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Analog Devices Inc./Maxim Integrated MAX932ESA-TG068
- Part No.:
- MAX932ESA-TG068
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- -
- Datasheet:
-
MAX932ESA-TG068.pdf
- Description:
- ULTRA LOW-POWER, LOW-COST COMPAR
- Quantity:
- Payment:
- Shipping:
Inventory:1,168
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Product details
Overview
MAX932ESA-TG068 from Maxim Integrated is a dual micropower comparator with integrated 1.182V ±2% bandgap reference, programmable hysteresis via HYST pin, TTL/CMOS-compatible push-pull outputs, and ultra-low 4µA max supply current over –40°C to +85°C. It operates from single +2.5V to +11V or dual ±1.25V to ±5.5V supplies, with input common-mode range extending from V– to (V+ – 1.3V), enabling use in battery-powered threshold detection and window comparator circuits.
For engineers reviewing the MAX932ESA-TG068 datasheet, MAX932ESA-TG068 pinout, MAX932ESA-TG068 application, or MAX932ESA-TG068 equivalent, key selection considerations include its dual-comparator architecture, internal reference accuracy, hysteresis programming method, output drive capability (40mA source / 5mA sink), and compatibility with low-voltage single-supply systems requiring stable micropower operation.
Technical Context
The MAX932ESA-TG068 implements two independent comparators sharing a single internal 1.182V reference and one HYST pin for simultaneous hysteresis control across both channels. Its output stage eliminates crowbar current during transitions, minimizing supply-line parasitic feedback and improving layout tolerance.
Input voltage range spans from V– to within 1.3V of V+, supporting rail-to-rail sensing in single-supply configurations where V– = GND. The HYST pin accepts voltages from (REF – 50mV) to REF, enabling precise hysteresis bands up to 100mV using two external resistors without feedback loops or complex calculations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply or ±1.25V to ±5.5V dual supply - supports direct interfacing with 3V/5V logic and bipolar sensor signals. |
| Quiescent Current | <4µA max over –40°C to +85°C - enables multi-year operation on coin-cell batteries in always-on monitoring systems. |
| Reference Voltage | 1.182V ±2% at V– - provides stable, temperature-compensated threshold generation without external components. |
| Propagation Delay | 12µs typical at 10mV overdrive - ensures timely response in low-speed control and alarm circuits. |
| Output Drive | 40mA continuous source / 5mA sink - directly drives LEDs, small relays, or logic inputs without buffer stages. |
| Input Offset Voltage | ±10mV max - defines minimum detectable differential signal in precision threshold applications. |
| Hysteresis Control | Voltage-programmable via HYST pin (REF – 50mV to REF) - simplifies noise-immune level detection with predictable 2×(REF – VHYST) hysteresis band. |
Pinout & Package
MAX932ESA-TG068 is housed in an 8-pin µMAX package (3mm × 3mm, 0.5mm pitch), rated for –40°C to +85°C operation. Pin 1 is OUTA, Pin 2 is V–, Pin 3 is INA+, Pin 4 is INA–, Pin 5 is INB+, Pin 6 is INB–, Pin 7 is V+, Pin 8 is REF.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA (Pin 1) | Comparator A output | Push-pull TTL/CMOS-compatible output swinging from V+ to V–; sources 40mA, sinks 5mA. |
| V– (Pin 2) | Negative supply | Connect to GND for single-supply operation; defines reference point for REF and input common-mode range. |
| INA+ (Pin 3) | Noninverting input A | Accepts signals from V– to (V+ – 1.3V); high-impedance (±0.01nA leakage) for minimal loading. |
| INA– (Pin 4) | Inverting input A | Matches INA+ specs; used with INA+ to form first comparator pair with adjustable hysteresis. |
| INB+ (Pin 5) | Noninverting input B | Identical electrical characteristics to INA+; enables second independent comparison channel. |
| INB– (Pin 6) | Inverting input B | Matches INB+ specs; shares same HYST pin and REF for coordinated dual-threshold detection. |
| V+ (Pin 7) | Positive supply | Accepts +2.5V to +11V; powers both comparators and reference; supports dual-supply biasing. |
| REF (Pin 8) | Reference output | 1.182V ±2% referenced to V–; sources 15µA/sinks 8µA; must not be bypassed. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | <4µA max over full industrial temperature range - extends battery life in portable instrumentation and IoT sensors. |
| Integrated 2% accurate reference | 1.182V ±2% bandgap output referenced to V– - eliminates need for external precision reference ICs or resistor dividers. |
| Programmable hysteresis | Single HYST pin controls hysteresis for both comparators using two resistors - reduces component count and PCB area vs. discrete feedback networks. |
| No crowbar switching current | Output stage avoids shoot-through during transitions - prevents supply glitches and eliminates need for heavy local decoupling. |
| Rail-to-rail input capability | Inputs operate from V– to (V+ – 1.3V) - enables direct sensing of ground-referenced signals in single-supply systems. |
Applications
| Battery-Powered Threshold Detector | Window Comparator System |
|---|---|
Use Scenario: Monitoring lithium-ion cell voltage during charging/discharging to trigger under-voltage lockout or over-voltage protection. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper and lower thresholds derived from internal REF and resistor dividers; HYST pin sets hysteresis to prevent chatter near trip points. Use Value: Eliminates external reference and reduces BOM count by 3–4 components while maintaining ±2% threshold accuracy across temperature. | Use Scenario: Detecting valid supply rail voltage (e.g., 4.5V–5.5V) in embedded microcontroller power management. IC Role / Device Role / Timing Role: MAX932ESA-TG068's two comparators implement undervoltage (OUTA) and overvoltage (OUTB) flags; AND-gated output generates clean "power-good" signal. Use Value: Internal REF ensures matched threshold tracking; shared HYST pin guarantees symmetrical hysteresis on both edges without calibration. |
| Oscillator Circuit with Hysteresis | Auto-Shutoff Power Switch |
Use Scenario: Building relaxation oscillator for LED blink timing or system wake-up pulses in ultra-low-power nodes. IC Role / Device Role / Timing Role: One comparator acts as Schmitt trigger with RC network tied to HYST and REF; second comparator monitors timing capacitor voltage. Use Value: Programmable HYST voltage enables precise control of oscillation frequency and duty cycle without trimming resistors. | Use Scenario: Enabling timed shutdown of peripheral circuits after user inactivity (e.g., handheld medical device display backlight). IC Role / Device Role / Timing Role: Comparator A triggers latching circuit upon button press; Comparator B monitors RC decay time via HYST-controlled threshold to initiate auto-off. Use Value: 4µA quiescent current allows >1-year standby life on CR2032; 40mA output drives MOSFET gate directly without driver IC. |
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 |
|---|---|---|---|
| MAX932CSA | Same functionality and pinout; commercial temp range (0°C to +70°C) vs. extended (–40°C to +85°C); SO-8 package instead of µMAX. | Suitable for cost-sensitive consumer electronics where industrial temperature range is not required. | Select MAX932CSA when board space is less constrained and ambient operating temperature stays within 0°C–70°C. |
| MAX922ESA | Dual comparator with 1% reference accuracy; otherwise identical pinout, package, and electrical specs except REF tolerance and slightly higher supply current (5µA max). | Better suited for precision thresholding where ±1% reference error is mandatory, e.g., calibrated sensor interfaces. | Choose MAX922ESA when reference accuracy dominates over micropower optimization and ±1% REF tolerance is specified. |
Compared with MAX932CSA and MAX922ESA, the MAX932ESA-TG068 uniquely balances extended temperature operation, ultra-small µMAX footprint, and 2% reference accuracy at sub-4µA quiescent current-making it optimal for space-constrained industrial battery monitors where reliability across thermal extremes is critical.
Availability
MAX932ESA-TG068 is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, oscillator circuits, and alarm circuits requiring stable component supply with guaranteed long-term availability.
Supply support for MAX932ESA-TG068 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, communications, and computing markets.
The MAX931–MAX934 family was engineered specifically for micropower sensing applications demanding integrated reference accuracy, programmable hysteresis, and robust output drive in minimal footprint-targeting portable instrumentation, energy harvesting, and always-on monitoring systems.
FAQ
What is the operating temperature range of the MAX932ESA-TG068?
The MAX932ESA-TG068 is rated for –40°C to +85°C operation, matching the extended temperature grade (E-grade) specification. This range is confirmed in the Ordering Information table and Typical Operating Characteristics plots, ensuring reliable performance in industrial and automotive environments where ambient temperatures exceed commercial limits. The MAX932ESA-TG068 maintains its <4µA max supply current and 1.182V ±2% reference accuracy across this full range.
Does the MAX932ESA-TG068 require external bypass capacitors?
No external bypass capacitors are required for the MAX932ESA-TG068 if the power supply impedance is low. However, a 100nF ceramic capacitor placed close to V+ and V– pins is recommended when supply leads are long or source impedance is high, per the Board Layout and Bypassing section. Critically, the REF pin must never be bypassed - doing so degrades reference stability and increases noise, as explicitly warned in the datasheet.
How is hysteresis implemented on the MAX932ESA-TG068?
Hysteresis on the MAX932ESA-TG068 is implemented using the HYST pin (Pin 5 in µMAX package), which accepts a voltage between (REF – 50mV) and REF. Connecting two resistors - R1 from REF to HYST and R2 from HYST to V– - sets the hysteresis band to approximately 2×(REF – VHYST). This method applies identical hysteresis to both comparators without external feedback, eliminating calculation complexity and component mismatch errors inherent in traditional positive-feedback designs.
Can the MAX932ESA-TG068 operate from a 3V single supply?
Yes, the MAX932ESA-TG068 operates from a +2.5V to +11V single supply, fully supporting 3V systems. At 3V, its supply current remains below 4µA (typical 3.0µA), input common-mode range extends from V– (GND) to 1.7V, and propagation delay increases slightly to 14µs (vs. 12µs at 5V). All electrical characteristics - including reference voltage (1.182V ±2%), output drive, and hysteresis control - remain valid and tested at 3V per the 3V Operation Electrical Characteristics tables.
Is the MAX932ESA-TG068 pin-compatible with any other Maxim comparators?
No, the MAX932ESA-TG068 is not pin-compatible with the MAX922 or other members of the MAX921–MAX924 family. As explicitly stated in the datasheet: "The MAX932 and MAX922 are not pin-compatible." While MAX932 shares the same 8-pin µMAX footprint as MAX922, their pin assignments differ - notably, MAX922 uses Pin 2 as GND whereas MAX932ESA-TG068 uses Pin 2 as V–, and MAX922 lacks a dedicated HYST pin. Interchanging them would cause functional failure or damage.
MAX932ESA-TG068 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- -
- :
- -
MAX932ESA-TG068 FAQ
1.How can I place an order for MAX932ESA-TG068 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX932ESA-TG068 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 MAX932ESA-TG068 reliable?
The price and inventory of MAX932ESA-TG068 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX932ESA-TG068 is usually 5 days.
3.What payment methods are accepted for MAX932ESA-TG068?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX932ESA-TG068 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX932ESA-TG068?
MAX932ESA-TG068 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX932ESA-TG068 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 MAX932ESA-TG068?
For technical support, including MAX932ESA-TG068 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX932ESA-TG068 requirements.
6.How does Aetrix verify that MAX932ESA-TG068 is sourced from the original manufacturer or authorized distributors?
All MAX932ESA-TG068 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 MAX932ESA-TG068 meets industry standards.
7.What is the process for return or replacement of MAX932ESA-TG068?
All MAX932ESA-TG068 units undergo pre-shipment inspection (PSI). If there is an issue with MAX932ESA-TG068, 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 MAX932ESA-TG068 part is unused and in its original packaging.
Return procedure for MAX932ESA-TG068:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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