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Texas Instruments LMV793MFX/NOPB
- Part No.:
- LMV793MFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV793MFX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,517
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Product details
Overview
LMV793MFX/NOPB from Texas Instruments is a single-channel, decompensated CMOS-input operational amplifier optimized for low-noise, high-speed signal conditioning in 1.8V–5.5V systems. It delivers 88 MHz gain bandwidth at AV = +10, 5.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing within 25 mV of either rail into 10 kΩ - enabling precision photodiode amplification and ADC driver stages.
For engineers reviewing the LMV793MFX/NOPB datasheet, LMV793MFX/NOPB pinout, LMV793MFX/NOPB application, or LMV793MFX/NOPB equivalent, key selection criteria include its minimum stable gain of 10 V/V, 1.15 mA supply current at 5V, −40°C to +125°C operating range, and SOT-23-5 packaging - all critical for battery-powered sensor front-ends and medical instrumentation where noise, speed, and supply headroom are constrained.
Technical Context
The LMV793MFX/NOPB employs a decompensated two-pole architecture with dominant pole at 1.6 kHz and second pole at 45 MHz, enabling 88 MHz GBW while maintaining 1.15 mA quiescent current. Its CMOS input stage provides 100 fA typical bias current and 0.01 pA/√Hz input current noise - essential for high-impedance transducer interfaces.
Stability requires closed-loop gain ≥10 V/V or external lead-lag compensation (RC network); it is not unity-gain stable. Rail-to-rail output drives ±45 mA into 2 kΩ load and sustains <0.04% THD+N at 1 kHz into 600 Ω - confirming suitability for low-distortion analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 88 MHz at AV = +10 - enables wideband filtering and high-speed buffering without increasing supply current. |
| Input Voltage Noise Density | 5.8 nV/√Hz at 1 kHz - preserves SNR in low-level sensor amplification (e.g., photodiodes, strain gauges). |
| Supply Current per Channel | 1.15 mA at 5V - supports energy-constrained portable instrumentation with minimal thermal impact. |
| Rail-to-Rail Output Swing | 25 mV from rail into 10 kΩ - maximizes dynamic range in 1.8V–3.3V systems, reducing need for level-shifting. |
| Input Bias Current | 100 fA typical - minimizes DC error in high-Z feedback networks and capacitive sensor interfaces. |
| Operating Temperature Range | −40°C to +125°C - qualified for automotive under-hood and industrial control environments. |
| Common-Mode Input Range | Includes negative rail (0 V) - allows ground-referenced single-supply operation without input offset errors. |
Pinout & Package
LMV793MFX/NOPB is packaged in a 5-pin SOT-23 (DBV) outline, footprint-compatible with industry-standard 5-lead SC-74A devices. Thermal resistance θJA is 180°C/W on standard 2-layer PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified signal source/sink node; capable of ±45 mA drive into 2 kΩ at 5V. |
| 2 | Inverting Input (−IN) | Differential input terminal; accepts signals down to V− (0 V) with 80 dB CMRR. |
| 3 | Non-Inverting Input (+IN) | Differential input terminal; common-mode range extends to V− and up to 1.5 V at 2.5V supply. |
| 4 | Ground / Negative Supply (V−) | Reference return path; must be low-impedance to maintain PSRR >80 dB. |
| 5 | Positive Supply (V+) | Power input; operates from 1.8V to 5.5V; supply current varies linearly with V+. |
Key Features
| Feature | Design Value |
|---|---|
| Decompensated Architecture | Enables 5× higher bandwidth than unity-gain-stable equivalents (e.g., LMV796) at identical supply current. |
| Low-Noise CMOS Input | 5.8 nV/√Hz + 0.01 pA/√Hz ensures minimal degradation of weak signals from photodiodes or piezoelectric sensors. |
| Rail-to-Rail Output Stage | Sustains 25 mV headroom into 10 kΩ at 1.8V supply - critical for maximizing resolution in low-voltage ADC drivers. |
| Ground-Sensing Input | CMVR includes V− (0 V), eliminating need for input biasing in single-supply transimpedance configurations. |
| Extended Temperature Range | Specified performance over −40°C to +125°C supports deployment in harsh industrial and automotive environments. |
Applications
| Photodiode Amplifier | ADC Driver |
|---|---|
|
Use Scenario: Amplifying nanoamp-level photocurrent from silicon PIN diodes in pulse oximetry or spectroscopy modules. IC Role / Device Role: Transimpedance amplifier with 10 MΩ–1 GΩ feedback resistor, requiring ultra-low input bias current and voltage noise. Use Value: 100 fA bias current prevents dark-current-induced offset; 5.8 nV/√Hz noise preserves optical SNR at bandwidths up to 10 MHz. |
Use Scenario: Driving SAR or sigma-delta ADC inputs in portable data loggers with 3.3V supplies and 16-bit+ resolution. IC Role / Device Role: Low-distortion, fast-settling buffer between signal conditioner and ADC sample-and-hold. Use Value: 0.04% THD+N at 1 kHz and 35 V/μs slew rate ensure accurate full-scale step response without harmonic aliasing. |
| Active Filter Stage | Medical Front-End |
|
Use Scenario: 2nd-order anti-aliasing or reconstruction filter in ultrasound receive chains operating at 1–5 MHz. IC Role / Device Role: High-Q, low-noise op-amp in multiple-feedback (MFB) or state-variable topology. Use Value: 88 MHz GBW supports filter corner frequencies >1 MHz with <0.1 dB passband ripple; RRO output avoids clipping near supply rails. |
Use Scenario: Biopotential acquisition (ECG/EEG) with dry electrodes and high-impedance sources (>1 MΩ). IC Role / Device Role: First-stage instrumentation amplifier input buffer or right-leg drive amplifier. Use Value: 100 fA input bias current eliminates electrode polarization drift; −40°C to +125°C rating covers sterilization and body-worn thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV796MFX/NOPB | Unity-gain stable; 17 MHz GBW; 1.25 mA supply current; same SOT-23-5 package. | Preferred where gain <10 V/V is required without external compensation components. | Select LMV796MFX/NOPB when design simplicity and guaranteed stability at AV = 1 outweigh bandwidth requirements. |
| OPA320AIDBVR | Unity-gain stable; 20 MHz GBW; 1.75 mA supply current; 0.95 nV/√Hz noise; rail-to-rail I/O. | Better suited for ultra-low-noise, low-power (<1.5 mA) applications below 5 MHz bandwidth. | Choose OPA320AIDBVR when sub-1 nV/√Hz noise dominates over bandwidth, and unity-gain operation is mandatory. |
Compared with LMV796MFX/NOPB and OPA320AIDBVR, LMV793MFX/NOPB uniquely delivers 88 MHz bandwidth at 1.15 mA - making it optimal for gain ≥10 signal paths where speed-noise trade-offs favor bandwidth, such as photodiode TIA stages and high-frequency active filters.
Availability
LMV793MFX/NOPB is available at Aetrix Electronics and suitable for photodiode amplifiers, ADC drivers, and active filter designs requiring stable component supply across industrial, medical, and test equipment programs.
Supply support for LMV793MFX/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 specializing in analog and embedded processing technologies, with decades of expertise in precision amplifiers and low-power signal chain solutions.
The LMV793MFX/NOPB belongs to TI's LMV79x family of decompensated CMOS op-amps, engineered specifically for high-speed, low-noise, low-voltage sensor interface and data acquisition applications.
FAQ
What is the minimum stable gain for LMV793MFX/NOPB?
The LMV793MFX/NOPB requires a minimum closed-loop gain of 10 V/V (20 dB) for unconditional stability without external compensation. This decompensated architecture enables its 88 MHz GBW while maintaining low 1.15 mA supply current. Operating below gain 10 necessitates lead-lag RC compensation per TI's Application Report SNOSAX6D.
Does LMV793MFX/NOPB support rail-to-rail input?
No, LMV793MFX/NOPB does not feature rail-to-rail input. Its input common-mode voltage range extends to the negative rail (0 V) but only up to 1.5 V at 2.5V supply and 4 V at 5V supply. The input stage is CMOS-based with ground-sensing capability - ideal for single-supply configurations - but cannot accept signals near V+.
What package type is used for LMV793MFX/NOPB?
LMV793MFX/NOPB is supplied in a 5-pin SOT-23 (DBV) package, measuring 2.9 mm × 1.6 mm × 1.15 mm. This compact outline matches JEDEC MO-178AB and is compatible with standard SMT pick-and-place equipment and reflow profiles including 260°C wave soldering (10 sec).
Can LMV793MFX/NOPB operate from a 1.8V supply?
Yes, LMV793MFX/NOPB is fully specified for operation at 1.8V supply across 0°C to +125°C ambient temperature. At 1.8V, it maintains 88 MHz GBW, 5.8 nV/√Hz noise, and rail-to-rail output swing - making it suitable for ultra-low-voltage battery-powered instrumentation where supply headroom is constrained.
Is LMV793MFX/NOPB suitable for use as a comparator?
No, LMV793MFX/NOPB is not recommended for open-loop comparator operation. Its output stage uses positive feedback to enhance drive strength, limiting slew rate asymmetry and causing unpredictable propagation delay and output saturation behavior. TI explicitly advises against using LMV793MFX/NOPB as a comparator in SNOSAX6D Section "RRO and Ground Sensing".
LMV793MFX/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:
- 35V/µs
- Gain Bandwidth Product:
- 88 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV793MFX/NOPB FAQ
1.How can I place an order for LMV793MFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV793MFX/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 LMV793MFX/NOPB reliable?
The price and inventory of LMV793MFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV793MFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV793MFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV793MFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV793MFX/NOPB?
LMV793MFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV793MFX/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 LMV793MFX/NOPB?
For technical support, including LMV793MFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV793MFX/NOPB requirements.
6.How does Aetrix verify that LMV793MFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV793MFX/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 LMV793MFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV793MFX/NOPB?
All LMV793MFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV793MFX/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 LMV793MFX/NOPB part is unused and in its original packaging.
Return procedure for LMV793MFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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