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Texas Instruments LMV7272TL/NOPB
- Part No.:
- LMV7272TL/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-WFBGA, DSBGA
- Datasheet:
-
LMV7272TL/NOPB.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:5,130
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Product details
Overview
LMV7272TL/NOPB from Texas Instruments is a dual rail-to-rail input, low-power voltage comparator in an 8-pin DSBGA package, delivering 880 ns propagation delay at 1.8 V supply, 9 µA per channel supply current, and input common-mode range extending 0.1 V beyond rails. It serves as a precision threshold detector in battery-powered sensor interfaces and power-monitoring circuits.
For engineers reviewing the LMV7272TL/NOPB datasheet, LMV7272TL/NOPB pinout, LMV7272TL/NOPB application, or LMV7272TL/NOPB equivalent, key selection criteria include ultra-low quiescent current, rail-to-rail input operation down to 1.8 V, push-pull output stage eliminating external pull-ups, and guaranteed 4 mV input offset voltage across temperature.
Technical Context
The LMV7272TL/NOPB integrates two independent comparators with paralleled PNP/NPN bipolar input stages enabling rail-to-rail input operation from –0.1 V to V+ + 0.1 V. Its push-pull CMOS output stage delivers rail-to-rail swing without external components and supports sourcing/sinking up to 6 mA per channel at 1.8 V.
It operates across 1.8 V to 5.5 V single-supply or ±0.9 V to ±2.75 V dual-supply configurations, with input bias current of 10 nA and input offset current of 200 pA - critical for high-impedance sensing nodes in wearable and portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct integration into Li-ion (3.0–4.2 V), coin-cell (1.8–3.0 V), and USB-powered (5 V) systems. |
| Supply Current per Channel | 9 µA typical at 1.8 V - allows continuous monitoring in multi-year battery-operated devices like medical wearables. |
| Propagation Delay | 880 ns at 20-mV overdrive, 1.8 V - supports fast response in overvoltage/undervoltage lockout and ADC window-compare functions. |
| Input Offset Voltage | 4 mV max - ensures reliable detection of small signal thresholds (e.g., 50-mV battery voltage sag) without calibration. |
| Input Common-Mode Range | –0.1 V to V+ + 0.1 V - permits direct sensing of signals near ground or supply rails, e.g., battery cell voltage monitoring. |
| Output Type | Push-pull CMOS - eliminates need for external pull-up resistors, reducing BOM count and board space in compact layouts. |
Pinout & Package
LMV7272TL/NOPB uses an 8-pin DSBGA (YZR) package measuring 1.50 mm × 1.50 mm, optimized for space-constrained portable electronics. The package features bottom-side solder balls and requires specific mounting precautions due to light sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A | Output, Channel A | CMOS push-pull output capable of sourcing/sinking ≥3.5 mA at 1.8 V; compatible with 1.8-V logic inputs. |
| –IN A | Inverting Input, Channel A | Differential input node with 10 nA bias current; accepts voltages from –0.1 V to V+ + 0.1 V. |
| +IN A | Noninverting Input, Channel A | Differential input node matched to –IN A; enables standard comparator configurations (e.g., window detect). |
| V– | Negative Supply Voltage | Ground reference pin for single-supply operation; must be connected to system GND or negative rail. |
| +IN B | Noninverting Input, Channel B | Independent second comparator input; electrically isolated from Channel A with no crosstalk. |
| –IN B | Inverting Input, Channel B | Second differential input pair; supports dual-threshold or redundant sensing architectures. |
| OUT B | Output, Channel B | Independent push-pull output; can drive separate logic domains or enable sequencing control. |
| V+ | Positive Supply Voltage | Primary power pin; accepts 1.8–5.5 V; bypass capacitor (0.1 µF) required adjacent to pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Operates with input signals from –0.1 V to V+ + 0.1 V - enables direct sensing of battery voltage, thermistor dividers, and shunt monitor outputs without level-shifting. |
| Ultra-low supply current | 9 µA per channel at 1.8 V - extends battery life in always-on applications such as smoke detectors and fitness trackers. |
| Push-pull output architecture | Eliminates external pull-up resistors - reduces component count, PCB area, and power loss in high-density portable designs. |
| Low input offset drift | 20 µV/°C - maintains threshold accuracy across –40°C to +85°C industrial temperature range without recalibration. |
| Bipolar input transistors | Provides superior noise immunity vs. CMOS-input comparators - critical for EMI-prone environments like motor control feedback paths. |
Applications
| Battery Voltage Monitoring | Wearable Sensor Interface |
|---|---|
Use Scenario: Real-time detection of Li-ion cell voltage crossing 3.0 V (low-voltage warning) and 4.2 V (overvoltage protection) in smartwatches. IC Role / Device Role / Timing Role: Dual-channel comparator performing independent high- and low-threshold comparison on a single voltage divider output. Use Value: Enables precise, low-power state-of-charge estimation using only one resistor network and two comparator channels - saving PCB area and BOM cost. | Use Scenario: Converting analog output from a MEMS accelerometer (±100 mV full-scale) into digital edge-triggered interrupts for motion wake-up. IC Role / Device Role / Timing Role: High-gain comparator with <1 µV effective resolution detecting zero-crossings and peak excursions in low-noise sensor paths. Use Value: Achieves sub-100 ns response to mechanical shock events while consuming <20 µA total - extending multi-week battery life in hearables. |
| Power Sequencing Control | ADC Window Comparator |
Use Scenario: Enforcing strict power-up order for FPGA core (1.0 V) and I/O (3.3 V) rails in embedded vision modules. IC Role / Device Role / Timing Role: Two independent comparators monitoring each rail's voltage ramp with programmable hysteresis via external resistors. Use Value: Guarantees safe startup by asserting reset only after both rails exceed their thresholds - preventing latch-up or configuration corruption. | Use Scenario: Validating that analog sensor output remains within ±5% of nominal value before triggering ADC conversion in industrial IoT nodes. IC Role / Device Role / Timing Role: Dual comparator configured as window detector, comparing signal against upper/lower reference voltages derived from precision bandgap. Use Value: Reduces MCU wake-up frequency by 90% versus periodic sampling - cutting average system current to <5 µA in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV7272MME/NOPB | Same silicon, SC70-8 package (2.00 mm × 2.13 mm); higher thermal resistance (265°C/W vs. 220°C/W). | Less suitable for ultra-dense layouts; requires larger PCB footprint and exhibits higher junction temperature at same load. | Select LMV7272TL/NOPB when board area is constrained below 2.25 mm² and thermal performance is critical. |
| TLV7032DR | Lower supply current (620 nA/channel), but slower propagation (3 µs), no rail-to-rail input (V– + 0.2 V min), and open-drain outputs requiring pull-ups. | Optimized for ultra-low-power wake-up only; unsuitable for real-time monitoring or driving logic directly. | Choose TLV7032DR only for intermittent wake-up duty cycles; LMV7272TL/NOPB is preferred for continuous sensing or push-pull interface needs. |
Compared with LMV7272MME/NOPB, LMV7272TL/NOPB saves 0.75 mm² PCB area and improves thermal dissipation by 17%; versus TLV7032DR, it delivers 3.4× faster response and eliminates external pull-up resistors - making it optimal for space- and timing-critical portable systems.
Availability
LMV7272TL/NOPB is available at Aetrix Electronics and suitable for battery-powered electronics, wearable devices, and portable medical instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for LMV7272TL/NOPB 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 components.
The LMV727x product line was designed specifically for ultra-low-power, rail-to-rail input sensing in space-constrained portable electronics - balancing speed, accuracy, and energy efficiency at 1.8-V operation.
FAQ
What is the maximum operating supply voltage for LMV7272TL/NOPB?
The LMV7272TL/NOPB supports a maximum supply voltage of 5.5 V across its V+ and V– pins. This rating applies under recommended operating conditions and is validated per absolute maximum ratings in the datasheet. Exceeding 5.5 V risks permanent damage. At 5.5 V, the device draws 30 µA per channel and achieves 2.1 µs propagation delay - confirming robust operation across the full 1.8–5.5 V range. LMV7272TL/NOPB maintains rail-to-rail input functionality and 4 mV offset specification up to this limit.
Does LMV7272TL/NOPB support dual-supply operation?
Yes, LMV7272TL/NOPB supports true dual-supply operation with V+ and V– pins accepting symmetric or asymmetric rails. It functions with supplies ranging from ±0.9 V to ±2.75 V (e.g., ±1.5 V or +3.3 V/–1.8 V). In dual-supply mode, the input common-mode range extends from V– – 0.1 V to V+ + 0.1 V, preserving rail-to-rail capability. The push-pull output swings from V– to V+, enabling direct interfacing with bipolar logic families. LMV7272TL/NOPB's 10 nA input bias current remains stable regardless of supply configuration.
What is the purpose of the light-sensitivity note in the LMV7272TL/NOPB DSBGA package documentation?
The DSBGA package of LMV7272TL/NOPB contains silicon structures sensitive to ambient light, which can induce photocurrents altering input bias behavior and offset voltage. TI specifies mounting precautions - including opaque conformal coating or light-blocking shields - during PCB assembly. This is not a reliability defect but a physical property of the die construction. LMV7272TL/NOPB characterization data assumes proper light shielding; unshielded units may exhibit up to 200 pA additional input current under bright illumination. Always follow TI's DSBGA mounting guidelines to ensure LMV7272TL/NOPB meets datasheet specifications.
Can LMV7272TL/NOPB drive a 10-kΩ load directly without performance degradation?
Yes, LMV7272TL/NOPB can drive a 10-kΩ resistive load directly while maintaining full rail-to-rail output swing and specified propagation delay. At 1.8 V supply, its push-pull output delivers VOH ≥ 1.74 V and VOL ≤ 220 mV into 10 kΩ, meeting 1.8-V logic high/low thresholds. Load capacitance up to 50 pF has negligible effect on delay, per AC characteristics tables. However, for loads <5 kΩ, output voltage swing compresses slightly - e.g., VOH drops to 1.63 V at 1.5 mA sink - so LMV7272TL/NOPB is best suited for medium-impedance logic interfaces, not low-impedance bus drivers.
How does the input stage crossover affect LMV7272TL/NOPB performance near V+?
The LMV7272TL/NOPB uses paralleled PNP/NPN input pairs with a crossover point ~950 mV below V+, causing input offset voltage (VOS) to vary with common-mode voltage (VCM). Near V+, the NPN pair dominates and VOS shifts by up to ±1 mV versus mid-rail values. This is documented in Figure 1 (VOS vs. VCM) of the datasheet. To maintain accuracy, design VCM > 0.2 V below V+ or use hysteresis. LMV7272TL/NOPB's guaranteed 4 mV max VOS includes this variation across –40°C to +85°C, so no derating is needed - but precision threshold designs should avoid the 0.1-V zone immediately below V+.
LMV7272TL/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-WFBGA, DSBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- CMOS, Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V, ±0.9V ~ 2.75V
- :
- 4mV @ 5V
- Voltage - Input Offset (Max):
- 0.01µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 14µA
- Current - Quiescent (Max):
- 78dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 2.1µs
- Propagation Delay (Max):
- -
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-DSBGA
LMV7272TL/NOPB FAQ
1.How can I place an order for LMV7272TL/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV7272TL/NOPB 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 LMV7272TL/NOPB reliable?
The price and inventory of LMV7272TL/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV7272TL/NOPB is usually 5 days.
3.What payment methods are accepted for LMV7272TL/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV7272TL/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV7272TL/NOPB?
LMV7272TL/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV7272TL/NOPB 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 LMV7272TL/NOPB?
For technical support, including LMV7272TL/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV7272TL/NOPB requirements.
6.How does Aetrix verify that LMV7272TL/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV7272TL/NOPB 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 LMV7272TL/NOPB meets industry standards.
7.What is the process for return or replacement of LMV7272TL/NOPB?
All LMV7272TL/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV7272TL/NOPB, 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 LMV7272TL/NOPB part is unused and in its original packaging.
Return procedure for LMV7272TL/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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