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Analog Devices Inc./Maxim Integrated MAX983ESA
- Part No.:
- MAX983ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX983ESA.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,369
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Product details
Overview
The MAX983ESA from Maxim Integrated is a dual-channel, ultra-low-power comparator with integrated 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, features open-drain outputs sinking to V−, and supports input common-mode range from V− to (V+ − 1.3V). It is used in battery-powered threshold detectors and window comparators requiring rail-to-rail input operation and low quiescent power.
For engineers reviewing the MAX983ESA datasheet, MAX983ESA pinout, MAX983ESA application, or MAX983ESA equivalent, this page delivers verified technical context, exact pin functions, real-world design meaning of specifications, confirmed alternative parts with documented differences, and supply-chain support for industrial and portable electronics designs.
Technical Context
The MAX983ESA integrates two independent micropower comparators sharing a single internal bandgap reference and a dedicated HYST pin for simultaneous hysteresis programming on both channels. Its open-drain outputs sink current to V− (not GND), enabling direct interfacing with negative rails and bipolar-to-single-ended conversion without level-shifting components.
Input stage design allows operation with inputs extending 0.3V beyond supply rails, while propagation delay is 12µs (typical, 10mV overdrive) and input offset voltage is ±10mV. The device is specified for −40°C to +85°C and uses an 8-pin SO package with pinout identical to MAX973ESA/MAX982ESA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V–11V or dual ±1.25V–±5.5V - supports wide-input industrial sensors and battery-backed systems down to 2.5V minimum. |
| Quiescent Supply Current | ≤4µA over −40°C to +85°C - enables multi-year operation on coin-cell batteries in IoT endpoint sensors. |
| Reference Voltage Accuracy | 1.182V ±2% (0°C to +70°C), ±3% (−40°C to +85°C) - provides stable threshold generation without external precision references. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows direct sensing of signals near V+ in single-supply 3.3V/5V systems. |
| Propagation Delay | 12µs (typ, 10mV overdrive) - sufficient for slow-varying battery voltage monitoring and power-good sequencing. |
| Output Configuration | Open-drain, sinks to V− - enables wire-OR logic, level translation across isolated domains, and direct connection to negative rails. |
| Input Leakage Current | ±0.01nA (IN+, IN−), ±0.02nA (HYST) - minimizes error in high-impedance divider networks used for precision threshold setting. |
Pinout & Package
MAX983ESA uses an 8-pin SO (Small Outline) package, 150-mil body width, with standard SOICN footprint (JEDEC MS-012AA). Pin 1 is marked by beveled corner or dot; pin numbering follows counterclockwise convention from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Open-drain output of Comparator A - sinks current to V−; requires external pullup for logic-high assertion. |
| 2 | V− | Negative supply rail - connect to GND in single-supply mode; defines reference point for REF and output sink. |
| 3 | INA+ | Noninverting input of Comparator A - accepts signals from V− to (V+ − 1.3V); high-impedance node (±0.01nA leakage). |
| 4 | INB− | Inverting input of Comparator B - shares same electrical specs as INA+; enables differential or window configurations. |
| 5 | HYST | Hysteresis control input - voltage between REF and HYST sets hysteresis band (max 100mV); connects to REF if unused. |
| 6 | REF | 1.182V bandgap reference output referenced to V− - sources/sinks up to 25µA/15µA; must not be bypassed. |
| 7 | V+ | Positive supply rail - supports up to 11V total supply; powers internal circuitry and determines output sink strength. |
| 8 | OUTB | Open-drain output of Comparator B - electrically identical to OUTA; enables independent or wired-OR logic outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparator + reference in one 8-pin SO | Reduces BOM count and PCB area vs. discrete reference + dual-comparator solutions; eliminates layout-sensitive external reference routing. |
| Programmable hysteresis via single HYST pin | Enables consistent, matched hysteresis on both comparators using two resistors - avoids mismatch and instability from external feedback loops. |
| Input range includes negative rail | Supports direct interface to transducers or sensors with outputs below GND (e.g., thermocouples, current-sense amps), eliminating level-shifters. |
| Open-drain outputs sinking to V− | Permits level translation between domains with different ground potentials or negative supplies - critical for industrial I/O and battery switchover circuits. |
| Ultra-low 4µA supply current over temp | Extends battery life in always-on monitoring applications (e.g., smoke detectors, remote asset trackers) without sacrificing response time. |
Applications
| Battery Voltage Monitor | Power-Good Window Detector |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper (4.2V) and lower (3.0V) thresholds using resistor dividers and REF; HYST sets 50mV hysteresis per threshold. Use Value: Prevents false triggering due to noise or load transients; enables precise undervoltage/overvoltage shutdown without external hysteresis components. |
Use Scenario: Validating regulated 3.3V supply stability in industrial PLC modules before enabling FPGA configuration. IC Role / Device Role / Timing Role: MAX983ESA configured as window detector - OUTA asserts low below 3.1V, OUTB asserts low above 3.5V; outputs wire-ORed to generate active-high POWER_GOOD. Use Value: Guarantees system only boots when supply is within ±3% tolerance; eliminates need for separate supervisor IC and reduces component count. |
| Bipolar-to-Single-Ended Level Shifter | Low-Power Threshold Alarm |
Use Scenario: Converting ±5V analog sensor outputs (e.g., strain gauge bridge) to 0–3.3V logic-compatible signals in battery-powered data loggers. IC Role / Device Role / Timing Role: Comparator A compares inverted sensor signal against REF; open-drain output pulled to 3.3V - translates negative input excursions into digital logic transitions. Use Value: Eliminates need for op-amp level shifters and dual supplies; achieves rail-to-rail input compatibility and <4µA static power draw. |
Use Scenario: Detecting coolant temperature exceedance in automotive cabin controllers using NTC thermistor network. IC Role / Device Role / Timing Role: Single comparator channel (INA+/INB−) compares thermistor divider voltage against REF; HYST prevents chatter near trip point; OUTA drives LED driver or MCU interrupt. Use Value: Enables sub-1µA standby current in thermal protection circuits; reference accuracy ensures repeatable trip points across temperature without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator-with-reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX973ESA | 1.182V ±1% reference; otherwise identical pinout, supply, and hysteresis architecture. | Required where tighter reference accuracy (<±1%) is needed for precision thresholding (e.g., metrology-grade sensors). | Select MAX973ESA when reference drift must stay under ±1% over 0°C–+70°C; MAX983ESA suffices for general-purpose industrial monitoring. |
| TLV3702IDR | No internal reference; rail-to-rail input; 850nA supply current; push-pull output (not open-drain). | Requires external reference and pullup resistors; unsuitable for level-shifting or wire-OR; better for high-speed (>1µs) decisions. | Choose TLV3702IDR only when speed >1µs and push-pull drive are mandatory; MAX983ESA remains optimal for low-power, reference-integrated, open-drain use cases. |
Compared with MAX973ESA, MAX983ESA trades ±1% reference accuracy for cost reduction in non-critical threshold detection; compared with TLV3702IDR, it delivers integrated reference and open-drain flexibility at the expense of speed - making it uniquely suited for ultra-low-power, self-contained comparator applications.
Availability
MAX983ESA is available at Aetrix Electronics and suitable for battery-powered systems, industrial sensor interfaces, and power-supply monitoring applications requiring stable component supply, extended temperature operation (−40°C to +85°C), and long-term obsolescence management.
Supply support for MAX983ESA 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, emphasizing low-power innovation and integration.
The MAX983ESA belongs to Maxim's ultra-low-power comparator family targeting energy-constrained applications such as portable instrumentation, battery management, and always-on monitoring systems where micropower operation and integrated reference reduce system complexity.
FAQ
What is the maximum supply voltage for MAX983ESA?
The MAX983ESA supports a total supply voltage up to 11V - either as a single 2.5V–11V supply (with V− connected to GND) or dual ±1.25V–±5.5V supplies. Exceeding 11V total (e.g., V+ = +6V, V− = −6V) violates absolute maximum ratings and may cause permanent damage. Always observe the −0.3V to +12V limit between any two pins.
Can MAX983ESA operate from a 3.3V single supply?
Yes, MAX983ESA operates reliably from a 3.3V single supply (V+ = 3.3V, V− = GND). At 3.3V, typical supply current is 3.4µA (C temp) or 4.3µA (E temp), input common-mode range extends from 0V to 2.0V, and propagation delay remains ≤12µs with 10mV overdrive - making it ideal for modern low-voltage embedded systems.
Does MAX983ESA have a GND pin?
No, MAX983ESA does not have a dedicated GND pin. Pin 2 is labeled V− and serves as the negative supply reference - connect it to system GND in single-supply operation. The outputs sink to V−, not to a separate GND terminal, distinguishing it from MAX971/MAX981 which include a dedicated GND pin for output-stage isolation.
How is hysteresis implemented on MAX983ESA?
Hysteresis on MAX983ESA is implemented by connecting two resistors: R1 between REF and HYST, and R2 between HYST and V−. This creates a voltage divider that sets the HYST pin voltage, determining hysteresis band width (up to 100mV). The same hysteresis applies to both comparators - no separate configuration is needed for OUTA and OUTB.
What is the function of the REF pin on MAX983ESA?
The REF pin on MAX983ESA outputs a precision 1.182V bandgap reference voltage referenced to V− (not GND). It is rated for ±2% accuracy over −40°C to +85°C, can source up to 25µA and sink up to 15µA, and must never be bypassed with capacitors - doing so destabilizes the reference and increases noise. It directly feeds HYST and serves as threshold reference for both comparators.
MAX983ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- :
- 8-SOIC
MAX983ESA FAQ
1.How can I place an order for MAX983ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX983ESA 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 MAX983ESA reliable?
The price and inventory of MAX983ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX983ESA is usually 5 days.
3.What payment methods are accepted for MAX983ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX983ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX983ESA?
MAX983ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX983ESA 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 MAX983ESA?
For technical support, including MAX983ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX983ESA requirements.
6.How does Aetrix verify that MAX983ESA is sourced from the original manufacturer or authorized distributors?
All MAX983ESA 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 MAX983ESA meets industry standards.
7.What is the process for return or replacement of MAX983ESA?
All MAX983ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX983ESA, 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 MAX983ESA part is unused and in its original packaging.
Return procedure for MAX983ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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