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Analog Devices Inc./Maxim Integrated MAX9022AUA-T
- Part No.:
- MAX9022AUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX9022AUA-T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,889
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Product details
Overview
MAX9022AUA-T from Analog Devices is a dual micropower comparator optimized for battery-powered portable systems, featuring 2.8μA supply current per comparator, 3μs propagation delay, and 4mV internal hysteresis across -40°C to +125°C. It operates from 2.5V to 5.5V single supply and delivers rail-to-rail output swing in an ultra-small 8-pin μMAX package.
For engineers reviewing the MAX9022AUA-T datasheet, MAX9022AUA-T pinout, MAX9022AUA-T application, or MAX9022AUA-T equivalent, key selection criteria include low quiescent current, guaranteed hysteresis for noise immunity, input common-mode range extending to VDD − 1.1V, and compatibility with space-constrained sensor-signal detection and photodiode preamp designs.
Technical Context
The MAX9022AUA-T integrates two independent comparators sharing a common VDD and VSS, each with matched input offset voltage (±1mV typical) and ±1µV/°C temperature coefficient. Its input stage supports common-mode voltages from VSS to VDD − 1.1V, enabling direct interfacing with sensors operating near ground or rail.
Output stages are designed for rail-to-rail swing with 2mV low-level output voltage at 10µA sink/source, while internal 4mV hysteresis eliminates oscillation on slow-moving inputs without external components - a critical feature for threshold detection in mobile communications and keyless entry systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply - enables direct use with Li-ion, Li-poly, or 3.3V/5V system rails |
| Supply Current per Comparator | 2.8μA typical - extends battery life in always-on sensor monitoring applications |
| Propagation Delay | 3μs at VOD = 100mV - supports reliable signal edge detection up to ~100kHz input transition rates |
| Hysteresis | 4mV built-in - provides inherent noise immunity without external feedback resistors |
| Input Offset Voltage | ±1mV typical - ensures accurate threshold discrimination in precision analog sensing |
| Common-Mode Input Range | VSS to VDD − 1.1V - allows direct connection to ground-referenced photodiodes or resistive sensors |
| Output Swing | Rail-to-rail - simplifies interface with CMOS logic and ADC reference thresholds |
Pinout & Package
The MAX9022AUA-T is housed in an 8-pin μMAX package (3mm × 3mm, 0.8mm height), RoHS-compliant and tape-and-reel packaged (T suffix). This thermally enhanced, ultra-compact package supports high-density PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output - rail-to-rail CMOS-compatible signal driving logic or ADC trigger |
| 2 | INA− | Comparator A inverting input - accepts reference or inverted sensor signal |
| 3 | INA+ | Comparator A noninverting input - connects to sensor output or threshold source |
| 4 | VDD | Positive supply - requires local 0.1µF bypass capacitor to minimize supply noise coupling |
| 5 | VSS | Negative supply (ground) - shared return path for both comparators and bypass cap |
| 6 | INB+ | Comparator B noninverting input - independent channel for dual-threshold or differential sensing |
| 7 | INB− | Comparator B inverting input - supports complementary signal routing or reference biasing |
| 8 | OUTB | Comparator B output - fully independent output enabling parallel decision logic |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents erroneous output states when input exceeds common-mode range - critical for robust sensor fault detection |
| Low 2.8μA supply current per comparator | Enables multi-year operation from coin-cell batteries in wireless sensor nodes and wearables |
| Internal 4mV hysteresis | Eliminates need for external positive feedback network - reduces BOM count and layout area |
| Rail-to-rail output swing | Ensures full logic-level compatibility with 1.8V–5V digital interfaces without level-shifting circuitry |
| Single-supply operation down to 2.5V | Supports direct integration with low-voltage microcontrollers and energy-harvesting power sources |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
Use Scenario: Power management in handheld medical devices monitoring battery voltage and sensor alerts. IC Role / Device Role / Timing Role: Dual comparator performing low-battery warning and sensor fault flagging simultaneously. Use Value: 2.8μA total quiescent current (5.6μA for both channels) preserves battery capacity during standby. | Use Scenario: Threshold detection of analog outputs from MEMS accelerometers or environmental sensors. IC Role / Device Role / Timing Role: Precision window comparator detecting out-of-range motion or gas concentration levels. Use Value: 4mV internal hysteresis rejects EMI-induced noise without degrading response time. |
| Photodiode Preamps | Keyless Entry Systems |
Use Scenario: Converting weak photocurrent signals into clean digital pulses for optical encoders or pulse oximeters. IC Role / Device Role / Timing Role: High-impedance comparator amplifying photodiode output with minimal loading. Use Value: Input bias current ≤80nA prevents signal degradation in high-gain transimpedance stages. | Use Scenario: RF receiver signal strength validation and wake-up trigger in automotive remote key fobs. IC Role / Device Role / Timing Role: Dual-channel comparator detecting valid carrier envelope and data preamble. Use Value: 3μs propagation delay ensures sub-millisecond response to incoming RF bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3692IDR | Lower supply current (350nA), but slower propagation delay (12μs); no built-in hysteresis | Better for ultra-low-power wake-up circuits where speed is secondary to current draw | Select TLV3692IDR only if <1μA per channel is mandatory and 4mV hysteresis can be added externally |
| LMV7215MMX/NOPB | Higher supply current (32μA), faster propagation (120ns), includes open-drain output option | Suitable for higher-speed digital line receivers requiring fast edge detection | Choose LMV7215MMX/NOPB when >1MHz signal transitions require sub-200ns response |
Compared with TLV3692IDR and LMV7215MMX/NOPB, the MAX9022AUA-T uniquely balances ultra-low 2.8μA current, 3μs speed, and integrated 4mV hysteresis - making it optimal for compact, battery-critical systems where noise immunity and minimal external components are design priorities.
Availability
MAX9022AUA-T is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection, and photodiode preamp applications requiring stable component supply across automotive (-40°C to +125°C) and industrial temperature ranges.
Supply support for MAX9022AUA-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 MAX9022AUA-T belongs to the MAX902x micropower comparator family, engineered specifically for space-constrained, battery-operated systems demanding low quiescent current, rail-to-rail output, and built-in hysteresis without external components.
FAQ
What is the operating temperature range for the MAX9022AUA-T?
The MAX9022AUA-T is specified for continuous operation from -40°C to +125°C, meeting automotive-grade reliability requirements. This range is validated across all electrical parameters including supply current, propagation delay, and input offset voltage, ensuring consistent performance in under-hood or outdoor portable environments where the MAX9022AUA-T is deployed.
Does the MAX9022AUA-T require external hysteresis components?
No, the MAX9022AUA-T includes 4mV of internal hysteresis, eliminating the need for external positive-feedback resistors in most noise-prone applications. This feature is factory-trimmed and remains stable across temperature and supply voltage variations, directly supporting robust threshold detection in the MAX9022AUA-T without additional BOM cost or layout area.
What package type is used for the MAX9022AUA-T?
The MAX9022AUA-T uses the 8-pin μMAX package (3mm × 3mm, 0.8mm height), a proprietary Analog Devices surface-mount outline that offers superior thermal performance and board-area efficiency compared to standard SOT23-8. The "U" in "AUA" explicitly denotes this μMAX footprint, confirmed in the official ordering information table for the MAX9022AUA-T.
Can the MAX9022AUA-T operate from a 2.5V supply?
Yes, the MAX9022AUA-T is fully specified to operate from 2.5V to 5.5V single supply, with all key parameters - including 2.8μA supply current, 3μs propagation delay, and rail-to-rail output swing - guaranteed across this entire voltage range. This makes the MAX9022AUA-T compatible with single-cell Li-ion, LiFePO₄, or regulated 2.5V system rails without performance compromise.
Is the MAX9022AUA-T pin-compatible with other MAX9022 variants?
No - the MAX9022AUA-T (μMAX) is not pin-compatible with the MAX9022AKA+T (SOT23-8) or MAX9022ASA+T (SO-8), despite identical functionality. Pin numbering differs between packages: μMAX uses a 1–8 linear sequence, while SOT23-8 follows a different pad layout. Layout redesign is required when substituting the MAX9022AUA-T for other MAX9022 package variants.
MAX9022AUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- 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
- :
- 8-uMAX/uSOP
MAX9022AUA-T FAQ
1.How can I place an order for MAX9022AUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9022AUA-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 MAX9022AUA-T reliable?
The price and inventory of MAX9022AUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9022AUA-T is usually 5 days.
3.What payment methods are accepted for MAX9022AUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9022AUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9022AUA-T?
MAX9022AUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9022AUA-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 MAX9022AUA-T?
For technical support, including MAX9022AUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9022AUA-T requirements.
6.How does Aetrix verify that MAX9022AUA-T is sourced from the original manufacturer or authorized distributors?
All MAX9022AUA-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 MAX9022AUA-T meets industry standards.
7.What is the process for return or replacement of MAX9022AUA-T?
All MAX9022AUA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9022AUA-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 MAX9022AUA-T part is unused and in its original packaging.
Return procedure for MAX9022AUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9022AUA-T Tags
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