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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:7,375
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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 automotive-grade temperature support.
Technical Context
The MAX9022AKA+T integrates two independent comparators with matched input offset voltage (±1mV typical) and ±1µV/°C drift, enabling stable threshold detection in varying thermal environments. Its input stage supports common-mode voltages from VSS to VDD − 1.1V and exhibits 70dB CMRR and 60dB PSRR over full supply range.
Output switching is optimized to minimize supply glitches via reduced dynamic current draw during transitions. The device avoids phase reversal when inputs are overdriven beyond rails, and supports up to 150pF capacitive load without oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 2.8μA per comparator - enables multi-year operation on coin-cell batteries |
| Propagation Delay | 3μs at VOD = 100mV - supports fast edge detection in sensor interfaces |
| Hysteresis | 4mV built-in - eliminates chatter on slow-moving or noisy inputs without external components |
| Input Offset Voltage | ±1mV typical - ensures accurate threshold setting in precision discriminators |
| Common-Mode Range | VSS to VDD − 1.1V - allows direct interfacing with sensors operating near supply rails |
| Output Swing | Rail-to-rail - maximizes dynamic range for downstream logic or ADC reference levels |
| Operating Temp | -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), with 0.65mm pitch, 2.9mm × 1.6mm footprint, and exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain or push-pull output (rail-to-rail capable) |
| 2 | INA− | Inverting input for Comparator A - accepts signals down to VSS |
| 3 | INA+ | Noninverting input for Comparator A - supports common-mode up to VDD − 1.1V |
| 4 | VDD | Positive supply pin - requires 0.1µF bypass capacitor to VSS for stability |
| 5 | VSS | Negative supply / ground reference - shared return path for both comparators |
| 6 | INB+ | Noninverting input for Comparator B - electrically isolated from INA+ path |
| 7 | INB− | Inverting input for Comparator B - matched offset and bias current to INA± |
| 8 | OUTB | Comparator B output - independently controllable and loadable |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdrive | Prevents false triggering when inputs exceed supply rails - critical for unconditioned sensor inputs |
| Ultra-low 2.8μA supply current | Reduces average system power by >90% vs. standard comparators - extends battery life in wearables |
| Internal 4mV hysteresis | Eliminates need for external feedback resistors in threshold-detection applications |
| Rail-to-rail output swing | Drives 1.8V, 3.3V, and 5V logic families directly without level-shifting circuitry |
| Single-supply 2.5V–5.5V operation | Supports Li-ion, Li-Po, and dual-AA battery configurations without regulation overhead |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
Use Scenario: Monitoring battery voltage and system wake-up thresholds in handheld medical devices. IC Role / Device Role / Timing Role: Dual comparator provides independent low-battery alert and charge-complete detection. Use Value: 2.8μA total quiescent current preserves standby time; 4mV hysteresis prevents false alarms during transient load drops. | Use Scenario: Converting analog outputs from temperature or pressure sensors into digital logic levels. IC Role / Device Role / Timing Role: Threshold discriminator comparing sensor output against reference voltage. Use Value: Input common-mode range to VDD − 1.1V allows direct interface with ratiometric sensors powered from same VDD. |
| Digital Line Receivers | Threshold Detectors / Discriminators |
Use Scenario: Recovering digital data from attenuated or distorted baseband signals in IoT node receivers. IC Role / Device Role / Timing Role: High-noise-margin line receiver using internal hysteresis to reject EMI-induced jitter. Use Value: 3μs propagation delay supports >100kHz data rates; rail-to-rail output drives MCU GPIOs directly. | Use Scenario: Detecting door-open, tamper, or motion events in automotive keyless entry modules. IC Role / Device Role / Timing Role: Dual-channel window comparator monitoring two independent analog security sensor inputs. Use Value: -40°C to +125°C rating ensures reliable operation in vehicle cabin environments; matched offsets enable tight window tolerances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3602DR | Higher 10μA supply current; 120ns propagation delay; no built-in hysteresis | Requires external hysteresis resistors; better suited for high-speed, non-battery-critical designs | Select TLV3602DR only if speed >1MHz is required and board space allows hysteresis components |
| LMV393IDR | 38μA supply current; 300ns delay; rail-to-rail input but not output; no hysteresis | Not suitable for ultra-low-power or noise-prone environments without added circuitry | Choose LMV393IDR only for cost-sensitive, non-automotive applications where power budget exceeds 10μA |
Compared with TLV3602DR and LMV393IDR, the MAX9022AKA+T uniquely combines sub-3μA quiescent current, factory-trimmed 4mV hysteresis, and automotive temperature range - making it the only option for long-life, noise-immune, drop-in dual-comparator replacement in space-constrained portable systems.
Availability
MAX9022AKA+T is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection circuits, and automotive threshold detectors requiring stable component supply across extended temperature ranges and long production lifecycles.
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, single-supply threshold detection in portable and automotive electronics where battery life and noise immunity are critical.
FAQ
What is the maximum capacitive load the MAX9022AKA+T can drive without oscillation?
The MAX9022AKA+T is specified to drive up to 150pF capacitive load without sustained oscillations, as verified in the Absolute Maximum Ratings and Typical Operating Characteristics sections of the datasheet. This value applies across the full -40°C to +125°C temperature range and 2.5V–5.5V supply range. Exceeding 150pF may require external buffering or series resistance to maintain stability in the MAX9022AKA+T output stage.
Does the MAX9022AKA+T support dual-supply operation?
Yes, the MAX9022AKA+T supports dual-supply operation from ±1.25V to ±2.75V, in addition to its primary single-supply mode (2.5V–5.5V). The input common-mode range remains VSS to VDD − 1.1V regardless of supply configuration, and all electrical specifications including 2.8μA supply current and 3μs propagation delay are guaranteed across both modes. This flexibility allows the MAX9022AKA+T to interface with bipolar sensor outputs or legacy dual-rail systems.
Is the 4mV hysteresis in the MAX9022AKA+T adjustable or fixed?
The 4mV hysteresis in the MAX9022AKA+T is fixed and internally trimmed - it cannot be adjusted or disabled. This factory-set hysteresis provides consistent noise immunity across temperature and process variation without requiring external components. If additional hysteresis is needed, external positive-feedback resistors can be added to each comparator's output and input pins, as detailed in the Applications Information section of the MAX9022AKA+T datasheet.
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 operating range, with ±1mV typical at +25°C. Its offset voltage temperature coefficient is ±1µV/°C, meaning drift contributes less than ±0.15mV over a 150°C span. This low drift ensures stable trip-point accuracy in automotive and industrial environments where ambient temperature varies widely - a key design advantage of the MAX9022AKA+T.
Can the MAX9022AKA+T outputs drive standard CMOS logic inputs directly?
Yes, the MAX9022AKA+T outputs swing rail-to-rail and are fully compatible with 1.8V, 3.3V, and 5V CMOS logic families. At 4mA sink/source, the output voltage deviation is ≤400mV from the rail, ensuring solid HIGH/LOW recognition across voltage domains. No level-shifting circuitry is required when interfacing the MAX9022AKA+T with microcontrollers, FPGAs, or digital ASICs - simplifying PCB layout and reducing BOM count.
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:
- Active
- 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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