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Texas Instruments LMV793MA/NOPB
- Part No.:
- LMV793MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV793MA/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,204
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Product details
Overview
LMV793MA/NOPB from Texas Instruments is a single-channel, decompensated CMOS-input operational amplifier optimized for high-speed, low-noise 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 in portable medical and sensor instrumentation.
For engineers reviewing the LMV793MA/NOPB datasheet, LMV793MA/NOPB pinout, LMV793MA/NOPB application, or LMV793MA/NOPB equivalent, key selection considerations include its minimum stable gain of +10, 1.15 mA supply current at 5V, −40°C to +125°C operating range, and SOT-23-5 package compatibility with space-constrained, low-voltage analog front-ends.
Technical Context
The LMV793MA/NOPB uses 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 input bias current and rail-to-rail input common-mode range down to V−, supporting ground-sensing in single-supply configurations.
Stability requires closed-loop gain ≥10 (18–20 dB) without external compensation; lead-lag RC networks enable stable operation at lower gains. Output stage delivers ±45 mA sourcing/sinking capability and drives 600 Ω loads with <0.04% THD+N at 1 kHz - critical for high-fidelity active filters and transimpedance amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 88 MHz at AV = +10 - enables wideband signal amplification up to ~8.8 MHz closed-loop bandwidth before 3 dB roll-off. |
| Input Voltage Noise Density | 5.8 nV/√Hz at 1 kHz - preserves SNR in low-level sensor interfaces like photodiodes and strain gauges. |
| Supply Current per Channel | 1.15 mA at 5V - supports battery-powered designs requiring high speed without excessive power draw. |
| Rail-to-Rail Output Swing | 25 mV from rail into 10 kΩ - maximizes dynamic range in 1.8V–5.5V supplies, reducing headroom loss by >50% vs. non-RRO op amps. |
| Input Bias Current | 100 fA typical - minimizes voltage error across high-impedance sources (e.g., >100 MΩ photodiode feedback paths). |
| Operating Temperature Range | −40°C to +125°C - qualified for automotive under-hood, industrial control, and medical equipment environments. |
| Common-Mode Input Range | Includes V− (ground) - allows direct DC-coupled sensing of signals referenced to system ground in single-supply topologies. |
Pinout & Package
LMV793MA/NOPB is housed in a 5-pin SOT-23 package (JEDEC MO-178AA), with exposed pad not electrically connected. Pin 1 is marked via dot; pin numbering follows standard SOT-23 counterclockwise from mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified signal output node; capable of sourcing/sinking ±45 mA and driving 600 Ω loads with minimal distortion. |
| 2 | Inverting Input (−IN) | Differential input terminal; accepts feedback network connection for inverting configurations and sets closed-loop gain. |
| 3 | Non-Inverting Input (+IN) | Differential input terminal; referenced to ground or bias voltage in non-inverting buffers and sensors. |
| 4 | Ground / Negative Supply (V−) | Return path for supply current and reference for input/output voltage ranges; supports single-supply operation from 1.8V. |
| 5 | Positive Supply (V+) | Power input for 1.8V–5.5V operation; supply rejection ratio exceeds 80 dB across 2.0V–5.5V range. |
Key Features
| Feature | Design Value |
|---|---|
| Decompensated architecture | Enables 88 MHz GBW at 1.15 mA - 5× higher bandwidth than unity-gain-stable LMV796 (17 MHz) with identical supply current. |
| CMOS input stage | 100 fA input bias current and 0.01 pA/√Hz current noise - essential for ultra-high-impedance transimpedance amplifiers. |
| Rail-to-rail output | Swings within 25 mV of rails into 10 kΩ - preserves >95% of available voltage swing in 1.8V systems, improving ADC utilization. |
| Low-voltage operation | Specified performance at 2.5V and 5V; functional down to 1.8V (0°C to 125°C) - extends battery life in portable instrumentation. |
| High PSRR & CMRR | ≥80 dB PSRR (2.0V–5.5V) and ≥80 dB CMRR (0V–3.7V) - rejects supply ripple and common-mode interference in noisy embedded systems. |
Applications
| Photodiode Amplifier | ADC Driver |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximetry or environmental light sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal added noise and offset drift. Use Value: 5.8 nV/√Hz noise density and 100 fA input bias current preserve signal integrity from pA-level photocurrents. |
Use Scenario: Driving SAR or sigma-delta ADC inputs in data acquisition systems with 1 MSPS+ sampling rates. IC Role / Device Role / Timing Role: High-speed buffer isolating ADC input from source impedance while settling within 100 ns. Use Value: 35 V/μs slew rate and 88 MHz GBW ensure full-scale step settling in <100 ns, minimizing aperture uncertainty. |
| Active Filter Stage | Medical Front-End Amplifier |
Use Scenario: Implementing 2nd-order low-pass or band-pass filters in ECG or EEG signal chains. IC Role / Device Role / Timing Role: Gain stage in multiple-feedback or state-variable filter topologies requiring wide bandwidth and low distortion. Use Value: 0.04% THD+N at 1 kHz and 88 MHz GBW support clean filtering up to 100 kHz without phase distortion. |
Use Scenario: First-stage amplification of biopotential signals (e.g., EMG, EEG) in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail input/output amplifier providing gain and level-shifting for 1.8V ADCs. Use Value: −40°C to +125°C rating and 25 mV rail margin at 1.8V enable reliable operation in wearable medical hardware. |
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; 1.15 mA supply current; same SOT-23-5 package. | Preferred where gain < +10 is required without external compensation; trades bandwidth for ease of use. | Select LMV796MFX/NOPB when design constraints prohibit external RC compensation or require AV = +1 stability. |
| OPA355UA/2K5 | Unity-gain stable; 200 MHz GBW; 5.5 mA supply current; SO-8 package; 7 nV/√Hz noise. | Suitable for higher-bandwidth, higher-power applications where PCB area permits SO-8 and thermal budget allows >5× current draw. | Choose OPA355UA/2K5 only if 200 MHz GBW is essential and 5.5 mA supply current is acceptable in the system. |
Compared with LMV793MA/NOPB, LMV796MFX/NOPB offers plug-and-play simplicity at 1/5 the bandwidth, while OPA355UA/2K5 delivers 2.3× more bandwidth at 4.8× higher supply current and larger footprint - making LMV793MA/NOPB optimal for space- and power-constrained 10–50 MHz signal chains.
Availability
LMV793MA/NOPB is available at Aetrix Electronics and suitable for photodiode amplification, ADC driver stages, and active filter applications requiring stable component supply across industrial, medical, and portable electronics programs.
Supply support for LMV793MA/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 over 50 years of innovation in precision amplifiers and signal chain solutions.
The LMV793MA/NOPB belongs to TI's LMV79x family of decompensated CMOS op amps, designed specifically for high-speed, low-noise, low-voltage signal conditioning in battery-powered instrumentation and sensor interfaces.
FAQ
What is the minimum stable gain for LMV793MA/NOPB without external compensation?
The LMV793MA/NOPB requires a minimum closed-loop gain of +10 (18–20 dB) for stable operation without external compensation. This is due to its decompensated internal architecture, which places the dominant pole at 1.6 kHz and second pole at 45 MHz. Operating below gain +10 risks oscillation unless lead-lag RC compensation is applied per TI's Application Report SNOSAX6D.
Does LMV793MA/NOPB support true rail-to-rail input operation?
LMV793MA/NOPB supports rail-to-rail output swing but not rail-to-rail input. Its input common-mode voltage range extends to V− (ground) but only to 1.5 V at 2.5V supply and 4 V at 5V supply - meaning it cannot accept signals at V+ without clipping. The input stage is CMOS-based with guaranteed operation from V− to (V+ − 1.0 V) across temperature.
What is the maximum capacitive load LMV793MA/NOPB can drive without instability?
LMV793MA/NOPB can safely drive up to 20 pF capacitive load in unity-gain follower configuration with proper layout (short traces, local bypassing). For loads >20 pF, isolation resistor (10–100 Ω) between output and capacitance is recommended. Data sheet Figure 27 shows overshoot remains <10% up to 120 pF with 10 Ω series resistor - confirming robustness in moderate-capacitance ADC driver roles.
How does LMV793MA/NOPB perform at 1.8V supply voltage?
LMV793MA/NOPB is fully specified at 2.5V and 5V, and functional at 1.8V for temperatures from 0°C to 125°C. At 1.8V, it maintains 88 MHz GBW and 5.8 nV/√Hz noise, though output swing reduces to ~200 mV from rail into 10 kΩ and supply current drops to ~0.95 mA. Full −40°C to +125°C operation requires ≥2.0V supply per Electrical Characteristics tables.
Can LMV793MA/NOPB be used as a comparator?
No - LMV793MA/NOPB is not intended for open-loop comparator use. Its output stage employs positive feedback to enhance current drive, causing unpredictable propagation delay, latch-up risk, and degraded response when overdriven. TI explicitly advises against using LMV793MA/NOPB as a comparator; dedicated comparators like TLV3501 or LMV7215 are recommended instead.
LMV793MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 8-SOIC
LMV793MA/NOPB FAQ
1.How can I place an order for LMV793MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV793MA/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 LMV793MA/NOPB reliable?
The price and inventory of LMV793MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV793MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMV793MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV793MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV793MA/NOPB?
LMV793MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV793MA/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 LMV793MA/NOPB?
For technical support, including LMV793MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV793MA/NOPB requirements.
6.How does Aetrix verify that LMV793MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV793MA/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 LMV793MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMV793MA/NOPB?
All LMV793MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV793MA/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 LMV793MA/NOPB part is unused and in its original packaging.
Return procedure for LMV793MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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