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Texas Instruments LM7171BIM/NOPB
- Part No.:
- LM7171BIM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM7171BIM/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,355
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Product details
Overview
LM7171BIM/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 laser diode driver circuits.
For engineers reviewing the LM7171BIM/NOPB datasheet, LM7171BIM/NOPB pinout, LM7171BIM/NOPB application, or LM7171BIM/NOPB equivalent, key selection criteria include slew-rate-limited transient response, ±15 V supply compatibility, SOIC-8 thermal performance (RθJA = 172 °C/W), and differential gain/phase accuracy of 0.01%/0.02° for broadcast-grade signal integrity.
Technical Context
The LM7171BIM/NOPB uses a symmetrical Class AB input stage with triple-buffered output architecture to achieve CFA-like slew behavior while retaining standard VFA configuration flexibility. Its internal degeneration resistor (RE) sets slew rate proportionally to input voltage, enabling predictable large-signal dynamics at gains ≥ +2.
Stable for noise gains ≥ +2, it avoids CFA limitations in integrator, photodiode, or I-to-V applications. The device maintains 50° phase margin at ±15 V and supports ±13.35 V common-mode input range, making it suitable for DC-coupled video signal chains requiring wide dynamic range and low THD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 4100 V/μs at ±15 V, AV = +2 - enables sub-10 ns settling for 10 V step signals without slewing distortion |
| Unity-Gain Bandwidth | 200 MHz (LM7171B) - supports full-power bandwidth up to ~140 MHz for 1 VPP signals |
| Output Current | ±100 mA linear output drive - sufficient for driving 50 Ω coaxial lines or transformer-coupled video loads |
| Supply Current | 6.5 mA typical at ±15 V - balances speed and power efficiency for portable and mains-powered systems |
| Differential Gain/Phase | 0.01% / 0.02° - meets SMPTE 259M broadcast video fidelity requirements |
| Input Offset Voltage | 3 mV max (−40°C to +85°C) - ensures minimal DC error in precision gain stages |
| THD @ 5 MHz | −75 dBc (2nd/3rd harmonic) - preserves signal purity in ADC/DAC interface and RF IF amplification |
Pinout & Package
LM7171BIM/NOPB is housed in an 8-pin SOIC (D package), 4.90 mm × 6.00 mm body size with standard JEDEC MS-012AC footprint. Thermal resistance RθJA = 172 °C/W enables operation up to +85°C ambient with moderate PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | No Connection | Internally unconnected; must remain floating - no routing or grounding allowed |
| 2 | Inverting Input | High-impedance node for feedback network connection; sensitive to parasitic capacitance |
| 3 | Noninverting Input | High-impedance input for reference or signal source; requires matched trace length to Pin 2 |
| 4 | Negative Supply (V−) | Connects to −5 V or −15 V rail; decoupling capacitor required within 5 mm |
| 6 | Output | Capable of sourcing/sinking 100 mA into 100 Ω load; layout must minimize inductance |
| 7 | Positive Supply (V+) | Connects to +5 V or +15 V rail; separate 0.1 μF ceramic + 4.7 μF tantalum decoupling recommended |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-feedback topology with CFA-like slew | Enables use in traditional op-amp configurations (integrators, I-to-V) while achieving 4100 V/μs transient response |
| Specified for ±5 V and ±15 V operation | Supports both battery-powered portable video gear and industrial ±15 V analog signal chains without redesign |
| Low differential gain/phase error | 0.01%/0.02° ensures color fidelity and timing stability in SD/HD/3G-SDI broadcast equipment |
| High open-loop gain (85 dB) | Maintains <0.1% closed-loop gain error at AV = +10 with 1 kΩ load, critical for precision gain blocks |
| Stable at noise gain ≥ +2 | Eliminates need for external compensation in most video gain-of-two driver applications |
Applications
| Professional Video Camera Signal Chain | HDSL/ADSL Line Driver |
|---|---|
Use Scenario: Amplifying RGB/YUV baseband video signals before HDMI encoder or analog output stage in 4K-capable broadcast cameras. IC Role / Device Role / Timing Role: High-fidelity buffer and gain stage preserving rise/fall time <2 ns and minimizing interlace jitter. Use Value: 0.01% differential gain error and 220 MHz −3 dB bandwidth maintain EBU R128 loudness compliance and SMPTE color bar accuracy. | Use Scenario: Driving twisted-pair telephone lines in DSLAM line cards for upstream/downstream data transmission. IC Role / Device Role / Timing Role: High-current line driver with fast settling to support QAM64/QAM256 symbol rates up to 12 MHz. Use Value: ±100 mA output current and 4100 V/μs slew rate enable clean 14-bit DAC output reconstruction over 100 m loops. |
| Laser Diode Driver (Pulsed) | HDTV Video Distribution Amplifier |
Use Scenario: Generating precise current pulses for pulsed laser diodes in LIDAR or medical diagnostics systems. IC Role / Device Role / Timing Role: Fast-settling transconductance amplifier converting TTL logic edges into controlled optical pulses. Use Value: 42 ns 0.1% settling time (AV = −1) and low overshoot (<2%) ensure accurate pulse width control at 10–50 MHz repetition rates. | Use Scenario: Splitting and amplifying HD-SDI signals to multiple monitors or recording devices in studio control rooms. IC Role / Device Role / Timing Role: Impedance-matched distribution amplifier with 75 Ω input/output termination and flat group delay. Use Value: 220 MHz −3 dB bandwidth and 0.02° differential phase preserve 1080p60 eye diagram integrity across all outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7171AIM/NOPB | Higher precision: 1 mV max VOS, 16 ns settling (0.1%), 160 MHz unity-gain bandwidth | Better suited for DC-coupled instrumentation where offset drift dominates error budget | Select LM7171AIM/NOPB when VOS < 1 mV and settling < 20 ns are mandatory; LM7171BIM/NOPB preferred for cost-sensitive video drivers |
| THS3201DGN | Current-feedback architecture; 4300 V/μs slew, 1.8 GHz bandwidth, but unstable below G = +3 and incompatible with capacitive feedback | Requires redesign for integrator, photodiode, or I-to-V topologies due to low-Z inverting input | Choose THS3201DGN only for pure high-gain, AC-coupled, non-inverting video paths where layout allows strict CFA layout rules |
Compared with LM7171AIM/NOPB and THS3201DGN, LM7171BIM/NOPB offers the best balance of voltage-feedback design flexibility, 200 MHz bandwidth, and production-ready cost for broadcast video and DSL line drivers - without requiring layout-level CFA compensation or premium offset trimming.
Availability
LM7171BIM/NOPB is available at Aetrix Electronics and suitable for professional video camera signal chains, HDSL/ADSL line driver modules, and laser diode pulsed driver designs requiring stable component supply and long-term manufacturability.
Supply support for LM7171BIM/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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The LM7171 product line was designed specifically for high-fidelity, high-speed analog signal conditioning in broadcast video, telecom line interfaces, and precision pulse generation - prioritizing slew rate, output drive, and differential linearity over ultra-low noise or rail-to-rail operation.
FAQ
What supply voltages does the LM7171BIM/NOPB support?
The LM7171BIM/NOPB is fully specified for operation on ±5 V and ±15 V dual supplies. It supports total supply ranges from 5.5 V to 36 V, enabling use in both portable 5 V systems and legacy ±15 V industrial signal chains. At ±5 V, it delivers 950 V/μs slew rate and 125 MHz unity-gain bandwidth; at ±15 V, it achieves 4100 V/μs and 200 MHz - making LM7171BIM/NOPB adaptable across multiple power domains without circuit redesign.
Is the LM7171BIM/NOPB stable in unity-gain configuration?
No, the LM7171BIM/NOPB is not unity-gain stable. It is explicitly characterized and guaranteed stable for noise gains ≥ +2 (i.e., minimum closed-loop gain of +2 V/V or −1 V/V). Attempting unity-gain operation risks oscillation due to insufficient phase margin. For unity-gain applications, consider alternatives like OPA695 or THS3091, or add external compensation per TI's Application Report SLOA058.
What is the maximum output current capability of the LM7171BIM/NOPB?
The LM7171BIM/NOPB delivers ±100 mA of continuous linear output current into a 100 Ω load at ±15 V supplies, with short-circuit current up to +140 mA / −135 mA. This enables direct driving of 75 Ω video lines (with series termination), transformer primaries, or laser diode anodes/cathodes without external boost transistors - a key advantage over general-purpose op-amps limited to ±20 mA.
How does the LM7171BIM/NOPB compare to the LM7171AIM/NOPB in performance?
The LM7171BIM/NOPB and LM7171AIM/NOPB share identical pinout, package, and core architecture, but differ in grade-specification: LM7171AIM/NOPB guarantees tighter input offset voltage (1 mV max vs. 3 mV max), faster 0.1% settling (16 ns vs. 42 ns), and higher unity-gain bandwidth (160 MHz vs. 200 MHz). LM7171BIM/NOPB trades minor DC precision for broader small-signal bandwidth - making it optimal for AC-coupled video and pulse applications where speed outweighs offset sensitivity.
Can the LM7171BIM/NOPB be used in photodiode transimpedance amplifiers?
Yes, the LM7171BIM/NOPB is suitable for photodiode TIA applications due to its true voltage-feedback topology, high input impedance at both terminals, and absence of CFA-style low-Z inverting input limitations. Unlike current-feedback amplifiers, it supports stable operation with feedback capacitors required for bandwidth limiting and noise optimization - confirmed by TI's Application Report SLOA058 and Layout Guide SLVA727.
LM7171BIM/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
LM7171BIM/NOPB FAQ
1.How can I place an order for LM7171BIM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM7171BIM/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 LM7171BIM/NOPB reliable?
The price and inventory of LM7171BIM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM7171BIM/NOPB is usually 5 days.
3.What payment methods are accepted for LM7171BIM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM7171BIM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM7171BIM/NOPB?
LM7171BIM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM7171BIM/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 LM7171BIM/NOPB?
For technical support, including LM7171BIM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM7171BIM/NOPB requirements.
6.How does Aetrix verify that LM7171BIM/NOPB is sourced from the original manufacturer or authorized distributors?
All LM7171BIM/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 LM7171BIM/NOPB meets industry standards.
7.What is the process for return or replacement of LM7171BIM/NOPB?
All LM7171BIM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM7171BIM/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 LM7171BIM/NOPB part is unused and in its original packaging.
Return procedure for LM7171BIM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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