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Texas Instruments LMV721IDCKT
- Part No.:
- LMV721IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV721IDCKT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
LMV721IDCKT from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage, low-noise, and low-power applications. It delivers 10 MHz unity-gain bandwidth, 5.25 V/µs slew rate at 5 V supply, 9 nV/√Hz input voltage noise at 1 kHz, 930 µA supply current per amplifier at 2.2 V, and rail-to-rail swing into 600 Ω (120 mV from rails). It is used in electret microphone preamplifiers, portable audio buffers, and battery-powered sensor signal conditioning.
For engineers reviewing the LMV721IDCKT datasheet, LMV721IDCKT pinout, LMV721IDCKT application, or LMV721IDCKT equivalent, this page provides verified technical context, package-specific pin mapping, real-world use-value analysis, and validated alternative options - all grounded in TI's SLOS470C revision C datasheet and official packaging documentation.
Technical Context
The LMV721IDCKT employs a CMOS input stage with ground-sensing input common-mode range (–0.3 V to VCC–0.3 V) and a Class AB output stage enabling true rail-to-rail swing under load. Its 10 MHz gain-bandwidth product and 67.4° phase margin at 2.2 V support stable unity-gain buffer and active filter configurations without external compensation.
Designed for operation from 2.2 V to 5.5 V, it maintains 75 dB large-signal voltage gain (RL = 600 Ω), 80 dB PSRR at DC, and 70 dB CMRR across –40°C to 105°C. Input offset voltage is specified at ≤3.5 mV over temperature, and capacitive load drive capability is characterized up to 21.2 nF with resistive isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.2 V to 5.5 V - enables direct interface with Li-ion (3.0–4.2 V), single-cell alkaline (1.5 V w/ boost), and 3.3 V logic systems without level shifting. |
| Unity-Gain Bandwidth | 10 MHz - supports audio bandwidth amplification (20 Hz–20 kHz) with >500× gain margin and stable 1×–10× closed-loop gains. |
| Input Voltage Noise | 9 nV/√Hz @ 1 kHz - critical for low-level signal integrity in microphone preamps and precision sensor interfaces where thermal noise dominates. |
| Rail-to-Rail Output Swing | 120 mV from either rail into 600 Ω @ 2.2 V - maximizes dynamic range in low-voltage systems, delivering >2.0 Vpp usable output swing. |
| Quiescent Current | 930 µA/amplifier @ 2.2 V - allows continuous operation in always-on wearable sensors or IoT endpoints with multi-year battery life. |
| Input Common-Mode Range | Includes ground (–0.3 V to VCC–0.3 V) - permits direct connection of single-ended transducers (e.g., electret mics, thermistors) without biasing networks. |
| Slew Rate | 5.25 V/µs @ 5 V - ensures <1% THD for 100 kHz, 2 Vpp signals and supports fast-settling active filters in portable instrumentation. |
Pinout & Package
LMV721IDCKT is packaged in SC-70 (DCK), a 5-pin, 2.0 mm × 1.25 mm surface-mount package with 0.65 mm pitch and maximum height of 1.1 mm - optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC− (Ground) | Power return reference; must be low-impedance connection to system ground plane to minimize noise coupling into CMOS input stage. |
| 2 | IN− | Inverting input; high-impedance node (260 nA bias current) requiring guarded layout and minimal trace capacitance for stability. |
| 3 | OUT | Amplifier output; capable of sourcing/sinking ≥10 mA into 600 Ω load while maintaining rail-to-rail swing and low THD. |
| 4 | IN+ | Non-inverting input; shares same input voltage noise (9 nV/√Hz) and common-mode range as IN−; used for unity-gain follower or high-Z sensor buffering. |
| 5 | VCC+ | Positive supply; accepts 2.2–5.5 V; decoupling capacitor (0.1 µF ceramic) required within 2 mm of pin to suppress supply-induced oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise CMOS input | 9 nV/√Hz input voltage noise + 0.3 pA/√Hz current noise enables high-fidelity amplification of microvolt-level transducer outputs. |
| Rail-to-rail output with heavy-load drive | Delivers 120 mV from rails into 600 Ω at 2.2 V, preserving >90% of full-scale dynamic range in battery-powered systems. |
| Ground-sensing input common-mode range | Accepts inputs down to –0.3 V, eliminating need for external bias resistors when interfacing with ground-referenced sensors or mics. |
| Stable at low supply voltages | Maintains 67.4° phase margin and 10 MHz GBW from 2.2 V to 5.5 V - no performance trade-off across operating range. |
| Qualified for extended temperature | Specified from –40°C to +105°C junction temperature - suitable for automotive cabin modules and industrial edge sensors. |
Applications
| Electret Microphone Preamp | Portable Audio Line Driver |
|---|---|
|
Use Scenario: Amplifying output of low-output electret condenser microphone in Bluetooth headset or voice-controlled IoT device. IC Role / Device Role / Timing Role: Single-supply, AC-coupled non-inverting amplifier with gain of 100×, configured as low-noise preamplifier stage. Use Value: 9 nV/√Hz noise floor preserves SNR of weak mic signals; rail-to-rail output drives 10 kΩ codec input directly without level-shifting circuitry. |
Use Scenario: Driving stereo headphone output or line-level signal to ADC in handheld medical monitor or fitness tracker. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC output from variable cable/load impedance while maintaining bandwidth. Use Value: 10 MHz GBW ensures flat frequency response to 200 kHz; 5.25 V/µs slew rate prevents slew-induced distortion on transient-rich audio waveforms. |
| Battery-Powered Sensor Interface | Low-Voltage Active Filter |
|
Use Scenario: Conditioning analog output of MEMS accelerometer or thermistor in coin-cell-powered environmental sensor node. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with adjustable gain and offset correction, powered from 3.0 V coin cell. Use Value: 930 µA quiescent current extends 10-year battery life; 3.5 mV max input offset enables accurate DC measurement without calibration. |
Use Scenario: Implementing 2nd-order low-pass anti-aliasing filter before SAR ADC in portable data logger. IC Role / Device Role / Timing Role: Dual-stage op-amp in Sallen-Key topology, operating from 3.3 V supply with 10 kHz cutoff. Use Value: Stable 10 MHz GBW supports Q > 2 filter designs without peaking; rail-to-rail swing maximizes ADC utilization across full 3.3 V range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-voltage operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2761IDBVR | Lower supply current (550 µA @ 2.7 V) but reduced GBW (3.3 MHz) and higher input noise (25 nV/√Hz). | Better suited for ultra-low-power sleep-mode wake-up amplifiers; insufficient bandwidth for audio or fast sensor sampling. | Select TLV2761IDBVR only when power budget <600 µA dominates and bandwidth ≤500 kHz is acceptable. |
| OPA333AIDBVR | Zero-drift architecture (0.1 µV/°C drift), lower offset (10 µV typ), but higher supply current (17 µA) and lower GBW (350 kHz). | Ideal for precision DC-coupled instrumentation (e.g., weigh scales); not viable for AC-coupled audio or >10 kHz signal paths. | Choose OPA333AIDBVR when µV-level DC accuracy and long-term drift stability outweigh speed and power requirements. |
Compared with TLV2761IDBVR and OPA333AIDBVR, LMV721IDCKT uniquely balances 10 MHz bandwidth, 9 nV/√Hz noise, and sub-1 mA quiescent current - making it the only option among the three suitable for battery-powered audio front-ends requiring both fidelity and runtime.
Availability
LMV721IDCKT is available at Aetrix Electronics and suitable for portable audio design, battery-powered sensor nodes, and low-voltage industrial monitoring requiring stable component supply across production lifecycles.
Supply support for LMV721IDCKT 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, embedded processing, and connectivity technologies, with over 50 years of innovation in precision amplifiers and low-power signal chains.
The LMV721IDCKT belongs to TI's LMV low-voltage op-amp family, engineered specifically for energy-constrained, noise-sensitive applications in portable consumer and industrial electronics where 2.2–5.5 V operation and rail-to-rail performance are mandatory.
FAQ
What is the maximum operating junction temperature for LMV721IDCKT?
The LMV721IDCKT is rated for operation from –40°C to +105°C junction temperature, as confirmed in the Recommended Operating Conditions table of TI's SLOS470C datasheet. This rating applies across its full 2.2 V to 5.5 V supply range and supports deployment in automotive cabin modules and industrial edge environments.
Does LMV721IDCKT support rail-to-rail input operation?
No, LMV721IDCKT does not support rail-to-rail input. Its input common-mode voltage range extends from –0.3 V to VCC–0.3 V, meaning it includes ground but cannot accept signals at the positive rail. This is explicitly stated in the Electrical Characteristics tables for both 2.2 V and 5 V supply conditions.
What package type and dimensions does LMV721IDCKT use?
LMV721IDCKT uses the SC-70 (DCK) package: 5-pin, 2.0 mm × 1.25 mm body size, 0.65 mm lead pitch, and maximum height of 1.1 mm. Mechanical drawings DCK0005A confirm these dimensions, and TI's Package Option Addendum lists "SC70 (DCK) | 5" as the official package type.
Can LMV721IDCKT drive a 600 Ω load effectively at 2.2 V supply?
Yes, LMV721IDCKT is explicitly characterized to drive 600 Ω loads at 2.2 V: output swing is specified as 120 mV from either rail (i.e., 2.0 Vpp minimum), and output current capability is ≥10 mA sourcing/sinking. These values are measured and guaranteed in the Electrical Characteristics tables under VCC+ = 2.2 V conditions.
Is LMV721IDCKT pin-compatible with LMV721IDBVR?
No, LMV721IDCKT (SC-70/DCK) and LMV721IDBVR (SOT-23/DBV) are not pin-compatible. Although both are 5-pin single op-amps, their pinouts differ: DCK places VCC− at Pin 1 and OUT at Pin 3, while DBV places OUT at Pin 1 and VCC− at Pin 3. Layout redesign is required for substitution.
LMV721IDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 5.25V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 260 nA
- Voltage - Input Offset:
- 80 µV
- Current - Supply:
- 1.03mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV721IDCKT FAQ
1.How can I place an order for LMV721IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV721IDCKT 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 LMV721IDCKT reliable?
The price and inventory of LMV721IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV721IDCKT is usually 5 days.
3.What payment methods are accepted for LMV721IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV721IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV721IDCKT?
LMV721IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV721IDCKT 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 LMV721IDCKT?
For technical support, including LMV721IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV721IDCKT requirements.
6.How does Aetrix verify that LMV721IDCKT is sourced from the original manufacturer or authorized distributors?
All LMV721IDCKT 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 LMV721IDCKT meets industry standards.
7.What is the process for return or replacement of LMV721IDCKT?
All LMV721IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with LMV721IDCKT, 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 LMV721IDCKT part is unused and in its original packaging.
Return procedure for LMV721IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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