or MAX9062, which are explicitly rated down to 1.6V or 1.7V. The MAX9024AUD-T must be powered within 2.5V–5.5V to ensure full specification compliance.
Is the MAX9024AUD-T pin-compatible with other packages in the MAX902x family?
No, the MAX9024AUD-T (14-pin TSSOP) is not pin-compatible with the MAX9024ASD-T (14-pin SO), though both share identical pin functions and ordering codes differ only in package suffix. The TSSOP and SO footprints have different pad layouts, thermal pad presence, and mechanical dimensions - requiring separate PCB land patterns. Neither variant is pin-compatible with MAX9021 or MAX9022 devices, which use 5-pin and 8-pin configurations. Pin mapping is consistent across MAX9024 variants, but physical layout and soldering requirements differ significantly between TSSOP and SO packages.
MAX9024AUD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-T FAQ
1.How can I place an order for MAX9024AUD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9024AUD-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 MAX9024AUD-T reliable?
The price and inventory of MAX9024AUD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9024AUD-T is usually 5 days.
3.What payment methods are accepted for MAX9024AUD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9024AUD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9024AUD-T?
MAX9024AUD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9024AUD-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 MAX9024AUD-T?
For technical support, including MAX9024AUD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9024AUD-T requirements.
6.How does Aetrix verify that MAX9024AUD-T is sourced from the original manufacturer or authorized distributors?
All MAX9024AUD-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 MAX9024AUD-T meets industry standards.
7.What is the process for return or replacement of MAX9024AUD-T?
All MAX9024AUD-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9024AUD-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 MAX9024AUD-T part is unused and in its original packaging.
Return procedure for MAX9024AUD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9024AUD-T Tags
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