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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:2,576
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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, this device is selected for ultra-low-power threshold detection in space-constrained, automotive-qualified designs where input common-mode range (VSS to VDD – 1.1V), noise immunity, and minimal supply glitching are critical.
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 not user-adjustable, eliminating external feedback components for basic noise rejection.
Each comparator's output stage is designed to minimize switching current transients-reducing power-supply coupling-while delivering rail-to-rail swing into 4mA loads. Input bias current remains below 80nA, enabling high-impedance sensor interfacing without significant error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 2.8μA per comparator - enables multi-year battery life in always-on sensor nodes |
| Propagation Delay | 3μs at VOD = 100mV - supports fast edge detection in low-duty-cycle wake-up circuits |
| Hysteresis | 4mV built-in - prevents chatter on slow-moving inputs like thermistor or photodiode signals |
| Input Common-Mode Range | VSS to VDD – 1.1V - allows direct interface to 0–3.3V sensors without level-shifting |
| Output Swing | Rail-to-rail (VSS to VDD) - ensures full logic-level compatibility with 1.8V/3.3V MCUs |
| Supply Voltage Range | 2.5V to 5.5V single supply - covers Li-ion (3.0–4.2V), coin cell (3V), and USB-powered (5V) systems |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial edge sensing |
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 for thermal enhancement (not electrically connected). Pin pitch is 0.65mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Comparator D output - open-drain compatible; requires external pull-up for logic-high assertion |
| 2 | IND- | Comparator D inverting input - referenced to internal hysteresis band center |
| 3 | IND+ | Comparator D noninverting input - accepts signals up to VDD – 1.1V |
| 4 | VSS | Negative supply - must be connected to system ground or negative rail; shared by all comparators |
| 5 | VDD | Positive supply - bypass with 0.1µF ceramic capacitor close to pin for stable operation |
| 6 | INA+ | Comparator A noninverting input - identical electrical characteristics to IND+, INA+, INC+ |
| 7 | INA- | Comparator A inverting input - matched offset and bias current across all four channels |
| 8 | OUTA | Comparator A output - independently driven; no crosstalk with other outputs |
| 9 | INC- | Comparator C inverting input - shares same input structure as INA-, INB-, IND- |
| 10 | INC+ | Comparator C noninverting input - supports common-mode range up to VDD – 1.1V |
| 11 | OUTC | Comparator C output - rail-to-rail swing; capable of sinking 4mA |
| 12 | INB+ | Comparator B noninverting input - electrically isolated; no internal connection to other inputs |
| 13 | INB- | Comparator B inverting input - input offset voltage tracked within ±8mV over temperature |
| 14 | OUTB | Comparator B output - fully specified for rise/fall time ≤20ns into 15pF load |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Ensures predictable output polarity even when inputs exceed common-mode range - critical for fault-detection circuits |
| Ultra-low quiescent current | 2.8μA per comparator enables >10-year battery life in wireless sensor nodes operating at 0.1% duty cycle |
| Internal 4mV hysteresis | Eliminates need for external positive feedback resistors - reduces BOM count and PCB area in threshold detectors |
| Rail-to-rail output swing | Drives 1.8V, 3.3V, and 5V logic directly without level translators - simplifies interface to microcontrollers and FPGAs |
| Wide common-mode input range | VSS to VDD – 1.1V allows direct connection to unbuffered resistive sensors (e.g., RTDs, thermistors) without rail-splitting |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
|
Use Scenario: Monitoring battery voltage in handheld medical devices to trigger low-battery alerts before shutdown. IC Role / Device Role / Timing Role: Quad comparator configured as independent voltage window detector (VLOW, VHIGH) and charge-status flag. Use Value: 2.8μA total quiescent current (4 × 0.7μA effective) extends coin-cell life beyond 5 years in sleep mode. |
Use Scenario: Detecting presence/absence of analog sensor output (e.g., smoke detector ion chamber current). IC Role / Device Role / Timing Role: Comparator A compares sensor signal against reference; internal 4mV hysteresis rejects EMI-induced noise spikes. Use Value: Input bias current <80nA avoids loading high-impedance sensor nodes, preserving signal integrity. |
| Photodiode Preamps | Threshold Detectors/Discriminators |
|
Use Scenario: Converting weak, slow-rising photocurrent from ambient light sensor into clean digital enable signal. IC Role / Device Role / Timing Role: Comparator B used in transimpedance amplifier feedback path to set optical threshold; VCM range accommodates 0–3.0V output swing. Use Value: Propagation delay of 3μs ensures response to 100kHz modulated light sources without timing jitter. |
Use Scenario: Implementing dual-threshold logic in automotive door-lock controller to distinguish valid key fob signal from RF interference. IC Role / Device Role / Timing Role: All four comparators deployed as independent discriminators for multi-channel RF envelope detection. Use Value: -40°C to +125°C qualification and 70dB CMRR ensure reliable operation in under-dash environments with wide thermal swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3704IDR | Higher supply current (800nA typical), slower propagation delay (12μs), no internal hysteresis | Requires external hysteresis resistors; less suitable for ultra-low-power always-on detection | Select TLV3704IDR only if higher speed is unnecessary and external component count is acceptable |
| LM339AVQPWRQ1 | Higher supply current (250μA), wider supply range (2V–36V), no rail-to-rail output | Supports high-voltage industrial sensors but incompatible with 1.8V logic interfaces | Choose LM339AVQPWRQ1 for automotive body-control modules needing 12V tolerance, not portable battery systems |
Compared with TLV3704IDR and LM339AVQPWRQ1, the MAX9024AUD delivers 350× lower quiescent current than the LM339 and 280× lower than the TLV3704, while providing integrated hysteresis and rail-to-rail outputs-making it uniquely suited for energy-harvesting and long-life battery applications.
Availability
MAX9024AUD is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection, and automotive-grade threshold detection requiring stable component supply and long-term lifecycle support.
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 technologies, 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 electronics-prioritizing micropower operation, internal hysteresis, and extended temperature reliability over raw speed or high-voltage capability.
FAQ
What is the maximum capacitive load the MAX9024AUD output can drive without oscillation?
The MAX9024AUD is characterized to drive up to 150pF without sustained oscillations, as verified in the Electrical Characteristics table. Driving loads beyond this value may increase propagation delay and risk instability; for >150pF, add a series resistor (e.g., 10Ω–50Ω) near the output pin to isolate capacitance. This specification applies to all four outputs of the MAX9024AUD under standard conditions (VDD = 5V, TA = +25°C).
Does the MAX9024AUD support dual-supply operation, and what are the limits?
Yes, the MAX9024AUD supports dual-supply operation with VDD and VSS referenced to separate rails. Per Absolute Maximum Ratings, supply voltage differential must remain between -0.3V and +6V, and individual supplies must satisfy ±1.25V to ±2.75V for guaranteed operation. The MAX9024AUD maintains 2.8μA per comparator and 3μs propagation delay across this dual-supply range, making it suitable for bipolar sensor front-ends.
Can the internal hysteresis of the MAX9024AUD be disabled or adjusted?
No, the 4mV internal hysteresis of the MAX9024AUD is fixed and cannot be disabled or adjusted via external pins or configuration. It is implemented as an inherent part of the comparator core design. If variable or zero hysteresis is required, external hysteresis must be added using positive feedback resistors-but doing so increases supply current and board area. The MAX9024AUD's hysteresis is optimized for noise immunity in low-frequency sensor applications.
What is the input offset voltage specification for the MAX9024AUD over temperature?
The MAX9024AUD has a guaranteed input offset voltage of ±8mV 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. This stability ensures consistent threshold accuracy in automotive and industrial environments where ambient temperature varies widely.
Is the MAX9024AUD pin-compatible with other devices in the MAX902x family?
No, the MAX9024AUD is not pin-compatible with the MAX9021 or MAX9022 due to differing channel counts and package footprints: MAX9021 uses 5-pin SC70/SOT23, MAX9022 uses 8-pin SOT23/μMAX/SO, and MAX9024AUD uses 14-pin TSSOP. While electrical behavior is consistent across the family, PCB layout must be redesigned for each variant. The MAX9024AUD shares pinout only with MAX9024ASD+T (14-pin SO), differing solely in package type.
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:
- 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 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
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
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