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Texas Instruments LMV834MTX/NOPB
- Part No.:
- LMV834MTX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMV834MTX/NOPB.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:13,955
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Product details
Overview
LMV834MTX/NOPB from Texas Instruments is a quad-channel, rail-to-rail output, low-power CMOS operational amplifier optimized for EMI-hardened signal conditioning in precision sensor interfaces and portable electronics. It delivers 3.3-MHz gain-bandwidth, 240-µA per-channel supply current, 1-mV max input offset voltage, 12 nV/√Hz input voltage noise at 1 kHz, and 120-dB EMI rejection ratio at 1.8 GHz - enabling stable operation in RF-noisy environments such as industrial IoT sensor nodes and battery-powered medical devices.
For engineers reviewing the LMV834MTX/NOPB datasheet, LMV834MTX/NOPB pinout, LMV834MTX/NOPB application, or LMV834MTX/NOPB equivalent, key selection criteria include its quad-channel TSSOP-14 footprint, −40°C to +125°C operating range, 2.7-V to 5.5-V supply flexibility, rail-to-rail output swing, and validated EMI immunity up to 2.4 GHz - critical for photodiode preamps, piezoelectric sensor front-ends, and high-fidelity analog signal chains where RF interference must be suppressed without external filtering.
Technical Context
The LMV834MTX/NOPB implements a unity-gain-stable CMOS input stage with input bias current as low as 0.1 pA at 25°C, supporting high-impedance sources like photodiodes and piezoelectric transducers. Its internal architecture maintains stability with capacitive loads up to 200 pF, eliminating need for isolation resistors in many buffer configurations.
EMI hardening is achieved via on-die RF rejection circuitry that suppresses induced offset voltage shifts - quantified by EMIRR of 120 dB at 1.8 GHz - making it distinct from standard op-amps in RF-exposed applications such as wireless peripheral interfaces and automotive cabin sensors where mobile-band interference is prevalent.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V - supports single-supply operation from Li-ion (3.3 V) or USB (5 V) rails without level-shifting. |
| Supply Current per Channel | 240 µA at 3.3 V - enables ultra-low-power operation in always-on sensor monitoring systems. |
| Input Offset Voltage | ±1 mV max - ensures <100-µV error in 100-mV full-scale pressure sensor outputs without trimming. |
| Gain-Bandwidth Product | 3.3 MHz - supports closed-loop gains up to 33 at 100-kHz signal bandwidth for anti-aliasing filter stages. |
| EMI Rejection Ratio | 120 dB at 1.8 GHz - reduces RF-induced offset drift to <1 µV under 100-mV peak RF fields, minimizing post-processing correction. |
| Output Swing | Rail-to-rail - delivers >3.1 Vpp output from 3.3-V supply, maximizing dynamic range into ADCs with 3.3-V reference. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control cabinet deployment. |
Pinout & Package
LMV834MTX/NOPB is housed in a 14-pin TSSOP package (4.4 mm × 5.0 mm body size), optimized for space-constrained PCB layouts while maintaining thermal performance (RθJA = 118.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN A+, IN A− | Noninverting/Inverting Input, Channel A | Differential pair for first op-amp channel; accepts common-mode voltage down to ground. |
| OUT A | Output, Channel A | Rail-to-rail output capable of sourcing/sinking 30 mA; drives 2-kΩ loads within 36 mV of rails at 3.3 V. |
| IN B+, IN B− | Noninverting/Inverting Input, Channel B | Second independent amplifier input pair; electrically isolated from Channel A per datasheet channel separation >120 dB @ 1 MHz. |
| OUT B | Output, Channel B | Independent output with identical specs to OUT A; no crosstalk impact on adjacent channels below −120 dB. |
| IN C+, IN C− | Noninverting/Inverting Input, Channel C | Third amplifier input; supports high-Z sensor interfacing with 0.1-pA input bias current. |
| OUT C | Output, Channel C | Delivers 2-V/µs slew rate; settles within 1 µs for 1-V step with <0.1% error in unity-gain buffer configuration. |
| IN D+, IN D− | Noninverting/Inverting Input, Channel D | Fourth channel input; shares same EMI-hardened input structure as other channels for consistent RF immunity. |
| OUT D | Output, Channel D | Full rail-to-rail swing; maintains 91-dB CMRR across −40°C to +125°C for stable DC-coupled sensor offsets. |
| V+ | Positive Power Supply | Connects to main supply rail (2.7–5.5 V); decoupling capacitor required within 1 cm for EMI suppression. |
| V− | Negative Power Supply | Ground reference pin; must be low-impedance return path to minimize PSRR degradation and EMI coupling. |
Key Features
| Feature | Design Value |
|---|---|
| EMI-hardened input architecture | Reduces RF-induced offset voltage shift to <1 µV under 100-mVPEAK 1.8-GHz field, eliminating need for external RF chokes in sensor front-ends. |
| Rail-to-rail output stage | Delivers >98% of supply voltage swing - e.g., 3.23 Vpp from 3.3-V rail - maximizing SNR into 12-bit+ SAR ADCs. |
| 0.1-pA input bias current (25°C) | Enables direct connection to high-impedance piezoelectric elements (>1 GΩ) without signal attenuation or drift. |
| 3.3-MHz GBW with unity-gain stability | Supports active filter designs up to 100 kHz without phase-margin compensation components. |
| −40°C to +125°C operation | Validated performance across full industrial temperature range, including guaranteed 1-mV VOS max at 125°C. |
Applications
| Photodiode Preamp | Piezoelectric Sensor Interface |
|---|---|
Use Scenario: Amplifying weak current signals from ambient light-sensing photodiodes in smart building occupancy detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1-MΩ feedback resistor, leveraging 0.1-pA input bias and 12 nV/√Hz noise for sub-pA resolution. Use Value: Enables >100-dB dynamic range without cooling or external shielding, even near Wi-Fi 2.4-GHz transceivers. | Use Scenario: Conditioning charge output from vibration-sensing piezoceramic elements in predictive maintenance modules. IC Role / Device Role / Timing Role: High-input-impedance voltage follower with integrated EMI rejection, replacing discrete RC filters. Use Value: Maintains signal fidelity up to 50 kHz while rejecting mobile-phone burst interference, reducing BOM count by two passive components per channel. |
| Portable Medical Monitor | Industrial Pressure Transmitter |
Use Scenario: Signal conditioning for disposable ECG electrodes in handheld patient monitors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Quad-channel front-end: 2× instrumentation amp inputs, 1× reference buffer, 1× low-pass filter driver. Use Value: 240-µA per channel draw extends battery life beyond 72 hours; rail-to-rail output matches 3.3-V ADC reference. | Use Scenario: Amplifying millivolt-level bridge outputs from MEMS pressure sensors in HVAC control valves. IC Role / Device Role / Timing Role: Precision differential-to-single-ended converter with <1-mV total offset error over temperature. Use Value: Eliminates factory calibration for offset drift; 125°C rating supports operation inside sealed metal enclosures near motors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV824IDR | Lower EMI rejection (90 dB @ 900 MHz), higher input offset (3.5 mV max), same TSSOP-14 package. | Lacks validated 120-dB EMIRR at 1.8 GHz; unsuitable for RF-dense environments like cellular baseband sections. | Select when cost sensitivity outweighs EMI immunity requirements and system-level RF filtering is already present. |
| OPA2333AIDR | Zero-drift architecture, 2-µV max VOS, but only dual-channel; 17-µA supply current per channel vs. 240 µA. | Superior DC precision but lower bandwidth (350 kHz) and no specified EMIRR - not a drop-in replacement for RF-immune AC-coupled sensing. | Prefer for ultra-low-drift DC applications (e.g., weigh scales); avoid where 3.3-MHz bandwidth or 1.8-GHz EMI rejection is mandatory. |
Compared with LMV824IDR and OPA2333AIDR, LMV834MTX/NOPB uniquely balances high-speed (3.3 MHz), ultra-low-power (240 µA/ch), and industry-leading EMI immunity (120 dB @ 1.8 GHz) in a quad-channel TSSOP package - making it the only option among the three qualified for unshielded photodiode preamps in consumer wireless devices.
Availability
LMV834MTX/NOPB is available at Aetrix Electronics and suitable for photodiode preamplifiers, piezoelectric sensor interfaces, and portable medical monitors requiring stable component supply across extended temperature ranges and RF-exposed environments.
Supply support for LMV834MTX/NOPB 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMV83x product line was engineered specifically for EMI-hardened, low-power precision amplification in sensor signal chains - targeting applications where RF interference from wireless communications degrades analog integrity without added shielding.
FAQ
What is the maximum capacitive load the LMV834MTX/NOPB can drive while remaining stable?
The LMV834MTX/NOPB maintains unity-gain stability with capacitive loads up to 200 pF, as verified in TI's datasheet Figure 25. This eliminates the need for series isolation resistors in most buffer and filter driver configurations, simplifying layout and preserving signal integrity in high-frequency sensor interfaces.
Does the LMV834MTX/NOPB support true rail-to-rail input common-mode range?
No - the LMV834MTX/NOPB features rail-to-rail *output* swing but has an input common-mode voltage range that includes ground (down to V−) and extends to V+ − 1.2 V. At 3.3 V supply, this allows input signals from 0 V to 2.1 V, sufficient for most single-supply sensor front-ends.
How does the EMI rejection ratio of the LMV834MTX/NOPB compare at different RF frequencies?
The LMV834MTX/NOPB achieves 80 dB EMIRR at 400 MHz, 90 dB at 900 MHz, 110 dB at 1.8 GHz, and 120 dB at 2.4 GHz - demonstrating progressively stronger rejection at higher frequencies typical of Bluetooth, Wi-Fi, and LTE bands, directly addressing interference in modern wireless environments.
Can the LMV834MTX/NOPB operate from a 2.7-V supply while meeting all specifications?
Yes - the LMV834MTX/NOPB is fully specified from 2.7 V to 5.5 V. At 2.7 V, it retains 240 µA per-channel supply current, 3.3-MHz GBW, rail-to-rail output swing (within 44 mV of rails), and 1-mV max input offset voltage across −40°C to +125°C, enabling compatibility with energy-harvesting and low-voltage battery systems.
What is the thermal resistance (RθJA) of the LMV834MTX/NOPB in its TSSOP-14 package?
The LMV834MTX/NOPB in the PW (TSSOP-14) package has a junction-to-ambient thermal resistance (RθJA) of 118.2°C/W when mounted on a standard JEDEC 2-layer board - allowing continuous operation at full 1.16-mA total supply current up to +85°C ambient without derating.
LMV834MTX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 3.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 920µA (x4 Channels)
- Current - Output / Channel:
- 63 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:
- 14-TSSOP
LMV834MTX/NOPB FAQ
1.How can I place an order for LMV834MTX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV834MTX/NOPB 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 LMV834MTX/NOPB reliable?
The price and inventory of LMV834MTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV834MTX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV834MTX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV834MTX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV834MTX/NOPB?
LMV834MTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV834MTX/NOPB 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 LMV834MTX/NOPB?
For technical support, including LMV834MTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV834MTX/NOPB requirements.
6.How does Aetrix verify that LMV834MTX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV834MTX/NOPB 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 LMV834MTX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV834MTX/NOPB?
All LMV834MTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV834MTX/NOPB, 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 LMV834MTX/NOPB part is unused and in its original packaging.
Return procedure for LMV834MTX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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