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Analog Devices Inc. LT1190CJ8
- Part No.:
- LT1190CJ8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
LT1190CJ8.pdf
- Description:
- IC AMP GENERAL PURPOSE 8CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,557
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Product details
Overview
LT1190CJ8 from Analog Devices (formerly Linear Technology) is a high-speed video operational amplifier optimized for ±5V and single 5V supply operation, featuring 50MHz gain bandwidth, 450V/µs slew rate, ±50mA output current, 140ns settling time to 0.1%, and integrated output shutdown. It serves as a cable driver in composite video distribution systems with 75Ω termination support.
For engineers reviewing the LT1190CJ8 datasheet, LT1190CJ8 pinout, LT1190CJ8 application, or LT1190CJ8 equivalent, this page delivers verified specifications, CERDIP package details, video MUX timing behavior, shutdown-controlled multiplexing capability, and real-world differential gain/phase performance (0.1%/0.06° at RL = 1kΩ).
Technical Context
The LT1190CJ8 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 (>10 V/mV) and low input bias current (±0.5 µA) support precision signal conditioning in fast integrators and active filters.
It integrates a dedicated shutdown terminal (Pin 5) that reduces supply current to 1.4–2.1 mA while maintaining true high-impedance output (15 kΩ || feedback network). The amplifier drives 75Ω double-terminated coaxial cables with >30MHz –3dB bandwidth and supports noninverting MUX topologies to prevent feedthrough during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 50 MHz - Enables stable unity-gain operation with 75° phase margin; supports AV = 1 video buffer designs without peaking. |
| Slew Rate | 450 V/µs - Delivers full-swing 7.5 VP-P into 100Ω at ±5V supplies; ensures minimal distortion on NTSC/PAL video edges. |
| Settling Time | 140 ns to 0.1% - Measured on 3V step; critical for pixel-clock-aligned video sampling and fast DAC output settling. |
| Differential Gain/Phase | 0.1% / 0.06° at RL = 1kΩ - Meets broadcast-grade video fidelity requirements for RGB or Y/C signal paths. |
| Output Current | ±50 mA - Drives 75Ω double-terminated cable (150Ω load) with >20MHz full-power bandwidth and <1% droop. |
| Shutdown Current | 1.4–2.1 mA - Reduces quiescent power by >95% vs active mode (32–38 mA); enables low-power MUX channel gating. |
| Input Voltage Range | –2.5 V to +3.5 V - Compatible with ±5V supplies and rail-to-rail video signal swings; avoids inversion near supply rails. |
Pinout & Package
J8 package: 8-lead hermetic CERDIP (0.300" wide), narrow body, glass-sealed ceramic housing rated for 0°C to +70°C operation. Pin 1 identification via corner lead or notch; leads are tin-plated, solder-dip compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BAL) | Balanced offset null | Connects to external 1kΩ–10kΩ potentiometer wiper for input offset trimming; unused in standard video buffer configs. |
| 2 (+IN) | Noninverting input | High-impedance (5 MΩ common-mode) node; used for video signal injection in noninverting MUX or buffer applications. |
| 3 (–IN) | Inverting input | Low-impedance feedback node; requires ≤1kΩ feedback resistor to minimize stray capacitance effects at >10MHz. |
| 4 (V–) | Negative supply rail | Reference for shutdown logic; Pin 5 must be tied to V– to activate shutdown; supports ±5V or single 5V (V– = 0V) operation. |
| 5 (SHDN) | Shutdown control | Active-low enable; pulls output to high-Z state (15 kΩ || feedback) when driven to V–; tOFF = 400 ns into 1kΩ load. |
| 6 (OUT) | Amplifier output | Capable of ±50 mA drive; designed for direct 75Ω series termination or 75Ω shunt termination at remote end. |
| 7 (V+) | Positive supply rail | Accepts +5V (single supply) or +5V (dual supply); bypassing with 0.1 µF ceramic + 4.7 µF tantalum minimizes settling degradation. |
| 8 (BAL) | Balanced offset null | Second offset null terminal; used with Pin 1 for symmetrical trimming; left open in standard video driver use. |
Key Features
| Feature | Design Value |
|---|---|
| Video-optimized distortion performance | 0.1% differential gain / 0.06° differential phase error at 3.58 MHz NTSC - preserves color fidelity in analog video routing. |
| True high-impedance shutdown | 15 kΩ output impedance in shutdown state - prevents crosstalk in multi-channel video MUX systems sharing a common cable. |
| Single-supply 5V compatibility | Operates with V+ = 5V, V– = 0V and input common-mode range up to 3.5V - eliminates negative rail in embedded video interfaces. |
| 75° phase margin at unity gain | Stable operation without external compensation in AV = 1 video buffers - simplifies layout and reduces BOM count. |
| Fast turn-off for multiplexing | 400 ns output disable time (tOFF) into 1kΩ - enables sub-microsecond channel switching in broadcast switchers and test equipment. |
Applications
| Composite Video Distribution | RGB Video Routing Switch |
|---|---|
|
Use Scenario: Distributing NTSC/PAL baseband video across multiple monitors or recording devices using coaxial cable infrastructure. IC Role / Device Role / Timing Role: Cable driver amplifying and terminating 75Ω video signals; provides gain, drive strength, and reflection suppression. Use Value: Maintains 0.1% differential gain and 0.06° phase accuracy over 0°C–70°C, ensuring consistent color reproduction without recalibration. |
Use Scenario: Selecting one of multiple RGB sources (e.g., PC, camera, graphics card) for display on a single monitor. IC Role / Device Role / Timing Role: Noninverting video buffer per channel with Pin 5 shutdown enabling glitch-free source switching. Use Value: 400 ns turn-off time prevents video artifacts during channel transitions; high-Z output avoids loading inactive channels. |
| Fast Integrator for Pulse Processing | DAC Output Amplifier |
|
Use Scenario: Converting short-duration pulses (e.g., from photodiode or particle detector) into proportional voltage ramps. IC Role / Device Role / Timing Role: Precision integrator with low input bias (±0.5 µA) and high open-loop gain (>10 V/mV) for charge-to-voltage conversion. Use Value: 50 MHz GBW and 450 V/µs slew rate preserve pulse shape integrity for widths down to ~200 ns. |
Use Scenario: Converting current-mode DAC outputs (e.g., video DACs, waveform generators) into buffered voltage signals. IC Role / Device Role / Timing Role: I-to-V converter with ±50 mA output drive supporting low-impedance loads and fast settling (140 ns to 0.1%). Use Value: Eliminates need for external op-amp + discrete transistor stage; supports 75Ω back-termination for video DACs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1357CN8 | Higher slew rate (800 V/µs), lower supply current (5 mA max), but only 0.3% differential gain at 3.58 MHz. | Lacks integrated shutdown; not optimized for video MUX; better suited for pulse amplification than broadcast video. | Select LT1357CN8 only when >450 V/µs slew is required and video fidelity is secondary. |
| LT1360CS8 | Lower GBW (25 MHz), lower slew rate (600 V/µs), no shutdown pin; SO-8 only; 0.2% differential gain at 3.58 MHz. | Not pin-compatible; requires PCB redesign; lacks CERDIP packaging and temperature-rated shutdown behavior. | Choose LT1360CS8 only for cost-sensitive, non-shutdown, surface-mount designs where 25 MHz GBW suffices. |
Compared with LT1190CJ8, LT1357CN8 trades video accuracy for raw speed and lower power, while LT1360CS8 sacrifices shutdown functionality, package compatibility, and differential fidelity-making LT1190CJ8 uniquely suited for hermetically sealed, temperature-stable, multiplexed video systems.
Availability
LT1190CJ8 is available at Aetrix Electronics and suitable for composite video distribution, RGB routing switches, fast integrators, DAC output buffering, and test equipment requiring stable component supply across industrial temperature ranges.
Supply support for LT1190CJ8 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 engineered specifically for high-fidelity analog video signal conditioning-emphasizing differential gain/phase accuracy, cable drive capability, and shutdown-controlled multiplexing in broadcast, medical imaging, and instrumentation systems.
FAQ
What is the operating temperature range for the LT1190CJ8?
The LT1190CJ8 is specified for 0°C to +70°C ambient operation, matching the "C" grade designation. Its J8 CERDIP package provides hermetic sealing suitable for environments requiring long-term reliability without moisture ingress, unlike plastic SO-8 or PDIP variants.
Does the LT1190CJ8 support single-supply operation?
Yes, the LT1190CJ8 operates from a single +5V supply with V– = 0V. Its input common-mode range extends to +3.5V and output swings to within 0.3V of either rail under 1kΩ load, enabling direct interface with 3.3V or 5V logic-controlled video sources.
How does the shutdown feature of the LT1190CJ8 behave electrically?
When Pin 5 (SHDN) is pulled to V–, the LT1190CJ8 disables its output stage, reducing supply current to 1.4–2.1 mA and presenting a true high-impedance output (15 kΩ in parallel with external feedback resistors), preventing signal coupling in multiplexed video buses.
Can the LT1190CJ8 drive 75Ω coaxial cable directly?
Yes-the LT1190CJ8 is explicitly characterized for 75Ω double-terminated cable driving, delivering >30MHz –3dB bandwidth with 0.1% differential gain. Series-terminate with 75Ω at the amplifier output and shunt-terminate with 75Ω at the load to suppress reflections.
Is the LT1190CJ8 pin-compatible with other LT1190 variants like LT1190CN8 or LT1190CS8?
Yes-LT1190CJ8 shares identical pinout and electrical functionality with LT1190CN8 (PDIP) and LT1190CS8 (SO-8), including BAL, +IN, –IN, V–, SHDN, OUT, V+, and BAL pins in the same order. Only the package type and temperature rating differ.
LT1190CJ8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-CDIP (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-CERDIP
LT1190CJ8 FAQ
1.How can I place an order for LT1190CJ8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1190CJ8 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 LT1190CJ8 reliable?
The price and inventory of LT1190CJ8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1190CJ8 is usually 5 days.
3.What payment methods are accepted for LT1190CJ8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1190CJ8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1190CJ8?
LT1190CJ8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1190CJ8 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 LT1190CJ8?
For technical support, including LT1190CJ8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1190CJ8 requirements.
6.How does Aetrix verify that LT1190CJ8 is sourced from the original manufacturer or authorized distributors?
All LT1190CJ8 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 LT1190CJ8 meets industry standards.
7.What is the process for return or replacement of LT1190CJ8?
All LT1190CJ8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1190CJ8, 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 LT1190CJ8 part is unused and in its original packaging.
Return procedure for LT1190CJ8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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