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Analog Devices Inc./Maxim Integrated MAX9027EBT+TG47
- Part No.:
- MAX9027EBT+TG47
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX9027EBT+TG47.pdf
- Description:
- MAX9027EBT+TG47
- Quantity:
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Product details
Overview
MAX9027EBT+TG47 from Maxim Integrated is a nanopower, push-pull output comparator in a 6-bump UCSP package (1.0mm × 1.52mm), designed for ultra-low-power battery-monitoring systems. It operates from +1.8V to +5.5V, draws only 0.6µA supply current at 1.8V, features Beyond-the-Rails™ inputs extending ±200mV beyond supply rails, and delivers rail-to-rail CMOS output swing with ±5mA drive capability - enabling direct interface with microcontrollers in 2-cell Li-ion or alkaline battery management.
For engineers reviewing the MAX9027EBT+TG47 datasheet, MAX9027EBT+TG47 pinout, MAX9027EBT+TG47 application, or MAX9027EBT+TG47 equivalent, key selection criteria include its guaranteed sub-2V operation, internal hysteresis (4mV), input offset voltage ≤5mV over temperature, propagation delay of 14µs at 5V, and compatibility with space-constrained portable medical sensors and telemetry nodes requiring stable nanoscale quiescent current.
Technical Context
The MAX9027EBT+TG47 implements a BiCMOS input stage with ESD-protected Beyond-the-Rails™ inputs (VEE − 0.2V to VCC + 0.2V) and a crowbar-current-free break-before-make push-pull output stage. Its input bias current is ≤2nA over temperature, and it integrates 4mV of internal hysteresis to prevent oscillation during slow signal transitions.
This device lacks an on-board reference (unlike MAX9025/MAX9026), making it suitable for externally referenced threshold detection. Its supply current remains stable across 1.8V–5.5V and −40°C to +85°C, with no phase reversal under overdriven inputs - critical for reliable zero-crossing and battery-voltage window detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports full discharge range of 2-cell alkaline (3.0V → 1.8V) and Li-ion (4.2V → 2.7V) batteries without brownout. |
| Supply Current | 0.6µA typical at 1.8V - enables >2.8 million hours of operation on a 2000mAh AA battery pair (per datasheet Table 1). |
| Input Offset Voltage | ≤5mV (max, −40°C to +85°C) - ensures accurate threshold detection within ±5mV error across industrial temperature range. |
| Propagation Delay | 14µs high-to-low, 40µs low-to-high at 5V - balances speed and power for battery-critical wake-up and alert functions. |
| Output Drive | ±5mA rail-to-rail CMOS push-pull - directly drives logic inputs or small LEDs without external buffers or level shifters. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows sensing at ground or supply line (e.g., battery cathode monitoring) without resistor dividers. |
| Hysteresis | 4mV (input-referred) - suppresses noise-induced chatter on slow-moving signals like thermistor or battery voltage ramps. |
Pinout & Package
MAX9027EBT+TG47 is housed in a 6-bump wafer-level chip-scale package (UCSP™), measuring 1.0mm × 1.52mm with bumps on bottom. The package is RoHS-compliant and optimized for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (A1) | Positive supply voltage | Accepts 1.8V–5.5V; powers internal circuitry and enables rail-to-rail output swing. |
| VEE (A3/B2) | Negative supply voltage / ground reference | Typically connected to system GND; defines lower bound of input/output voltage ranges. |
| IN+ (B1) | Noninverting input | Accepts signals up to VEE − 0.2V or VCC + 0.2V; used for threshold comparison against IN−. |
| IN− (B3) | Inverting input | Accepts same Beyond-the-Rails™ range; commonly tied to reference voltage or sensor output. |
| OUT (A2) | CMOS push-pull output | Sinks and sources up to ±5mA; provides clean, glitch-free transitions without external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ input range | Enables direct sensing at ground or supply rail (e.g., battery cathode monitoring) without level-shifting resistors. |
| Crowbar-current-free switching | Minimizes supply-current surges during output transitions, reducing need for large bypass capacitors and extending battery life. |
| Internal 4mV hysteresis | Eliminates oscillation on noisy or slowly varying inputs (e.g., thermistor outputs), ensuring single, clean output transitions. |
| Rail-to-rail CMOS push-pull output | Drives logic inputs directly across full VCC–VEE range; avoids open-drain pull-up compromises in mixed-voltage systems. |
| Ultra-low 0.6µA supply current | Supports multi-year operation in always-on telemetry nodes and wearable health monitors powered by coin cells or small Li-ion packs. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Telemetry |
|---|---|
|
Use Scenario: Real-time monitoring of voltage decay across two series-connected alkaline or NiMH cells in remote asset trackers. IC Role / Device Role / Timing Role: Comparator detecting when stacked battery voltage falls below 2.4V (low-voltage warning) or rises above 3.0V (recharge confirmation). Use Value: 0.6µA quiescent current extends operational lifetime beyond 3 years on 2000mAh cells; Beyond-the-Rails™ inputs eliminate need for resistor dividers on high-side sensing. |
Use Scenario: Wake-up trigger for LoRaWAN sensor nodes measuring soil moisture or ambient temperature at 10-minute intervals. IC Role / Device Role / Timing Role: Low-power comparator enabling MCU sleep mode until analog sensor output crosses predefined threshold. Use Value: Sub-1µA total system standby current achieved; internal hysteresis prevents false wake-ups from sensor noise or EMI. |
| Medical Wearable Sensors | Logic-Level Translation |
|
Use Scenario: Heart rate monitor using photodiode signal conditioning where output must trigger on pulse amplitude thresholds. IC Role / Device Role / Timing Role: Zero-crossing detector and amplitude comparator converting analog photoplethysmogram (PPG) signal into digital timing pulses for HR calculation. Use Value: Input offset ≤5mV ensures consistent pulse detection across body temperatures; rail-to-rail output interfaces directly with 1.8V/3.3V MCU GPIOs. |
Use Scenario: Interfacing 5V legacy sensor outputs to 3.3V or 1.8V microcontroller I/O pins in portable diagnostic equipment. IC Role / Device Role / Timing Role: Level translator using MAX9027EBT+TG47's push-pull output to drive 3.3V logic while powered from 5V supply. Use Value: Eliminates external MOSFET translators; 14µs propagation delay supports >50kHz signal edge rates in digital sensor interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDCKR | 0.55µA supply current, 1.8V–5.5V, open-drain output, no internal hysteresis | Requires external hysteresis network; unsuitable for direct push-pull logic drive | Select when lowest possible current is critical and external hysteresis can be added; verify layout sensitivity to noise without built-in hysteresis. |
| MAX40002ANA+T | 0.9µA supply current, 1.7V–5.5V, push-pull output, 5mV hysteresis, SC70-5 package | Larger 2.0mm × 2.1mm footprint; higher current draw reduces battery life by ~50% vs. MAX9027EBT+TG47 | Select when board space permits larger package and slightly higher accuracy (1.5mV max offset) justifies 50% current penalty. |
Compared with TLV3691IDCKR and MAX40002ANA+T, MAX9027EBT+TG47 uniquely combines 0.6µA current, integrated 4mV hysteresis, and push-pull output in a 1.0mm × 1.52mm UCSP - delivering optimal trade-off between miniaturization, self-contained noise immunity, and direct logic interfacing for space- and energy-constrained designs.
Availability
MAX9027EBT+TG47 is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, and medical wearable sensor applications requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX9027EBT+TG47 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) is a semiconductor company specializing in precision analog, mixed-signal, and power management ICs for industrial, medical, and communications markets.
The MAX9025–MAX9028 family was designed specifically for nanopower, rail-aware voltage monitoring in battery-powered portable electronics - emphasizing minimal supply current, Beyond-the-Rails™ input flexibility, and robust output drive in chip-scale packaging.
FAQ
What is the operating temperature range for MAX9027EBT+TG47?
The MAX9027EBT+TG47 is specified for continuous operation from −40°C to +85°C. All electrical parameters - including supply current (≤1.25µA), input offset voltage (≤10mV), and propagation delay - are guaranteed across this full industrial temperature range, making it suitable for outdoor telemetry and automotive cabin applications.
Does MAX9027EBT+TG47 include an internal voltage reference?
No, MAX9027EBT+TG47 does not include an internal voltage reference. It belongs to the "without reference" variant of the MAX9025–MAX9028 family. Unlike MAX9025/MAX9026 (which integrate a 1.236V ±1% reference), MAX9027EBT+TG47 requires an external reference or resistor divider for threshold setting - reducing quiescent current to 0.6µA and simplifying use in externally referenced designs.
What is the maximum output sink/source current for MAX9027EBT+TG47?
MAX9027EBT+TG47 provides ±5mA output drive capability in push-pull configuration. At VCC = 5V and TA = +25°C, the output voltage swing remains within 400mV of the rails (VOL ≤ 400mV, VOH ≥ VCC − 400mV) with 5mA load, enabling direct interface with standard logic families and small indicator LEDs without external drivers.
Can MAX9027EBT+TG47 be used for zero-crossing detection?
Yes, MAX9027EBT+TG47 is well-suited for zero-crossing detection. Its input common-mode range extends to VEE − 0.2V (e.g., −0.2V with VEE = 0V), allowing the inverting input to be tied directly to ground while the noninverting input accepts AC-coupled signals. Internal 4mV hysteresis prevents chatter near the crossing point, and crowbar-current-free switching minimizes supply disturbance.
Is MAX9027EBT+TG47 RoHS-compliant and lead-free?
Yes, MAX9027EBT+TG47 is RoHS-compliant and lead-free. The "+" suffix in the part number explicitly denotes lead(Pb)-free/RoHS-compliant packaging per Maxim Integrated's ordering conventions. The UCSP package uses lead-free bump metallurgy and conforms to JEDEC J-STD-020 reflow profiles.
MAX9027EBT+TG47 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:
- -
- :
- -
MAX9027EBT+TG47 FAQ
1.How can I place an order for MAX9027EBT+TG47 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9027EBT+TG47 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 MAX9027EBT+TG47 reliable?
The price and inventory of MAX9027EBT+TG47 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9027EBT+TG47 is usually 5 days.
3.What payment methods are accepted for MAX9027EBT+TG47?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9027EBT+TG47 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9027EBT+TG47?
MAX9027EBT+TG47 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9027EBT+TG47 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 MAX9027EBT+TG47?
For technical support, including MAX9027EBT+TG47 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9027EBT+TG47 requirements.
6.How does Aetrix verify that MAX9027EBT+TG47 is sourced from the original manufacturer or authorized distributors?
All MAX9027EBT+TG47 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 MAX9027EBT+TG47 meets industry standards.
7.What is the process for return or replacement of MAX9027EBT+TG47?
All MAX9027EBT+TG47 units undergo pre-shipment inspection (PSI). If there is an issue with MAX9027EBT+TG47, 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 MAX9027EBT+TG47 part is unused and in its original packaging.
Return procedure for MAX9027EBT+TG47:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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