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Analog Devices Inc. LT1190CN8#PBF
- Part No.:
- LT1190CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1190CN8#PBF.pdf
- Description:
- IC AMP GENERAL PURPOSE 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:136
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Product details
Overview
LT1190CN8#PBF from Analog Devices (formerly Linear Technology) is a high-speed video operational amplifier optimized for ±5V and single 5V supply operation, delivering 450V/µs slew rate, 50MHz gain bandwidth, ±50mA output current, and 140ns settling time to 0.1%. It serves as a cable driver in composite video signal distribution systems with 75Ω termination support.
For engineers reviewing the LT1190CN8#PBF datasheet, LT1190CN8#PBF pinout, LT1190CN8#PBF application, or LT1190CN8#PBF equivalent, key selection criteria include full-power bandwidth (23.9MHz), differential gain/phase error (0.1%/0.06° at 1kΩ), shutdown functionality (Pin 5), and PDIP-8 package compatibility with legacy video routing designs.
Technical Context
The LT1190CN8#PBF employs a unity-gain-stable architecture with 75° phase margin and 50MHz GBW, enabling stable closed-loop configurations without external compensation. Its high open-loop gain (>10V/mV) and low input offset voltage (3–11mV) support precision DC-coupled video signal conditioning.
It integrates an active shutdown feature (Pin 5) that reduces supply current to 1.4–2.1mA while maintaining true high-impedance output (15kΩ || feedback network). The amplifier drives 75Ω double-terminated coaxial cables with <0.1% differential gain error and supports both inverting and noninverting topologies-though MUX applications require noninverting configuration to prevent signal feedthrough during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50MHz - Enables stable unity-gain operation up to 50MHz; supports wideband video amplification without peaking. |
| Slew Rate | 450V/µs - Ensures distortion-free reproduction of fast video transients (e.g., sync pulses, edge transitions). |
| Settling Time | 140ns to 0.1% - Critical for accurate pixel-level fidelity in SD/HD analog video systems with tight timing budgets. |
| Differential Gain/Phase Error | 0.1% / 0.06° at RL = 1kΩ - Meets NTSC/PAL broadcast-grade color fidelity requirements for composite video signals. |
| Output Current | ±50mA - Drives 75Ω double-terminated cable (150Ω total load) with 7.5VP-P swing on ±5V supplies. |
| Shutdown Supply Current | 1.4–2.1mA - Reduces power dissipation to ~15mW during inactive states, enabling low-power video multiplexing. |
| Input Voltage Range | –2.5V to +3.5V - Supports rail-to-rail input common-mode range under ±5V supplies for maximum dynamic headroom. |
| Operating Temperature | 0°C to +70°C - Qualified for commercial-grade video equipment including monitors, switchers, and distribution amplifiers. |
Pinout & Package
LT1190CN8#PBF is housed in an 8-lead plastic dual in-line package (PDIP), designated N8 per Linear Technology documentation. Pin spacing follows standard 0.300-inch DIP footprint with 0.100-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BAL (Pin 1 & 8) | Balance terminals | Internally connected to substrate bias node; must be tied together and bypassed to ground via 0.1µF ceramic capacitor for stability. |
| V+ (Pin 7) | Positive supply | Accepts +5V (single supply) or +5V (dual supply); requires local 0.1µF + 4.7µF bypassing for optimal settling performance. |
| V– (Pin 4) | Negative supply | Accepts 0V (single supply) or –5V (dual supply); serves as reference for shutdown control and output swing limits. |
| OUT (Pin 6) | Amplifier output | Delivers ±50mA into 100Ω; supports 75Ω series termination for cable driving; high-impedance in shutdown mode. |
| SHDN (Pin 5) | Shutdown control | Active-low: pulled to V– to disable output and reduce supply current; compatible with HC CMOS logic (0V/–5V). |
| –IN (Pin 2) | Inverting input | High-impedance node; sensitive to stray capacitance-requires low-value feedback resistor (≤1kΩ) and guard traces. |
| +IN (Pin 3) | Non-inverting input | DC-coupled input for video baseband signals; input common-mode range extends to ±2.5V under ±5V supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Video-optimized AC performance | 0.1% differential gain and 0.06° differential phase error at 3.58MHz (NTSC) enable broadcast-compliant composite video transmission. |
| True high-impedance shutdown | Output presents 15kΩ || feedback network impedance when disabled-prevents loading of shared video bus in MUX applications. |
| Single-supply 5V operation | Operates from +5V/0V rails with input range spanning –2.5V to +3.5V, simplifying integration into modern embedded video interfaces. |
| Full-power bandwidth | 23.9MHz at 6VP-P output enables distortion-free amplification of HD-ready analog video signals (e.g., VGA, component YPbPr). |
| Robust capacitive load drive | Stable with ≥50pF loads; isolation resistor (10Ω) recommended at inverting input to preserve phase margin when driving scope probes or unterminated cables. |
| Low-cost PDIP packaging | N8 package supports through-hole assembly and legacy PCB layouts-ideal for industrial video equipment requiring long-term manufacturability. |
Applications
| Composite Video Distribution | Video Multiplexer Systems |
|---|---|
|
Use Scenario: Routing NTSC/PAL signals from multiple sources (e.g., cameras, DVRs) to a single display or recording device. IC Role / Device Role / Timing Role: High-fidelity buffer and driver stage ensuring minimal color distortion and inter-symbol interference across 75Ω coaxial runs. Use Value: Maintains 0.1% differential gain and 0.06° phase accuracy over temperature, preserving chroma integrity in multi-source broadcast environments. |
Use Scenario: Selecting one of several video inputs onto a shared output line using digital control signals. IC Role / Device Role / Timing Role: Active video channel selector with hardware-controlled shutdown (Pin 5) enabling glitch-free switching between sources. Use Value: True high-impedance output during shutdown prevents crosstalk and signal corruption on the common bus-no external analog switches required. |
| Fast Pulse Amplification | Video Signal Conditioning |
|
Use Scenario: Amplifying TTL/CMOS sync pulses or test waveforms with sub-200ns rise/fall times in video timing generators. IC Role / Device Role / Timing Role: Wideband pulse amplifier with 1.9ns small-signal rise time (10%–90%) and 175ns large-signal rise time (20%–80%). Use Value: Preserves edge fidelity and minimizes jitter accumulation in genlock and frame synchronization circuits. |
Use Scenario: DC-coupled gain adjustment and level shifting of RGB or YPbPr component video signals prior to DAC or display interface. IC Role / Device Role / Timing Role: Precision op-amp with 10V/mV minimum open-loop gain and 3–11mV input offset voltage for calibrated signal scaling. Use Value: Enables accurate black-level clamping and gamma correction without post-amplification trimming components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1357CS8#PBF | Higher slew rate (800V/µs), lower supply current (5mA max), SO-8 only; no shutdown pin. | Lacks integrated shutdown-requires external analog switch for MUX use; better suited for fixed-gain, high-speed pulse applications. | Select when absolute speed > power control; verify layout compatibility with SO-8 thermal profile (θJA = 150°C/W). |
| LMH6629MA/NOPB | Lower input offset (0.2mV typ), higher GBW (1.5GHz), but higher quiescent current (12.5mA); no native shutdown function. | Optimized for RF/video ADC drivers-not ideal for legacy 75Ω cable driving due to different output stage architecture. | Prefer for new designs targeting ultra-low noise and GHz-range bandwidth; avoid where PDIP footprint or shutdown is mandatory. |
Compared with LT1190CN8#PBF, LT1357CS8#PBF offers superior speed but sacrifices MUX capability and through-hole compatibility, while LMH6629MA/NOPB delivers precision and bandwidth at the cost of power efficiency and legacy system integration.
Availability
LT1190CN8#PBF is available at Aetrix Electronics and suitable for composite video distribution, broadcast equipment, industrial video monitoring, and legacy video test instrumentation requiring stable component supply and long-term obsolescence management.
Supply support for LT1190CN8#PBF 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
Analog Devices acquired Linear Technology in 2017 and maintains full technical and manufacturing continuity for legacy Linear products including the LT1190 family.
The LT1190 product line was designed specifically for high-fidelity analog video signal routing and conditioning in broadcast, medical imaging, and industrial vision systems-emphasizing differential gain/phase accuracy, cable drive strength, and robust shutdown control.
FAQ
What is the maximum full-power bandwidth of the LT1190CN8#PBF?
The LT1190CN8#PBF achieves a typical full-power bandwidth of 23.9MHz at 6VP-P output under ±5V supplies. This value is derived from its 450V/µs slew rate and ensures distortion-free amplification of high-frequency video content such as horizontal sync edges and chroma subcarriers in NTSC/PAL systems. Performance remains stable across the 0°C to +70°C operating range.
Can the LT1190CN8#PBF operate from a single 5V supply?
Yes, the LT1190CN8#PBF supports single 5V supply operation with input common-mode range extending from –2.5V to +3.5V and output swing reaching ±3.7V into 1kΩ. This allows direct interfacing with 3.3V/5V logic-controlled video sources and sinks without level-shifting circuitry-provided proper bypassing (0.1µF + 4.7µF) is implemented at V+ and V– pins.
How does the shutdown feature of the LT1190CN8#PBF work?
The LT1190CN8#PBF enters shutdown when Pin 5 (SHDN) is pulled to V–, reducing supply current to 1.4–2.1mA and placing the output in a true high-impedance state (15kΩ || feedback network). Turn-off time is 400ns into 1kΩ load; turn-on time is 100ns. For reliable operation, SHDN must remain ≤ V– + 0.4V at elevated temperatures to prevent increased quiescent current.
What are the recommended bypassing practices for the LT1190CN8#PBF?
Linear Technology specifies a 0.1µF ceramic disc capacitor in parallel with a 4.7µF tantalum capacitor placed within 1/2 inch of the LT1190CN8#PBF's V+ and V– pins. This combination reduces settling time from 4.244µs (with 0.1µF only) to 163ns. Avoid sockets and minimize supply lead inductance-especially critical for achieving specified 140ns 0.1% settling performance.
Is the LT1190CN8#PBF pin-compatible with other members of the LT1190 family?
Yes, the LT1190CN8#PBF shares identical pinout and footprint with LT1190CS8#PBF (SO-8) and obsolete LT1190CJ8#PBF (CERDIP). All variants use the same BAL/V+/OUT/SHDN/–IN/+IN/V–/BAL assignment. However, thermal characteristics differ: N8 has θJA = 100°C/W, while S8 is 150°C/W-requiring derating verification in high-density layouts.
LT1190CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- General Purpose
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- -
- Slew Rate:
- 450V/µs
- Current - Supply:
- 32 mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply, Single/Dual (±):
- 4.75V ~ 16V, ±2.38V ~ 8V
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-PDIP
LT1190CN8#PBF FAQ
1.How can I place an order for LT1190CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1190CN8#PBF 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 LT1190CN8#PBF reliable?
The price and inventory of LT1190CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1190CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1190CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1190CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1190CN8#PBF?
LT1190CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1190CN8#PBF 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 LT1190CN8#PBF?
For technical support, including LT1190CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1190CN8#PBF requirements.
6.How does Aetrix verify that LT1190CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1190CN8#PBF 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 LT1190CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1190CN8#PBF?
All LT1190CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1190CN8#PBF, 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 LT1190CN8#PBF part is unused and in its original packaging.
Return procedure for LT1190CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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