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Analog Devices Inc. LT1253CS8#PBF
- Part No.:
- LT1253CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1253CS8#PBF.pdf
- Description:
- IC AMP CURRENT FEEDBACK 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:795
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Product details
Overview
LT1253CS8#PBF from Analog Devices (formerly Linear Technology) is a dual current feedback video amplifier optimized for RGB and composite video signal conditioning. It delivers 90MHz bandwidth at ±5V, 0.03% differential gain error and 0.28° differential phase error into 150Ω, enabling high-fidelity analog video transmission in PC-to-workstation cable drivers and broadcast-grade video routing systems.
For engineers reviewing the LT1253CS8#PBF datasheet, LT1253CS8#PBF pinout, LT1253CS8#PBF application, or LT1253CS8#PBF equivalent, key selection criteria include its dual-channel isolation (>94dB at 5MHz), ±2V to ±14V supply flexibility, 250V/µs output slew rate at AV = 2, and SOIC-8 package compatibility with standard video layout practices.
Technical Context
The LT1253CS8#PBF implements a current feedback architecture with fully isolated amplifier channels sharing only V+ and V– supply pins-enabling >94dB channel separation at 5MHz. Its transimpedance gain stage and low-impedance output buffer support stable driving of 75Ω coaxial cables and reactive video filters without peaking or instability.
It operates across ±2V to ±14V dual supplies (or 4V to 28V single supply), with input common-mode range extending to within 1.5V of either rail and output swing reaching ±3.7V into 150Ω at ±5V. Thermal design requires attention: θJA = 150°C/W in SOIC-8, limiting max ambient to 59.7°C at ±12V/2VP-P into 150Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 90MHz at ±5V, AV = 2 - supports full NTSC/PAL baseband video with margin |
| Differential Gain Error | 0.03% at RL = 150Ω, VS = ±5V - meets broadcast video fidelity requirements |
| Differential Phase Error | 0.28° at RL = 150Ω, VS = ±5V - preserves chroma timing integrity |
| Output Slew Rate | 250V/µs at AV = 2 - enables fast settling for 1080i/720p sync pulses |
| Supply Current | 6–11mA per amplifier at ±5V - enables dual-channel operation under 22mA total |
| Channel Separation | 88dB at f = 10MHz - prevents crosstalk between RGB or Y/C channels |
| Input Offset Voltage | 5–15mV - ensures DC-coupled video baseline stability without clamping |
Pinout & Package
LT1253CS8#PBF is housed in an 8-lead plastic SOIC (S8) package, 3.9mm × 4.9mm body, 1.27mm lead pitch, JEDEC MS-012AC compliant. Pin 1 marked via laser dot or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | Current feedback node for Channel A; high-impedance, low-capacitance input |
| 2 | Noninverting Input A | High-Z input for Channel A; used in noninverting configurations with RG/RF network |
| 3 | Output A | Low-impedance, high-current output capable of ±3.7V swing into 150Ω |
| 4 | V– | Negative supply rail shared by both amplifiers; must be bypassed locally |
| 5 | V+ | Positive supply rail shared by both amplifiers; decoupling critical for AC performance |
| 6 | Output B | Independent Channel B output; electrically isolated from Output A except via supply rails |
| 7 | Noninverting Input B | Channel B noninverting input; identical electrical characteristics to Pin 2 |
| 8 | Inverting Input B | Channel B inverting input; matches Pin 1 in bias current and capacitance |
Key Features
| Feature | Design Value |
|---|---|
| Current Feedback Architecture | Enables flat frequency response up to 90MHz with minimal gain-dependent peaking |
| 94dB Channel Isolation | Prevents inter-channel interference in RGB or multi-signal video distribution |
| ±2V to ±14V Supply Range | Supports legacy ±5V, ±12V, and modern low-voltage video systems without redesign |
| 60mW Per Amplifier Power | Reduces thermal load in dense video interface PCBs; enables dual-channel operation at <125mW total |
| Industry-Standard Pinout | Direct drop-in replacement for LM13700, LMH6624, and other dual op-amps in existing layouts |
Applications
| RGB Video Distribution | Composite Video Routing |
|---|---|
Use Scenario: Driving RGBHV signals from GPU outputs to multiple monitors or projectors over 75Ω coaxial cables. IC Role / Device Role / Timing Role: Dual-channel voltage buffer and gain block; each amplifier handles one color channel (e.g., R+G, B+HV) with matched phase/gain. Use Value: Maintains 0.03% differential gain and 0.28° phase accuracy across all three channels, preserving color fidelity and edge sharpness at 1080p60. | Use Scenario: Re-amplifying NTSC/PAL composite video signals in broadcast switchers or CCTV matrix routers. IC Role / Device Role / Timing Role: Baseband video line driver with DC-coupled input and 75Ω output termination capability. Use Value: Delivers flat 0.1dB bandwidth to 30MHz and suppresses intermodulation distortion below –60dBc at 4.43MHz, ensuring clean chroma reproduction. |
| IF Stage Gain Block | Video Test Equipment Signal Path |
Use Scenario: Fixed-gain amplification in intermediate frequency stages of analog TV tuners or demodulators. IC Role / Device Role / Timing Role: High-linearity, wide-bandwidth gain stage operating at 30–50MHz IF frequencies with minimal group delay variation. Use Value: Achieves <0.01% THD at 10MHz and 2VP-P, preventing harmonic folding into adjacent channels during signal processing. | Use Scenario: Precision signal conditioning in video waveform analyzers, vectorscopes, and calibration sources. IC Role / Device Role / Timing Role: Reference-grade buffer and level shifter for generating calibrated test patterns with sub-mV offset control. Use Value: 5–15mV input offset and 125V/µs input slew rate enable accurate step-response measurement and rise-time validation per SMPTE RP 168. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6624MMX/NOPB | Higher bandwidth (1.8GHz), higher supply current (12.5mA/ch), no guaranteed differential phase spec | Better for high-speed ADC/DAC clock buffering; less validated for NTSC/PAL compliance | Choose LMH6624MMX/NOPB when >500MHz small-signal bandwidth is required and video fidelity specs are secondary |
| THS3202D | Lower power (4.5mA/ch), lower slew rate (3000V/µs), fixed ±5V supply only | Optimized for portable video gear; lacks ±2V–±14V flexibility and differential gain/phase characterization | Choose THS3202D for battery-powered applications where supply headroom and thermal envelope are constrained |
Compared with LT1253CS8#PBF, LMH6624MMX/NOPB trades proven NTSC video linearity for raw speed, while THS3202D sacrifices supply flexibility and broadcast-grade error specs for ultra-low power-making LT1253CS8#PBF the balanced choice for cost-sensitive, standards-compliant video infrastructure.
Availability
LT1253CS8#PBF is available at Aetrix Electronics and suitable for RGB video distribution, composite video routing, and IF stage gain blocks requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial and broadcast equipment manufacturing.
Supply support for LT1253CS8#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, Inc. (including former Linear Technology assets) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors for precision instrumentation, communications, and industrial systems.
The LT1253 product line was designed specifically for cost-effective, high-fidelity analog video signal conditioning-targeting PC graphics interfaces, broadcast routing hardware, and professional video equipment where differential gain/phase accuracy and channel isolation are critical.
FAQ
What is the maximum operating temperature for LT1253CS8#PBF?
The LT1253CS8#PBF has an operating temperature range of 0°C to 70°C. Its junction temperature must not exceed 150°C, and with θJA = 150°C/W in the SOIC-8 package, ambient temperature must be limited to ≤59.7°C under worst-case ±12V/2VP-P conditions into 150Ω. Derating is required above 70°C ambient.
Does LT1253CS8#PBF support single-supply operation?
Yes, LT1253CS8#PBF supports single-supply operation from 4V to 28V. The input common-mode range extends to within 1.5V of either rail, and output swing reaches ±3.7V into 150Ω at ±5V. For true single-supply use (e.g., +5V only), a DC-bias network is required at inputs and outputs to maintain proper operating point.
What is the channel separation specification for LT1253CS8#PBF?
The LT1253CS8#PBF provides ≥88dB channel separation at 10MHz and >94dB at 5MHz, measured between independent amplifier channels sharing only V+ and V– supply pins. This isolation enables simultaneous RGB signal handling without crosstalk-induced color bleeding or timing skew.
Can LT1253CS8#PBF drive 75Ω coaxial cable directly?
Yes, LT1253CS8#PBF is explicitly characterized for 75Ω loads: it delivers ±3.7V output swing into 150Ω (doubly terminated) and maintains 0.03% differential gain/0.28° phase error. For singly terminated 75Ω cables, external 75Ω series termination at the output is recommended to prevent reflections and preserve flat frequency response.
Is LT1253CS8#PBF pin-compatible with other dual op-amps?
Yes, LT1253CS8#PBF uses the industry-standard dual op-amp pinout in SOIC-8 (Pin 1 = –IN A, Pin 2 = +IN A, Pin 3 = OUT A, Pin 4 = V–, Pin 5 = V+, Pin 6 = OUT B, Pin 7 = +IN B, Pin 8 = –IN B). It is a direct physical replacement for LM13700, LMH6624, and many legacy dual video op-amps in existing PCB layouts.
LT1253CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Current Feedback
- Output Type:
- -
- Number of Circuits:
- 2
- -3db Bandwidth:
- 270 MHz
- Slew Rate:
- 250V/µs
- Current - Supply:
- 6 mA
- Current - Output / Channel:
- 55 mA
- Voltage - Supply, Single/Dual (±):
- 4V ~ 28V, ±2V ~ 14V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SO
LT1253CS8#PBF FAQ
1.How can I place an order for LT1253CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1253CS8#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 LT1253CS8#PBF reliable?
The price and inventory of LT1253CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1253CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1253CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1253CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1253CS8#PBF?
LT1253CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1253CS8#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 LT1253CS8#PBF?
For technical support, including LT1253CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1253CS8#PBF requirements.
6.How does Aetrix verify that LT1253CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1253CS8#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 LT1253CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1253CS8#PBF?
All LT1253CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1253CS8#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 LT1253CS8#PBF part is unused and in its original packaging.
Return procedure for LT1253CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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