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Texas Instruments LMV722IDGKR
- Part No.:
- LMV722IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMV722IDGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,891
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Product details
Overview
LMV722IDGKR from Texas Instruments is a dual, rail-to-rail output, low-noise (9 nV/√Hz), low-voltage (2.2–5.5 V) operational amplifier in an 8-pin VSSOP package. It delivers 10 MHz gain-bandwidth, 5.25 V/µs slew rate, and 930 µA per amplifier supply current at 2.2 V - optimized for battery-powered audio preamps, active filters, and portable sensor signal conditioning.
For engineers reviewing the LMV722IDGKR datasheet, LMV722IDGKR pinout, LMV722IDGKR application, or LMV722IDGKR equivalent, key selection criteria include its rail-to-rail output swing into 600 Ω (120 mV from rail at 2.2 V), input common-mode range extending to ground, and guaranteed 3.5 mV max input offset voltage over –40°C to 105°C.
Technical Context
The LMV722IDGKR employs a CMOS input stage enabling rail-to-rail input common-mode operation down to ground and low input bias current (260 nA typ). Its internal compensation ensures stable unity-gain operation with 67.4° phase margin at 2.2 V and 72° at 5 V.
It supports heavy capacitive loads without oscillation and maintains 10 MHz bandwidth across 2.2–5.5 V supply range. Output stage design enables ±10 mA sourcing/sinking capability into 600 Ω while sustaining rail-to-rail swing - critical for low-voltage single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.2 V to 5.5 V - enables direct integration into Li-ion (3.0–4.2 V) and single-cell alkaline (1.5 V × 2) systems without LDO. |
| Gain-Bandwidth Product | 10 MHz - supports stable 10× closed-loop gain up to 1 MHz, suitable for anti-aliasing and reconstruction filters. |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - preserves SNR in microphone preamplifiers and precision sensor front-ends. |
| Output Swing (600 Ω) | 120 mV from either rail at 2.2 V - maximizes dynamic range in 2.2 V single-supply applications like wearables. |
| Input Offset Voltage | 3.5 mV max (–40°C to 105°C) - ensures <0.5% error in 1 V full-scale instrumentation amplifiers. |
| Slew Rate | 5.25 V/µs at 5 V - supports 1 Vpp signals up to ~800 kHz without distortion in buffer stages. |
| Quiescent Current | 1.81 mA typ (dual) at 25°C - enables >100-hour battery life in always-on sensor nodes using CR2032. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm body, 0.65 mm pitch, 1.1 mm max height, exposed thermal pad for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN− | Inverting input of Channel 1 - referenced to ground in single-supply configurations with input common-mode down to GND. |
| 2 | 1IN+ | Non-inverting input of Channel 1 - accepts signals from 0 V to VCC−0.3 V, enabling true ground-referenced sensing. |
| 3 | 1OUT | Output of Channel 1 - rail-to-rail swing supports full utilization of ADC input range in 2.2 V systems. |
| 4 | VCC− | Negative supply (typically GND in single-supply use) - shared return path for both amplifiers and thermal pad connection point. |
| 5 | 2IN+ | Non-inverting input of Channel 2 - electrically isolated from Channel 1 inputs; supports dual independent signal paths. |
| 6 | 2IN− | Inverting input of Channel 2 - matched input bias current minimizes offset drift when used in differential configurations. |
| 7 | 2OUT | Output of Channel 2 - capable of driving 600 Ω load to within 120 mV of rails at 2.2 V, matching Channel 1 performance. |
| 8 | VCC+ | Positive supply - decoupling capacitor required within 1 cm for stability; supports 2.2–5.5 V operation without external regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing into 600 Ω | Enables full-scale signal transfer in 2.2 V systems without level-shifting circuitry or supply boosting. |
| Input common-mode range includes ground | Permits direct interfacing with ground-referenced sensors (e.g., electret mics, thermistors) without input biasing resistors. |
| Low 9 nV/√Hz input voltage noise | Maintains >80 dB SNR for 10 mVpp audio signals at 1 kHz, critical for high-fidelity portable audio front-ends. |
| 10 MHz bandwidth at 2.2 V supply | Preserves frequency response in active filters and anti-aliasing stages without de-rating due to low-voltage operation. |
| Guaranteed operation to 105°C | Supports deployment in automotive cabin modules and industrial edge sensors without derating or thermal throttling. |
Applications
| Portable Audio Preamp | Active Filter Stage |
|---|---|
Use Scenario: Amplifying output of electret condenser microphone in Bluetooth headset with 2.2 V supply. IC Role / Device Role / Timing Role: Single-supply transimpedance amplifier with DC-coupled input and rail-to-rail output driving codec ADC. Use Value: 9 nV/√Hz noise floor preserves voice SNR; rail-to-rail swing maximizes 2.2 V ADC dynamic range by 220 mV peak-to-peak. |
Use Scenario: 2nd-order Sallen-Key low-pass filter (fc = 20 kHz) in medical pulse oximeter analog front-end. IC Role / Device Role / Timing Role: Dual op-amp implementing unity-gain buffer + filter integrator with matched channel characteristics. Use Value: 10 MHz GBW ensures <0.1 dB passband flatness to 20 kHz; low VIO (<3.5 mV) prevents baseline shift in DC-coupled SpO₂ signal path. |
| Battery-Powered Sensor Interface | Laptop Touchpad Signal Conditioning |
Use Scenario: Amplifying thermistor bridge output in wireless temperature node powered by CR2032 (3 V). IC Role / Device Role / Timing Role: Instrumentation-grade difference amplifier with ground-referenced inputs and ratiometric reference rejection. Use Value: Input common-mode to GND eliminates need for bias network; 260 nA IIB minimizes thermistor self-heating error at 10 µA excitation. |
Use Scenario: Filtering and amplifying capacitive touch sense signals in ultrabook trackpad ASIC interface. IC Role / Device Role / Timing Role: Low-noise, fast-settling buffer between touch sensor array and SAR ADC sampling at 100 kSPS. Use Value: 5.25 V/µs slew rate ensures <100 ns settling to 0.1% for 1 V step; 1.81 mA total ICC extends battery runtime during continuous polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise low-voltage op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV272IDR | Lower GBW (3 MHz), higher noise (17 nV/√Hz), same VSSOP-8 package and 2.2–5.5 V range. | Not suitable for >500 kHz filter or audio applications requiring wide bandwidth or low noise. | Select TLV272IDR only when cost sensitivity outweighs bandwidth/noise requirements and layout reuse is critical. |
| OPA2316IDGKR | Higher GBW (10 MHz), lower noise (11 nV/√Hz), same VSSOP-8, but higher ICC (1.25 mA per amp at 2.2 V vs. 0.93 mA). | Acceptable for audio and precision apps, but reduces battery life in ultra-low-power sensor nodes. | Choose OPA2316IDGKR when improved PSRR (105 dB vs. 80 dB) or lower THD (0.0005% vs. 0.004%) is required for high-fidelity signal chains. |
Compared with TLV272IDR and OPA2316IDGKR, the LMV722IDGKR uniquely balances 10 MHz bandwidth, 9 nV/√Hz noise, and sub-1 mA per amplifier quiescent current - making it optimal for space-constrained, battery-operated systems demanding both speed and efficiency.
Availability
LMV722IDGKR is available at Aetrix Electronics and suitable for portable audio preamps, active filter stages, and battery-powered sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV722IDGKR 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 amplifiers and low-power signal chain solutions.
The LMV722IDGKR belongs to TI's LMV low-voltage op-amp family, engineered specifically for high-performance, single-supply operation in portable and energy-constrained systems where rail-to-rail output, low noise, and minimal quiescent current are essential.
FAQ
What is the maximum operating junction temperature for the LMV722IDGKR?
The LMV722IDGKR has a specified operating virtual-junction temperature range of –40°C to 105°C, with absolute maximum junction temperature rated at 150°C. This allows reliable operation in automotive cabin modules and industrial edge devices without thermal derating under typical PCB thermal conditions.
Does the LMV722IDGKR support rail-to-rail input operation?
No - the LMV722IDGKR features rail-to-rail *output* swing but its input common-mode voltage range extends only to VCC−0.3 V and down to ground (GND), not to VCC+. This enables ground-referenced sensor interfacing but requires input signal headroom below VCC for proper operation.
Can the LMV722IDGKR drive a 600 Ω load while maintaining rail-to-rail output swing at 2.2 V supply?
Yes - the LMV722IDGKR is characterized to deliver output swing within 120 mV of either rail (VCC+ or VCC−) when driving a 600 Ω load at 2.2 V supply, as confirmed in the Electrical Characteristics table under VO parameter at TJ = 25°C and –40°C to 105°C.
What is the typical input offset voltage drift (TCVIO) of the LMV722IDGKR?
The LMV722IDGKR has a typical input offset voltage average drift (TCVIO) of 0.6 mV/°C at 25°C, as specified in the Electrical Characteristics table. This drift value applies across the full –40°C to 105°C operating range and impacts DC accuracy in precision instrumentation applications.
Is the LMV722IDGKR pin-compatible with other dual op-amps in VSSOP-8 packages?
The LMV722IDGKR uses the industry-standard VSSOP-8 pinout (1IN−, 1IN+, 1OUT, V−, 2IN+, 2IN−, 2OUT, V+), matching TI's TLV272, OPA2316, and many other dual op-amps. However, electrical compatibility (e.g., bandwidth, noise, supply current) must be verified per application - pinout alone does not guarantee functional interchangeability.
LMV722IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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:
- 1.81mA (x2 Channels)
- Current - Output / Channel:
- 52.6 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -45°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LMV722IDGKR FAQ
1.How can I place an order for LMV722IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV722IDGKR 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 LMV722IDGKR reliable?
The price and inventory of LMV722IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV722IDGKR is usually 5 days.
3.What payment methods are accepted for LMV722IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV722IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV722IDGKR?
LMV722IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV722IDGKR 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 LMV722IDGKR?
For technical support, including LMV722IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV722IDGKR requirements.
6.How does Aetrix verify that LMV722IDGKR is sourced from the original manufacturer or authorized distributors?
All LMV722IDGKR 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 LMV722IDGKR meets industry standards.
7.What is the process for return or replacement of LMV722IDGKR?
All LMV722IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with LMV722IDGKR, 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 LMV722IDGKR part is unused and in its original packaging.
Return procedure for LMV722IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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