My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX9022ASA-T
- Part No.:
- MAX9022ASA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9022ASA-T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,928
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX9022ASA-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 SO package.
For engineers reviewing the MAX9022ASA-T datasheet, MAX9022ASA-T pinout, MAX9022ASA-T application, or MAX9022ASA-T equivalent, this device is selected for ultra-low-power threshold detection where supply headroom is constrained, input common-mode range extends to VDD − 1.1V, and noise immunity is required without external hysteresis components.
Technical Context
The MAX9022ASA-T integrates two independent comparators sharing a common VDD and VSS, each with matched input offset voltage (±1mV typical) and temperature coefficient (±1µV/°C). Its input stage supports common-mode voltages from VSS to VDD − 1.1V, enabling direct interfacing with sensors operating near ground or rail.
The output stage provides rail-to-rail swing with 2mV low-level output voltage at 10µA sink and 160–400mV at 4mA sink, while suppressing supply glitches via reduced switching current during transitions - critical for mixed-signal systems sharing noisy power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply - enables operation directly from Li-ion or 3.3V logic rails without regulation. |
| Supply Current per Comparator | 2.8μA typical - allows years of operation on coin-cell batteries in always-on sensor monitoring. |
| Propagation Delay | 3μs at 100mV overdrive - supports fast edge detection in digital line receivers and photodiode preamp outputs. |
| Hysteresis | 4mV built-in - eliminates oscillation on slow-moving inputs (e.g., thermistor or potentiometer signals) without external feedback. |
| Input Common-Mode Range | VSS to VDD − 1.1V - accommodates ground-referenced analog sensors without level-shifting circuitry. |
| Output Swing | Rail-to-rail - ensures full logic-level compatibility with 1.8V, 3.3V, and 5V microcontrollers. |
| Input Offset Voltage | ±1mV typical - enables accurate threshold discrimination in precision battery-voltage monitors. |
Pinout & Package
MAX9022ASA-T is housed in an 8-pin SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012AC compliant, RoHS-compliant, and rated for automotive temperature range (-40°C to +125°C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A output - drives logic inputs or LED indicators with rail-to-rail swing and 4mA sink capability. |
| 2 | INA− | Comparator A inverting input - accepts reference or feedback signal; supports common-mode down to VSS. |
| 3 | INA+ | Comparator A noninverting input - connects to sensor or signal source; matched offset improves differential accuracy. |
| 4 | VSS | Negative supply - must be connected to system ground; serves as return path for both comparators. |
| 5 | VDD | Positive supply - bypass with 0.1µF capacitor to VSS to suppress supply transients affecting propagation delay. |
| 6 | INB+ | Comparator B noninverting input - electrically isolated from INA+; enables dual independent thresholds. |
| 7 | INB− | Comparator B inverting input - supports separate reference or inverted signal path for window detection. |
| 8 | OUTB | Comparator B output - independently controllable; no phase reversal when inputs exceed common-mode limits. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Prevents false triggering when input signals exceed VDD or drop below VSS - essential for unconditioned sensor outputs. |
| Internal 4mV hysteresis | Eliminates need for external positive-feedback resistors in threshold detectors, reducing BOM count and PCB area. |
| 2.5V minimum supply voltage | Enables direct interface with low-voltage microcontrollers and energy-harvesting circuits without boost regulation. |
| Ultra-low 2.8μA quiescent current | Permits integration into always-on wake-up circuits with <1µA total system standby current. |
| Rail-to-rail output swing | Guarantees full logic-high and logic-low levels across all supply voltages, simplifying interface with diverse digital loads. |
Applications
| Battery-Voltage Monitor | Digital Line Receiver |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage to trigger low-battery warning or shutdown before deep discharge. IC Role / Device Role / Timing Role: Dual comparator configured as window detector - one channel for upper threshold (4.2V), one for lower (3.0V). Use Value: 2.8μA total quiescent current extends battery life by months in maintenance-free IoT nodes. |
Use Scenario: Recovering digital data from attenuated or distorted baseband signals in short-range wireless links. IC Role / Device Role / Timing Role: Threshold comparator with self-biased reference using time-averaged input - rejects amplitude noise while preserving timing integrity. Use Value: 3μs propagation delay and 4mV hysteresis enable reliable 100kbps data recovery without clock recovery circuitry. |
| Photodiode Preamp Comparator | Keyless Entry RF Signal Detector |
|
Use Scenario: Converting weak, low-frequency photocurrent pulses from ambient light or IR sensors into clean digital events. IC Role / Device Role / Timing Role: High-impedance input comparator with VSS-to-(VDD−1.1V) common-mode range - interfaces directly with transimpedance amplifier output. Use Value: Input bias current ≤80nA minimizes signal loss and offset error in high-gain front-ends. |
Use Scenario: Detecting valid RF envelope peaks in 315MHz/433MHz key fob receivers under varying antenna coupling conditions. IC Role / Device Role / Timing Role: Fast-response comparator with internal hysteresis - discriminates modulated carrier bursts from thermal noise and EMI spikes. Use Value: 70dB CMRR and 60dB PSRR ensure stable triggering despite supply ripple and nearby RF interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3692IDR | Higher supply current (350nA typical), slower propagation delay (15μs), same 2.5V–5.5V supply range. | Lower power sensitivity makes it unsuitable for multi-year coin-cell operation; better for cost-sensitive consumer devices. | Select TLV3692IDR only if sub-μA quiescent current is not required and board space allows larger SOT-23-8 footprint. |
| LMV393QDR | Higher supply current (20μA), faster propagation delay (300ns), wider temp range (−40°C to +125°C), but no internal hysteresis. | Requires external hysteresis resistors for noise immunity - increases component count and layout complexity. | Choose LMV393QDR when speed dominates over power, and design can accommodate external feedback network. |
Compared with TLV3692IDR and LMV393QDR, the MAX9022ASA-T uniquely combines sub-3μA quiescent current, built-in 4mV hysteresis, and rail-to-rail output in a standard SO-8 package - making it optimal for long-life, noise-prone, low-voltage sensing nodes where layout simplicity and power budget are primary constraints.
Availability
MAX9022ASA-T is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection, and threshold discriminators requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX9022ASA-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 MAX9021/MAX9022/MAX9024 family was designed specifically for ultra-low-power, space-constrained threshold detection in portable and battery-operated equipment - prioritizing micropower operation, wide supply range, and integrated noise immunity.
FAQ
What is the maximum capacitive load the MAX9022ASA-T output can drive without oscillation?
The MAX9022ASA-T output is stable with up to 150pF capacitive load, as specified in the Absolute Maximum Ratings table. Driving loads beyond this value may cause sustained oscillations or increased propagation delay. For loads >150pF, add a series resistor (e.g., 100Ω) close to the output pin to isolate capacitance and maintain stability - verified in Typical Operating Characteristics Figure toc08 and toc09.
Does the MAX9022ASA-T support dual-supply operation, and what are the voltage limits?
Yes, the MAX9022ASA-T supports dual-supply operation from ±1.25V to ±2.75V, derived from its 2.5V to 5.5V single-supply specification (VDD − VSS = 2.5V to 5.5V). When used with dual supplies, VSS becomes the negative rail and VDD the positive rail - maintaining full functionality including rail-to-rail output and common-mode range from VSS to VDD − 1.1V.
Can the MAX9022ASA-T be used with input signals exceeding the supply rails?
The MAX9022ASA-T allows input voltages from −0.3V to (VDD + 0.3V) relative to VSS, per Absolute Maximum Ratings. However, functional operation is guaranteed only within the common-mode range (VSS to VDD − 1.1V). Inputs outside this range may cause phase reversal unless the device's "no phase reversal" feature is active - confirmed in the Detailed Description section for overdriven conditions.
What is the purpose of the 4mV internal hysteresis in the MAX9022ASA-T?
The 4mV internal hysteresis in the MAX9022ASA-T prevents output oscillation when input signals change slowly or contain noise near the trip point. It creates distinct upper and lower switching thresholds, ensuring clean, bounce-free transitions - eliminating the need for external hysteresis resistors in applications like battery voltage monitoring or photodiode pulse detection.
Is the MAX9022ASA-T pin-compatible with other variants in the MAX9022 family?
Yes, all MAX9022 variants - including MAX9022AKA+T (SOT23-8), MAX9022AUA+T (μMAX), and MAX9022ASA+T - share identical 8-pin pinouts per the Pin Configurations diagram. The SO package (MAX9022ASA-T) uses the same terminal numbering and function mapping as the SOT23 and μMAX versions, enabling drop-in replacement across packages without PCB redesign.
MAX9022ASA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
MAX9022ASA-T FAQ
1.How can I place an order for MAX9022ASA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9022ASA-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 MAX9022ASA-T reliable?
The price and inventory of MAX9022ASA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9022ASA-T is usually 5 days.
3.What payment methods are accepted for MAX9022ASA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9022ASA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9022ASA-T?
MAX9022ASA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9022ASA-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 MAX9022ASA-T?
For technical support, including MAX9022ASA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9022ASA-T requirements.
6.How does Aetrix verify that MAX9022ASA-T is sourced from the original manufacturer or authorized distributors?
All MAX9022ASA-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 MAX9022ASA-T meets industry standards.
7.What is the process for return or replacement of MAX9022ASA-T?
All MAX9022ASA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9022ASA-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 MAX9022ASA-T part is unused and in its original packaging.
Return procedure for MAX9022ASA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9022ASA-T Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
