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Texas Instruments LM6171AIM/NOPB
- Part No.:
- LM6171AIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM6171AIM/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:726
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Product details
Overview
LM6171AIM/NOPB from Texas Instruments is a high-speed, unity-gain-stable voltage-feedback amplifier optimized for video and precision analog signal conditioning. It delivers 3600 V/μs slew rate, 76 MHz unity-gain bandwidth (LM6171A), 110 dB CMRR, 2.5 mA supply current, and operates from ±5 V to ±15 V supplies - enabling high-fidelity NTSC/PAL line driving and ADC/DAC buffering in broadcast and instrumentation systems.
For engineers reviewing the LM6171AIM/NOPB datasheet, LM6171AIM/NOPB pinout, LM6171AIM/NOPB application, or LM6171AIM/NOPB equivalent, this page provides verified pin functions, real-world video and data-converter interface use cases, thermal and stability characteristics under ±5 V and ±15 V operation, and validated alternative options for high-speed amplifier selection.
Technical Context
The LM6171AIM/NOPB uses a voltage-feedback architecture with internal compensation for unity-gain stability. Its high slew rate and wide bandwidth stem from a low-input-capacitance, high-transconductance input stage paired with a robust output stage capable of ±116 mA sourcing into 100 Ω at ±15 V.
It maintains >57° phase margin across supply voltages and load conditions, supports rail-to-rail output swing up to ±13.3 V (±15 V supplies) or ±3.5 V (±5 V supplies), and exhibits low 0.03% differential gain / 0.5° differential phase distortion - critical for composite video fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 3600 V/μs - enables clean 10–20 MHz pulse amplification without slewing distortion in HDTV or pulse detection circuits. |
| Unity-Gain Bandwidth | 76 MHz (LM6171A) - supports stable closed-loop gain ≥1 with ≤0.1% settling in <21 ns for fast data acquisition front-ends. |
| Supply Current | 2.5 mA typical - allows low-power operation in portable ±5 V systems while retaining high-speed performance. |
| CMRR | 110 dB - rejects common-mode noise in noisy industrial or broadcast environments, preserving signal integrity in differential-sense applications. |
| Output Swing | ±13.3 V (RL = 1 kΩ, ±15 V) - delivers full dynamic range for legacy analog video and test equipment requiring large signal excursions. |
| Differential Gain / Phase | 0.03% / 0.5° - meets NTSC/PAL broadcast specifications for minimal color fidelity loss in video distribution amplifiers. |
| Input Voltage Noise | 12 nV/√Hz @ 10 kHz - ensures low-noise amplification in precision instrumentation and active filter stages. |
Pinout & Package
LM6171AIM/NOPB is packaged in an 8-pin SOIC (D package), 4.9 mm × 6 mm body size, with standard surface-mount footprint and thermal pad compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No Connect (N/C) | Internally unconnected; must be left floating or tied to ground/V+ for mechanical stability - no electrical function. |
| 2 (–IN) | Inverting Input | Differential input node for feedback configuration; high-impedance (40 MΩ common-mode) and low bias current (1–3 μA). |
| 3 (+IN) | Non-Inverting Input | High-impedance input for single-ended or differential signal injection; matched to –IN for optimal CMRR. |
| 4 (V–) | Negative Supply Rail | Accepts –5 V to –15 V; must be decoupled locally to minimize PSRR degradation above 100 kHz. |
| 6 (OUTPUT) | Amplified Output | Capable of ±116 mA drive into 100 Ω; requires series resistor or ferrite bead when driving capacitive loads >100 pF. |
| 7 (V+) | Positive Supply Rail | Accepts +5 V to +15 V; dual-supply operation enables true bipolar signal handling and rail-symmetric output swing. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-feedback topology | Enables intuitive gain-setting with standard resistive networks and predictable stability margins - unlike current-feedback amplifiers requiring specialized layout. |
| Unity-gain stability | Operates stably at AV = +1 without external compensation, simplifying design for buffer, gain-of-one, or active filter configurations. |
| ±5 V and ±15 V operation | Supports both portable battery-powered systems (±5 V) and high-dynamic-range test/broadcast gear (±15 V) with identical AC performance scaling. |
| Low distortion (HD2/HD3 < –90 dBc) | Maintains signal purity in ADC driver and video reconstruction paths where harmonic artifacts degrade SNR and image quality. |
| High output current drive | Delivers ±116 mA into 100 Ω at ±15 V - sufficient to directly drive 75 Ω video lines or multiple parallel ADC inputs without external buffers. |
Applications
| NTSC/PAL Video Distribution | ADC Driver for High-Speed Data Acquisition |
|---|---|
Use Scenario: Amplifying and distributing composite video signals across multiple monitors or recording devices in broadcast studios. IC Role / Device Role / Timing Role: Unity-gain buffer with 75 Ω source termination and back-termination capability. Use Value: 0.03% differential gain and 0.5° phase error preserve color accuracy; 75 MHz −3 dB bandwidth supports full NTSC luminance spectrum. |
Use Scenario: Driving the input of a 12-bit, 10 MSPS SAR ADC in automated test equipment. IC Role / Device Role / Timing Role: Low-noise, fast-settling input buffer isolating ADC from source impedance variations. Use Value: 21 ns 0.1% settling time and 12 nV/√Hz input noise ensure full-scale accuracy and >70 dB SNR at Nyquist. |
| HDTV Line Driver | Active Filter for Signal Conditioning |
Use Scenario: Driving HDMI or component video signals over long PCB traces or cables in consumer electronics. IC Role / Device Role / Timing Role: High-current output stage with controlled slew limiting to reduce EMI and maintain signal integrity. Use Value: ±116 mA drive capability sustains 1 VPP into 75 Ω loads; 3600 V/μs slew rate avoids edge rounding on 1080p timing pulses. |
Use Scenario: Implementing a 4th-order low-pass anti-aliasing filter before a high-resolution audio ADC. IC Role / Device Role / Timing Role: Dual-amplifier section in Sallen-Key or state-variable topology with precise gain and phase response. Use Value: 110 dB CMRR and 90 dB open-loop gain enable accurate filter Q and cutoff frequency control across temperature. |
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 (2000 V/μs), lower supply current (4.5 mA), but only specified for ±15 V - no ±5 V support. | Better suited for high-voltage pulse amplification; not drop-in for portable ±5 V designs. | Select THS3091DR when ±15 V operation and ultra-fast pulse fidelity are required, and board space allows SOIC-8 footprint. |
| OPA695ID | Current-feedback architecture (not voltage-feedback), 1.7 GHz GBW, 4300 V/μs slew rate, but requires careful feedback network design. | Superior bandwidth for RF/IF signal chains; unsuitable for precision DC-coupled or unity-gain stable applications. | Choose OPA695ID only for wideband AC-coupled applications where stability analysis and layout control can be rigorously enforced. |
Compared with THS3091DR and OPA695ID, LM6171AIM/NOPB offers guaranteed unity-gain stability, dual-supply flexibility, and proven video distortion performance - making it the preferred choice for broadcast, instrumentation, and mixed-signal interface designs where predictability and ease of use outweigh raw bandwidth.
Availability
LM6171AIM/NOPB is available at Aetrix Electronics and suitable for NTSC/PAL video distribution, high-speed ADC driver, and HDTV line driver applications requiring stable component supply, long-term industrial availability, and TI-qualified manufacturing traceability.
Supply support for LM6171AIM/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 decades of expertise in high-performance op-amps and signal-chain solutions.
The LM6171AIM/NOPB belongs to TI's precision high-speed amplifier product line, engineered specifically for video, instrumentation, and data-acquisition systems demanding low distortion, wide bandwidth, and robust DC accuracy.
FAQ
What supply voltages does the LM6171AIM/NOPB support?
The LM6171AIM/NOPB is fully specified for operation from ±5 V to ±15 V dual supplies, with tested performance across the full range including 2.5 mA typical supply current at ±5 V and 3600 V/μs slew rate at ±15 V. Absolute maximum supply voltage is 36 V (V+ – V–), and it remains unity-gain stable across all supported rails.
Is the LM6171AIM/NOPB unity-gain stable?
Yes, the LM6171AIM/NOPB is internally compensated for unity-gain stability. It achieves ≥57° phase margin and settles to 0.1% in 21 ns (LM6171A) at AV = −1 with ±15 V supplies and 500 Ω load - confirmed per TI's SNOS745D datasheet Section 5.5 and Figure 5-26.
What is the maximum capacitive load the LM6171AIM/NOPB can drive?
The LM6171AIM/NOPB can reliably drive up to 100 pF without external compensation, as shown in Figure 5-23 and 5-40 of the datasheet. For loads >100 pF, a small series resistor (10–47 Ω) at the output is recommended to maintain stability and prevent peaking or oscillation.
Does the LM6171AIM/NOPB meet NTSC and PAL video specifications?
Yes - the LM6171AIM/NOPB delivers 0.03% differential gain and 0.5° differential phase error at 3.58 MHz with 75 Ω terminations, satisfying SMPTE and ITU-R BT.470 requirements for NTSC/PAL broadcast signal distribution as documented in Section 5.5 and Figure 5-44–5-49.
What is the thermal resistance (RθJA) of the LM6171AIM/NOPB in SOIC package?
The LM6171AIM/NOPB in the D (SOIC-8) package has a junction-to-ambient thermal resistance (RθJA) of 122.5 °C/W for the A version and 172 °C/W for the B version, per Section 5.4 of the datasheet. This value assumes standard JEDEC 2-layer board mounting with no copper pour; actual thermal performance improves significantly with PCB copper heatsinking.
LM6171AIM/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:
- 3600V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- 160 MHz
- Current - Input Bias:
- 1 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 2.5mA
- Current - Output / Channel:
- 116 mA
- Voltage - Supply Span (Min):
- 5.5 V
- Voltage - Supply Span (Max):
- 34 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM6171AIM/NOPB FAQ
1.How can I place an order for LM6171AIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6171AIM/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 LM6171AIM/NOPB reliable?
The price and inventory of LM6171AIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6171AIM/NOPB is usually 5 days.
3.What payment methods are accepted for LM6171AIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6171AIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6171AIM/NOPB?
LM6171AIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6171AIM/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 LM6171AIM/NOPB?
For technical support, including LM6171AIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6171AIM/NOPB requirements.
6.How does Aetrix verify that LM6171AIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LM6171AIM/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 LM6171AIM/NOPB meets industry standards.
7.What is the process for return or replacement of LM6171AIM/NOPB?
All LM6171AIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM6171AIM/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 LM6171AIM/NOPB part is unused and in its original packaging.
Return procedure for LM6171AIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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