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Silicon Labs TSM9117EXK+
- Part No.:
- TSM9117EXK+
- Manufacturer:
- Silicon Labs
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TSM9117EXK+.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF SC70
- Quantity:
- Payment:
- Shipping:
Inventory:4,516
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Product details
Overview
TSM9117EXK+ from Silicon Laboratories is a nanopower rail-to-rail input comparator with integrated 1.252V ±1.75% reference, push-pull output, and guaranteed operation down to +1.6V supply. It draws only 600nA supply current, supports input voltages extending 200mV beyond rails, and delivers clean switching via 4mV internal hysteresis-ideal for 2-cell battery monitoring in portable medical instruments.
For engineers reviewing the TSM9117EXK+ datasheet, TSM9117EXK+ pinout, TSM9117EXK+ application, or TSM9117EXK+ equivalent, key selection criteria include ultra-low quiescent current, internal reference accuracy, rail-to-rail input range, push-pull drive capability (±5mA), and SC70-5 package compatibility for space-constrained battery-powered systems.
Technical Context
The TSM9117EXK+ implements a robust CMOS input stage tolerant of VIN = VEE − 0.2V to VCC + 0.2V and features an on-chip 1.252V reference with 100ppm/°C tempco and 1.1mVRMS noise (10Hz–100kHz). Its push-pull output drives ±5mA loads with rail-to-rail swing, achieving VOL ≤ 400mV and VCC−VOH ≤ 400mV at 5V/5mA.
Internal 4mV hysteresis eliminates oscillation near zero-crossing without external components. Propagation delay is 15µs (low-to-high) and 16µs (high-to-low) at VCC = 1.6V, with power-up time of 1.2ms-enabling reliable threshold detection in ultra-low-power telemetry and remote sensing nodes.
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 +25°C - extends battery life to >2.5 million hours in 2-cell alkaline applications (2000mAh). |
| Input Offset Voltage | 1–5mV (typ) - ensures accurate threshold detection with minimal calibration overhead. |
| Reference Voltage | 1.252V ±1.75% - provides stable, factory-trimmed reference for precision voltage monitoring. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows sensing at ground or supply rail without level-shifting circuitry. |
| Propagation Delay | 15µs (tPD+) / 16µs (tPD−) at 1.6V - supports fast response in low-voltage wake-up and fault-detection circuits. |
| Hysteresis | 4mV (internal) - prevents chatter during slow-moving or noisy input signals without external feedback. |
Pinout & Package
Package: 5-pin SC70 (3.0mm × 1.7mm × 0.9mm, 0.65mm pitch), lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Comparator output | Push-pull driver capable of sourcing/sinking ±5mA; rail-to-rail swing minimizes need for external level translation. |
| 2 (VEE) | Negative supply | Ground reference pin; supports single-supply operation when tied to system GND. |
| 3 (IN+) | Noninverting input | Differential input accepting signals up to 200mV beyond supply rails-enables direct battery terminal sensing. |
| 4 (REF) | Reference output & inverting input | Provides 1.252V reference and serves as comparator inverting input; bypassable with 1nF for reduced noise. |
| 5 (VCC) | Positive supply | Accepts 1.6V–5.5V; low dropout enables use with aging batteries down to 1.8V per cell. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Input overdrive beyond rails does not invert output polarity-critical for unregulated battery voltage monitoring. |
| Crowbar-current-free switching | Output stage avoids shoot-through current during transitions-reduces supply ripple and eliminates need for large bypass caps. |
| Robust ESD-protected inputs | Internal diodes clamp transients to rails; supports ±20mA input fault current without damage. |
| Ultra-low temperature drift | 100ppm/°C reference tempco ensures <±10mV error across −40°C to +85°C-suitable for industrial-grade battery management. |
| Guaranteed 1.6V operation | Specified performance at minimum supply-validates functionality even with deeply discharged 2-cell alkaline packs. |
Applications
| 2-Cell Battery Monitoring | Medical Instrument Threshold Detection |
|---|---|
Use Scenario: Monitoring voltage of two-series alkaline or NiMH cells in portable glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Comparator compares battery voltage against internal 1.252V reference to trigger low-battery alert before critical shutdown. Use Value: 600nA supply current extends device runtime by >2.5× versus µA-range comparators; rail-to-rail input eliminates external resistive dividers. | Use Scenario: Detecting sensor signal thresholds in battery-powered ECG front-ends or infusion pump pressure alarms. IC Role / Device Role / Timing Role: Precision threshold discriminator using internal reference to identify out-of-range physiological signals. Use Value: 4mV hysteresis suppresses noise-induced false triggers; 1.6V operation ensures reliability during brownout conditions. |
| Ultra-Low-Power Telemetry Node | Ground-Referenced Sensing |
Use Scenario: Wake-up comparator in LoRaWAN soil moisture sensor node powered by 2xAA batteries. IC Role / Device Role / Timing Role: Low-power wake-up circuit that activates MCU only when moisture level crosses preset threshold. Use Value: Sub-µA quiescent current preserves multi-year battery life; 15µs propagation delay enables rapid response to environmental events. | Use Scenario: Direct sensing of current shunt voltage or thermistor output referenced to system ground in wearable health monitors. IC Role / Device Role / Timing Role: Ground-sensing comparator eliminating need for high-side current sense amplifiers or level shifters. Use Value: Input range extending 200mV below ground allows accurate measurement of negative-going shunt signals without bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9117ASA+ | Second-source pin-compatible variant; identical electrical specs but different marking and tape/reel packaging. | No functional difference; same 5-pin SC70, 1.252V reference, 600nA ICC, and push-pull output. | Select MAX9117ASA+ when cross-manufacturer supply chain diversification is required without layout or firmware changes. |
| TSM9117ESA+ | Same die, 8-pin SOIC package instead of SC70-5; higher thermal mass and larger footprint. | Suitable for prototyping or legacy PCBs where SC70 rework is impractical; dissipation rating 471mW vs 200mW. | Choose TSM9117ESA+ for hand-soldered evaluation or industrial designs prioritizing thermal margin over board area. |
Compared with MAX9117ASA+, TSM9117EXK+ offers identical performance in a smaller SC70-5 package optimized for volume portable electronics; versus TSM9117ESA+, it reduces PCB area by 65% and improves thermal response but requires fine-pitch assembly capability.
Availability
TSM9117EXK+ is available at Aetrix Electronics and suitable for 2-cell battery monitoring, portable medical instrumentation, and ultra-low-power telemetry requiring stable component supply and long-term lifecycle support.
Supply support for TSM9117EXK+ 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
Silicon Laboratories is a fabless semiconductor company specializing in low-power, mixed-signal ICs for timing, IoT, and embedded control applications.
The TSM9117EXK+ belongs to Silicon Labs' nanopower comparator family designed specifically for energy-constrained battery management and precision threshold detection in portable and medical electronics.
FAQ
What is the operating supply voltage range for the TSM9117EXK+?
The TSM9117EXK+ operates from 1.6V to 5.5V across the full −40°C to +85°C temperature range. At +25°C, it functions down to 1.6V; over temperature, minimum supply is 1.8V. This enables direct interfacing with aging 2-cell alkaline (1.8V min) or single Li-ion (2.7–4.2V) batteries without regulation-critical for maximizing usable battery capacity in the TSM9117EXK+ design.
Does the TSM9117EXK+ require external hysteresis components?
No, the TSM9117EXK+ integrates 4mV of internal hysteresis to prevent oscillation during slow or noisy input transitions-eliminating the need for external positive-feedback resistors in most threshold-detection applications. External hysteresis can be added using three resistors if wider bands (e.g., 100mV) are required, but the TSM9117EXK+ delivers stable switching out-of-the-box for standard battery-monitoring use cases.
What is the function of the REF pin on the TSM9117EXK+?
The REF pin on the TSM9117EXK+ serves a dual role: it outputs the internal 1.252V ±1.75% voltage reference and functions as the comparator's inverting input. This integrated architecture simplifies 2-cell battery monitoring circuits by enabling direct comparison of battery voltage (at IN+) against the stable on-chip reference-no external reference IC or resistor divider is needed for basic low-battery detection in the TSM9117EXK+ implementation.
Can the TSM9117EXK+ interface with signals below ground potential?
Yes, the TSM9117EXK+ accepts input voltages as low as VEE − 0.2V, supporting signals 200mV below ground when VEE = 0V. This enables direct sensing of negative-going shunt voltages or thermistor outputs referenced to system ground-eliminating level-shifters or bias networks. The TSM9117EXK+ maintains specified offset and hysteresis performance across this extended common-mode range.
What package type and dimensions does the TSM9117EXK+ use?
The TSM9117EXK+ uses a 5-pin SC70 package measuring 3.0mm × 1.7mm × 0.9mm with 0.65mm lead pitch. It is lead-free and RoHS-compliant. This compact footprint reduces PCB area by 65% versus the 8-pin SOIC variant (TSM9117ESA+), making the TSM9117EXK+ ideal for space-constrained portable electronics where miniaturization and high-volume automated assembly are priorities.
TSM9117EXK+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- TSM91x
- Packaging:
- Strip
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 1
- Output Type:
- Push-Pull
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 5.5V
- :
- 5mV
- Voltage - Input Offset (Max):
- 0.001µA
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 1.3µA
- Current - Quiescent (Max):
- 80dB PSRR
- CMRR, PSRR (Typ):
- 40µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
TSM9117EXK+ FAQ
1.How can I place an order for TSM9117EXK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM9117EXK+ 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 TSM9117EXK+ reliable?
The price and inventory of TSM9117EXK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM9117EXK+ is usually 5 days.
3.What payment methods are accepted for TSM9117EXK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM9117EXK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM9117EXK+?
TSM9117EXK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM9117EXK+ 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 TSM9117EXK+?
For technical support, including TSM9117EXK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM9117EXK+ requirements.
6.How does Aetrix verify that TSM9117EXK+ is sourced from the original manufacturer or authorized distributors?
All TSM9117EXK+ 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 TSM9117EXK+ meets industry standards.
7.What is the process for return or replacement of TSM9117EXK+?
All TSM9117EXK+ units undergo pre-shipment inspection (PSI). If there is an issue with TSM9117EXK+, 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 TSM9117EXK+ part is unused and in its original packaging.
Return procedure for TSM9117EXK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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