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Analog Devices Inc./Maxim Integrated MAX982EPA
- Part No.:
- MAX982EPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX982EPA.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,490
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Product details
Overview
MAX982EPA from Maxim Integrated is a dual, ultra-low-power, open-drain comparator with internal 1.182V ±2% voltage reference and programmable hysteresis via HYST pin. It operates from single 2.5V–11V or dual ±1.25V–±5.5V supplies, draws ≤4µA supply current over temperature, supports rail-to-rail input range (V− to V+ −1.3V), and targets battery-powered threshold detection and level translation.
For engineers reviewing the MAX982EPA datasheet, MAX982EPA pinout, MAX982EPA application, or MAX982EPA equivalent, key selection considerations include its dual-comparator architecture with shared reference and hysteresis control, 12µs propagation delay at 10mV overdrive, open-drain outputs sinking to V−, and extended −40°C to +85°C operating range in 8-pin PDIP package.
Technical Context
The MAX982EPA integrates two independent comparators sharing a single internal 1.182V bandgap reference referenced to V−, with dedicated HYST pin enabling simple resistor-based hysteresis programming for both channels simultaneously. Its input common-mode range extends from V− to V+ −1.3V, and it features open-drain outputs that sink current to V− (no GND pin), supporting wire-OR configurations and bipolar-to-single-ended conversion.
Supply operation spans 2.5V–11V single or ±1.25V–±5.5V dual rails; output voltage swing reaches up to 11V above V−. The device exhibits 12µs high-to-low propagation delay (10mV overdrive, 100pF load, 1MΩ pullup), ±10mV input offset voltage, and <5nA input leakage-enabling precision low-voltage sensing in energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V–11V or dual ±1.25V–±5.5V - enables direct use in 3V/5V battery or split-rail systems without level-shifting. |
| Quiescent Supply Current | ≤4µA over −40°C to +85°C - ensures multi-year operation on coin-cell batteries in always-on monitoring circuits. |
| Reference Voltage Accuracy | 1.182V ±2% (0°C to +70°C), ±3% (−40°C to +85°C) - provides stable threshold generation with known tolerance budget for precision window detection. |
| Propagation Delay | 12µs (high-to-low, 10mV overdrive) - supports sub-100kHz signal monitoring while maintaining micropower operation. |
| Input Common-Mode Range | V− to V+ −1.3V - allows direct sensing of signals near ground or rail without external biasing networks. |
| Output Configuration | Open-drain, sinks to V− - enables flexible pullup to any voltage ≤11V above V−, ideal for level translation between disparate logic domains. |
| Hysteresis Control | Dedicated HYST pin with 0–50mV adjustable range - permits precise, resistor-programmed hysteresis without feedback components or layout sensitivity. |
Pinout & Package
MAX982EPA is housed in an 8-pin plastic DIP (PDIP) package with through-hole mounting. Pin functions are validated per Maxim's official pin configuration diagram for MAX982 (DIP/SO/µMAX variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Comparator A open-drain output | Sinks current to V−; requires external pullup for logic-high assertion; supports wire-OR and level-shift applications. |
| 2 (V−) | Negative supply / reference ground | Connect to system ground in single-supply mode; reference and outputs are referenced to this node. |
| 3 (INA+) | Noninverting input of Comparator A | Accepts input signals from V− to V+ −1.3V; high-impedance (±0.01nA leakage) for minimal loading. |
| 4 (INA−) | Inverting input of Comparator A | Paired with INA+ for differential threshold comparison; matched offset and CMRR support accurate zero-crossing detection. |
| 5 (HYST) | Hysteresis control input | Accepts voltage from REF − 50mV to REF; sets symmetric hysteresis band (up to 100mV) for noise immunity. |
| 6 (REF) | Internal 1.182V reference output | Referenced to V−; sources/sinks up to 25µA/15µA; must not be bypassed; defines absolute threshold baseline. |
| 7 (V+) | Positive supply | Accepts 2.5V–11V single or ±1.25V–±5.5V dual supply; powers internal circuitry and determines output drive strength. |
| 8 (OUTB) | Comparator B open-drain output | Functionally identical to OUTA; shares REF and HYST; enables dual-threshold or window-detection topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparators with shared reference | Reduces component count and board space in dual-threshold applications (e.g., undervoltage/overvoltage detection) without sacrificing accuracy. |
| Programmable hysteresis via HYST pin | Eliminates need for external feedback resistors or op-amp stages-hysteresis is set with two resistors and remains stable across temperature. |
| Open-drain outputs sinking to V− | Enables level translation between systems with different supply domains (e.g., ±5V sensor to 3.3V MCU) without additional transistors or level shifters. |
| Rail-to-rail input capability (V− to V+ −1.3V) | Permits direct interface with sensors, battery monitors, or DAC outputs without input biasing or attenuation networks. |
| Ultra-low 4µA supply current | Supports >10-year operation on CR2032 coin cells in wake-up or periodic-sampling architectures, reducing maintenance and power design complexity. |
Applications
| Battery Voltage Monitor | Power-Good Window Detector |
|---|---|
|
Use Scenario: Monitoring Li-ion or alkaline battery voltage during deep-sleep operation in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator uses REF as threshold基准 and HYST for hysteresis; OUTA triggers low-battery alert, OUTB enables charge-complete indication. Use Value: 4µA quiescent current extends battery life by >30% vs. discrete solutions; integrated reference eliminates calibration drift and reduces BOM count by two precision resistors. |
Use Scenario: Validating regulated 5V supply stability in industrial controllers before enabling FPGA configuration. IC Role / Device Role / Timing Role: Configured as window detector with R-divider network on INA+/INA− and INB+/INB−; wired-OR output asserts "power good" only when voltage stays within 4.75V–5.25V. Use Value: Shared REF ensures matched thresholds; HYST pin simplifies hysteresis tuning to prevent chatter near trip points without iterative PCB revisions. |
| Level Translator (±5V → 3.3V) | Oscillator Threshold Generator |
|
Use Scenario: Converting analog outputs from legacy ±5V op-amps into clean 3.3V logic levels for ARM Cortex-M microcontrollers. IC Role / Device Role / Timing Role: One comparator compares ±5V input against REF (1.182V above V− = GND); open-drain output pulled to 3.3V generates compatible logic signal. Use Value: Output swing up to 11V above V− allows safe interfacing with higher-voltage domains; no level-shifter IC or MOSFET required-reduces footprint and EMI risk. |
Use Scenario: Setting precise zero-crossing thresholds in relaxation oscillators for low-power sensor wake-up timers. IC Role / Device Role / Timing Role: Comparator A compares capacitor ramp against REF; HYST pin adds controlled hysteresis to define oscillation frequency and reduce jitter. Use Value: 12µs propagation delay and <300µV effective input noise ensure stable, repeatable timing; internal reference removes dependency on external voltage dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX983EPA | Same pinout, same 1.182V ±2% reference, but configured as window comparator (INA−/INB+ tied internally); no HYST pin. | Fixed window function only-cannot be reconfigured as independent comparators or programmed for custom hysteresis. | Select MAX983EPA only when a dedicated window detector is required and flexibility for separate thresholds is unnecessary. |
| TLV3702IDR | CMOS-input dual comparator (Texas Instruments); 1.8V–16V supply; no internal reference; 850nA typical IQ; push-pull output. | Requires external reference and hysteresis network; higher supply current than MAX982EPA; incompatible open-drain requirement. | Choose TLV3702IDR only if push-pull output, wider supply range, or lower input bias current (<1pA) are critical-and reference/hysteresis can be added externally. |
Compared with MAX983EPA and TLV3702IDR, the MAX982EPA uniquely combines dual independent comparators, integrated ±2% reference, and programmable hysteresis in one 8-pin PDIP-offering lowest system-level component count and longest battery life for threshold-monitoring applications requiring design flexibility.
Availability
MAX982EPA is available at Aetrix Electronics and suitable for battery-powered systems, precision threshold detectors, and industrial level translators requiring stable component supply across extended temperature ranges.
Supply support for MAX982EPA 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 power, sensing, and interface applications in industrial, medical, and communications markets.
The MAX982EPA belongs to Maxim's ultra-low-power comparator family targeting energy-constrained systems; it was engineered to replace discrete comparator + reference + hysteresis circuits with a single, temperature-stable, low-quiescent solution.
FAQ
What is the operating temperature range for MAX982EPA?
The MAX982EPA is specified for −40°C to +85°C operation (Extended temperature grade). This range is validated per Maxim's electrical characteristics tables and thermal derating curves, ensuring reliable performance in automotive cabin modules, outdoor IoT sensors, and industrial control panels where ambient extremes occur.
Does MAX982EPA require an external reference?
No, the MAX982EPA includes an internal 1.182V ±2% bandgap reference output on pin 6 (REF), referenced to V−. This eliminates the need for external reference ICs or resistor dividers in most threshold-detection applications, reducing cost, board area, and calibration drift-though external buffering may be used if >25µA load is required.
Can MAX982EPA operate from a 3V single supply?
Yes, the MAX982EPA operates from 2.5V to 11V single supply (or ±1.25V to ±5.5V dual supply). At 3V, it maintains ≤4µA supply current, 12µs propagation delay, and full input common-mode range (0V to 1.7V), making it ideal for 3V coin-cell or LiFePO₄-powered systems without voltage boosting.
How is hysteresis programmed on MAX982EPA?
Hysteresis is programmed using the HYST pin (pin 5): connect R₁ between REF and HYST, and R₂ between HYST and V−. The hysteresis band equals ~2×(REF − VHYST), adjustable from 0 to 100mV. This method avoids external feedback loops, minimizes current draw, and ensures matched hysteresis for both comparators in the MAX982EPA.
What is the maximum output voltage swing of MAX982EPA?
The MAX982EPA open-drain outputs (OUTA and OUTB) support up to 11V above V−, regardless of V+ level. For example, with V− = 0V (GND), outputs swing to 11V; with V− = −5V, outputs swing to +6V. This enables robust level translation even when V+ is unpowered-critical for hot-swap and fail-safe interface designs.
MAX982EPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 6µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Through Hole
- :
- 8-PDIP
MAX982EPA FAQ
1.How can I place an order for MAX982EPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX982EPA 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 MAX982EPA reliable?
The price and inventory of MAX982EPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX982EPA is usually 5 days.
3.What payment methods are accepted for MAX982EPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX982EPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX982EPA?
MAX982EPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX982EPA 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 MAX982EPA?
For technical support, including MAX982EPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX982EPA requirements.
6.How does Aetrix verify that MAX982EPA is sourced from the original manufacturer or authorized distributors?
All MAX982EPA 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 MAX982EPA meets industry standards.
7.What is the process for return or replacement of MAX982EPA?
All MAX982EPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX982EPA, 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 MAX982EPA part is unused and in its original packaging.
Return procedure for MAX982EPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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