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Silicon Labs TSM9119EXK+
- Part No.:
- TSM9119EXK+
- Manufacturer:
- Silicon Labs
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TSM9119EXK+.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,903
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Product details
Overview
TSM9119EXK+ from Silicon Laboratories is a nanopower, rail-to-rail input comparator without internal reference, housed in a 5-pin SC70 package. It operates down to +1.6V supply voltage, draws only 350nA supply current at 1.6V, features 4mV internal hysteresis and ±200mV beyond-the-rails input voltage range, and delivers push-pull output capable of ±5mA drive - ideal for ultra-low-power battery monitoring in 2-cell systems.
For engineers reviewing the TSM9119EXK+ datasheet, TSM9119EXK+ pinout, TSM9119EXK+ application, or TSM9119EXK+ equivalent, key selection considerations include its 350nA supply current at 1.6V, absence of integrated reference, push-pull output architecture, guaranteed operation across –40°C to +85°C, and compatibility with nanopower sensing at ground or supply line.
Technical Context
The TSM9119EXK+ implements a robust CMOS input stage enabling input voltages from VEE – 0.2V to VCC + 0.2V and delivering <1nA input bias current. Its internal hysteresis band is fixed at 4mV (input-referred), eliminating external components for noise-immune threshold detection.
Its push-pull output stage drives rail-to-rail loads up to ±5mA with VOH ≤ 400mV below VCC and VOL ≤ 400mV above VEE at 5V supply, while propagation delays are 15µs (low-to-high) and 16µs (high-to-low) at 1.6V supply - optimized for stable switching in low-voltage, low-frequency monitoring circuits.
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 | 350nA at 1.6V - extends battery life to >5 million hours in always-on 2-cell alkaline applications. |
| Input Offset Voltage | 1–5mV (typical) - ensures accurate threshold detection within ±5mV error at room temperature. |
| Input Common-Mode Range | VEE – 0.2V to VCC + 0.2V - supports sensing at ground or supply rail without level-shifting. |
| Output Type | Push-pull - eliminates need for external pull-up resistor and simplifies interface to digital logic or MCU inputs. |
| Propagation Delay | 15µs (tPD+) / 16µs (tPD–) at 1.6V - provides predictable timing for slow-varying signals like battery voltage decay. |
| Hysteresis | 4mV (input-referred) - prevents chatter near trip points without external feedback components. |
Pinout & Package
Package: 5-pin SC70 (2.0mm × 1.25mm × 0.9mm height), RoHS-compliant, tape-and-reel delivery (3000 pcs/reel).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Push-pull output - actively drives high/low; compatible with CMOS/TTL inputs without pull-up. |
| 2 | VEE | Negative supply terminal - typically connected to GND in single-supply configurations. |
| 3 | IN+ | Noninverting input - accepts signals up to 0.2V beyond VEE or VCC for ground- or rail-referenced sensing. |
| 4 | IN– | Inverting input - used for fixed reference comparison or zero-crossing detection when tied to GND. |
| 5 | VCC | Positive supply terminal - powers device and sets output high-level swing; supports 1.6V–5.5V operation. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdriven inputs | Enables reliable operation even when IN+ or IN– exceed supply rails by 200mV - critical for unregulated battery sensing. |
| Crowbar-current-free switching | Eliminates supply current surges during output transitions - reduces need for large bypass capacitors in space-constrained designs. |
| Rail-to-rail input stage | Supports direct connection to ground (IN–) and battery anode (IN+) in 2-cell monitors without external biasing. |
| Guaranteed 1.6V operation | Permits full functionality down to end-of-life battery voltage (~1.8V per cell), maximizing usable capacity. |
| Internal 4mV hysteresis | Provides built-in noise immunity for clean switching in noisy industrial or mobile environments - no external resistors required. |
Applications
| 2-Cell Battery Monitoring | Medical Instrument Threshold Detection |
|---|---|
Use Scenario: Monitoring voltage decay across two series-connected alkaline cells in portable glucose meters. IC Role / Device Role / Timing Role: Comparator compares battery voltage against fixed threshold to trigger low-battery alert before system shutdown. Use Value: 350nA supply current extends operational life beyond 5 million hours; 1.6V minimum supply ensures alert triggers at true end-of-life (~1.8V/cell). |
Use Scenario: Detecting ECG signal amplitude thresholds in wearable cardiac monitors. IC Role / Device Role / Timing Role: Zero-crossing detector (IN– = GND, IN+ = AC-coupled ECG) generating timing pulses for heart-rate calculation. Use Value: Rail-to-rail input allows direct AC coupling; 4mV hysteresis suppresses noise-induced false triggers without degrading sensitivity. |
| Sensing at Ground Line | Ultra-Low-Power Telemetry Node |
Use Scenario: Measuring current through shunt resistor referenced to system ground in battery-powered IoT sensors. IC Role / Device Role / Timing Role: High-side current sense comparator with IN– tied to shunt low-side and IN+ biased above ground. Use Value: Input range extending 200mV below VEE (GND) enables accurate sub-millivolt differential detection without level shifters. |
Use Scenario: Wake-up trigger in solar-charged environmental sensor nodes operating intermittently for years. IC Role / Device Role / Timing Role: Voltage supervisor comparing supercapacitor voltage to wake threshold, then asserting MCU interrupt via push-pull output. Use Value: Push-pull output directly drives MCU GPIO; 350nA quiescent current minimizes standby drain - critical for multi-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9119ASA+ | Pin-compatible, same 5-pin SC70 package and push-pull output; identical 350nA supply current and 1.6V min supply, but lacks guaranteed –40°C to +85°C temp range specification. | Not qualified for extended industrial temperature operation; unsuitable for medical or automotive ambient environments. | Select MAX9119ASA+ only for commercial-temp consumer applications where cost is prioritized over temperature assurance. |
| TSM9117EXK+ | Same SC70 package and push-pull output, but includes integrated 1.252V ±1.75% reference; draws 600nA instead of 350nA. | Eliminates external reference component but increases supply current by 71%; reference output adds pin (REF) and requires decoupling. | Choose TSM9117EXK+ when reference integration justifies higher current and board area trade-off - e.g., space-constrained single-threshold systems. |
Compared with MAX9119ASA+, TSM9119EXK+ offers guaranteed industrial temperature performance and tighter hysteresis control; compared with TSM9117EXK+, it reduces supply current by 42% and removes reference-related layout complexity - making it optimal for minimal-footprint, ultra-low-quiescent battery monitors.
Availability
TSM9119EXK+ is available at Aetrix Electronics and suitable for 2-cell battery monitoring, medical instrument threshold detection, and ultra-low-power telemetry requiring stable component supply across industrial temperature ranges and long-lifecycle production.
Supply support for TSM9119EXK+ 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, sensing, connectivity, and human interface applications.
The TSM9119EXK+ belongs to Silicon Labs' nanopower comparator family designed specifically for energy-constrained battery management and precision threshold detection in portable and remote systems.
FAQ
What is the minimum supply voltage for reliable operation of the TSM9119EXK+?
The TSM9119EXK+ is guaranteed to operate down to +1.6V across the full –40°C to +85°C temperature range. At 1.6V, it maintains 350nA supply current, 4mV hysteresis, and functional push-pull output swing - enabling use directly from aging alkaline or lithium primary cells without regulation.
Does the TSM9119EXK+ include an internal voltage reference?
No, the TSM9119EXK+ does not include an internal voltage reference. It is the comparator-only variant in the TSM9117–TSM9120 family. Reference functionality is provided only in TSM9117EXK+ and TSM9118EXK+, which integrate a 1.252V ±1.75% reference. The TSM9119EXK+ requires an external reference or ground/supply-rail-based threshold.
What is the purpose of the internal 4mV hysteresis in the TSM9119EXK+?
The internal 4mV hysteresis in the TSM9119EXK+ prevents output oscillation when input signals hover near the trip point due to noise or slow slew rates. It creates distinct high-to-low and low-to-high switching thresholds, ensuring clean, chatter-free transitions - eliminating the need for external positive-feedback resistors in most low-speed monitoring applications.
Can the TSM9119EXK+ be used for zero-crossing detection?
Yes, the TSM9119EXK+ is well-suited for zero-crossing detection. With IN– connected to ground and IN+ receiving an AC-coupled signal, its rail-to-rail input stage (extending 200mV below GND) and 4mV hysteresis provide accurate, noise-immune crossing detection - as validated in Silicon Labs' Application Note Figure 5 for TSM9119-based zero-crossing circuits.
What package type and marking code does the TSM9119EXK+ use?
The TSM9119EXK+ is supplied in a 5-pin SC70 package with tape-and-reel packaging (3000 units per reel). Its top-side marking is "TAC", as specified in the Silicon Labs ordering table on Page 2 of the TSM9117–TSM9120 datasheet revision 1.0.
TSM9119EXK+ 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:
- General Purpose
- 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):
- 800nA
- Current - Quiescent (Max):
- 66.02dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 40µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
TSM9119EXK+ FAQ
1.How can I place an order for TSM9119EXK+ through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM9119EXK+ 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 TSM9119EXK+ reliable?
The price and inventory of TSM9119EXK+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM9119EXK+ is usually 5 days.
3.What payment methods are accepted for TSM9119EXK+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM9119EXK+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM9119EXK+?
TSM9119EXK+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM9119EXK+ 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 TSM9119EXK+?
For technical support, including TSM9119EXK+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM9119EXK+ requirements.
6.How does Aetrix verify that TSM9119EXK+ is sourced from the original manufacturer or authorized distributors?
All TSM9119EXK+ 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 TSM9119EXK+ meets industry standards.
7.What is the process for return or replacement of TSM9119EXK+?
All TSM9119EXK+ units undergo pre-shipment inspection (PSI). If there is an issue with TSM9119EXK+, 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 TSM9119EXK+ part is unused and in its original packaging.
Return procedure for TSM9119EXK+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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