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Texas Instruments LM6172IN/NOPB
- Part No.:
- LM6172IN/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LM6172IN/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:457
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Product details
Overview
LM6172IN/NOPB from Texas Instruments is a dual, high-speed, low-power, voltage-feedback operational amplifier optimized for video, communications, and precision analog signal conditioning. It delivers 100MHz unity-gain bandwidth, 3000V/μs slew rate, ±15V or ±5V operation, 50mA output current per channel, and 2.3mA supply current per channel - enabling high-fidelity NTSC/PAL amplification and ADC/DAC buffering in compact systems.
For engineers reviewing the LM6172IN/NOPB datasheet, LM6172IN/NOPB pinout, LM6172IN/NOPB application, or LM6172IN/NOPB equivalent, key selection criteria include its dual-channel voltage-feedback architecture, SOIC-8 package compatibility, ±5V/±15V dual-supply flexibility, 0.1% settling time of 65ns, and specified performance across −40°C to +85°C industrial temperature range.
Technical Context
The LM6172IN/NOPB employs a symmetrical Class AB input stage with triple-buffered output topology, delivering unity-gain stability without external compensation. Its slew rate is internally current-limited and scales with input differential voltage, enabling predictable large-signal response in gain configurations ≥ +1.
It features matched channel bandwidth (≤2MHz mismatch), low 12nV/√Hz input voltage noise at 10kHz, and robust 70dB CMRR up to 1MHz - supporting high-accuracy differential signal paths in ADSL drivers and scanner I-to-V converters where crosstalk and distortion must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 100MHz (D package) - supports stable closed-loop operation up to 100MHz with AV = +1, critical for video line drivers and broadband buffers |
| Slew rate | 3000V/μs (±15V) - enables clean 13VPP pulse reproduction with <65ns 0.1% settling, suitable for fast pulse amplifiers |
| Supply current | 4.6mA typical (±15V), 4.4mA typical (±5V) - dual-channel quiescent power of 138mW (±15V) or 46mW (±5V), ideal for portable video systems |
| Output current | 50mA/channel continuous (RL = 100Ω) - drives 75Ω video loads or ADC input capacitors without external boost |
| Input offset voltage | 0.4mV typical (±15V), 0.1mV typical (±5V) - ensures DC accuracy in precision I-to-V conversion and sensor signal chains |
| Harmonic distortion | HD2 = −88dBc, HD3 = −93dBc (fIN = 10kHz, ±15V) - meets broadcast-grade NTSC/PAL differential gain/phase specs (0.28%/0.6°) |
| Operating temperature | −40°C to +85°C - qualified for industrial embedded video and telecom infrastructure applications |
Pinout & Package
LM6172IN/NOPB is supplied in an 8-pin SOIC (D package), 4.9mm × 6mm body size, with standard JEDEC MS-012AC footprint and gull-wing leads. Thermal resistance RθJA = 172°C/W enables operation up to 85°C ambient without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | Low-impedance buffered output capable of ±13.2V swing into 1kΩ (±15V) or ±3.4V (±5V) |
| 1IN– | Channel 1 inverting input | Differential input node with 40MΩ common-mode resistance; requires matched trace routing for video gain stability |
| 1IN+ | Channel 1 noninverting input | High-impedance input referenced to VCM; used in unity-gain buffer or noninverting amplifier configurations |
| VCC– | Negative power supply | Accepts −15V or −5V; decoupling capacitor (0.1μF ceramic) required within 5mm of pin |
| 2IN+ | Channel 2 noninverting input | Independent second channel input; enables dual-path signal processing without cross-coupling degradation |
| 2IN– | Channel 2 inverting input | Matched to Channel 1 inputs; ≤2MHz bandwidth matching ensures synchronized video channel timing |
| 2OUT | Channel 2 output | Fully independent output with identical drive capability and settling behavior as Channel 1 |
| VCC+ | Positive power supply | Accepts +15V or +5V; shared rail design simplifies dual-supply layout for dual-channel operation |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-feedback topology | Easy-to-stabilize architecture requiring no external compensation for unity-gain operation - reduces BOM count vs current-feedback alternatives |
| High output drive | 50mA/channel into 100Ω enables direct 75Ω video termination and ADC input charging without external buffers |
| Low distortion | −88dBc HD2 / −93dBc HD3 at 10kHz ensures compliance with NTSC/PAL broadcast linearity requirements |
| Wide supply range | Operates from ±5V to ±15V - supports both portable video (±5V) and ultrasound/ADSL (±15V) platforms with same footprint |
| Industrial temperature grade | Specified over −40°C to +85°C - validated for use in uncooled multimedia broadcast encoders and industrial scanners |
Applications
| Scanner I-to-V Converters | ADSL/HDSL Line Drivers |
|---|---|
Use Scenario: Converting photodiode current from high-resolution document scanners into precise voltage signals for digitization. IC Role / Device Role / Timing Role: Dual-channel transimpedance amplifier with matched gain and bandwidth across channels for simultaneous RGB line scanning. Use Value: 100MHz bandwidth and 65ns 0.1% settling ensure accurate capture of fast-moving scan lines without ghosting or edge smearing. | Use Scenario: Driving twisted-pair telephone lines in asymmetric digital subscriber line (ADSL) modems and repeaters. IC Role / Device Role / Timing Role: High-output-current line driver providing differential signaling with low harmonic distortion for upstream/downstream data transmission. Use Value: 50mA output current and −88dBc HD2 enable full-duplex 8-MHz DSL spectrum compliance while maintaining SNR > 60dB. |
| NTSC/PAL Video Amplifiers | ADC/DAC Buffering |
Use Scenario: Amplifying composite video signals in broadcast monitors, set-top boxes, and video switchers. IC Role / Device Role / Timing Role: Unity-gain stable video buffer driving 75Ω coaxial cables with minimal group delay variation across 0–5.5MHz luminance band. Use Value: 0.28% differential gain and 0.6° differential phase error preserve color fidelity and sync integrity in analog video distribution. | Use Scenario: Isolating high-speed analog-to-digital and digital-to-analog converters from source/load impedance mismatches. IC Role / Device Role / Timing Role: Low-noise, fast-settling buffer between precision DAC outputs and ADC inputs in data acquisition systems. Use Value: 12nV/√Hz input noise and 65ns 0.1% settling support 14-bit+ resolution sampling at ≥1 MSPS without aperture jitter penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM6171N/NOPB | Single-channel version; identical electrical specs except single output and 8-pin PDIP-only packaging | Used where only one high-speed amplifier is needed; lacks dual-channel integration for space-constrained designs | Select when board area allows discrete placement and dual-channel correlation is not required |
| THS3201DR | Current-feedback architecture; 3750V/μs slew rate but requires external compensation; higher supply current (12mA) | Better for ultra-high-speed (>200MHz) applications but less stable at low gains and more layout-sensitive | Prefer for >150MHz closed-loop bandwidth needs where THS3201's CFB advantages outweigh added design complexity |
Compared with LM6171N/NOPB, LM6172IN/NOPB provides dual-channel integration in SOIC-8, reducing PCB area by ~40%; versus THS3201DR, it offers simpler voltage-feedback stability and lower power, trading peak speed for ease of use in 100MHz-class video and comms systems.
Availability
LM6172IN/NOPB is available at Aetrix Electronics and suitable for NTSC/PAL video amplifiers, ADSL line drivers, and scanner I-to-V converters requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LM6172IN/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 LM6172IN/NOPB belongs to TI's high-speed voltage-feedback op-amp product line, designed specifically for demanding video, communications, and instrumentation applications where bandwidth, slew rate, and low distortion must coexist with low power and dual-channel integration.
FAQ
What supply voltages does the LM6172IN/NOPB support?
The LM6172IN/NOPB operates from ±5V to ±15V dual supplies. At ±15V, it delivers 100MHz bandwidth and 3000V/μs slew rate; at ±5V, bandwidth reduces to 70MHz and slew rate to 750V/μs. Both configurations maintain 0.1% settling in ≤72ns and are fully specified over −40°C to +85°C ambient temperature.
Is the LM6172IN/NOPB unity-gain stable?
Yes, the LM6172IN/NOPB is unity-gain stable without external compensation. Its voltage-feedback architecture and internal compensation network ensure stable operation with closed-loop gains of +1, −1, or higher. This eliminates the need for external feedback capacitors in most buffer and inverting amplifier configurations, simplifying layout and reducing component count.
What is the maximum capacitive load the LM6172IN/NOPB can drive?
The LM6172IN/NOPB can directly drive up to 100pF without instability, per TI's application guidance. For larger capacitive loads (e.g., >150pF), a series isolation resistor (typically 10–100Ω) placed between the output and load restores phase margin. The device's triple-buffered output stage minimizes interaction between load capacitance and open-loop gain peaking.
Does the LM6172IN/NOPB have ESD protection?
Yes, the LM6172IN/NOPB features integrated ESD protection rated to ±3000V HBM (Human Body Model) and ±300V Machine Model. This level of protection supports safe handling during automated assembly and operation in environments with moderate electrostatic risk, though external TVS diodes are still recommended for I/O pins in harsh industrial settings.
How does the LM6172IN/NOPB compare to the LM6171N/NOPB?
The LM6172IN/NOPB is the dual-channel counterpart to the single-channel LM6171N/NOPB, sharing identical per-channel specifications including 100MHz bandwidth, 3000V/μs slew rate, and ±5V/±15V operation. However, LM6172IN/NOPB integrates both amplifiers in a single SOIC-8 package, whereas LM6171N/NOPB uses PDIP-8 and supports only one channel - making LM6172IN/NOPB optimal for space-constrained dual-path designs.
LM6172IN/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 3000V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- 160 MHz
- Current - Input Bias:
- 1.2 µA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 4.6mA (x2 Channels)
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 5.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LM6172IN/NOPB FAQ
1.How can I place an order for LM6172IN/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM6172IN/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 LM6172IN/NOPB reliable?
The price and inventory of LM6172IN/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM6172IN/NOPB is usually 5 days.
3.What payment methods are accepted for LM6172IN/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM6172IN/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM6172IN/NOPB?
LM6172IN/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM6172IN/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 LM6172IN/NOPB?
For technical support, including LM6172IN/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM6172IN/NOPB requirements.
6.How does Aetrix verify that LM6172IN/NOPB is sourced from the original manufacturer or authorized distributors?
All LM6172IN/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 LM6172IN/NOPB meets industry standards.
7.What is the process for return or replacement of LM6172IN/NOPB?
All LM6172IN/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM6172IN/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 LM6172IN/NOPB part is unused and in its original packaging.
Return procedure for LM6172IN/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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