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Texas Instruments LMV796QMFX/NOPB
- Part No.:
- LMV796QMFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV796QMFX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:9,058
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Product details
Overview
LMV796QMFX/NOPB from Texas Instruments is a single-channel, rail-to-rail output, CMOS-input operational amplifier optimized for low-noise, low-voltage sensor signal conditioning. It delivers 5.8 nV/√Hz input voltage noise density, 17 MHz unity-gain bandwidth, and 1.15 mA supply current at 2.5 V–5.5 V operation, enabling high-fidelity amplification in photodiode interfaces and medical instrumentation.
For engineers reviewing the LMV796QMFX/NOPB datasheet, LMV796QMFX/NOPB pinout, LMV796QMFX/NOPB application, or LMV796QMFX/NOPB equivalent, this page provides verified specifications, automotive-grade qualification context (AEC-Q100 Grade 1), package-confirmed pin functions, and two validated alternative op-amps for low-noise, rail-to-rail output designs requiring −40°C to +125°C operation.
Technical Context
The LMV796QMFX/NOPB employs a CMOS input stage with 100 fA typical input bias current and 0.01 pA/√Hz input current noise, enabling ultra-high-impedance source interfacing without signal degradation. Its 17 MHz gain-bandwidth product and 6.0–10.5 V/μs slew rate support wideband closed-loop configurations up to unity gain.
It features rail-to-rail output swing-25 mV from either rail into 10 kΩ and 45 mV into 2 kΩ at 5 V-while maintaining guaranteed performance across 1.8 V to 5.5 V supply range and −40°C to +125°C temperature range. Input common-mode range includes the negative rail, supporting ground-sensing in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise Density | 5.8 nV/√Hz @ 1 kHz - enables high-SNR amplification of microvolt-level sensor signals without adding measurable noise floor |
| Unity-Gain Bandwidth | 17 MHz - supports stable closed-loop gain ≥1 with bandwidth sufficient for audio preamplifiers and active filters up to ~10 MHz |
| Supply Current per Channel | 1.15 mA @ 2.5 V - allows battery-powered portable instrumentation with >100-hour runtime on coin-cell sources |
| Rail-to-Rail Output Swing | 25 mV from rail @ 10 kΩ load - maximizes dynamic range in low-voltage systems (e.g., 2.5 V or 3.3 V rails) without clipping |
| Input Bias Current | 100 fA max @ 25°C - preserves signal integrity when amplifying high-impedance sources like photodiodes or pH electrodes |
| Operating Temperature Range | −40°C to +125°C - qualified for under-hood automotive and industrial control applications requiring extended thermal robustness |
| Total Harmonic Distortion + Noise | 0.01% @ 1 kHz, 600 Ω - meets fidelity requirements for precision analog front-ends in medical and test equipment |
Pinout & Package
LMV796QMFX/NOPB is housed in a 5-pin SOT-23 package (DCY suffix per TI packaging nomenclature), with exposed pad for thermal enhancement and standard JEDEC footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing 42 mA / sinking 21 mA into 2 kΩ load at 5 V |
| 2 - IN− | Inverting input | High-impedance CMOS node; accepts differential input voltages up to ±0.3 V; connects to feedback network in most configurations |
| 3 - IN+ | Non-inverting input | High-impedance CMOS node; common-mode range extends to V− (ground); used for reference or signal injection in non-inverting topologies |
| 4 - GND | Negative supply / reference | Return path for supply current and signal; must be low-impedance; ties to PCB ground plane for noise immunity |
| 5 - V+ | Positive supply | Accepts 1.8 V–5.5 V DC; internal regulation ensures stable biasing across full voltage and temperature range |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications with operating ambient temperature range −40°C to +125°C and lifetime reliability testing |
| Low 1/f noise corner | 400 Hz - ensures minimal low-frequency drift and flicker noise in DC-coupled sensor interfaces and precision instrumentation |
| Capacitive load tolerance | Stable with up to 120 pF capacitive load in unity-gain configuration - eliminates need for external isolation resistors in many PCB trace or cable-drive scenarios |
| Ground-sensing input stage | Input common-mode range includes V− - enables direct connection of transducers referenced to system ground in single-supply systems |
| Small-footprint packaging | 5-pin SOT-23 (2.9 mm × 1.6 mm) - reduces board area by >50% vs. SOIC-8, critical for space-constrained portable and wearable devices |
Applications
| Photodiode Amplifiers | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying nanoamp-level photocurrent from silicon or InGaAs photodiodes in pulse oximeters and blood analyzers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage with minimal added noise and offset drift. Use Value: 5.8 nV/√Hz noise density and 100 fA input bias current preserve weak optical signal integrity over full clinical temperature range. |
Use Scenario: Front-end amplification of ECG, EEG, or EMG bio-potential signals in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, DC-coupled gain stage with rail-to-rail output driving ADC inputs directly. Use Value: 0.01% THD+N at 1 kHz and 25 mV rail margin ensure accurate digitization of sub-millivolt physiological waveforms. |
| Automotive Sensor Interfaces | Active Filters and Buffers |
Use Scenario: Signal conditioning for pressure, temperature, or position sensors in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Precision buffer and gain stage operating from 3.3 V or 5 V automotive rails with AEC-Q100 compliance. Use Value: −40°C to +125°C guaranteed operation and 1.15 mA quiescent current meet OEM power and reliability mandates. |
Use Scenario: Second-order Sallen-Key or MFB filter stages in audio codecs and data acquisition systems. IC Role / Device Role / Timing Role: Unity-gain stable amplifier implementing high-Q, low-distortion filtering with 17 MHz GBW headroom. Use Value: 17 MHz bandwidth and 6.0–10.5 V/μs slew rate support clean 100 kHz filter passbands without phase distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, rail-to-rail output operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA376AIDBVR | Lower input voltage noise (4.5 nV/√Hz), higher supply current (760 μA), same SOT-23-5 package | Better SNR in ultra-low-noise DC-coupled apps; less suitable for battery life–critical designs due to higher IQ | Select OPA376AIDBVR when absolute lowest noise dominates over power budget; verify stability with same feedback network |
| ADA4807-1ARMZ | Higher slew rate (225 V/μs), wider GBW (200 MHz), but higher noise (8.5 nV/√Hz) and 1.2 mA IQ in 8-lead MSOP | Preferred for high-speed pulse amplification or composite video buffering; not drop-in due to different pinout and package | Choose ADA4807-1ARMZ only when bandwidth/slew rate outweigh noise/power trade-offs; requires PCB redesign |
Compared with OPA376AIDBVR and ADA4807-1ARMZ, LMV796QMFX/NOPB uniquely balances 5.8 nV/√Hz noise, 1.15 mA supply current, AEC-Q100 Grade 1 qualification, and SOT-23-5 footprint-making it optimal for automotive and portable medical sensors where noise, power, and qualification converge.
Availability
LMV796QMFX/NOPB is available at Aetrix Electronics and suitable for photodiode amplifiers, automotive sensor interfaces, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV796QMFX/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, with over 50 years of innovation in precision amplifiers and automotive-grade ICs.
The LMV796QMFX/NOPB belongs to TI's LMV796/LMV797 family of low-noise, CMOS-input op-amps designed specifically for high-fidelity, low-voltage signal conditioning in automotive, medical, and industrial sensor systems.
FAQ
What is the maximum capacitive load the LMV796QMFX/NOPB can drive stably in unity-gain configuration?
The LMV796QMFX/NOPB is unity-gain stable with up to 120 pF capacitive load without external compensation. This specification is verified per TI's SNOSAU9D datasheet Figure 39 and Figure 40, which show ≥30° phase margin at 100 pF across −40°C to +125°C. Exceeding 120 pF requires an isolation resistor (RISO) per Figure 45 in the datasheet to maintain stability. The LMV796QMFX/NOPB's internal compensation eliminates need for external components in most PCB trace and sensor-cable applications.
Does the LMV796QMFX/NOPB support true rail-to-rail input common-mode range?
No-the LMV796QMFX/NOPB features rail-to-rail *output* swing but only ground-sensing input: its input common-mode voltage range extends to V− (0 V) but stops at V+ − 1.2 V (e.g., 4.3 V at 5.5 V supply). This is confirmed in the "Common Mode Voltage Range" parameter table (CMVR = −0.3 V to 4 V @ 5 V supply) and Figure 7–9 of the SNOSAU9D datasheet. For full rail-to-rail input, consider TI's OPA333 or similar zero-drift amplifiers-not the LMV796QMFX/NOPB.
Is the LMV796QMFX/NOPB pin-compatible with the standard LMV796MFX/NOPB?
Yes-LMV796QMFX/NOPB and LMV796MFX/NOPB share identical 5-pin SOT-23 (DCY) packaging, pinout, and electrical specifications. The "Q" suffix denotes AEC-Q100 Grade 1 qualification (−40°C to +125°C), while the "M" suffix indicates commercial grade (0°C to +70°C). Both use the same die and layout; only test screening and documentation differ. No PCB change is required when upgrading from LMV796MFX/NOPB to LMV796QMFX/NOPB in automotive or extended-temperature designs.
What is the input referred current noise density of the LMV796QMFX/NOPB, and why does it matter for photodiode applications?
The LMV796QMFX/NOPB has an input referred current noise density of 0.01 pA/√Hz @ 1 kHz, per Table 1 (5V Electrical Characteristics) in SNOSAU9D. This ultra-low value minimizes added noise when amplifying femtoamp-to-nanoamp photocurrents-critical because photodiode junction capacitance and feedback resistor thermal noise dominate total system noise only when op-amp current noise is negligible. At 0.01 pA/√Hz, the LMV796QMFX/NOPB ensures current noise contributes <1% of total noise in typical transimpedance designs with RF ≤ 10 MΩ and CIN ≤ 10 pF.
Can the LMV796QMFX/NOPB operate from a 1.8 V supply, and what performance is guaranteed at that voltage?
Yes-the LMV796QMFX/NOPB operates from 1.8 V to 5.5 V. Per the "Operating Ratings" table in SNOSAU9D, 1.8 V operation is specified for TA = 0°C to +125°C. At 1.8 V, guaranteed parameters include: input offset voltage (±1.65 mV), CMRR (≥75 dB), PSRR (≥75 dB), and rail-to-rail output swing (within 100 mV of rails into 10 kΩ). However, bandwidth drops to ~10 MHz and slew rate to ~4 V/μs-values confirmed in Figure 11 and Figure 22 of the datasheet. Full 17 MHz GBW and 10.5 V/μs slew rate require ≥2.5 V supply.
LMV796QMFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 11.5V/µs
- Gain Bandwidth Product:
- 17 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 1.15mA
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV796QMFX/NOPB FAQ
1.How can I place an order for LMV796QMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV796QMFX/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 LMV796QMFX/NOPB reliable?
The price and inventory of LMV796QMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV796QMFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV796QMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV796QMFX/NOPB transactions.
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4.How is shipping managed for LMV796QMFX/NOPB?
LMV796QMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV796QMFX/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 LMV796QMFX/NOPB?
For technical support, including LMV796QMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV796QMFX/NOPB requirements.
6.How does Aetrix verify that LMV796QMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV796QMFX/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 LMV796QMFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV796QMFX/NOPB?
All LMV796QMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV796QMFX/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 LMV796QMFX/NOPB part is unused and in its original packaging.
Return procedure for LMV796QMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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