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Analog Devices Inc./Maxim Integrated MAX9117ESA+T
- Part No.:
- MAX9117ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9117ESA+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,400
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Product details
Overview
MAX9117ESA+T from Analog Devices is a nanopower comparator with integrated 1.252V ±1.75% reference, push-pull output, 600nA supply current at 1.6V, and Beyond-the-Rails™ input range extending 200mV beyond VEE/VCC - designed for ultra-low-power 2-cell battery monitoring in portable medical instruments and telemetry systems.
For engineers reviewing the MAX9117ESA+T datasheet, MAX9117ESA+T pinout, MAX9117ESA+T application, or MAX9117ESA+T equivalent, key selection criteria include guaranteed operation down to +1.6V, rail-to-rail output swing with ±5mA drive, internal hysteresis (4mV), crowbar-current-free switching, and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX9117ESA+T employs a PNP emitter-follower reference stage biased by a 120nA current source, delivering stable 1.252V output with 100ppm/°C TC over –40°C to +85°C. Its break-before-make push-pull output stage eliminates supply-current surges during transitions, reducing dynamic power consumption and minimizing need for supply filtering.
Input common-mode range spans VEE – 0.2V to VCC + 0.2V, enabling ground- or supply-line sensing without level-shifting. Internal hysteresis ensures clean switching on slow-moving signals, while input bias current remains ≤2nA across temperature, supporting high-impedance sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +5.5V - enables direct operation from single Li-ion or dual alkaline cells without regulation. |
| Supply Current | 600nA at +1.6V - extends battery life in always-on monitoring applications beyond 2.5 million hours per AA cell. |
| Reference Voltage | 1.252V ±1.75% - provides precision threshold generation without external components or calibration. |
| Input Offset Voltage | 1mV typical, 10mV max - ensures accurate voltage discrimination in low-signal-level battery end-of-life detection. |
| Propagation Delay | 14µs (high-to-low) at +5V - supports response to fast transients in overvoltage/undervoltage fault detection. |
| Output Drive | ±5mA rail-to-rail - directly drives LEDs, logic inputs, or small MOSFET gates without external buffers. |
| Hysteresis | 4mV internal - prevents chatter on noisy battery voltage rails without requiring external feedback resistors. |
Pinout & Package
The MAX9117ESA+T is housed in an 8-pin SO (S8-2) package, measuring 4.9mm × 3.9mm × 1.75mm, RoHS-compliant and lead-free (+ suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | N.C. | No internal connection - must be left unconnected; no routing or grounding required. |
| 2 | IN+ | Noninverting input - accepts signals up to VCC + 0.2V for Beyond-the-Rails™ sensing at supply line. |
| 3 | IN− | Inverting input - used with REF (Pin 4) or external reference for precise threshold comparison. |
| 4 | REF | Internal 1.252V reference output - bypassable with low-leakage capacitor; drives high-impedance loads only. |
| 6 | OUT | CMOS push-pull output - sources/sinks up to ±5mA; compatible with 1.6V–5.5V logic families. |
| 7 | VCC | Positive supply - supplies both comparator core and reference; decoupling recommended near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Beyond-the-Rails™ inputs | Enables direct sensing of battery voltage at ground or supply rail without level shifters or resistive dividers. |
| Crowbar-current-free switching | Eliminates supply glitches during output transitions, reducing need for bulk bypass capacitors in compact designs. |
| Internal 1.252V ±1.75% reference | Removes external reference IC or resistor divider, saving board space and improving long-term accuracy stability. |
| 4mV internal hysteresis | Prevents oscillation on slow or noisy inputs (e.g., thermistor or battery voltage ramps), eliminating external hysteresis resistors. |
| –40°C to +85°C operation | Validated performance across industrial and portable medical operating environments without derating. |
Applications
| 2-Cell Battery Monitoring | Ultra-Low-Power Telemetry |
|---|---|
Use Scenario: Real-time voltage tracking of dual alkaline or NiMH cells in remote environmental sensors. IC Role / Device Role / Timing Role: Comparator compares cell voltage against internal 1.252V reference to trigger low-battery alert when either cell drops below 0.9V. Use Value: 600nA quiescent current enables >5-year battery life on 2000mAh AA cells, verified per Table 1 in datasheet. | Use Scenario: Wake-up trigger for intermittent data transmission in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Detects threshold-crossing events (e.g., temperature or humidity thresholds) to activate microcontroller from deep sleep. Use Value: Push-pull output directly drives MCU interrupt pin; crowbar-current-free design avoids false wake-ups from supply noise. |
| Medical Instrument Threshold Detection | Portable PDA Power Management |
Use Scenario: Overvoltage protection circuit in handheld glucose meters using single Li-ion battery. IC Role / Device Role / Timing Role: Monitors battery voltage against 1.252V reference scaled via resistor network to detect >4.3V overcharge condition. Use Value: Input range extending to VCC + 0.2V allows direct connection to battery rail without attenuation, preserving accuracy. | Use Scenario: Supply rail sequencing and undervoltage lockout in legacy PDAs with dual-voltage logic domains. IC Role / Device Role / Timing Role: Generates reset signal when main 3.3V rail falls below 2.9V, using REF pin as stable reference. Use Value: Integrated reference eliminates drift errors from resistor-divider temperature coefficients, improving reset threshold stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9117EXK+T | Same electrical specs, but in 5-pin SC70 package (X5-1); smaller footprint (2.0mm × 1.25mm vs. 4.9mm × 3.9mm). | Preferred for ultra-dense portable designs where board area is constrained; requires different land pattern and reflow profile. | Select MAX9117EXK+T when minimizing PCB area is critical and SC70 assembly capability exists. |
| TLV3691IDBVR | 320nA supply current, no internal reference, open-drain output, 1.8V–5.5V operation - lower power but lacks reference and push-pull drive. | Suitable for pull-up–based logic translation or multi-supply systems; not drop-in for REF-based threshold detection. | Choose TLV3691IDBVR only if reference-free operation and open-drain flexibility outweigh loss of integrated 1.252V reference. |
Compared with MAX9117EXK+T, the MAX9117ESA+T offers identical functionality in a larger SO package for easier hand-soldering and thermal management; versus TLV3691IDBVR, it trades 280nA lower current for essential features - integrated reference, push-pull output, and sub-1.8V operation - critical for 2-cell battery systems.
Availability
MAX9117ESA+T is available at Aetrix Electronics and suitable for 2-cell battery monitoring, ultra-low-power telemetry, and portable medical instrument applications requiring stable component supply across extended product lifecycles.
Supply support for MAX9117ESA+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 technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX9117ESA+T belongs to the MAX9117–MAX9120 nanopower comparator family, engineered specifically for energy-constrained battery-powered systems requiring precision threshold detection with minimal quiescent power.
FAQ
What is the operating voltage range of the MAX9117ESA+T?
The MAX9117ESA+T operates from +1.6V to +5.5V supply voltage, with full specification guaranteed down to +1.6V - enabling direct interface with two alkaline, NiMH, or lithium primary cells without regulation. This range is validated across –40°C to +85°C ambient temperature, making the MAX9117ESA+T suitable for battery-powered portable equipment where low-voltage operation is essential.
Does the MAX9117ESA+T include an internal voltage reference?
Yes, the MAX9117ESA+T integrates a precision 1.252V ±1.75% voltage reference referenced to VEE, with 100ppm/°C temperature coefficient over –40°C to +85°C. The reference is accessible at Pin 4 (REF) and is optimized for high-impedance loads; it can be bypassed with a low-leakage capacitor to improve noise performance. This eliminates the need for external reference ICs or resistor dividers in threshold-detection circuits.
What output configuration does the MAX9117ESA+T use?
The MAX9117ESA+T features a CMOS push-pull output stage capable of sourcing and sinking up to ±5mA while maintaining rail-to-rail swing. Unlike open-drain comparators, it does not require an external pullup resistor, simplifying design and ensuring deterministic logic levels for direct interfacing with microcontrollers or logic gates. This output architecture also contributes to crowbar-current-free switching, minimizing supply disturbances.
Can the MAX9117ESA+T sense voltages beyond its supply rails?
Yes, the MAX9117ESA+T supports Beyond-the-Rails™ inputs with a common-mode range extending from VEE – 0.2V to VCC + 0.2V. This allows direct sensing of signals at ground (VEE) or supply rail (VCC) without level-shifting circuitry - critical for battery voltage monitoring where the input may equal or slightly exceed VCC during charge termination or cold-temperature conditions.
Is the MAX9117ESA+T pin-compatible with other devices in the MAX9117–MAX9120 family?
No - the MAX9117ESA+T uses an 8-pin SO (S8-2) package with N.C. pins at positions 1, 5, and 8, whereas the SC70 variants (e.g., MAX9117EXK+T) use a 5-pin SC70-5 package with different pinout and terminal count. While functionally identical, they are not mechanically or electrically pin-compatible; PCB layout and footprint must be redesigned when substituting between SO and SC70 packages.
MAX9117ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.65V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.001µA @ 5V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 1.6µA
- Current - Quiescent (Max):
- 80dB PSRR
- CMRR, PSRR (Typ):
- 40µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX9117ESA+T FAQ
1.How can I place an order for MAX9117ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9117ESA+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 MAX9117ESA+T reliable?
The price and inventory of MAX9117ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9117ESA+T is usually 5 days.
3.What payment methods are accepted for MAX9117ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9117ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9117ESA+T?
MAX9117ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9117ESA+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 MAX9117ESA+T?
For technical support, including MAX9117ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9117ESA+T requirements.
6.How does Aetrix verify that MAX9117ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX9117ESA+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 MAX9117ESA+T meets industry standards.
7.What is the process for return or replacement of MAX9117ESA+T?
All MAX9117ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9117ESA+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 MAX9117ESA+T part is unused and in its original packaging.
Return procedure for MAX9117ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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