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Texas Instruments LMV342MMX
- Part No.:
- LMV342MMX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMV342MMX.pdf
- Description:
- IC CMOS 2 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,192
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Product details
Overview
LMV342MMX from Texas Instruments is a dual rail-to-rail output CMOS operational amplifier optimized for low-voltage portable applications. It delivers 1 MHz gain bandwidth, 1 V/µs slew rate, 100 µA supply current per amplifier, 20 fA input bias current, and operates from 2.7 V to 5.5 V - enabling precision signal conditioning in battery-powered audio and sensing circuits.
For engineers reviewing the LMV342MMX datasheet, LMV342MMX pinout, LMV342MMX application, or LMV342MMX equivalent, key selection criteria include its dual-channel architecture, VSSOP-8 package footprint, rail-to-rail output swing (within 30 mV of rails at 2 kΩ load), ultra-low input bias current, and −40°C to +125°C industrial-plus temperature range.
Technical Context
The LMV342MMX implements a patented Class AB turnaround stage that reduces input-referred voltage noise (29 nV/√Hz at 10 kHz) and offset voltage drift (1.7 µV/°C typical) while maintaining 1 MHz bandwidth and 1 V/µs slew rate across 2.7–5.5 V supply. Its PMOS input stage enables 20 fA input bias current and high input impedance.
It features independent dual amplifiers with no internal shutdown control - unlike the single-channel LMV341-N - and requires separate V+ and V− supplies (not single-supply ground-referenced). Common-mode input range extends to within 200 mV of V− and 1.7 V below V+ at 2.7 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct integration into Li-ion (3.0–3.7 V) and dual-cell alkaline (3.0 V) systems without regulation. |
| Gain Bandwidth Product | 1 MHz - enables stable unity-gain buffer or gain-of-10 configurations up to 100 kHz with ≥70° phase margin. |
| Slew Rate | 1 V/µs - sufficient for 100-kHz full-power sine wave output at 6.3 VPP into 10 kΩ load. |
| Input Bias Current | 20 fA (typical) - minimizes voltage error in high-impedance sensor interfaces (e.g., pH electrodes, photodiode transimpedance). |
| Input Offset Voltage | 0.55 mV (typical at 25°C) - ensures ≤5.5 mV max over −40°C to +125°C, suitable for precision DC-coupled signal chains. |
| Output Swing | Rail-to-rail: within 30 mV of V+ and 24 mV of V− at 2 kΩ load (2.7 V supply) - maximizes dynamic range in low-voltage ADC driver stages. |
| Supply Current per Channel | 100 µA (typical at 25°C) - enables dual-amplifier operation at <200 µA total, critical for multi-day battery life in portable monitors. |
Pinout & Package
LMV342MMX is packaged in an 8-pin VSSOP (DGK) with nominal body size 3.00 mm × 3.00 mm, optimized for space-constrained PCB layouts in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT A (Pin 1) | Amplifier A output | Capable of sourcing/sinking ≥20 mA; rail-to-rail swing enables direct interface to SAR ADC reference buffers. |
| IN A– (Pin 2) | Inverting input, Channel A | High-impedance node (20 fA bias); connects to feedback network in inverting amplifier or transimpedance configurations. |
| IN A+ (Pin 3) | Noninverting input, Channel A | Accepts common-mode voltages from V− to (V+ − 1.7 V) at 2.7 V supply - supports single-supply sensor biasing. |
| V− (Pin 4) | Negative supply rail | Must be connected to system ground or negative rail; not internally tied to GND - enables true dual-supply operation. |
| IN B+ (Pin 5) | Noninverting input, Channel B | Independent of Channel A; allows simultaneous processing of two analog signals (e.g., stereo audio, differential sensor pairs). |
| IN B– (Pin 6) | Inverting input, Channel B | Electrically isolated from Channel A inputs - prevents crosstalk in multi-channel filtering or instrumentation topologies. |
| OUT B (Pin 7) | Amplifier B output | Functionally identical to OUT A; supports independent loading and does not share output stage resources with Channel A. |
| V+ (Pin 8) | Positive supply rail | Supplies both amplifiers; decoupling capacitor (≥100 nF) required at pin for stability under dynamic load conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Delivers >98% of full supply voltage swing at 2 kΩ load - preserves signal fidelity in low-voltage data acquisition front-ends. |
| PMOS input architecture | Enables 20 fA input bias current and >10¹³ Ω input impedance - eliminates significant error in high-Z source applications like piezoelectric sensors. |
| Class AB turnaround stage | Reduces input voltage noise to 29 nV/√Hz at 10 kHz and lowers offset drift to 1.7 µV/°C - improves DC accuracy over temperature. |
| Wide operating temperature | Specified from −40°C to +125°C - qualified for automotive cabin modules, industrial IoT edge nodes, and medical wearable environments. |
| Low quiescent power | 100 µA per channel at 25°C - allows dual-opamp implementation in always-on battery monitoring circuits with sub-200 µA total draw. |
Applications
| Battery Voltage Monitoring | Portable Audio Line Driver |
|---|---|
Use Scenario: Real-time measurement of Li-ion cell voltage during charge/discharge cycles in smart battery packs. IC Role / Device Role / Timing Role: Dual op-amp configured as precision unity-gain buffer (Channel A) and differential subtractor (Channel B) for cell-to-cell delta-V detection. Use Value: 0.55 mV typical VOS and 20 fA IB minimize measurement error across 2.7–4.2 V range; rail-to-rail output ensures full-scale ADC utilization. |
Use Scenario: Driving stereo headphone outputs from DACs in Bluetooth earbuds with 3.3 V supply. IC Role / Device Role / Timing Role: Dual-channel line driver with DC-blocking capacitors, providing matched gain and phase response for L/R channels. Use Value: 1 MHz GBW and 1 V/µs slew rate support 20 kHz audio bandwidth with <0.017% THD+N; VSSOP-8 footprint saves >40% board area vs SOIC-8. |
| Medical Sensor Signal Conditioning | PCMCIA Interface Buffer |
Use Scenario: Amplifying low-level biopotential signals (ECG, EMG) from dry electrodes in wearable health monitors. IC Role / Device Role / Timing Role: Instrumentation-grade front-end: Channel A as noninverting amplifier (gain = 100), Channel B as right-leg drive (RLD) buffer. Use Value: 20 fA IB prevents electrode polarization; rail-to-rail output drives anti-aliasing filter without headroom loss; −40°C to +125°C rating covers clinical and ambulatory use. |
Use Scenario: Level-shifting and buffering analog signals between PCMCIA card logic (3.3 V) and host controller (5 V tolerant). IC Role / Device Role / Timing Role: Dual op-amp used as bidirectional voltage translator and impedance isolator on analog I/O lines (e.g., audio-in, modem line). Use Value: 2.7–5.5 V operation matches both 3.3 V card and 5 V host domains; 100 µA/channel current enables hot-swap compatibility without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6022-E/SN | Higher supply current (120 µA/ch), lower GBW (10 MHz), no rail-to-rail input - input common-mode range excludes V−. | Better AC performance but unsuitable for true single-supply sensor interfaces requiring V−-referenced inputs. | Select when higher bandwidth is needed and input common-mode includes ground; avoid when interfacing with grounded sensors. |
| TLV2462IDR | Higher VOS (2 mV max), higher IB (1 pA), same GBW/slew rate, rail-to-rail I/O - wider input voltage range (to V+). | Acceptable for less precise DC applications; superior input range supports higher-side current sensing above V+. | Choose for cost-sensitive designs where 2 mV offset is acceptable and input must extend to V+; not optimal for ultra-low-IB requirements. |
Compared with MCP6022-E/SN and TLV2462IDR, LMV342MMX provides the lowest input bias current (20 fA) and tightest offset (0.55 mV typ) in its class, making it uniquely suited for high-impedance, precision DC signal paths - though it trades off input rail-to-rail capability for ultra-low bias.
Availability
LMV342MMX is available at Aetrix Electronics and suitable for battery monitoring, portable audio, medical wearables, and PCMCIA interface applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LMV342MMX 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-N family was designed specifically for low-voltage portable electronics - delivering rail-to-rail output, ultra-low power, and high-precision performance in miniature packages for space- and energy-constrained applications.
FAQ
What is the operating temperature range for LMV342MMX?
The LMV342MMX is specified to operate from −40°C to +125°C across all electrical parameters. This industrial-plus temperature range is validated per TI's SNOS990H datasheet and supports deployment in automotive cabin modules, industrial field sensors, and medical wearable devices exposed to wide ambient conditions. LMV342MMX maintains 100 µA supply current and 1 MHz GBW across this full range.
Does LMV342MMX have a shutdown pin?
No, LMV342MMX does not include a shutdown pin. Shutdown functionality is exclusive to the single-channel LMV341-N variant (pin 5 = SHDN). The LMV342MMX is a dual-amplifier device with no enable/disable control - both channels remain active whenever V+ and V− are powered. To reduce system power, external switching of the supply rails is required.
What package type is used for LMV342MMX?
LMV342MMX is supplied in an 8-pin VSSOP package (TI package code DGK), with nominal dimensions of 3.00 mm × 3.00 mm and 0.65 mm lead pitch. This surface-mount package offers 40% smaller footprint than standard SOIC-8 and is compatible with automated PCB assembly processes including reflow soldering per JEDEC J-STD-020.
Can LMV342MMX operate from a single 3.3 V supply?
Yes, LMV342MMX supports single-supply operation from 3.3 V (within its 2.7–5.5 V range). Its input common-mode range extends to V− (ground) and up to V+ − 1.7 V, allowing direct connection of grounded sensors. Output swings rail-to-rail - within 30 mV of 0 V and 3.3 V - enabling full utilization of 12-bit ADCs without level-shifting circuitry.
What is the input bias current specification for LMV342MMX?
LMV342MMX has a typical input bias current of 20 fA at 25°C, with a maximum of 120 pA over −40°C to +125°C. This ultra-low value stems from its PMOS input stage and is critical for minimizing voltage error in high-impedance applications such as photodiode transimpedance amplifiers, pH probe interfaces, and capacitive sensor front-ends. LMV342MMX achieves this while maintaining 1 MHz bandwidth and rail-to-rail output.
LMV342MMX 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:
- 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:
- 0.02 pA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 107µA (x2 Channels)
- Current - Output / Channel:
- 113 mA
- Voltage - Supply Span (Min):
- 2.7 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
LMV342MMX FAQ
1.How can I place an order for LMV342MMX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV342MMX 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 LMV342MMX reliable?
The price and inventory of LMV342MMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV342MMX is usually 5 days.
3.What payment methods are accepted for LMV342MMX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV342MMX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV342MMX?
LMV342MMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV342MMX 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 LMV342MMX?
For technical support, including LMV342MMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV342MMX requirements.
6.How does Aetrix verify that LMV342MMX is sourced from the original manufacturer or authorized distributors?
All LMV342MMX 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 LMV342MMX meets industry standards.
7.What is the process for return or replacement of LMV342MMX?
All LMV342MMX units undergo pre-shipment inspection (PSI). If there is an issue with LMV342MMX, 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 LMV342MMX part is unused and in its original packaging.
Return procedure for LMV342MMX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV342MMX Tags
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