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Analog Devices Inc./Maxim Integrated MAX9032AKA-T
- Part No.:
- MAX9032AKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-8
- Datasheet:
-
MAX9032AKA-T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,505
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Product details
Overview
MAX9032AKA-T from Maxim Integrated is a dual, rail-to-rail output comparator optimized for single-supply operation from +2.5V to +5.5V, delivering 188ns propagation delay, 35μA per comparator supply current, and 4mV internal hysteresis across -40°C to +125°C. It operates in portable battery-powered systems where low power, small footprint, and noise-immune threshold detection are critical.
For engineers reviewing the MAX9032AKA-T datasheet, MAX9032AKA-T pinout, MAX9032AKA-T application, or MAX9032AKA-T equivalent, key selection criteria include its dual-channel SOT23-8 package, guaranteed hysteresis, input common-mode range extending to VDD − 1.1V, and absence of phase reversal under overdrive - all validated for industrial and automotive temperature ranges.
Technical Context
The MAX9032AKA-T integrates two independent comparators sharing a common VDD and VSS, each with noninverting (INA+/INB+) and inverting (INA−/INB−) inputs and rail-to-rail CMOS outputs (OUTA/OUTB). Its internal 4mV hysteresis is fixed and unadjustable, eliminating external feedback components while ensuring stable switching against slow-moving or noisy signals.
Input stage design supports common-mode voltage from VSS to VDD − 1.1V, enabling direct interfacing with sensors and ADC references operating near supply rails. Output stage minimizes transient supply current during transitions, reducing power-supply glitches without requiring external decoupling beyond standard 0.1µF bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct use with Li-ion, 3.3V, and 5V logic rails without level shifting |
| Propagation Delay | 188ns at VOD = 100mV - supports reliable timing-critical detection up to ~1MHz signal edges |
| Supply Current per Comparator | 35μA typical - allows continuous operation in always-on sensor monitoring with <70μA total quiescent draw |
| Input Hysteresis | 4mV built-in - provides inherent noise immunity without external resistors or layout sensitivity |
| Input Common-Mode Range | VSS to VDD − 1.1V - accommodates ground-referenced sensors and mid-supply reference voltages |
| Output Type | Rail-to-rail CMOS - drives logic inputs directly and interfaces with 1.8V–5V digital systems without pull-ups |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX9032AKA-T is housed in an 8-pin SOT23 package (package code K8+5), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VSS | Negative supply rail - must be connected to system ground or negative bias; requires local 0.1µF ceramic bypass |
| 2 | OUTB | Comparator B output - CMOS rail-to-rail, capable of sourcing/sinking 4mA with <400mV drop at full load |
| 3 | INB− | Comparator B inverting input - high-impedance node (8nA max bias current); sensitive to PCB leakage and coupling |
| 4 | INB+ | Comparator B noninverting input - matched to INB− for offset cancellation; differential input voltage limited to ±6.6V |
| 5 | VDD | Positive supply rail - accepts +2.5V to +5.5V; must be bypassed locally to minimize PSRR degradation |
| 6 | INA+ | Comparator A noninverting input - electrically identical to INB+; supports common-mode up to VDD − 1.1V |
| 7 | INA− | Comparator A inverting input - paired with INA+; input offset voltage ±1mV typical ensures precise threshold alignment |
| 8 | OUTA | Comparator A output - independently driven, no internal connection to OUTB; compatible with capacitive loads ≤150pF |
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 |
| 188ns propagation delay with 100mV overdrive | Enables accurate edge timing in data recovery and pulse-width discrimination applications up to 1MHz |
| 35μA per comparator supply current | Supports multi-year battery life in coin-cell–powered IoT sensors with dual-threshold wake-up logic |
| 4mV internal hysteresis | Eliminates need for external positive feedback network - reduces BOM count and layout sensitivity to parasitic capacitance |
| Rail-to-rail CMOS output stage | Drives 10kΩ loads to within 2mV of VDD/VSS at 10µA - simplifies interface to microcontroller GPIO or logic gates |
Applications
| Battery-Powered Threshold Detection | Photodiode Signal Discrimination |
|---|---|
Use Scenario: Monitoring lithium battery voltage to trigger low-battery warning and graceful shutdown before cutoff. IC Role / Device Role / Timing Role: Dual comparator configures one channel as undervoltage lockout (UVLO) and the other as overvoltage protection (OVP), both referenced to precision divider networks. Use Value: 4mV hysteresis prevents chatter near trip points; 35μA quiescent current extends standby time without compromising response speed. |
Use Scenario: Converting weak, noisy photodiode current into clean digital pulses for optical encoder or proximity sensing. IC Role / Device Role / Timing Role: Comparator A compares transimpedance-amplified photodiode output against adjustable threshold; Comparator B provides hysteresis-stabilized zero-crossing detection. Use Value: Input common-mode range down to VSS allows direct AC-coupled photodiode interface; rail-to-rail output ensures TTL/CMOS compatibility. |
| Digital Line Receiver | Keyless Entry RF Signal Detection |
Use Scenario: Recovering NRZ data from attenuated, distorted RS-485 or CAN bus signals in noisy industrial environments. IC Role / Device Role / Timing Role: Dual comparator implements windowed receiver: one detects rising edge, the other falling edge, enabling robust clock/data recovery. Use Value: 188ns propagation delay matches standard UART baud rates up to 1Mbps; no phase reversal avoids false triggering on overshoot. |
Use Scenario: Detecting valid amplitude-modulated RF envelope from car key fob receiver front-end for secure access activation. IC Role / Device Role / Timing Role: One comparator monitors envelope peak against programmable threshold; second validates pulse width and repetition rate to reject interference. Use Value: −40°C to +125°C rating ensures reliability in vehicle cabin electronics; low supply current enables always-on listening mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Higher 100μA supply current per comparator; no built-in hysteresis; slower 1.3μs propagation delay; wider SO-8 package | Requires external hysteresis resistors; unsuitable for ultra-low-power or high-speed edge detection | Choose LM393DR only if cost is primary constraint and 35μA quiescent current or 188ns delay are not required. |
| TLV3702IDR | Lower 20μA supply current; rail-to-rail input; 1.5μs propagation delay; same SOT23-8 package but different pinout (VDD on pin 8) | Input rail-to-rail enables direct sensing of signals near VSS/VDD; slower response limits use in >500kHz applications | Choose TLV3702IDR when input common-mode range beyond VDD − 1.1V is needed, accepting trade-off in speed and pin compatibility. |
Compared with LM393DR and TLV3702IDR, MAX9032AKA-T uniquely balances ultra-low power (35μA), fast response (188ns), and integrated hysteresis in a compact SOT23-8 - making it optimal for space-constrained, battery-operated systems demanding deterministic switching without external components.
Availability
MAX9032AKA-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive body electronics, and industrial sensor interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9032AKA-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
Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for industrial, automotive, communications, and consumer applications - emphasizing performance, integration, and reliability.
The MAX903x family targets low-cost, space-constrained systems needing fast, low-power comparators with built-in noise immunity - specifically engineered for portable, sensor-based, and automotive subsystems operating from single supplies.
FAQ
What is the maximum capacitive load the MAX9032AKA-T output can drive without oscillation?
The MAX9032AKA-T output is stable with capacitive loads up to 150pF, as specified in the Electrical Characteristics table. Driving larger loads may cause sustained oscillations due to phase margin degradation. For loads exceeding 150pF, add a series resistor (typically 10–50Ω) close to the output pin to isolate the capacitance and preserve stability. This limitation applies to both OUTA and OUTB independently.
Does the MAX9032AKA-T have shutdown capability like the MAX9030?
No, the MAX9032AKA-T does not include a shutdown feature. Unlike the MAX9030, which has a dedicated SHDN pin, the MAX9032AKA-T is a dual comparator without power-control functionality. Its supply current remains at 35μA per channel across the full temperature range. If shutdown is required, consider using discrete enable circuitry or selecting the MAX9030 for single-channel applications.
Can the MAX9032AKA-T operate from dual supplies such as ±2.5V?
Yes, the MAX9032AKA-T supports dual-supply operation from ±1.25V to ±2.75V, as stated in the Detailed Description section. In dual-supply mode, VDD connects to +VS and VSS to −VS. The input common-mode range extends from −VS to (+VS − 1.1V), and output swings rail-to-rail between −VS and +VS. All specifications, including propagation delay and supply current, remain valid under dual-supply conditions.
What is the input offset voltage specification for the MAX9032AKA-T over temperature?
The MAX9032AKA-T has a guaranteed input offset voltage of ±5mV 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. This tight offset enables accurate threshold detection in precision sensor interfaces without calibration.
Is the MAX9032AKA-T pin-compatible with other dual comparators in SOT23-8 packages?
No, the MAX9032AKA-T uses a proprietary pinout distinct from industry-standard dual comparators like the LM393 or TLV3702. Specifically, VDD is on pin 5 and VSS on pin 1, whereas many alternatives place VDD on pin 8. Substituting without PCB revision will result in incorrect power connections and functional failure. Always verify pin mapping before replacement.
MAX9032AKA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-8
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 0.008µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 55µA
- Current - Quiescent (Max):
- 100dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 228ns
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-23-8
MAX9032AKA-T FAQ
1.How can I place an order for MAX9032AKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9032AKA-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 MAX9032AKA-T reliable?
The price and inventory of MAX9032AKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9032AKA-T is usually 5 days.
3.What payment methods are accepted for MAX9032AKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9032AKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9032AKA-T?
MAX9032AKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9032AKA-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 MAX9032AKA-T?
For technical support, including MAX9032AKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9032AKA-T requirements.
6.How does Aetrix verify that MAX9032AKA-T is sourced from the original manufacturer or authorized distributors?
All MAX9032AKA-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 MAX9032AKA-T meets industry standards.
7.What is the process for return or replacement of MAX9032AKA-T?
All MAX9032AKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9032AKA-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 MAX9032AKA-T part is unused and in its original packaging.
Return procedure for MAX9032AKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9032AKA-T Tags
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LM339DR
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LM393DT
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LM239DR
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LM2903P
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