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Analog Devices Inc./Maxim Integrated MAX9032AUA+
- Part No.:
- MAX9032AUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX9032AUA+.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:272
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Product details
Overview
The MAX9032AUA+ from Maxim Integrated is a dual, rail-to-rail output comparator optimized for single-supply operation from +2.5V to +5.5V, featuring 188ns propagation delay, 35μA per comparator supply current, 4mV internal hysteresis, and operation across -40°C to +125°C - deployed in battery-powered portable systems and sensor signal detection circuits.
For engineers reviewing the MAX9032AUA+ datasheet, MAX9032AUA+ pinout, MAX9032AUA+ application, or MAX9032AUA+ equivalent, this page delivers verified package mapping (8-pin μMAX), confirmed dual-comparator functionality, real-world timing performance, input common-mode range (VSS to VDD – 1.1V), and design-critical output behavior under capacitive load and overdrive conditions.
Technical Context
This dual comparator integrates two independent high-speed comparators sharing a common VDD and VSS, each with noninverting (INA+/INB+) and inverting (INA−/INB−) inputs, rail-to-rail outputs (OUTA/OUTB), and no phase reversal on overdriven inputs. Its internal 4mV hysteresis eliminates oscillation with slow-moving signals without external components.
The device uses a low-power CMOS input stage with 8nA typical input bias current and achieves stable switching by minimizing supply-current transients during output transitions - critical for noise-sensitive analog front-ends in photodiode preamps and digital line receivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct interface with Li-ion battery (3.0–4.2V) and 3.3V logic without level shifting. |
| Propagation Delay | 188ns at VOD = 100mV - supports reliable edge detection in 5MHz digital line receiver applications. |
| Supply Current per Comparator | 35μA typical - allows dual-channel sensing in ultra-low-power portable systems with multi-year battery life. |
| Input Common-Mode Range | VSS to VDD – 1.1V - accepts ground-referenced sensor signals (e.g., thermistor dividers) while powered from 2.5V. |
| Hysteresis | 4mV built-in - provides noise immunity against ≤10mV peak-to-peak interference without external feedback resistors. |
| Output Voltage Swing | Rail-to-rail (VOL < 2mV at 10µA sink/source) - ensures full logic-level compatibility with 1.8V/3.3V microcontrollers. |
| Input Offset Voltage | ±1mV typical - enables accurate threshold detection in precision photodiode preamp circuits with sub-mV resolution. |
Pinout & Package
Package: 8-pin μMAX (U8+1), 3.0mm × 3.0mm body, 0.65mm pitch, exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Dual comparator Channel A output - drives logic inputs or MOSFET gates directly; rail-to-rail swing minimizes level-shifter need. |
| 2 | INA− | Channel A inverting input - accepts reference voltage or inverted sensor signal; high impedance (8nA bias) avoids loading source. |
| 3 | INA+ | Channel A noninverting input - connects to sensor output or threshold divider; common-mode range extends to VDD – 1.1V. |
| 4 | VSS | Negative supply terminal - must be bypassed with 0.1µF capacitor near pin to suppress switching noise coupling into inputs. |
| 5 | VDD | Positive supply terminal - powers both comparators; PSRR ≥72dB ensures immunity to supply ripple up to 5.5V. |
| 6 | INB+ | Channel B noninverting input - independent of Channel A; enables dual-threshold detection (e.g., window comparator with external resistors). |
| 7 | INB− | Channel B inverting input - matches INA− electrical specs; supports differential sensing when paired with INB+. |
| 8 | OUTB | Channel B output - electrically isolated from OUTA; allows concurrent monitoring of two independent signals (e.g., battery voltage and temperature). |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents false triggering when input exceeds common-mode range - essential for robust keyless entry system sensors. |
| Ultra-low 35μA supply current per comparator | Enables always-on dual-channel wake-up detection in wearable health monitors without compromising battery runtime. |
| 188ns propagation delay with 15pF load | Meets timing budget for 5Mbps digital line receiver designs using NRZ-encoded signals. |
| Rail-to-rail output swing (≤2mV from rails) | Eliminates need for external pull-ups in 3.3V I²C-compatible threshold detection circuits. |
| Internal 4mV hysteresis | Removes requirement for external positive-feedback resistors in photodiode preamp discriminators - reduces BOM count and layout area. |
Applications
| Battery Voltage Monitor | Photodiode Signal Discriminator |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during charging/discharging to trigger low-voltage cutoff and overvoltage protection. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - OUTA flags undervoltage (INA+ < 3.0V), OUTB flags overvoltage (INB+ > 4.25V). Use Value: 4mV hysteresis prevents chatter near thresholds; 35μA quiescent current extends battery life in maintenance-free IoT nodes. |
Use Scenario: Converting weak, noisy photocurrent from ambient light sensor into clean digital pulses for microcontroller interrupt handling. IC Role / Device Role / Timing Role: Single comparator channel (INA+/INA−) with reference set by resistor divider; OUTA drives GPIO with rail-to-rail logic levels. Use Value: Input common-mode range down to VSS accepts grounded photodiode cathode; 188ns delay enables response to 5MHz modulated IR signals. |
| Digital Line Receiver | Threshold Detector for Keyless Entry |
|
Use Scenario: Recovering digital data from attenuated, capacitively coupled RS-485 or CAN bus stubs in industrial gateways. IC Role / Device Role / Timing Role: Dual comparator used for differential input slicing - INA+/INA− and INB+/INB− process complementary signal pairs. Use Value: No phase reversal ensures correct polarity even during bus fault overdrive; 150pF max capacitive load tolerance accommodates long PCB traces. |
Use Scenario: Detecting RF envelope amplitude from car key fob receiver to validate presence within 3m range before unlocking doors. IC Role / Device Role / Timing Role: One comparator channel compares rectified RF envelope to adjustable threshold; OUTB triggers MCU wake-up on valid pulse burst. Use Value: -40°C to +125°C rating ensures operation in parked vehicle extremes; 4mV hysteresis rejects EMI from ignition systems. |
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, 300ns propagation delay, no built-in hysteresis, wider SO-8 footprint (4.9mm × 6.0mm vs. μMAX 3.0mm × 3.0mm). | Not suitable for space-constrained portable devices; requires external hysteresis resistors for noise immunity. | Select LM393DR only if cost is primary constraint and board area/layout flexibility permits larger SO-8 package and added passive components. |
| TLV3702IDR | Lower 17μA supply current, 1.5μs propagation delay, rail-to-rail input, 6.5mV hysteresis, available in same 8-pin SO but not μMAX. | Better power efficiency but slower response - unsuitable for >500kHz signal detection; input rail-to-rail enables true ground-sensing. | Choose TLV3702IDR when ultra-low power dominates timing requirements, and SO-8 packaging is acceptable for the target PCB stackup. |
Compared with LM393DR and TLV3702IDR, the MAX9032AUA+ uniquely balances ultra-small μMAX footprint, 188ns speed, 4mV integrated hysteresis, and 35μA supply current - making it optimal for compact, battery-powered dual-threshold detection where layout area and transient response are co-critical.
Availability
The MAX9032AUA+ is available at Aetrix Electronics and suitable for battery-powered portable systems, photodiode signal discriminators, digital line receivers, and keyless entry systems requiring stable component supply across automotive (-40°C to +125°C) and industrial temperature ranges.
Supply support for MAX9032AUA+ 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 power, sensing, and interface applications in industrial, automotive, and consumer markets.
The MAX9032AUA+ belongs to the MAX903x family of ultra-low-power, single-supply comparators engineered specifically for space- and energy-constrained portable electronics requiring fast, noise-immune threshold detection.
FAQ
What is the operating temperature range of the MAX9032AUA+?
The MAX9032AUA+ is specified for continuous operation from -40°C to +125°C, validated across this full range for parameters including propagation delay, supply current, and input offset voltage. This makes the MAX9032AUA+ suitable for under-hood automotive modules and outdoor industrial sensors where ambient extremes are expected.
Does the MAX9032AUA+ include internal hysteresis, and how does it affect circuit design?
Yes, the MAX9032AUA+ integrates 4mV of internal hysteresis, defined as the difference between its rising and falling input trip points. This eliminates the need for external positive-feedback resistors in most noise-prone applications - simplifying layout and reducing BOM count. The MAX9032AUA+'s hysteresis is fixed and cannot be disabled or adjusted.
Can the MAX9032AUA+ operate from a 2.5V single supply, and what is its output behavior at that voltage?
Yes, the MAX9032AUA+ operates down to +2.5V single supply with guaranteed rail-to-rail output swing: VOL < 2mV and VOH > VDD – 2mV at 10µA load. At 2.5V, this delivers clean 0–2.5V logic-compatible outputs, enabling direct interfacing with 2.5V microcontrollers and ADC reference circuits without level translation.
What is the maximum capacitive load the MAX9032AUA+ can drive without oscillation?
The MAX9032AUA+ is characterized to drive up to 150pF without sustained oscillations, as confirmed in the Electrical Characteristics table. Driving loads beyond 150pF may increase propagation delay and risk instability - for heavier loads, add a series resistor (e.g., 10–50Ω) close to the output pin to isolate capacitance.
How does the input common-mode voltage range of the MAX9032AUA+ compare to standard comparators?
The MAX9032AUA+ supports an input common-mode range from VSS to VDD – 1.1V, meaning it accepts signals as low as ground and as high as 1.1V below the positive rail. This exceeds the capability of many legacy comparators (e.g., LM393 limited to VSS + 1.5V to VDD – 1.5V), enabling direct connection of ground-referenced sensors like thermistors or photodiodes without level-shifting circuitry.
MAX9032AUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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
- :
- 8-uMAX/uSOP
MAX9032AUA+ FAQ
1.How can I place an order for MAX9032AUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9032AUA+ 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 MAX9032AUA+ reliable?
The price and inventory of MAX9032AUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9032AUA+ is usually 5 days.
3.What payment methods are accepted for MAX9032AUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9032AUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9032AUA+?
MAX9032AUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9032AUA+ 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 MAX9032AUA+?
For technical support, including MAX9032AUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9032AUA+ requirements.
6.How does Aetrix verify that MAX9032AUA+ is sourced from the original manufacturer or authorized distributors?
All MAX9032AUA+ 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 MAX9032AUA+ meets industry standards.
7.What is the process for return or replacement of MAX9032AUA+?
All MAX9032AUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9032AUA+, 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 MAX9032AUA+ part is unused and in its original packaging.
Return procedure for MAX9032AUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9032AUA+ Tags
-
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
STMicroelectronics
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LM393DR
Texas Instruments
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LM239DR
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LM339APWR
Texas Instruments
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LM2903P
Texas Instruments
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LM393ADR
Texas Instruments
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NCX2200GMAZ
NXP USA Inc.
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