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Analog Devices Inc./Maxim Integrated MAX9022AKA-T
- Part No.:
- MAX9022AKA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-8
- Datasheet:
-
MAX9022AKA-T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,401
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Product details
Overview
MAX9022AKA-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 8-pin SOT23 package.
For engineers reviewing the MAX9022AKA-T datasheet, MAX9022AKA-T pinout, MAX9022AKA-T application, or MAX9022AKA-T equivalent, key selection criteria include ultra-low quiescent current, guaranteed hysteresis for noise immunity, input common-mode range extending to VDD − 1.1V, and compatibility with space-constrained portable and automotive sensor interfaces.
Technical Context
The MAX9022AKA-T integrates two independent comparators sharing a common VDD and VSS, each with matched input offset voltage (±1mV typical) and ±2nA input offset current. Its internal hysteresis is fixed at 4mV and not externally adjustable, eliminating need for external feedback resistors in basic threshold detection.
Input stage design supports common-mode voltages from VSS to VDD − 1.1V, enabling direct interfacing with sensors operating near ground or rail. Output stage uses low-glitch switching architecture to minimize supply-current transients during transitions, critical for stable operation in mixed-signal PCB layouts.
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 reliable detection of >100kHz signal edges in digital line receivers |
| Hysteresis | 4mV fixed - prevents chatter on slow-moving inputs like thermistor or photodiode signals |
| Input Common-Mode Range | VSS to VDD − 1.1V - allows direct connection to 0–3.3V sensor outputs without level-shifting |
| Output Swing | Rail-to-rail - ensures full logic-level compatibility with 1.8V/3.3V/5V microcontrollers |
| Operating Voltage | 2.5V to 5.5V single supply - covers Li-ion, coin-cell, and USB-powered systems |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
MAX9022AKA-T is housed in an 8-pin SOT23 package (JEDEC MO-178AA), footprint-compatible with industry-standard dual-comparator layouts and suitable for automated placement on high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output - drives logic inputs or MOSFET gates directly; rail-to-rail swing |
| 2 | INA− | Comparator A inverting input - accepts reference or inverted sensor signal |
| 3 | INA+ | Comparator A noninverting input - primary sensing node for threshold comparison |
| 4 | VDD | Positive supply - requires 0.1μF ceramic bypass capacitor to VSS for stability |
| 5 | VSS | Negative supply (GND) - return path for all currents; must be low-impedance |
| 6 | INB+ | Comparator B noninverting input - independent channel for second sensor or redundant monitoring |
| 7 | INB− | Comparator B inverting input - configurable as reference or differential input |
| 8 | OUTB | Comparator B output - electrically isolated from OUTA; supports dual-threshold logic |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Inputs can exceed VDD or go below VSS by 0.3V without output inversion - simplifies overvoltage-tolerant front-end design |
| Low supply current | 2.8μA per comparator at 25°C - reduces self-heating and extends battery runtime in IoT endpoints |
| Rail-to-rail output | Drives loads from VSS to VDD with <400mV drop at 4mA sink/source - eliminates need for pull-up resistors |
| Internal hysteresis | 4mV built-in - removes external resistor network for basic noise immunity in threshold detectors |
| High PSRR | 60dB minimum from 2.5V to 5.5V - maintains trip-point accuracy despite supply ripple in shared-rail systems |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
Use Scenario: Monitoring lithium coin-cell voltage in wearable health monitors to trigger low-battery alerts before shutdown. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel for upper threshold (3.0V), one for lower (2.5V). Use Value: 2.8μA total quiescent current enables >5-year battery life; 4mV hysteresis prevents false triggers from supply noise. | Use Scenario: Converting analog output from MEMS accelerometer into digital motion-triggered interrupt for wake-on-motion. IC Role / Device Role / Timing Role: Comparator A compares X-axis signal against programmable reference; Comparator B validates Y-axis activity simultaneously. Use Value: Input common-mode range down to VSS allows direct connection to ratiometric sensors; rail-to-rail output interfaces directly with MCU GPIO. |
| Photodiode Preamps | Keyless Entry Systems |
Use Scenario: Detecting weak optical pulses from IR remote receivers in smart home hubs, where ambient light causes baseline drift. IC Role / Device Role / Timing Role: Comparator B used with transimpedance amplifier output to convert photocurrent into clean digital pulses. Use Value: 3μs propagation delay preserves pulse fidelity up to 100kHz; 4mV hysteresis rejects 50/60Hz lighting interference. | Use Scenario: Validating RF receiver output amplitude in automotive key fob receivers to distinguish valid commands from noise bursts. IC Role / Device Role / Timing Role: Dual comparator implements envelope detection - one channel for signal presence, one for amplitude thresholding. Use Value: -40°C to +125°C rating ensures operation in parked vehicle extremes; low supply current minimizes standby drain on car battery. |
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 | Higher supply current (350nA typ), no internal hysteresis, 1.8V min supply | Requires external hysteresis resistors; better for ultra-low-voltage (1.8V) systems | Select when operating below 2.5V or needing sub-1μA current at elevated temperatures |
| LMV393QDRQ1 | Higher supply current (20μA), no hysteresis, automotive-grade (-40°C to +125°C) | Lacks built-in hysteresis; requires external components for noise immunity | Select when higher speed (300ns delay) and AEC-Q100 qualification are mandatory over micropower priority |
Compared with TLV3692IDR and LMV393QDRQ1, the MAX9022AKA-T uniquely combines factory-trimmed 4mV hysteresis, 2.8μA supply current, and rail-to-rail output in a single 8-pin SOT23 package - making it optimal for cost-sensitive, space-constrained, battery-operated threshold detection where minimal external components are required.
Availability
MAX9022AKA-T is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection, and keyless entry systems requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX9022AKA-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 MAX9022AKA-T belongs to the MAX902x micropower comparator family, designed specifically for ultra-low-power threshold detection in portable and automotive sensor interfaces where long battery life and noise immunity are critical.
FAQ
What is the maximum capacitive load the MAX9022AKA-T output can drive without oscillation?
The MAX9022AKA-T is specified to drive up to 150pF without sustained oscillations, as confirmed in the Absolute Maximum Ratings table. This value is validated across the full -40°C to +125°C temperature range and supports direct connection to standard logic inputs and moderate-length PCB traces. For loads exceeding 150pF, external series resistance should be added to dampen ringing.
Does the MAX9022AKA-T require external hysteresis resistors for stable operation?
No, the MAX9022AKA-T includes 4mV of factory-trimmed internal hysteresis, which is sufficient to prevent oscillation with slow-moving input signals such as those from thermistors or photodiodes. External hysteresis is only needed if a wider hysteresis band (>4mV) is required for specific noise environments.
Can the MAX9022AKA-T operate with a 1.8V supply?
No, the MAX9022AKA-T has a minimum single-supply voltage of 2.5V, as specified in the Electrical Characteristics table under Operating Voltage Range. Attempting operation below 2.5V may result in undefined behavior, increased propagation delay, or failure to switch reliably. For 1.8V systems, consider alternatives like the TLV3692IDR.
What is the input offset voltage specification for the MAX9022AKA-T over temperature?
The MAX9022AKA-T has a guaranteed input offset voltage of ±8mV over the full -40°C to +125°C range, with ±1mV typical at +25°C. Its input offset voltage temperature coefficient is ±1µV/°C, meaning drift remains tightly bounded - critical for precision threshold applications in automotive or industrial environments.
Is the MAX9022AKA-T pin-compatible with other dual comparators in SOT23-8 packages?
No, the MAX9022AKA-T uses a proprietary pinout: pins 1/8 are outputs, pins 2/3/6/7 are inputs, and pins 4/5 are VDD/VSS. It is not pin-compatible with industry-standard dual comparators like LM393 or TLV393, which place VDD on pin 8 and outputs on pins 1/7. PCB layout must follow the MAX9022AKA-T-specific pin mapping shown in the datasheet.
MAX9022AKA-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:
- 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
- :
- SOT-23-8
MAX9022AKA-T FAQ
1.How can I place an order for MAX9022AKA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9022AKA-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 MAX9022AKA-T reliable?
The price and inventory of MAX9022AKA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9022AKA-T is usually 5 days.
3.What payment methods are accepted for MAX9022AKA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9022AKA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9022AKA-T?
MAX9022AKA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9022AKA-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 MAX9022AKA-T?
For technical support, including MAX9022AKA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9022AKA-T requirements.
6.How does Aetrix verify that MAX9022AKA-T is sourced from the original manufacturer or authorized distributors?
All MAX9022AKA-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 MAX9022AKA-T meets industry standards.
7.What is the process for return or replacement of MAX9022AKA-T?
All MAX9022AKA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9022AKA-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 MAX9022AKA-T part is unused and in its original packaging.
Return procedure for MAX9022AKA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9022AKA-T Tags
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