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Texas Instruments LMP7718MA/NOPB
- Part No.:
- LMP7718MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP7718MA/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,537
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Product details
Overview
LMP7718MA/NOPB from Texas Instruments is a dual, decompensated, precision 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 G = +10, 5.8 nV/√Hz input voltage noise, ±150 µV max input offset voltage, and rail-to-rail output swing within 25 mV of either rail (10 kΩ load), serving as a front-end amplifier in photodiode interfaces and ADC drivers.
For engineers reviewing the LMP7718MA/NOPB datasheet, LMP7718MA/NOPB pinout, LMP7718MA/NOPB application, or LMP7718MA/NOPB equivalent, key selection criteria include its decompensated stability requirement (G ≥ 10), femtoampere-level input bias current (100 fA), guaranteed 2.5V/5.0V performance, −40°C to 125°C operating range, and SOIC-8/VSSOP-8 package compatibility.
Technical Context
The LMP7718MA/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 1.30 mA per channel supply current. Its CMOS input stage provides 100 fA input bias current and 0.01 pA/√Hz input current noise, supporting ground-sensing operation with common-mode range extending to V−.
Stability requires closed-loop gain ≥10 (18–20 dB); external lead-lag compensation enables stable unity-gain operation. Rail-to-rail output uses positive-feedback-enhanced Class AB stage, delivering >40 mA sourcing capability at 1.8V but precluding open-loop comparator use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 88 MHz at G = +10 - enables high-frequency closed-loop amplification without sacrificing DC precision |
| Input Voltage Noise Density | 5.8 nV/√Hz at 1 kHz - preserves SNR in low-amplitude sensor and photodiode signals |
| Input Bias Current | 100 fA max - minimizes error in high-impedance transimpedance and pH sensor circuits |
| Supply Voltage Range | 1.8V to 5.5V - supports single-supply battery-powered instrumentation and portable medical devices |
| Rail-to-Rail Output Swing | 25 mV from rail (10 kΩ) - maximizes dynamic range in low-voltage data acquisition systems |
| Input Offset Voltage | ±150 µV max - ensures accuracy in precision DC-coupled signal chains and sensor front-ends |
| Operating Temperature | −40°C to 125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
The LMP7718MA/NOPB is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) with standard JEDEC MS-012AC footprint and 1.27 mm pitch. Thermal resistance θJA is 190°C/W on 2-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN A | Non-inverting input of Channel A - referenced to V− for ground-sensing single-supply operation |
| 2 | −IN A | Inverting input of Channel A - accepts feedback network for configured gain and stability |
| 3 | OUT A | Amplified output of Channel A - drives loads down to 2 kΩ with rail-to-rail swing |
| 4 | V− | Negative supply rail - shared reference for both channels and input common-mode range lower bound |
| 5 | +IN B | Non-inverting input of Channel B - electrically isolated from Channel A; supports dual independent signal paths |
| 6 | −IN B | Inverting input of Channel B - used for differential or inverting configurations per channel |
| 7 | OUT B | Amplified output of Channel B - identical AC/DC specs to OUT A; no crosstalk degradation up to 100 MHz |
| 8 | V+ | Positive supply rail - powers both amplifiers; supplies internal bias and output stage drive capability |
Key Features
| Feature | Design Value |
|---|---|
| Decompensated architecture | Enables 88 MHz GBW at G ≥ 10 with no additional quiescent current vs. unity-gain-stable alternatives |
| CMOS input stage | Delivers 100 fA input bias current and 0.01 pA/√Hz current noise for ultra-high-Z source interfacing |
| Rail-to-rail output with enhanced drive | Sources >40 mA at 1.8V, enabling direct driving of ADC reference buffers and active filters |
| Guaranteed 2.5V/5.0V performance | Ensures full spec compliance across battery discharge profiles and mixed-voltage system rails |
| −40°C to 125°C operation | Validated over full automotive and industrial temperature range without derating |
Applications
| Photodiode Amplifier | ADC Driver |
|---|---|
Use Scenario: Amplifying weak current from reverse-biased photodiodes in optical smoke detectors and pulse oximeters. 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 and ±150 µV offset ensure detection of sub-nA photocurrents; rail-to-rail output matches 12-bit+ SAR ADC input range. | Use Scenario: Buffering and level-shifting analog sensor outputs before sampling by precision ADCs in data loggers. IC Role / Device Role / Timing Role: High-fidelity, low-distortion driver maintaining signal integrity up to 100 kHz with THD+N < 0.04%. Use Value: 88 MHz GBW and 35 V/µs slew rate support fast settling for multiplexed multi-channel ADC systems. |
| Active Filter Stage | Medical Instrumentation Front-End |
Use Scenario: Implementing 2nd-order Sallen-Key or MFB low-pass filters in ECG signal conditioning paths. IC Role / Device Role / Timing Role: Dual-channel op amp providing matched gain and phase response for differential filtering. Use Value: Matched channel specs and 100 dB PSRR suppress power rail noise; 1.30 mA/channel enables compact battery-operated filter modules. | Use Scenario: Signal conditioning for biopotential electrodes in portable EEG or EMG monitors. IC Role / Device Role / Timing Role: Precision, low-noise, low-drift amplifier for DC-coupled bio-signal amplification with high CMRR. Use Value: 94 dB CMRR and 100 fA bias current minimize electrode polarization errors and motion artifacts in dry-electrode systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA211AIDR | Unity-gain stable; 45 MHz GBW; 1.1 nV/√Hz noise; 3.6 mA/ch supply current | Better noise performance but higher power; no minimum gain constraint | Select when unity-gain stability is mandatory and lower noise outweighs quiescent current penalty |
| LMP7717MA/NOPB | Single-channel version; identical specs per channel; 5-pin SOT-23 or 8-pin SOIC packaging | Same decompensated architecture and performance; reduced channel count for space-constrained designs | Select when only one amplifier is needed and PCB area or BOM simplification is prioritized |
Compared with OPA211AIDR and LMP7717MA/NOPB, the LMP7718MA/NOPB uniquely balances 88 MHz bandwidth, femtoampere input bias, and 1.30 mA/channel efficiency in a dual configuration-making it optimal for dual-path, battery-sensitive, high-precision analog front-ends where gain ≥10 is acceptable.
Availability
LMP7718MA/NOPB is available at Aetrix Electronics and suitable for photodiode amplifiers, ADC drivers, and active filter stages requiring stable component supply, long-term lifecycle assurance, and traceable TI production lots.
Supply support for LMP7718MA/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, embedded processing, and connectivity technologies with over 50 years of innovation in precision amplifiers and signal chain solutions.
The LMP7718MA/NOPB belongs to TI's LMP™ precision amplifier family, engineered for low-voltage, low-noise, high-speed instrumentation applications-including medical sensors, portable test equipment, and industrial process monitoring-where DC accuracy and AC fidelity must coexist.
FAQ
What is the minimum stable gain for LMP7718MA/NOPB?
The LMP7718MA/NOPB is decompensated and requires a minimum closed-loop gain of +10 (20 dB) for unconditional stability. Operating below this gain risks oscillation unless external lead-lag compensation is applied. This is explicitly specified in the datasheet's "Using the Decompensated LMP7717" section and confirmed by its 45 MHz second pole and near-zero phase margin at unity gain. The LMP7718MA/NOPB must not be used as a comparator or in open-loop configurations.
Does LMP7718MA/NOPB support true rail-to-rail input?
No, the LMP7718MA/NOPB does not support rail-to-rail input. Its input common-mode voltage range extends to the negative rail (V−) but only to 1.5 V below V+ at 2.5V supply and 4 V below V+ at 5V supply-verified in the 2.5V and 5V Electrical Characteristics tables. However, it does provide rail-to-rail output swing, with typical 25 mV from either rail into 10 kΩ, making it ideal for single-supply systems where ground-referenced inputs are required.
What package options are available for LMP7718MA/NOPB?
The LMP7718MA/NOPB is offered exclusively in the 8-pin SOIC (Small Outline Integrated Circuit) package, per TI's official datasheet revision March 2013. While the LMP7718 family also includes a VSSOP-8 variant, the "MA" suffix specifically denotes the SOIC-8 package (JEDEC MS-012AC). No SOT-23 or DFN variants exist for the dual-channel LMP7718; the 5-pin SOT-23 is reserved for the single-channel LMP7717.
Can LMP7718MA/NOPB operate from a 1.8V supply?
Yes, the LMP7718MA/NOPB is fully specified and functional at 1.8V supply, but only across the 0°C to 125°C temperature range. At −40°C to 0°C, the minimum supply voltage is 2.0V. This dual-voltage qualification-1.8V @ 0–125°C and 2.0–5.5V @ −40–125°C-is explicitly stated in the Operating Ratings table and enables use in Li-ion battery-powered devices throughout most of their discharge curve.
How does LMP7718MA/NOPB compare to LMP7717MA/NOPB in performance?
The LMP7718MA/NOPB and LMP7717MA/NOPB share identical per-channel electrical specifications: 88 MHz GBW, 5.8 nV/√Hz noise, 100 fA input bias, ±150 µV offset, and rail-to-rail output. The sole differences are channel count (dual vs. single) and package (SOIC-8 only for LMP7718MA/NOPB vs. SOT-23-5 or SOIC-8 for LMP7717MA/NOPB). Both require G ≥ 10 and use TI's VIP50 process-making them drop-in functional equivalents where dual-channel density is needed.
LMP7718MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 11.5V/µs
- Gain Bandwidth Product:
- 88 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 1.3mA (x2 Channels)
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 2 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
LMP7718MA/NOPB FAQ
1.How can I place an order for LMP7718MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7718MA/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 LMP7718MA/NOPB reliable?
The price and inventory of LMP7718MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7718MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMP7718MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7718MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7718MA/NOPB?
LMP7718MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7718MA/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 LMP7718MA/NOPB?
For technical support, including LMP7718MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7718MA/NOPB requirements.
6.How does Aetrix verify that LMP7718MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP7718MA/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 LMP7718MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMP7718MA/NOPB?
All LMP7718MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP7718MA/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 LMP7718MA/NOPB part is unused and in its original packaging.
Return procedure for LMP7718MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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