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Texas Instruments TLV1872DGSR
- Part No.:
- TLV1872DGSR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV1872DGSR.pdf
- Description:
- ANALOG COMPARATORS 36V
- Quantity:
- Payment:
- Shipping:
Inventory:2,809
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Product details
Overview
TLV1872DGSR from Texas Instruments is a dual 40V high-speed comparator with independent input and output supply rails, 65ns propagation delay, rail-to-rail inputs, and push-pull outputs. It operates from ±1.35V to ±20V (2.7V–40V total), features Power-On Reset (POR), and draws only 75µA per channel - enabling bipolar zero-cross detection in Class D amplifiers and motor drives.
For engineers reviewing the TLV1872DGSR datasheet, TLV1872DGSR pinout, TLV1872DGSR application, or TLV1872DGSR equivalent, this page delivers verified functional context, validated pin-level design meaning, confirmed thermal and switching specs, and real-world level-translation use cases - all grounded in TI's SNOSDI4A revision December 2024 production data.
Technical Context
The TLV1872DGSR implements a dual-channel architecture with fully isolated input-stage supplies (VCCI/VEEI) and output-stage supplies (VCCO/VEEO), enabling true floating push-pull operation. Its rail-to-rail input stage accepts signals up to 200mV beyond supply rails, while internal POR holds outputs in high-impedance state until both input and output supplies exceed 1.9V.
Propagation delay symmetry (TPD-LH = TPD-HL = 65ns typ. at 100mV overdrive) and matched rise/fall times (5ns typ.) stem from its balanced output driver topology. The device supports asymmetric supply configurations - e.g., VCCI = +15V / VEEI = –15V for bipolar sensing, while VCCO = +3.3V / VEEO = GND drives 3.3V logic - without external level shifters or pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 2.7V to 40V total (±1.35V to ±20V); enables direct interface with ±15V op-amp stages and 3.3V/5V digital logic |
| Propagation Delay | 65ns typical (high-to-low & low-to-high); ensures timing-critical zero-cross detection with <100ns worst-case asymmetry |
| Input Offset Voltage | ±0.3mV typical (±2.5mV max); maintains accuracy in precision threshold detection across –40°C to +125°C |
| Quiescent Current | 75µA per channel (25°C); supports always-on monitoring in battery-backed industrial systems |
| Power-On Reset Threshold | 1.9V on both (VCCI–VEEI) and (VCCO–VEEO); guarantees known Hi-Z output state during power ramp-up/down |
| Output Drive Strength | 30mA sourcing/sinking (–40°C to +125°C); directly drives gate drivers or logic inputs without buffering |
| ESD Rating | ±2000V HBM; meets industrial handling requirements without additional protection circuitry |
Pinout & Package
VSSOP-10 package (3.00mm × 3.00mm body size), thermally enhanced for high-reliability operation in motor control and audio amplifier PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VEEO (Pin 1) | Output negative supply | Sets VOL reference; must be ≥ VEEI and ≤ VEEI + 18V; defines lower rail of output swing |
| OUT1 (Pin 2) | Comparator 1 output | Push-pull output referenced to VCCO/VEEO; no external pull-up required; sinks/sours 30mA |
| IN1– (Pin 3) | Inverting input 1 | Rail-to-rail capable (VEEI – 0.2V to VCCI + 0.2V); differential input voltage up to full supply allowed |
| IN1+ (Pin 4) | Non-inverting input 1 | Matches IN1– in range and bias performance; unused inputs require ≥50mV differential bias |
| VEEI (Pin 5) | Input negative supply | Most negative substrate potential; sets lower rail of input common-mode range; must be ≤ VEEI + 18V vs VEEO |
| IN2+ (Pin 6) | Non-inverting input 2 | Independent second channel input; identical specs to IN1+; supports dual zero-cross or differential sensing |
| IN2– (Pin 7) | Inverting input 2 | Independent second channel input; matches IN1– in ESD clamping and offset drift behavior |
| OUT2 (Pin 8) | Comparator 2 output | Fully independent push-pull output; shares no internal nodes with OUT1; supports asynchronous event detection |
| VCCI (Pin 9) | Input positive supply | Sets VCM upper limit and powers input stage; must be ≥ VCCO and ≥ VEEI + 2.7V |
| VCCO (Pin 10) | Output positive supply | Sets VOH reference; must be ≤ VCCI and ≥ VEEO + 2.7V; enables level-shifted logic-compatible outputs |
Key Features
| Feature | Design Value |
|---|---|
| Floating push-pull output | Eliminates need for external pull-up resistors and enables symmetric rise/fall edges (5ns typ.) into 15pF loads |
| Separate input/output supplies | Allows bipolar input sensing (±15V) while generating single-supply logic outputs (3.3V), decoupling analog and digital domains |
| Rail-to-rail input stage | Accepts signals from VEEI – 0.2V to VCCI + 0.2V, maximizing dynamic range in high-voltage feedback loops |
| Power-On Reset (POR) | Holds both outputs in high-impedance state for ≤80µs until both (VCCI–VEEI) and (VCCO–VEEO) exceed 1.9V |
| Low quiescent current | 75µA per channel at 25°C enables always-on zero-cross detection in energy-sensitive motor control systems |
| High ESD robustness | ±2000V HBM rating reduces field failure risk in automated assembly and harsh industrial environments |
Applications
| Class D Amplifier Zero-Cross Detection | Motor Phase Current Sensing |
|---|---|
Use Scenario: Detecting precise zero-crossing points of high-frequency PWM waveforms in audio output stages to minimize switching distortion. IC Role / Device Role / Timing Role: Dual comparator monitors complementary half-bridge outputs; one channel detects rising edge, the other falling edge with matched 65ns delay. Use Value: Enables accurate dead-time control and reduces THD by eliminating false triggering from propagation skew or supply noise. |
Use Scenario: Monitoring back-EMF zero crossings in brushless DC motor commutation to synchronize rotor position with drive pulses. IC Role / Device Role / Timing Role: TLV1872DGSR compares phase voltage against mid-rail reference using split supplies (±12V), delivering clean logic-level outputs to MCU timers. Use Value: Achieves <1° electrical angle error at 20kHz commutation due to 65ns delay symmetry and ±2.5mV offset stability over temperature. |
| Bipolar Signal Level Translation | Industrial Bipolar Zero-Cross Detector |
Use Scenario: Converting ±10V sensor outputs (e.g., strain gauge bridges) to 3.3V logic levels compatible with ADC reference domains or FPGA I/O banks. IC Role / Device Role / Timing Role: Input stage powered by ±12V (VCCI/VEEI), output stage by 3.3V/GND (VCCO/VEEO); rail-to-rail inputs capture full sensor range. Use Value: Removes need for discrete level-shifting op-amps or resistor dividers, reducing BOM count and improving noise immunity. |
Use Scenario: Detecting AC line zero crossings in industrial PLC I/O modules for synchronized triac firing or energy metering. IC Role / Device Role / Timing Role: TLV1872DGSR senses 230VAC via resistive divider, with VCCI = +12V, VEEI = –12V, VCCO = +3.3V, VEEO = GND - ensuring safe isolation and fast response. Use Value: Delivers 65ns timing resolution and POR suppression of false triggers during brown-out conditions, meeting IEC 61000-4-11 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393BDR | Single-channel, open-drain output, no separate output supplies, 1.3µs propagation delay | Lacks level translation capability; requires external pull-up; unsuitable for symmetric zero-cross timing | Choose LM393BDR only for cost-sensitive, non-timing-critical DC threshold detection with 3.3V/5V logic. |
| TLV1802QDGSRQ1 | Automotive-grade (AEC-Q100), same pinout and function, but rated for –40°C to +150°C junction | Validated for under-hood automotive use; includes enhanced ESD (±4kV HBM) and longer qualification testing | Choose TLV1802QDGSRQ1 when operating ambient exceeds +125°C or automotive qualification is mandatory. |
Compared with LM393BDR, TLV1872DGSR delivers 20× faster propagation, push-pull drive, and supply isolation - critical for timing integrity. Versus TLV1802QDGSRQ1, it offers identical functionality at commercial temperature grade and lower cost, making it optimal for industrial motor drives and audio systems.
Availability
TLV1872DGSR is available at Aetrix Electronics and suitable for Class D amplifiers, motor drives, bipolar zero-cross detectors, and level-translation interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV1872DGSR 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain and power management ICs.
The TLV187x family was designed specifically for high-fidelity timing-critical applications such as Class D audio amplification and motor control, where propagation delay symmetry, supply isolation, and rail-to-rail input performance are essential.
FAQ
What is the maximum allowable voltage difference between VCCI and VEEI for TLV1872DGSR?
The TLV1872DGSR supports an input supply range of 2.7V to 40V (VCCI – VEEI), with absolute maximum rating of 42V. Operation beyond 40V is outside recommended conditions and may impact reliability or parametric performance. For sustained operation, maintain VCCI – VEEI ≤ 40V and ensure VCCO ≤ VCCI and VEEO ≥ VEEI per the supply constraint diagram in section 6.4.1 of SNOSDI4A.
Does TLV1872DGSR support single-supply operation on both input and output stages?
Yes, TLV1872DGSR supports single-supply operation: tie VEEI and VEEO to GND, and set VCCI ≥ VCCO (e.g., VCCI = +12V, VCCO = +3.3V). This configuration enables rail-to-rail input sensing from 0V to +12V while generating 0V–3.3V logic-compatible outputs - ideal for interfacing legacy analog sensors with modern microcontrollers.
How does the Power-On Reset (POR) function in TLV1872DGSR affect system startup behavior?
The TLV1872DGSR POR circuit holds both outputs in high-impedance state for up to 80µs after (VCCI–VEEI) and (VCCO–VEEO) cross 1.9V. This prevents false triggering during power ramp-up. Once both supplies stabilize above threshold, outputs begin responding to inputs with full 65ns propagation delay - ensuring deterministic startup in motor control and audio systems.
Can unused comparator channels in TLV1872DGSR be left floating?
No - unused inputs must not be left floating or tied together. Doing so causes high-frequency oscillation due to internal noise gain. Instead, bias each unused input within the specified common-mode range (VEEI – 0.2V to VCCI + 0.2V) with ≥50mV differential (e.g., IN2+ to GND, IN2– to 1V). This ensures stable quiescent operation and avoids unintended output transitions.
What thermal performance can be expected from TLV1872DGSR in a standard VSSOP-10 PCB layout?
In a standard 2-layer PCB with JEDEC-standard copper pour, TLV1872DGSR exhibits RθJA = 151.4°C/W (DGS package). At 150µA total quiescent current and 30mA transient load, junction temperature rise remains below 15°C above ambient - well within the –40°C to +125°C operating range. For high-power cycling, add thermal vias under the exposed pad per TI's layout guidelines.
TLV1872DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 40V
- :
- 4.5mV @ 12V
- Voltage - Input Offset (Max):
- 500pA @ 12V
- Current - Input Bias (Max):
- 30mA @ 12V
- Current - Output (Typ):
- 85µA, 115µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 110ns (Typ)
- Propagation Delay (Max):
- 2.7mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 10-VSSOP
TLV1872DGSR FAQ
1.How can I place an order for TLV1872DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV1872DGSR 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 TLV1872DGSR reliable?
The price and inventory of TLV1872DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV1872DGSR is usually 5 days.
3.What payment methods are accepted for TLV1872DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV1872DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV1872DGSR?
TLV1872DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV1872DGSR 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 TLV1872DGSR?
For technical support, including TLV1872DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV1872DGSR requirements.
6.How does Aetrix verify that TLV1872DGSR is sourced from the original manufacturer or authorized distributors?
All TLV1872DGSR 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 TLV1872DGSR meets industry standards.
7.What is the process for return or replacement of TLV1872DGSR?
All TLV1872DGSR units undergo pre-shipment inspection (PSI). If there is an issue with TLV1872DGSR, 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 TLV1872DGSR part is unused and in its original packaging.
Return procedure for TLV1872DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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