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Silicon Labs TSM982ESA+
- Part No.:
- TSM982ESA+
- Manufacturer:
- Silicon Labs
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSM982ESA+.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,792
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Product details
Overview
TSM982ESA+ from Silicon Labs is a dual-channel, micropower analog comparator with integrated 1.182V ±2% reference and adjustable hysteresis via HYST pin. It operates from single +2.5V to +11V or dual ±1.25V to ±5.5V supplies, draws ≤6μA max over temperature, features open-drain outputs for wired-OR logic, and targets battery-powered threshold detection and window comparator circuits.
For engineers reviewing the TSM982ESA+ datasheet, TSM982ESA+ pinout, TSM982ESA+ application, or TSM982ESA+ equivalent, key selection criteria include ultra-low quiescent current (≤6μA), internal reference accuracy (±2% over –40°C to +85°C), hysteresis programmability, input common-mode range extending to V–, and compatibility with TTL/CMOS logic levels in single-supply configurations.
Technical Context
The TSM982ESA+ implements two independent rail-to-rail input comparators with open-drain outputs sinking to V–, enabling direct wired-OR connection and level translation. Its internal 1.182V reference is referenced to V– and supports ±2% accuracy across –40°C to +85°C, with source/sink capability up to 25μA/15μA.
Hysteresis is implemented via the dedicated HYST pin, accepting voltages from REF down to REF – 50mV; external resistors between REF and HYST allow precise hysteresis band control (e.g., 50mV max). Input offset voltage is ±10mV, and propagation delay is 12μs at 10mV overdrive with 100pF load and 1MΩ pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V (single) or ±1.25V to ±5.5V (dual); enables operation in 3V/5V systems and legacy ±5V designs |
| Max Supply Current | 6μA over –40°C to +85°C; ensures multi-year battery life in always-on sensing nodes |
| Reference Voltage | 1.182V ±2% over –40°C to +85°C; provides stable trip-point generation without external reference IC |
| Propagation Delay | 12μs at 10mV overdrive; supports fast response in undervoltage/overvoltage monitoring |
| Input Common-Mode Range | V– to V+ – 1.3V; allows direct sensing of signals near ground or negative rails |
| Output Type | Open-drain, sinks to V–; enables flexible logic-level translation and wired-OR bus architectures |
| Hysteresis Control | Dedicated HYST pin with REF–50mV to REF range; permits externally adjustable hysteresis without feedback resistors on comparator inputs |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), JEDEC MS-012 compliant, body size 4.80–5.00 mm × 3.73–3.89 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference; tied to V– for single-supply operation; required for output low-level definition |
| 2 | V– | Negative supply; accepts 0V (GND) or negative voltage; sets reference for REF and output sink node |
| 3 | IN+ | Comparator A noninverting input; rail-to-rail capable, supports common-mode down to V– |
| 4 | IN– | Comparator A inverting input; same rail-to-rail range as IN+ |
| 5 | HYST | Hysteresis control input; voltage between REF and REF–50mV sets hysteresis band magnitude |
| 6 | REF | 1.182V reference output referenced to V–; sources/sinks up to 25μA/15μA |
| 7 | V+ | Positive supply; supports up to +11V; defines upper rail for input and output swing |
| 8 | OUT | Comparator B open-drain output; sinks current to V–; requires external pull-up for logic HIGH |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ≤6μA max over full –40°C to +85°C range; extends battery life in portable and remote sensors |
| Integrated precision reference | 1.182V ±2% over temperature; eliminates need for external reference and reduces BOM count |
| Adjustable hysteresis | Programmable via HYST pin using two resistors; prevents oscillation near threshold without modifying comparator input network |
| Rail-to-rail input stage | Common-mode range from V– to V+ – 1.3V; enables direct interface with low-voltage microcontrollers and sensors |
| Open-drain outputs | Sink to V–; supports wired-OR logic, level shifting between disparate supply domains, and I²C-compatible bus structures |
Applications
| Threshold Detector | Window Comparator |
|---|---|
Use Scenario: Monitoring lithium-ion battery voltage to trigger undervoltage lockout at 3.0V and overvoltage protection at 4.3V. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against two independently set thresholds using resistor dividers and internal REF. Use Value: Eliminates external reference and hysteresis components; 6μA supply current enables continuous monitoring during sleep mode. | Use Scenario: Validating 5V power rail integrity in industrial PLC modules by detecting deviations outside 4.75V–5.25V window. IC Role / Device Role / Timing Role: TSM982ESA+ implements high- and low-threshold comparators with shared REF and discrete HYST pins for independent hysteresis tuning. Use Value: Open-drain outputs allow wired-OR of both comparator outputs to generate single "power-good" signal without additional logic gates. |
| Battery Switchover | Level Translator |
Use Scenario: Seamless transition from USB-powered operation to coin-cell backup in medical wearables when main supply drops below 3.3V. IC Role / Device Role / Timing Role: One comparator monitors main supply vs REF; output drives gate of P-MOSFET to enable backup path. Use Value: Low 12μs propagation delay ensures rapid switchover; 6μA current minimizes drain on backup cell during standby. | Use Scenario: Converting ±5V analog sensor outputs to 3.3V logic-compatible signals for MCU ADC input protection. IC Role / Device Role / Timing Role: Comparator acts as zero-crossing detector with REF biased to mid-rail; open-drain output pulled to 3.3V. Use Value: Input common-mode range includes V– allows direct connection to bipolar signals; no level-shifting resistors needed on input side. |
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 |
|---|---|---|---|
| MAX982ESA+ | Pin- and function-compatible alternate source; identical electrical specs and pinout per Silicon Labs documentation | No functional difference; drop-in replacement for legacy MAX design-in or second-source requirements | Select when sourcing from distributors listing MAX982ESA+ or requiring Maxim Integrated branding |
| TSM973ESA+ | Same package and pinout; internal reference accuracy ±1% (vs ±2%); higher quiescent current (6μA max same, but tighter spec bin) | Better reference stability for precision thresholding; not suitable where ±2% tolerance is intentionally used for wider hysteresis margins | Select when reference accuracy is critical and ±1% tolerance is required over full temperature range |
Compared with MAX982ESA+, TSM982ESA+ offers identical functionality with Silicon Labs' manufacturing and support; versus TSM973ESA+, it trades ±1% reference accuracy for cost-sensitive applications where ±2% is sufficient and hysteresis margin is prioritized.
Availability
TSM982ESA+ is available at Aetrix Electronics and suitable for battery-powered systems, industrial sensor nodes, and portable medical devices requiring stable component supply with guaranteed long-term availability.
Supply support for TSM982ESA+ 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 Labs is a fabless semiconductor company specializing in low-power, mixed-signal ICs for timing, IoT, and embedded control applications.
The TSM982ESA+ belongs to Silicon Labs' TSM9xx micropower comparator family, designed specifically for energy-constrained systems needing precision threshold detection without external references or complex support circuitry.
FAQ
What is the operating temperature range for the TSM982ESA+?
The TSM982ESA+ is rated for operation from –40°C to +85°C. This extended industrial temperature range is confirmed in the ordering information table (Page 4) and electrical characteristics (Pages 5–6), where all min/typ/max values are specified across this interval. The "E" suffix in TSM982ESA+ explicitly denotes the –40°C to +85°C grade.
Does the TSM982ESA+ require external pull-up resistors on its outputs?
Yes, the TSM982ESA+ requires external pull-up resistors on both OUT pins because its outputs are open-drain and can only sink current to V–. Without a pull-up, the output remains floating in the HIGH state. Typical values range from 10kΩ to 1MΩ depending on speed and drive strength requirements, as shown in the response time test conditions (Page 5).
Can the internal reference of the TSM982ESA+ be used to bias external circuitry?
Yes, the REF pin of the TSM982ESA+ can source up to 25μA and sink up to 15μA while maintaining ±2% accuracy over temperature. It is intended for driving high-impedance divider networks (e.g., for threshold setting) and must not be bypassed with capacitors, as stated in the Theory of Operation section (Page 12).
How is hysteresis configured on the TSM982ESA+?
Hysteresis on the TSM982ESA+ is configured using the HYST pin: connect a resistor from REF to HYST and another from HYST to V–. The voltage difference between REF and HYST determines hysteresis magnitude, with REF–50mV yielding maximum 50mV hysteresis band. No feedback to comparator inputs is required, per Applications Information (Page 13).
Is the TSM982ESA+ pin-compatible with the MAX982?
Yes, the TSM982ESA+ is electrically and form-factor identical to the MAX982, as explicitly stated in the DESCRIPTION section (Page 1): "The TSM971/972/973/982/984 family [...] is electrically and form-factor identical to the MAX971/972/973/982/984 family." Both use the same 8-pin SOIC package and pin functions.
TSM982ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- TSM98x
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 2.5V
- Voltage - Input Offset (Max):
- 0.005µA @ 2.5V
- Current - Input Bias (Max):
- 40mA
- Current - Output (Typ):
- 6µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TSM982ESA+ FAQ
1.How can I place an order for TSM982ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM982ESA+ 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 TSM982ESA+ reliable?
The price and inventory of TSM982ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM982ESA+ is usually 5 days.
3.What payment methods are accepted for TSM982ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM982ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM982ESA+?
TSM982ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM982ESA+ 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 TSM982ESA+?
For technical support, including TSM982ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM982ESA+ requirements.
6.How does Aetrix verify that TSM982ESA+ is sourced from the original manufacturer or authorized distributors?
All TSM982ESA+ 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 TSM982ESA+ meets industry standards.
7.What is the process for return or replacement of TSM982ESA+?
All TSM982ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with TSM982ESA+, 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 TSM982ESA+ part is unused and in its original packaging.
Return procedure for TSM982ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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