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Analog Devices Inc./Maxim Integrated MAX9031AUK+G55
- Part No.:
- MAX9031AUK+G55
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX9031AUK+G55.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,358
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Product details
Overview
MAX9031AUK+G55 from Maxim Integrated is a single, rail-to-rail output comparator optimized for low-power, single-supply operation from +2.5V to +5.5V, featuring 188ns propagation delay, 35µA supply current per comparator, and 4mV internal hysteresis. It operates across -40°C to +125°C and is used in portable sensor signal detection and battery-powered threshold discrimination.
For engineers reviewing the MAX9031AUK+G55 datasheet, MAX9031AUK+G55 pinout, MAX9031AUK+G55 application, or MAX9031AUK+G55 equivalent, key selection criteria include input common-mode range (VSS to VDD – 1.1V), no phase reversal under overdrive, rail-to-rail output swing, and ultra-small 5-pin SOT23 footprint suitability for space-constrained embedded systems.
Technical Context
The MAX9031AUK+G55 implements a CMOS comparator core with internal hysteresis to prevent oscillation on slow-moving inputs. Its input stage supports common-mode voltages up to VDD – 1.1V and exhibits ±5mV max input offset voltage with ±1µV/°C drift.
Output switching minimizes power-supply glitches via reduced transition current, and the rail-to-rail output drives loads up to 150pF without sustained oscillation. Propagation delay remains stable across temperature (-40°C to +125°C) and supply voltage (2.5V–5.5V), with typical 188ns at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct integration into Li-ion and 3.3V logic systems without level shifting. |
| Propagation Delay | 188ns typical at 100mV overdrive - supports fast edge detection in digital line receivers and photodiode preamp interfaces. |
| Supply Current | 35µA per comparator - allows continuous operation in multi-year battery-powered applications such as keyless entry sensors. |
| Input Offset Voltage | ±5mV max - ensures reliable threshold detection within ±2.5mV accuracy at room temperature and full industrial range. |
| Hysteresis | 4mV built-in - eliminates noise-induced chatter on slowly varying signals like thermistor or potentiometer outputs. |
| Common-Mode Range | VSS to VDD – 1.1V - permits direct sensing of ground-referenced analog signals without external biasing networks. |
| Output Swing | Rail-to-rail - delivers full logic-level compatibility with 3.3V and 5V microcontrollers and FPGA I/O banks. |
Pinout & Package
The MAX9031AUK+G55 is housed in a 5-pin SOT23 package (package code U5+1), with 0.95mm pitch, 2.9mm × 1.6mm body size, and exposed pad optional for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | Differential input node; accepts signals up to VDD – 1.1V; high impedance (8nA max bias current). |
| 2 (IN+) | Noninverting Input | Differential input node; same common-mode and bias specs as IN−; used for reference or signal routing. |
| 3 (OUT) | Comparator Output | Rail-to-rail CMOS output; sinks or sources up to 4mA; compatible with TTL/CMOS logic families. |
| 4 (VSS) | Negative Supply | Ground reference; requires 0.1µF bypass capacitor close to pin for noise immunity. |
| 5 (VDD) | Positive Supply | +2.5V to +5.5V supply input; also requires local 0.1µF bypass to suppress switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| No Phase Reversal | Guaranteed under input overdrive - prevents false triggering when inputs exceed common-mode limits during transient events. |
| Low Switching Glitch | Minimized output transition current - reduces coupling into sensitive analog sections and improves system-level EMI performance. |
| Temperature-Stable Delay | 188ns propagation delay maintained across -40°C to +125°C - enables consistent timing in automotive and industrial environments. |
| High PSRR/CMRR | 72dB min power-supply and common-mode rejection - maintains accuracy despite supply ripple or shared ground noise. |
| Capacitive Load Drive | Stable with up to 150pF load - supports direct connection to long PCB traces or downstream logic without external buffering. |
Applications
| Battery-Powered Portable Systems | Sensor Signal Detection |
|---|---|
Use Scenario: Monitoring battery voltage against low-battery cutoff thresholds in handheld medical devices and wireless remotes. IC Role / Device Role / Timing Role: Single comparator performing precise voltage threshold detection with rail-to-rail output interfacing directly to MCU GPIO. Use Value: 35µA quiescent current extends battery life; 4mV hysteresis prevents chatter near trip point; wide supply range supports aging battery discharge curves. | Use Scenario: Converting analog outputs from ambient light or temperature sensors into clean digital logic levels. IC Role / Device Role / Timing Role: Threshold discriminator converting slow-moving resistive sensor signals into robust digital flags for microcontroller polling. Use Value: Input common-mode range extending to VDD – 1.1V allows direct connection to ratiometric sensors; no external bias required. |
| Photodiode Preamps | Digital Line Receivers |
Use Scenario: Amplifying and digitizing weak photocurrents in optical smoke detectors and pulse oximeters. IC Role / Device Role / Timing Role: High-speed comparator capturing fast light pulses after transimpedance amplification. Use Value: 188ns propagation delay preserves pulse timing integrity; low input bias current (8nA) avoids signal degradation in high-impedance TIA nodes. | Use Scenario: Recovering digital data from attenuated or distorted analog transmission lines in RS-485 or CAN bus receivers. IC Role / Device Role / Timing Role: Data slicer comparing incoming signal to self-biased reference generated by RC averaging. Use Value: No phase reversal ensures correct polarity recovery even with overshoot; rail-to-rail output drives logic cleanly without level translation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV331IDBVR | Higher 80µA supply current; 300ns propagation delay; no built-in hysteresis. | Requires external hysteresis network; less suitable for ultra-low-power or noise-prone environments. | Preferred where cost is primary constraint and board area allows external resistor network. |
| TLV3601DBVR | 2.5ns propagation delay; 85µA supply current; rail-to-rail input; no internal hysteresis. | Optimized for high-speed >10MHz applications; lacks integrated noise immunity for slow signals. | Select when sub-10ns response is mandatory and external hysteresis can be added. |
Compared with LMV331IDBVR and TLV3601DBVR, the MAX9031AUK+G55 uniquely balances ultra-low power (35µA), fast yet deterministic delay (188ns), and factory-trimmed 4mV hysteresis - making it optimal for battery-critical, noise-sensitive, and space-constrained industrial sensor nodes without design overhead.
Availability
MAX9031AUK+G55 is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor signal detection, and digital line receivers requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX9031AUK+G55 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
Maxim Integrated, now part of Analog Devices, designs precision analog and mixed-signal ICs for industrial, automotive, and communications markets.
The MAX9030/MAX9031/MAX9032/MAX9034 family was engineered specifically for low-cost, ultra-small footprint comparators in portable and sensor-edge applications demanding single-supply operation down to +2.5V.
FAQ
What is the operating temperature range for MAX9031AUK+G55?
The MAX9031AUK+G55 is specified for continuous operation from -40°C to +125°C. This extended industrial temperature range is guaranteed across all electrical parameters in the datasheet, including propagation delay, supply current, and input offset voltage, making MAX9031AUK+G55 suitable for under-hood automotive sensors and industrial control modules.
Does MAX9031AUK+G55 include internal hysteresis, and how does it affect circuit design?
Yes, MAX9031AUK+G55 includes 4mV of factory-trimmed internal hysteresis. This eliminates the need for external positive feedback resistors in most noise-prone applications, simplifying layout and reducing BOM count. The hysteresis band is centered on the input offset voltage, ensuring predictable switching thresholds without additional calibration - a key advantage of MAX9031AUK+G55 over generic comparators.
Can MAX9031AUK+G55 operate from a 2.5V supply, and what performance trade-offs occur?
Yes, MAX9031AUK+G55 is fully specified down to +2.5V single supply. At 2.5V, propagation delay increases to ~228ns (vs. 188ns at 5V), and output swing remains rail-to-rail but with slightly reduced drive strength. Supply current stays at 35µA typical. This makes MAX9031AUK+G55 ideal for direct connection to single-cell Li-ion or coin-cell systems where headroom is minimal.
Is MAX9031AUK+G55 pin-compatible with other comparators in the MAX903x family?
No, MAX9031AUK+G55 is not pin-compatible with MAX9030 (6-pin SC70/SOT23 with SHDN) or MAX9032 (8-pin SOT23 dual). It uses a dedicated 5-pin SOT23 pinout (IN−, IN+, OUT, VSS, VDD) with no shutdown function. Pin compatibility is limited to identical variants - e.g., MAX9031AXK+ (5-pin SC70) shares the same pinout but differs in package dimensions and thermal characteristics.
What is the maximum capacitive load MAX9031AUK+G55 can drive without oscillation?
MAX9031AUK+G55 is characterized to drive up to 150pF without sustained oscillation, as verified in the datasheet's "Maximum Capacitive Load" specification. This allows direct connection to long PCB traces, scope probes, or downstream logic gates without series termination or buffer stages - a verified capability of MAX9031AUK+G55 that simplifies interface design in compact layouts.
MAX9031AUK+G55 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- -
- Number of Elements:
- -
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- -
- :
- -
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- -
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- :
- -
MAX9031AUK+G55 FAQ
1.How can I place an order for MAX9031AUK+G55 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9031AUK+G55 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 MAX9031AUK+G55 reliable?
The price and inventory of MAX9031AUK+G55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9031AUK+G55 is usually 5 days.
3.What payment methods are accepted for MAX9031AUK+G55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9031AUK+G55 transactions.
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4.How is shipping managed for MAX9031AUK+G55?
MAX9031AUK+G55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9031AUK+G55 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 MAX9031AUK+G55?
For technical support, including MAX9031AUK+G55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9031AUK+G55 requirements.
6.How does Aetrix verify that MAX9031AUK+G55 is sourced from the original manufacturer or authorized distributors?
All MAX9031AUK+G55 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 MAX9031AUK+G55 meets industry standards.
7.What is the process for return or replacement of MAX9031AUK+G55?
All MAX9031AUK+G55 units undergo pre-shipment inspection (PSI). If there is an issue with MAX9031AUK+G55, 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 MAX9031AUK+G55 part is unused and in its original packaging.
Return procedure for MAX9031AUK+G55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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