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Texas Instruments LMV342IDRG4
- Part No.:
- LMV342IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV342IDRG4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,109
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Product details
Overview
LMV342IDRG4 from Texas Instruments is a dual-channel, rail-to-rail output CMOS operational amplifier with shutdown capability, designed for low-voltage (2.7V–5.5V) battery-powered systems. It delivers 1MHz gain bandwidth, 1V/μs slew rate, 0.25mV typical input offset voltage, and ultra-low 1pA typical input bias current - enabling precision signal conditioning in space-constrained portable electronics.
For engineers reviewing the LMV342IDRG4 datasheet, LMV342IDRG4 pinout, LMV342IDRG4 application, or LMV342IDRG4 equivalent, this page provides verified technical context, package-validated pin functions, real-world application mappings, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The LMV342IDRG4 implements a PMOS input stage enabling rail-to-rail common-mode input range down to ground and up to V+ − 1V, paired with a CMOS output stage delivering true rail-to-rail swing (within 30mV of rails at 10kΩ load). Its dual-channel architecture shares a single shutdown control pin (SHDN), allowing independent channel disablement while reducing supply current to ≤1μA (typical) in shutdown mode.
It operates across –40°C to +125°C with guaranteed performance at 2.7V and 5V supplies, featuring 80dB typical CMRR and 82dB typical PSRR at 25°C. The device supports stable unity-gain operation with ≥70° phase margin into 100kΩ loads and exhibits 20nV/√Hz input voltage noise at 10kHz - optimized for low-noise, low-power analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V - supports direct integration into single-cell Li-ion (3.0–4.2V) and 3.3V/5V system rails without level shifting. |
| Gain Bandwidth Product | 1MHz (typical) - enables stable amplification of audio-band signals (≤20kHz) with ≥50dB closed-loop gain at 10kHz. |
| Slew Rate | 1V/μs (typical) - sufficient for 10kHz full-scale sine output at 6.3VPP without distortion in unity-gain buffer configurations. |
| Input Offset Voltage | 0.25mV (typical), 4.5mV (max over temp) - ensures ≤0.1% gain error in 100mV full-scale sensor signal amplification. |
| Input Bias Current | 1pA (typical), 5nA (max at 125°C) - minimizes voltage drop across high-impedance sources (e.g., pH electrodes, photodiode transimpedance feedback networks). |
| Shutdown Current | 0.033μA (typical at 5V), ≤1.5μA (max over temp) - extends battery life in intermittent-sensing applications such as wearable health monitors. |
| Output Swing | Within 7mV of rails (low), 7mV of rails (high) at 10kΩ load and 5V supply - preserves dynamic range in ADC-driven signal chains with 0–5V input spans. |
Pinout & Package
VSSOP-8 (DGK) package: 3.00mm × 3.00mm body, 0.65mm pitch, exposed thermal pad (not electrically connected), RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output of Channel 1 | CMOS rail-to-rail output capable of sourcing/sinking ≥85mA (5V, 25°C); high-impedance in shutdown mode. |
| 1IN− | Inverting Input of Channel 1 | PMOS input node with 1pA bias current; accepts common-mode voltages from GND to V+ − 1V. |
| 1IN+ | Noninverting Input of Channel 1 | PMOS input node matched to 1IN−; used for unity-gain buffers or noninverting amplifier configurations. |
| GND | Analog Ground Reference | Common return path for both channels; must be tied to system AGND with low-impedance connection. |
| 2IN+ | Noninverting Input of Channel 2 | Independent input for second amplifier channel; electrically identical to 1IN+. |
| 2IN− | Inverting Input of Channel 2 | Independent input for second amplifier channel; electrically identical to 1IN−. |
| 2OUT | Output of Channel 2 | CMOS rail-to-rail output identical in performance to 1OUT; independently controllable via shared SHDN pin. |
| V+ | Positive Supply Rail | Single-supply input accepting 2.5–5.5V; requires local 0.1μF ceramic bypass capacitor to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range into 10kΩ loads - eliminates need for negative supply in single-ended sensor interfaces. |
| Ultra-low input bias current (1pA) | Enables use with >100MΩ source impedances (e.g., capacitive touch sensors, piezoelectric transducers) without significant DC error. |
| Integrated shutdown control | Reduces total quiescent current to <1μA per channel - critical for always-on monitoring circuits in IoT edge nodes. |
| 20nV/√Hz input voltage noise @10kHz | Supports high-fidelity audio preamplification and low-noise instrumentation without external filtering overhead. |
| Extended temperature range (–40°C to +125°C) | Validated for under-hood automotive cabin sensors and industrial motor control feedback loops. |
Applications
| Battery Monitoring | Audio Preamplifier |
|---|---|
Use Scenario: Real-time measurement of cell voltage in multi-cell Li-ion packs using resistive divider and ADC sampling. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between high-impedance divider and SAR ADC input. Use Value: 0.25mV offset and 1pA bias current minimize measurement error across 0–4.2V range; rail-to-rail output ensures full ADC utilization. |
Use Scenario: Low-noise amplification of electret microphone output prior to codec ADC input in Bluetooth headsets. IC Role / Device Role / Timing Role: First-stage gain block with selectable gain (10–100×) in AC-coupled configuration. Use Value: 20nV/√Hz noise floor preserves SNR in 100dB SPL voice capture; shutdown mode disables amplifier during mute intervals. |
| Portable ECG Front-End | Supply Current Monitor |
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in handheld medical devices. IC Role / Device Role / Timing Role: Instrumentation-grade gain stage with high CMRR and low-frequency stability. Use Value: 80dB CMRR rejects 50/60Hz mains interference; rail-to-rail output maximizes resolution of 16-bit medical ADCs. |
Use Scenario: Sensing voltage drop across shunt resistor to monitor system-level power consumption in smart meters. IC Role / Device Role / Timing Role: High-side current sense amplifier with programmable gain and shutdown on idle. Use Value: Input common-mode range extending to V+ − 1V allows direct high-side sensing at 3.3V/5V rails; 1MHz bandwidth captures transient load events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | No shutdown pin; higher 550μA/channel supply current; 6.4MHz GBW; 2.5V–6V supply range. | Better suited for higher-speed signal conditioning where shutdown is unnecessary and power budget allows. | Select TLV2462IDR when bandwidth >1MHz is required and continuous operation is acceptable. |
| OPA2316IDGKR | Lower 100μA/channel supply current; no shutdown; 10MHz GBW; 1.8V–5.5V supply; 11nV/√Hz noise @1kHz. | Optimized for ultra-low-power, wide-bandwidth applications like active filters and fast-settling data acquisition. | Choose OPA2316IDGKR when noise performance below 1kHz and bandwidth >1MHz are prioritized over shutdown functionality. |
Compared with TLV2462IDR and OPA2316IDGKR, LMV342IDRG4 uniquely combines shutdown capability, sub-200μA/channel operation, and validated rail-to-rail performance at 2.7V - making it the only option among the three suitable for duty-cycled, battery-sensitive designs requiring guaranteed low-voltage functionality.
Availability
LMV342IDRG4 is available at Aetrix Electronics and suitable for battery monitoring, portable medical devices, audio preamplifiers, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV342IDRG4 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 LMV34x family was engineered for ultra-low-power, rail-to-rail precision amplification in space-constrained portable electronics - targeting applications where battery life, accuracy, and small footprint are simultaneously critical.
FAQ
What is the operating temperature range for LMV342IDRG4?
The LMV342IDRG4 is specified for continuous operation from –40°C to +125°C ambient temperature. This extended industrial range is validated across all key parameters including input offset voltage, CMRR, and supply current - making LMV342IDRG4 suitable for under-hood automotive sensors and industrial motor control environments where thermal stress is present.
Does LMV342IDRG4 support true rail-to-rail input?
LMV342IDRG4 features rail-to-rail output but not rail-to-rail input: its input common-mode range extends from GND to V+ − 1V. This allows ground-referenced sensing and compatibility with single-supply systems, but prohibits direct connection to V+ without attenuation. For full rail-to-rail input, consider alternatives like OPA2316IDGKR.
How does the shutdown function work on LMV342IDRG4?
The LMV342IDRG4 uses an active-low SHDN pin (Pin 5) shared by both channels. Driving SHDN ≤0.2V disables both amplifiers, reducing total supply current to ≤1.5μA (max) while placing outputs in high-impedance state. Turn-on time from shutdown is 5μs (typical), enabling rapid reactivation in burst-mode sensing applications using LMV342IDRG4.
What package type is LMV342IDRG4 supplied in?
LMV342IDRG4 is packaged in an 8-pin VSSOP (DGK) variant measuring 3.00mm × 3.00mm with 0.65mm lead pitch. This compact, surface-mount package includes an exposed thermal pad (non-functional) and matte tin leads - optimized for high-density PCB layouts in portable electronics where board space is constrained.
Can LMV342IDRG4 drive capacitive loads directly?
LMV342IDRG4 is stable driving ≥100pF capacitive loads with proper layout (short traces, local bypassing). For loads >500pF, external isolation resistance (e.g., 10–100Ω in series with output) is recommended to maintain phase margin >60°, as confirmed in Figure 5-24 of the LMV342IDRG4 datasheet. Uncompensated heavy capacitive loading may cause peaking or oscillation.
LMV342IDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 107µA (x2 Channels)
- Current - Output / Channel:
- 113 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMV342IDRG4 FAQ
1.How can I place an order for LMV342IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV342IDRG4 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 LMV342IDRG4 reliable?
The price and inventory of LMV342IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV342IDRG4 is usually 5 days.
3.What payment methods are accepted for LMV342IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV342IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV342IDRG4?
LMV342IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV342IDRG4 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 LMV342IDRG4?
For technical support, including LMV342IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV342IDRG4 requirements.
6.How does Aetrix verify that LMV342IDRG4 is sourced from the original manufacturer or authorized distributors?
All LMV342IDRG4 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 LMV342IDRG4 meets industry standards.
7.What is the process for return or replacement of LMV342IDRG4?
All LMV342IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV342IDRG4, 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 LMV342IDRG4 part is unused and in its original packaging.
Return procedure for LMV342IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV342IDRG4 Tags
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