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Texas Instruments LMV342IDGKR
- Part No.:
- LMV342IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMV342IDGKR.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,975
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Product details
Overview
LMV342IDGKR from Texas Instruments is a dual, 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 LMV342IDGKR datasheet, LMV342IDGKR pinout, LMV342IDGKR application, or LMV342IDGKR equivalent, key selection criteria include its VSSOP-8 package footprint, dual-channel shutdown control, rail-to-rail output swing within 30mV of rails (at 10kΩ load), and extended industrial temperature range (–40°C to 125°C).
Technical Context
The LMV342IDGKR uses 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 rail-to-rail output swing. Its dual-channel architecture shares a single shutdown (SHDN) pin that places both amplifiers into high-impedance, ultra-low-current state (33nA typical at 5V).
It operates across 2.7V–5.5V supply, supports stable unity-gain operation with 70°–72° phase margin (RL = 100kΩ), and maintains <4.5mV max input offset voltage over –40°C to 125°C - making it suitable for precision DC-coupled sensing and audio preamplification where input leakage and offset drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct connection to Li-ion, 3.3V, or 5V rails without regulation. |
| Gain Bandwidth Product | 1MHz (typical) - enables stable unity-gain buffers and low-frequency filtering up to ~100kHz. |
| Slew Rate | 1V/μs (typical) - sufficient for audio-band signals (20Hz–20kHz) with <0.012% THD at 1kHz. |
| Input Offset Voltage | 0.25mV (typical), ≤4.5mV (max over full temp range) - ensures <1mV error in 100mV sensor outputs. |
| Input Bias Current | 1pA (typical), ≤5nA (max at 125°C) - critical for high-impedance pH, photodiode, or piezo sensor interfaces. |
| Shutdown Current | 33nA (typical at 5V) - reduces system standby power by >99.9% vs active mode (150–260μA per channel). |
| Output Swing | Within 7mV of rails (low side) and 7mV of V+ (high side) at 10kΩ load - maximizes dynamic range in single-supply ADC front-ends. |
Pinout & Package
DGK package: 8-pin VSSOP (3.00mm × 3.00mm), thin-profile surface-mount, thermal pad optional, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, Channel 1 | Amplified output node for first op-amp; rail-to-rail capable, high-impedance in shutdown. |
| 1IN– | Inverting Input, Channel 1 | Differential input terminal for channel 1; accepts signals from ground to V+ – 1V. |
| 1IN+ | Noninverting Input, Channel 1 | Differential input terminal for channel 1; same common-mode range as 1IN–. |
| GND | Ground Reference | Primary analog reference node; must be low-impedance and separated from digital ground. |
| 2IN+ | Noninverting Input, Channel 2 | Differential input terminal for second op-amp; independent but identical specs to channel 1. |
| 2IN– | Inverting Input, Channel 2 | Differential input terminal for channel 2; fully isolated from channel 1 except shared supply pins. |
| 2OUT | Output, Channel 2 | Amplified output node for second op-amp; functionally identical to 1OUT. |
| V+ | Positive Supply Rail | Single-supply input (2.7V–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 in single-supply systems - e.g., 0–3.3V output from 3.3V rail with <30mV headroom. |
| 1pA typical input bias current | Enables use with >100MΩ source impedances (e.g., electrochemical sensors) without significant offset error. |
| Integrated shutdown control | Single SHDN pin disables both amplifiers simultaneously, reducing total supply current to <100nA. |
| 20nV/√Hz input voltage noise @10kHz | Preserves SNR in audio preamps and low-level signal chains - lower than most general-purpose CMOS op-amps. |
| –40°C to 125°C operating range | Validated for automotive cabin, industrial motor control, and outdoor IoT sensor nodes without derating. |
Applications
| Battery Monitoring | Audio Preamplifier |
|---|---|
Use Scenario: Real-time monitoring of cell voltage in multi-cell Li-ion packs using resistive dividers and ADC inputs. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between high-impedance divider and SAR ADC, rejecting supply ripple via 82dB PSRR. Use Value: 0.25mV offset ensures ±1mV accuracy on 4.2V cells; shutdown cuts quiescent current during sleep cycles. |
Use Scenario: Low-noise amplification of electret microphone output before ADC sampling in voice-enabled wearables. IC Role / Device Role / Timing Role: Single-supply AC-coupled noninverting amplifier with 20nV/√Hz noise floor and rail-to-rail output swing. Use Value: 1V/μs slew rate supports 20kHz bandwidth; 1pA bias prevents loading of high-Z mic capsule. |
| Portable Equipment Sensor Interface | Supply Current Monitoring |
Use Scenario: Amplifying low-level output from MEMS accelerometers or temperature sensors in handheld medical devices. IC Role / Device Role / Timing Role: Dual-channel signal conditioner - one channel for sensor gain, second for reference buffering or diagnostics. Use Value: Dual configuration saves board space vs discrete solutions; VSSOP-8 fits tight layouts while maintaining 125°C rating. |
Use Scenario: High-side current sensing in USB-C PD adapters using shunt resistor and differential amplifier topology. IC Role / Device Role / Timing Role: Precision difference amplifier with matched internal resistors (implied by low offset drift) for accurate ISENSE measurement. Use Value: CMRR ≥50dB up to 4V common-mode enables accurate sensing at 5V bus; shutdown disables during standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual CMOS op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-E/SN | No shutdown pin; higher 100μA/ch supply current; 2.8MHz GBW; 2.3V–5.5V range. | Lacks power-gating capability; better for higher-speed, always-on signal paths. | Select when shutdown is unnecessary and bandwidth >1MHz is required. |
| TLV2462IDR | Higher 550μA/ch supply current; no shutdown; 6.4MHz GBW; rail-to-rail I/O; 2.7V–6V range. | Optimized for speed over power efficiency; not suitable for ultra-low-quiescent designs. | Choose for applications needing >5MHz bandwidth and tolerance to 6V supplies. |
Compared with MCP6022-E/SN and TLV2462IDR, LMV342IDGKR uniquely combines dual-channel shutdown, sub-100nA shutdown current, and 1pA input bias - making it the only option among the three for battery-life-critical, high-impedance sensor front-ends requiring periodic deep-sleep operation.
Availability
LMV342IDGKR is available at Aetrix Electronics and suitable for battery monitoring, portable audio preamplification, and supply current sensing requiring stable component supply across automotive, industrial, and consumer design cycles.
Supply support for LMV342IDGKR 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 power management ICs, with decades of expertise in precision amplifiers and low-power design.
The LMV34x family was engineered for ultra-low-power, rail-to-rail signal conditioning in space- and energy-constrained portable electronics - emphasizing input bias current, shutdown efficiency, and wide-temperature reliability.
FAQ
What is the maximum supply voltage for LMV342IDGKR?
The absolute maximum supply voltage for LMV342IDGKR is 5.5V. Operation above this level risks permanent damage. Recommended operating range is 2.7V to 5.5V, with stable performance verified at both 2.7V and 5V nominal supplies per TI's SLOS447J datasheet.
Does LMV342IDGKR support true rail-to-rail input?
LMV342IDGKR features rail-to-rail *output* swing but its input common-mode range extends from ground to V+ – 1V - not full rail-to-rail input. This allows interfacing with 0V-referenced sensors while maintaining low offset and bias current, as confirmed in Section 6.3.1 of the datasheet.
How does the shutdown function work on LMV342IDGKR?
LMV342IDGKR uses a single active-low SHDN pin (Pin 5 in SOIC/DGK packages) that disables both amplifiers simultaneously. When pulled low (≤0.2V), supply current drops to 33nA typical (at 5V), and outputs enter high-impedance state. Turn-on time is 5μs typical, as specified in Section 5.7 and 5.8.
What is the thermal resistance (RθJA) of the DGK package for LMV342IDGKR?
The DGK (VSSOP-8) package for LMV342IDGKR has a junction-to-ambient thermal resistance (RθJA) of 196.8°C/W, per Section 5.4 of the datasheet. This value assumes standard JEDEC 2-layer board conditions; actual PCB layout and copper area significantly affect real-world thermal performance.
Can LMV342IDGKR drive a 600Ω load?
Yes - LMV342IDGKR can source/sink up to 85mA (typical at 5V) and 20mA (typical at 2.7V), per Section 5.5 and 5.6. Driving a 600Ω load at ±1V output requires only ~1.7mA, well within spec. THD remains ≤0.012% at 1kHz under these conditions.
LMV342IDGKR 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:
- 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-VSSOP
LMV342IDGKR FAQ
1.How can I place an order for LMV342IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV342IDGKR 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 LMV342IDGKR reliable?
The price and inventory of LMV342IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV342IDGKR is usually 5 days.
3.What payment methods are accepted for LMV342IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV342IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV342IDGKR?
LMV342IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV342IDGKR 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 LMV342IDGKR?
For technical support, including LMV342IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV342IDGKR requirements.
6.How does Aetrix verify that LMV342IDGKR is sourced from the original manufacturer or authorized distributors?
All LMV342IDGKR 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 LMV342IDGKR meets industry standards.
7.What is the process for return or replacement of LMV342IDGKR?
All LMV342IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with LMV342IDGKR, 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 LMV342IDGKR part is unused and in its original packaging.
Return procedure for LMV342IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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