My Inquiry
My Account
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:2,095
Please send an inquiry. Send us your inquiry, and we will respond immediately.
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 channel, 3μs propagation delay, 4mV internal hysteresis, rail-to-rail output swing, and operation from 2.5V to 5.5V single supply across -40°C to +125°C.
For engineers reviewing the MAX9022AUA+T datasheet, MAX9022AUA+T pinout, MAX9022AUA+T application, or MAX9022AUA+T equivalent, key selection criteria include ultra-low quiescent current, built-in hysteresis for noise immunity in sensor interfaces, μMAX® package footprint constraints, and guaranteed performance over automotive temperature range.
Technical Context
The MAX9022AUA+T implements two independent comparators with matched input stages, each featuring an input common-mode range extending from VSS to VDD – 1.1V and no phase reversal under overdrive. Its output stage is designed to minimize switching current transients, eliminating power-supply glitches during transitions.
Internal 4mV hysteresis is fixed and non-adjustable, centered around the input offset voltage (±1mV typical), and functions without external components. The device supports both single-supply (2.5V–5.5V) and dual-supply (±1.25V–±2.75V) configurations, with PSRR of 60–80dB and CMRR of 70–100dB over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 2.8μA per comparator - enables multi-year operation on coin-cell batteries in always-on threshold detection. |
| Propagation Delay | 3μs at VOD = 100mV - supports reliable signal edge detection up to ~100kHz input transition rates. |
| Hysteresis | 4mV fixed internal - prevents chatter on slow-moving inputs (e.g., thermistor or photodiode outputs) without external feedback. |
| Input Offset Voltage | ±1mV typical - ensures accurate trip-point setting within ±4mV total window including hysteresis. |
| Rail-to-Rail Output | VOL ≤ 2mV @ 10μA sink, VOH ≥ VDD – 2mV @ 10μA source - directly interfaces with 1.8V/3.3V logic without level-shifting. |
| Common-Mode Range | VSS to VDD – 1.1V - accommodates ground-referenced sensors and single-ended signals in low-voltage systems. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial monitoring, and extended-life portable equipment. |
Pinout & Package
The MAX9022AUA+T is housed in an 8-pin μMAX® package (3.0mm × 3.0mm, 0.5mm pitch), RoHS-compliant and lead(Pb)-free, with exposed pad for thermal enhancement and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain or push-pull output - rail-to-rail swing, capable of sinking 50mA short-circuit current. |
| 2 | INA− | Comparator A inverting input - high-impedance node (IBIAS ≤ 80nA), compatible with high-resistance sensor sources. |
| 3 | INA+ | Comparator A noninverting input - identical electrical characteristics to INA−; differential input voltage limited to ±6.6V. |
| 4 | VDD | Positive supply terminal - requires local 0.1μF ceramic bypass to VSS for stable high-speed operation. |
| 5 | VSS | Negative supply / ground reference - return path for all supply and output currents; must be low-impedance. |
| 6 | INB+ | Comparator B noninverting input - electrically isolated from INA±; supports independent reference or signal routing. |
| 7 | INB− | Comparator B inverting input - matched offset and bias current to INA± for dual-channel consistency. |
| 8 | OUTB | Comparator B output - functionally identical to OUTA; no internal cross-coupling between channels. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 2.8μA per comparator enables >10-year battery life in wake-on-event sensor nodes with 200mAh coin cell. |
| Fixed 4mV hysteresis | Eliminates need for external positive feedback resistors in threshold-detection applications, reducing BOM count and layout area. |
| Rail-to-rail output stage | Drives 10μA loads to within 2mV of rails, ensuring full logic-level compatibility with 1.8V, 2.5V, and 3.3V microcontrollers. |
| No phase reversal | Guarantees correct output polarity even when inputs exceed common-mode range - critical for overvoltage-tolerant sensor front-ends. |
| μMAX® package footprint | 3.0mm × 3.0mm body with 0.5mm pitch fits high-density portable PCBs where SOT23-8 is too large. |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
Use Scenario: Monitoring battery 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 (e.g., 3.4V), one for lower (e.g., 2.8V). Use Value: 2.8μA total quiescent current extends coin-cell lifetime beyond 3 years while maintaining precise 4mV hysteresis to prevent false triggers near thresholds. | Use Scenario: Converting analog output from MEMS accelerometer to digital interrupt signal for motion wake-up in IoT edge nodes. IC Role / Device Role / Timing Role: Single comparator channel comparing sensed acceleration against programmable reference voltage. Use Value: Input common-mode range down to VSS allows direct connection to ratiometric sensors; 3μs delay ensures sub-millisecond response to impact events. |
| Photodiode Preamps | Threshold Detectors/Discriminators |
Use Scenario: Amplifying and digitizing weak photocurrent from ambient light sensor in smart lighting control. IC Role / Device Role / Timing Role: Comparator A compares transimpedance amplifier output against adjustable threshold; Comparator B provides hysteresis-limited reference. Use Value: 4mV internal hysteresis suppresses noise-induced toggling from low-light flicker; rail-to-rail output drives MCU GPIO directly. | Use Scenario: Detecting door-open events via magnetic reed switch closure in access control panels. IC Role / Device Role / Timing Role: Dual comparator used for redundant threshold validation - one channel for primary detection, second for fail-safe confirmation. Use Value: -40°C to +125°C rating ensures reliability in outdoor enclosures; 2.5V minimum supply supports operation during brownout conditions. |
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 internal hysteresis; 1.8V min supply. | Better for ultra-long-life applications with relaxed timing; requires external hysteresis network for noise immunity. | Select TLV3692IDR only if sub-μA current dominates design priority and 4mV hysteresis can be added externally. |
| LMV393QDRQ1 | Higher supply current (20μA), faster delay (300ns), no internal hysteresis; AEC-Q100 qualified; wider temp range (-40°C to +125°C). | Preferred for automotive body electronics requiring higher speed and qualification; needs external hysteresis or filtering. | Choose LMV393QDRQ1 when AEC-Q100 compliance is mandatory and system-level noise mitigation is already implemented. |
Compared with TLV3692IDR and LMV393QDRQ1, the MAX9022AUA+T uniquely balances ultra-low 2.8μA current, 3μs speed, and factory-trimmed 4mV hysteresis in a space-constrained μMAX® package - making it optimal for cost-sensitive, battery-operated industrial and portable designs where integrated noise immunity is essential.
Availability
MAX9022AUA+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 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 energy-constrained applications demanding precision threshold detection with minimal board area and zero external hysteresis components.
FAQ
What is the operating supply voltage range for the MAX9022AUA+T?
The MAX9022AUA+T operates from 2.5V to 5.5V on a single supply, or ±1.25V to ±2.75V on dual supplies. This range supports direct integration with 3.3V and 5V systems, as well as low-voltage battery-powered designs such as those using Li-ion or coin cells. The MAX9022AUA+T maintains full specification compliance-including 2.8μA supply current and 3μs propagation delay-across this entire voltage span and the full -40°C to +125°C temperature range.
Does the MAX9022AUA+T require external hysteresis components?
No, the MAX9022AUA+T includes 4mV of factory-trimmed internal hysteresis, eliminating the need for external positive-feedback resistors in most noise-prone applications. This feature is especially valuable in compact layouts like those using the μMAX® package, where board space is constrained. While additional hysteresis can be added externally using two resistors, the internal 4mV band is sufficient for typical sensor interfacing and threshold detection tasks involving slow-moving signals, as confirmed in the MAX9022AUA+T datasheet's Applications Information section.
What is the input common-mode voltage range of the MAX9022AUA+T?
The MAX9022AUA+T features an input common-mode voltage range from VSS to VDD – 1.1V, enabling direct interface with ground-referenced sensors and single-ended signals without level-shifting circuitry. For example, at VDD = 3.3V, inputs can swing from 0V to 2.2V. This specification is guaranteed by CMRR testing and remains valid across the full -40°C to +125°C operating temperature range. The MAX9022AUA+T also guarantees no phase reversal when inputs exceed this range, enhancing robustness in transient-overvoltage conditions.
Is the MAX9022AUA+T pin-compatible with other packages in the MAX9022 family?
No, the MAX9022AUA+T uses the 8-pin μMAX® package (U8+1), which has a different pinout and footprint than the SOT23-8 (K8+5) or SO-8 (S8+2) variants of the MAX9022. Although all share identical electrical functionality and internal circuitry, the μMAX® package places OUTA on pin 1 and VSS on pin 5, whereas SOT23-8 places VSS on pin 2 and OUTA on pin 1. Therefore, PCB layout and land patterns must be specific to the U8+1 variant; migration between packages requires board redesign. The MAX9022AUA+T datasheet's Pin Configurations diagram confirms this distinct mapping.
What is the maximum capacitive load the MAX9022AUA+T output can drive without oscillation?
The MAX9022AUA+T output is stable with capacitive loads up to 150pF, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Driving larger loads may cause sustained oscillations or degraded propagation delay. For loads exceeding 150pF, a series resistor (e.g., 10Ω–50Ω) should be placed close to the output pin to isolate the comparator from the capacitance. This limitation applies equally to both OUTA and OUTB channels of the MAX9022AUA+T and is validated across the full operating temperature and supply voltage range.
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:
- 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
- :
- 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
-
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…
