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Texas Instruments LM7171AIM/NOPB
- Part No.:
- LM7171AIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM7171AIM/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:438
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Product details
Overview
LM7171AIM/NOPB from Texas Instruments is a very high-speed, high-output-current voltage-feedback amplifier optimized for video distribution, pulse amplification, and HDSL/ADSL line drivers. It delivers 4100 V/μs slew rate, 200 MHz unity-gain bandwidth, 100 mA output current, and operates on ±5 V or ±15 V supplies - enabling large-signal swing in professional video cameras and CATV signal processing.
For engineers reviewing the LM7171AIM/NOPB datasheet, LM7171AIM/NOPB pinout, LM7171AIM/NOPB application, or LM7171AIM/NOPB equivalent, key selection criteria include slew-rate-limited large-signal fidelity, ±15 V supply compatibility for 13.3 V output swing into 1 kΩ, low harmonic distortion (–75 dBc HD2 at 5 MHz), and SOIC-8 package suitability for high-density analog signal chains.
Technical Context
The LM7171AIM/NOPB uses a symmetrical Class AB input stage with internal current-buffering architecture that emulates current-feedback amplifier slewing while retaining full voltage-feedback configurability - supporting standard op-amp topologies including integrators and I-to-V converters. Its triple-buffered output stage isolates gain circuitry from capacitive loads up to 1000 pF.
Stable for noise gains ≥ +2 (AV = +2 or –1), it achieves 50° phase margin at ±15 V and provides 220 MHz –3 dB bandwidth in noninverting gain-of-2 configuration. Input common-mode range extends to ±13.35 V at ±15 V supply, and open-loop gain remains ≥ 75 dB across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 4100 V/μs at AV = +2, ±15 V - enables clean 13 VPP video pulses with sub-15 ns settling (0.1%) |
| Unity-Gain Bandwidth | 200 MHz (LM7171B grade) - supports >100 MHz closed-loop operation with minimal gain roll-off |
| Output Current | 100 mA sourcing/sinking into 100 Ω - drives transformers, laser diodes, or 75 Ω video lines without external buffers |
| Supply Voltage Range | ±5 V to ±15 V - dual-voltage support allows portable (±5 V) and industrial (±15 V) deployment in same design |
| Harmonic Distortion | –75 dBc HD2 / –88 dBc HD3 at 5 MHz, ±15 V - meets broadcast-grade video SNR requirements |
| Input Offset Voltage | 1 mV max (LM7171A), 3 mV max (LM7171B) - ensures DC accuracy in precision gain stages and ADC front-ends |
| Thermal Resistance | RθJA = 122.5 °C/W (SOIC-8) - requires ≤ 75°C ambient for full 6.5 mA supply current operation at 150°C junction limit |
Pinout & Package
LM7171AIM/NOPB is housed in an 8-pin SOIC (D package), 4.90 mm × 6.00 mm body size with standard JEDEC MS-012AC footprint. Pin 1 is marked with a beveled corner or dot; pins are numbered counter-clockwise from pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - must remain unconnected; no internal bond wire |
| 2 | –IN | Inverting input - high-impedance node (320 MΩ common-mode) for feedback network attachment |
| 3 | +IN | Noninverting input - high-impedance node (320 MΩ common-mode); referenced to V– for level-shifting applications |
| 4 | V– | Negative supply rail - connects to system ground or negative voltage; supplies internal bias current return path |
| 5 | NC | No connection - electrically isolated; PCB pad may be grounded for thermal relief only |
| 6 | OUTPUT | Amplified output - capable of ±13.3 V swing into 1 kΩ at ±15 V, with <1% THD up to 5 MHz |
| 7 | V+ | Positive supply rail - accepts +5 V to +15 V; decoupling capacitor required within 5 mm of pin |
| 8 | NC | No connection - no internal function; avoid routing signals beneath this pad |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-feedback topology with CFA-like slew | Enables use in integrator, photodiode, and active filter circuits - unlike true CFAs which prohibit capacitive feedback |
| Stable at noise gain ≥ +2 | Eliminates need for external compensation in gain-of-2 video buffers or inverting gain-of-1 line drivers |
| Differential gain/phase error | 0.01% / 0.02° - preserves color fidelity in RGB and YUV video distribution without post-correction |
| Low supply current | 6.5 mA typical at ±15 V - reduces thermal load in multi-channel video systems versus legacy 10+ mA alternatives |
| Specified over –40°C to +85°C | Guarantees 100 mA output drive and 200 MHz bandwidth across full industrial temperature range |
Applications
| Professional Video Cameras | HDSL/ADSL Line Drivers |
|---|---|
Use Scenario: Amplifying RGB or component video signals before transmission over coaxial cable. IC Role / Device Role / Timing Role: High-fidelity buffer and driver with minimal group delay variation across 0–100 MHz. Use Value: 0.01% differential gain error preserves color saturation; 220 MHz –3 dB bandwidth supports HD/4K baseband video. |
Use Scenario: Driving twisted-pair telephone lines with high-slew, high-current analog waveforms. IC Role / Device Role / Timing Role: Transmit-side line driver delivering >10 VPP differential signals at >1 MHz. Use Value: 4100 V/μs slew rate prevents distortion on fast DSL symbol edges; ±15 V operation enables >20 VPP headroom. |
| Video Distribution Systems | CATV Signal Processing |
Use Scenario: Splitting and distributing composite or SDI video to multiple monitors or recorders. IC Role / Device Role / Timing Role: Unity-gain repeater with low output impedance (<20 Ω) for driving 75 Ω coaxial lines. Use Value: 100 mA output current sustains signal integrity across 100 m of RG-6 cable without termination loss. |
Use Scenario: Amplifying upstream/downstream RF carriers in cable modem front-ends. IC Role / Device Role / Timing Role: Wideband IF amplifier operating from 5 MHz to 1 GHz with flat group delay. Use Value: –75 dBc HD2 at 5 MHz ensures DOCSIS 3.1 spectral purity; 200 MHz GBW supports multi-carrier aggregation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed voltage-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3091DR | Higher slew rate (6000 V/μs), lower output current (250 mA), SOIC-8 but requires ±15 V only; no ±5 V spec | Better for ultrafast pulse shaping; unsuitable for low-voltage portable designs | Select THS3091DR when >4100 V/μs is mandatory and ±5 V operation is unnecessary |
| OPA695ID | Lower slew rate (1500 V/μs), higher bandwidth (1.7 GHz), SOT-23-6 package; not pin-compatible | Preferred for RF gain blocks >500 MHz; lacks video-grade differential gain/phase specs | Choose OPA695ID for GHz-range small-signal amplification where video fidelity is secondary |
Compared with THS3091DR and OPA695ID, LM7171AIM/NOPB uniquely balances 4100 V/μs slew, ±5/±15 V dual-supply operation, and 0.01% video differential gain - making it the only option qualified for broadcast video distribution and DSL line driving in a single SOIC-8 package.
Availability
LM7171AIM/NOPB is available at Aetrix Electronics and suitable for professional video equipment, DSL infrastructure hardware, and CATV signal processing systems requiring stable component supply and guaranteed long-term manufacturability.
Supply support for LM7171AIM/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 high-performance op-amps and signal-chain solutions.
The LM7171AIM/NOPB belongs to TI's high-speed voltage-feedback amplifier product line, engineered specifically for demanding video, communications, and instrumentation applications where slew rate, output drive, and distortion performance are critical.
FAQ
What supply voltages does the LM7171AIM/NOPB support?
The LM7171AIM/NOPB is fully specified for operation on ±5 V and ±15 V supplies, with recommended operating range from ±5.5 V to ±15 V. At ±5 V, it delivers 3.4 V output swing into 1 kΩ and 31 mA output current; at ±15 V, it achieves 13.3 V swing and 118 mA sourcing capability - enabling flexible deployment across portable and industrial systems.
Is the LM7171AIM/NOPB stable in unity-gain configuration?
No, the LM7171AIM/NOPB is not unity-gain stable. It is designed for minimum noise gain of +2 (noninverting) or –1 (inverting). Attempting unity-gain operation will cause oscillation due to insufficient phase margin. For unity-gain applications, consider TI's OPA656 or OPA695, which are explicitly unity-gain stable.
What is the maximum capacitive load the LM7171AIM/NOPB can drive without instability?
The LM7171AIM/NOPB remains stable driving up to 1000 pF capacitive load in gain-of-2 configuration, as verified in Figure 5-15 and Figure 5-32 of the datasheet. For loads >100 pF, TI recommends adding a 10–47 Ω series resistor between output and capacitance to isolate the amplifier from reactive loading effects.
Does the LM7171AIM/NOPB have ESD protection, and what are its ratings?
Yes, the LM7171AIM/NOPB includes integrated ESD protection rated per JEDEC standards: ±2500 V HBM (Human Body Model) and ±1500 V CDM (Charged Device Model). These ratings meet industrial handling requirements but do not eliminate need for standard ESD-safe PCB layout and assembly practices.
How does the LM7171AIM/NOPB compare to current-feedback amplifiers in video applications?
Unlike current-feedback amplifiers, the LM7171AIM/NOPB retains high-impedance inputs on both +IN and –IN, allowing direct use in photodiode transimpedance, active filters, and integrators - configurations forbidden in CFAs due to low-impedance inverting inputs. Its 0.01% differential gain error also exceeds most CFAs' video performance.
LM7171AIM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- VIP™ III
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4100V/µs
- Gain Bandwidth Product:
- 200 MHz
- -3db Bandwidth:
- 220 MHz
- Current - Input Bias:
- 2.7 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 6.5mA
- Current - Output / Channel:
- 118 mA
- Voltage - Supply Span (Min):
- 5.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM7171AIM/NOPB FAQ
1.How can I place an order for LM7171AIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM7171AIM/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 LM7171AIM/NOPB reliable?
The price and inventory of LM7171AIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM7171AIM/NOPB is usually 5 days.
3.What payment methods are accepted for LM7171AIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM7171AIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM7171AIM/NOPB?
LM7171AIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM7171AIM/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 LM7171AIM/NOPB?
For technical support, including LM7171AIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM7171AIM/NOPB requirements.
6.How does Aetrix verify that LM7171AIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LM7171AIM/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 LM7171AIM/NOPB meets industry standards.
7.What is the process for return or replacement of LM7171AIM/NOPB?
All LM7171AIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM7171AIM/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 LM7171AIM/NOPB part is unused and in its original packaging.
Return procedure for LM7171AIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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