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Analog Devices Inc./Maxim Integrated MAX9101ESA+T
- Part No.:
- MAX9101ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9101ESA+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,584
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Product details
Overview
MAX9101ESA+T from Analog Devices is an ultra-low-voltage, micropower open-drain comparator optimized for single-cell battery-powered systems. It operates from 1.0V to 5.5V supply, draws only 5μA quiescent current, delivers <4μs propagation delay, and features rail-to-rail input common-mode range (0V to VCC − 0.2V) - enabling full utilization of low-voltage rails in portable instrumentation and sensor interfaces.
For engineers reviewing the MAX9101ESA+T datasheet, MAX9101ESA+T pinout, MAX9101ESA+T application, or MAX9101ESA+T equivalent, key selection criteria include its open-drain output architecture, 1.0V minimum operating voltage, 5μA supply current at +1V, and compatibility with mixed-voltage logic translation (e.g., 1V-to-3V or 3V-to-5V level shifting).
Technical Context
The MAX9101ESA+T uses a BiCMOS input stage with rail-to-rail input capability down to the negative rail and supports input common-mode voltages up to VCC − 0.2V. Its open-drain output allows pull-up to up to +6V independent of VCC, enabling interoperability across voltage domains.
Propagation delay remains under 4μs across 1.0V–5.5V supply range with 50mV overdrive; input offset voltage is ±10mV max over temperature, and input bias current stays below ±30nA across the full operating range - ensuring stable threshold detection in low-power sensor monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.0V to 5.5V - enables direct operation from single alkaline, NiMH, or Li-ion cells without regulation. |
| Quiescent Supply Current | 5.0μA typical at +1V - extends battery life in always-on sensor wake-up or low-duty-cycle monitoring. |
| Propagation Delay | 3.3μs typical at +1V, 50mV overdrive - supports fast response in low-voltage power-good or battery-low detection. |
| Input Common-Mode Range | 0V to (VCC − 0.2V) - permits direct sensing of signals referenced to ground or near-rail thresholds. |
| Output Type | Open-drain - allows flexible pull-up to higher voltage rails (up to +6V), enabling logic-level translation and wired-OR bus configurations. |
| Input Offset Voltage | ±10mV max over −40°C to +85°C - ensures reliable trip-point accuracy in precision threshold applications. |
| Rail-to-Rail Input | Valid down to GND and up to VCC − 0.2V - eliminates need for input level-shifting in single-supply systems. |
Pinout & Package
MAX9101ESA+T is housed in an 8-pin SO (Small Outline) package (PKG CODE S8-2), with exposed pad not present. Pin functions are electrically identical to the SOT23-5 variant but mapped to an 8-pin layout with three no-connect (N.C.) pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | N.C. | No internal connection - must be left unconnected or tied to GND per PCB layout best practice; no electrical function. |
| 2 | IN− | Inverting input - accepts analog reference or feedback signal; supports rail-to-rail common-mode range. |
| 3 | IN+ | Noninverting input - used for signal sensing; matched input impedance and bias current to IN−. |
| 4 | GND | Analog ground reference - must be connected to system ground plane with low-impedance path to minimize noise coupling. |
| 6 | OUT | Open-drain output - requires external pull-up resistor; compatible with 1.0V–6.0V logic families and wired-OR buses. |
| 7 | VCC | Positive supply input - powers internal circuitry; bypass capacitor recommended if supply impedance >1Ω. |
Key Features
| Feature | Design Value |
|---|---|
| 1.0V minimum supply operation | Enables direct interface with single-cell batteries (e.g., 1.2V NiMH or 1.5V alkaline) without LDO pre-regulation. |
| 5μA quiescent current | Reduces average system power by >90% vs. standard comparators, critical for multi-year battery life in IoT sensors. |
| Open-drain output with 6V tolerance | Permits level translation between disparate supply domains (e.g., 1V core logic to 3.3V/5V I/O) without external translators. |
| No phase reversal on overdriven inputs | Guarantees predictable output polarity even when inputs exceed common-mode limits - improves robustness in noisy environments. |
| Internal 2mV hysteresis | Suppresses chatter on slow-moving or noisy input signals without requiring external feedback components. |
Applications
| Battery-Low Detection | Logic-Level Translation |
|---|---|
|
Use Scenario: Monitoring cell voltage in a single-AA powered medical thermometer to trigger shutdown before deep discharge. IC Role / Device Role / Timing Role: Comparator detecting when VBAT falls below 0.9V threshold using resistive divider on IN+ and fixed reference on IN−. Use Value: Ultra-low 5μA ICC preserves battery capacity during standby; 1.0V operation ensures detection occurs before brownout. |
Use Scenario: Converting 1.0V microcontroller GPIO outputs to 3.3V-compatible signals for interfacing with legacy peripherals. IC Role / Device Role / Timing Role: Open-drain translator with pull-up to 3.3V; IN+ driven by 1.0V logic, OUT pulled high to 3.3V when inactive. Use Value: Eliminates need for dedicated level-shifter ICs; <4μs delay preserves timing integrity in control signaling. |
| Sensor Wake-Up Circuit | Portable Gas Detector Threshold Alert |
|
Use Scenario: Waking a low-power MCU from sleep when a photodiode current exceeds ambient light threshold. IC Role / Device Role / Timing Role: High-sensitivity comparator comparing transimpedance-amplified sensor output against adjustable reference on IN−. Use Value: Rail-to-rail input allows direct sensing of sub-100mV signals; 5μA ICC minimizes quiescent drain during sleep mode. |
Use Scenario: Triggering audible alarm when electrochemical gas sensor output crosses hazardous concentration threshold. IC Role / Device Role / Timing Role: Precision threshold detector with ±10mV max VOS, configured with hysteresis to prevent false alarms from sensor noise. Use Value: Internal 2mV hysteresis plus low offset ensures repeatable, chatter-free alarm activation in battery-constrained handheld units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDBVR | Push-pull output, 320nA ICC, 1.8V–5.5V supply - lower current but higher VMIN. | Not suitable for ≤1.2V battery systems; lacks open-drain flexibility for mixed-voltage buses. | Select when ultra-low power dominates over 1.0V operation and level translation is unnecessary. |
| MAX9060ASA+T | Open-drain, 1.6V–5.5V supply, 1.5μA ICC, 12μs tPD - lower current but slower and higher VMIN. | Cannot operate from 1.0V–1.5V cells; insufficient speed for fast wake-up or pulse-edge detection. | Select only for ultra-long-life applications where supply >1.6V is guaranteed and speed <10μs is acceptable. |
Compared with TLV3691IDBVR and MAX9060ASA+T, the MAX9101ESA+T uniquely supports true 1.0V operation with open-drain output and sub-4μs delay - making it the only viable choice for high-speed, single-cell, mixed-voltage threshold detection in space-constrained portable designs.
Availability
MAX9101ESA+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable communication devices, and closed-loop sensor monitoring requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for MAX9101ESA+T 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX9100/MAX9101 family was designed specifically for micropower, ultra-low-voltage comparator applications in single-cell battery systems - prioritizing 1.0V operation, nanoscale quiescent current, and robust rail-to-rail input performance.
FAQ
What is the minimum supply voltage supported by the MAX9101ESA+T?
The MAX9101ESA+T is fully specified to operate down to +1.0V supply voltage - verified across −40°C to +85°C temperature range. At 1.0V, propagation delay is 3.3μs (typical, 50mV overdrive), input common-mode range extends from 0V to 0.8V, and quiescent current remains at 5.0μA (typical). This enables direct use with primary alkaline, zinc-carbon, or single NiMH cells without voltage regulation.
Does the MAX9101ESA+T have internal hysteresis, and can it be adjusted?
Yes, the MAX9101ESA+T includes 2mV typical internal hysteresis to improve noise immunity on slow-moving inputs. This value is fixed and not user-adjustable. External hysteresis can be added via positive feedback resistors - the datasheet provides exact formulas and design examples (e.g., Figure 2) to calculate R1/R2 values for custom hysteresis bands while preserving trip-point accuracy for the MAX9101ESA+T.
Can the MAX9101ESA+T output drive a 5V logic input when powered from 1.0V?
Yes - the MAX9101ESA+T open-drain output is rated for up to +6.0V above ground, independent of VCC. When powered from 1.0V, its OUT pin can be pulled up to 3.3V or 5V using an external resistor, enabling direct interface with higher-voltage logic families. The output leakage current is ≤0.2μA at +5.5V, ensuring clean high-state definition in mixed-voltage systems using the MAX9101ESA+T.
What is the input common-mode voltage range for the MAX9101ESA+T at 1.0V supply?
At VCC = +1.0V, the MAX9101ESA+T input common-mode voltage range is specified from 0V to 0.8V (VCC − 0.2V). Full rail-to-rail input operation (0V to VCC) is possible with minor degradation: input bias current rises to ~800nA and supply current increases to ~7μA, but functionality remains intact. This extended range allows direct sensing of ground-referenced signals or near-VCC thresholds in ultra-low-voltage designs using the MAX9101ESA+T.
Is the MAX9101ESA+T pin-compatible with the MAX9100ESA+T?
No - the MAX9101ESA+T and MAX9100ESA+T share identical pinouts in the SOT23-5 package (e.g., MAX9101EUK+T), but their SO-8 variants (MAX9101ESA and MAX9100ESA) differ in output stage configuration only, not pin mapping. Both use the same SO-8 pin assignment: Pin 2 = IN−, Pin 3 = IN+, Pin 4 = GND, Pin 6 = OUT, Pin 7 = VCC, and Pins 1/5/8 = N.C. However, substituting MAX9101ESA+T for MAX9100ESA+T requires verifying external pull-up presence and logic-level compatibility due to output architecture differences.
MAX9101ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1V ~ 5.5V
- :
- 10mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.015µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 13µA
- Current - Quiescent (Max):
- 68dB CMRR, 66dB PSRR
- CMRR, PSRR (Typ):
- 4.5µs
- Propagation Delay (Max):
- ±2mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX9101ESA+T FAQ
1.How can I place an order for MAX9101ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9101ESA+T 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 MAX9101ESA+T reliable?
The price and inventory of MAX9101ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9101ESA+T is usually 5 days.
3.What payment methods are accepted for MAX9101ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9101ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9101ESA+T?
MAX9101ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9101ESA+T 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 MAX9101ESA+T?
For technical support, including MAX9101ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9101ESA+T requirements.
6.How does Aetrix verify that MAX9101ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX9101ESA+T 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 MAX9101ESA+T meets industry standards.
7.What is the process for return or replacement of MAX9101ESA+T?
All MAX9101ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9101ESA+T, 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 MAX9101ESA+T part is unused and in its original packaging.
Return procedure for MAX9101ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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