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Analog Devices Inc. LT1230CN#PBF
- Part No.:
- LT1230CN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1230CN#PBF.pdf
- Description:
- IC OPAMP CFA 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,764
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Product details
Overview
LT1230CN#PBF from Analog Devices (formerly Linear Technology) is a quad 100MHz current feedback amplifier in a 14-lead plastic DIP package, delivering 30mA output drive, 1000V/µs slew rate, and ±2V to ±15V supply operation. It serves as a high-speed video buffer, RGB amplifier, and cable driver in instrumentation and test equipment.
For engineers reviewing the LT1230CN#PBF datasheet, LT1230CN#PBF pinout, LT1230CN#PBF application, or LT1230CN#PBF equivalent, key selection criteria include closed-loop bandwidth stability across gains ≥2, differential gain/phase performance (0.04%/0.1° at 150Ω), input common-mode range within 1.5V of supplies, and thermal-limited power dissipation in plastic DIP packaging.
Technical Context
The LT1230CN#PBF employs a current feedback architecture with high-impedance inputs (25MΩ, 3pF) and low-impedance outputs optimized for driving 75Ω or 150Ω cables. Its transresistance gain (100–200kΩ) and input bias current mismatch (±10µA typical) define its closed-loop response under varying feedback resistor values.
Bandwidth scales with supply voltage and feedback resistance: at ±15V with RF = 750Ω and RL = 100Ω, small-signal bandwidth reaches 100MHz; peaking is controlled via RF selection and optional inverting-input capacitance (e.g., 2200pF boosts 100× gain bandwidth from 10MHz to 17MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 100MHz at ±15V, RF = 750Ω, RL = 100Ω - enables full NTSC/PAL video signal fidelity without gain-dependent roll-off |
| Slew Rate | 2500V/µs (overdriven inverting mode) - supports fast transient response in pulse-amplification applications |
| Output Drive Current | 30mA continuous - sufficient to drive double-terminated 75Ω video cables without external buffers |
| Differential Gain / Phase | 0.04% / 0.1° at 150Ω load - meets broadcast-grade video linearity requirements per NTSC composite standard |
| Input Common-Mode Range | Within 1.5V of either supply rail - allows direct interfacing with DC-coupled video sources and level-shifted logic |
| Supply Voltage Range | ±2V to ±15V (4V–30V total) - supports single-supply (5V, 12V) and dual-supply (±5V, ±12V, ±15V) configurations |
| Quiescent Current | 6mA per amplifier (11mA max over temp) - enables four-channel operation within 44mA total at room temperature |
Pinout & Package
LT1230CN#PBF is housed in a 14-lead plastic DIP (N package) with 0.300-inch width, JEDEC MS-001 compliant footprint, θJA = 70°C/W, and maximum junction temperature of 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives low-impedance loads directly; requires 750Ω feedback for stable 100MHz operation |
| 2 | –IN A | Inverting input of Amp A - sensitive to stray capacitance; must be routed with minimal stub length to avoid peaking |
| 3 | +IN A | Non-inverting input of Amp A - 25MΩ input impedance avoids loading source; accepts DC-coupled video signals |
| 4 | +IN B | Non-inverting input of Amp B - electrically isolated from other amplifiers; crosstalk <65dB at 10MHz |
| 5 | –IN B | Inverting input of Amp B - shares no internal nodes with Amp A/C/D; layout separation minimizes inter-channel coupling |
| 6 | OUT B | Amplifier B output - identical drive capability to OUT A; supports independent gain-setting resistors |
| 7 | OUT C | Amplifier C output - fully independent channel; usable for RGB triple-output or multi-path signal conditioning |
| 8 | V– | Negative supply rail - must be decoupled with ≥0.1µF ceramic + 4.7µF tantalum near pin |
| 9 | –IN D | Inverting input of Amp D - referenced to V–; input bias current drift ≤10µA/V over supply mismatch |
| 10 | OUT D | Amplifier D output - capable of 0.1° differential phase error at 150Ω - critical for sync-pulse integrity |
| 11 | +IN D | Non-inverting input of Amp D - high CMRR (55–69dB) maintains accuracy despite supply ripple |
| 12 | +IN C | Non-inverting input of Amp C - supports DC-biasing networks for single-supply video amplification |
| 13 | –IN C | Inverting input of Amp C - compatible with resistor-based gain setting (RG = (G−1)×RF) |
| 14 | V+ | Positive supply rail - accepts up to ±15V; supply rejection ratio ≥60dB ensures noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Current Feedback Architecture | Maintains 100MHz bandwidth across closed-loop gains of 2–100 - eliminates gain-bandwidth trade-off typical of voltage-feedback op amps |
| High Input Impedance | 25MΩ || 3pF - prevents loading of high-Z sources (e.g., passive filters, sensor outputs) even with power off |
| Output Swing Capability | Within 0.8V of rails at ±15V - delivers ±13.5V swing into 400Ω, enabling full-scale video signal transmission |
| Low Distortion at High Frequency | THD <0.01% at 1MHz, 2VRMS - preserves signal integrity in test equipment and precision analog front-ends |
| Quad Channel Isolation | Crosstalk <65dB at 10MHz between adjacent amplifiers - enables simultaneous RGB or multi-channel video processing |
Applications
| Video Instrumentation Amplifiers | Cable Drivers |
|---|---|
Use Scenario: Amplifying NTSC/PAL composite video signals in oscilloscope front-ends and waveform analyzers. IC Role / Device Role / Timing Role: Buffer and level-shift video signals while preserving sync pulse timing and luminance/chrominance fidelity. Use Value: 0.04% differential gain and 0.1° differential phase ensure color accuracy and minimal hue shift across full 4.2MHz video bandwidth. | Use Scenario: Driving 75Ω coaxial cables in broadcast routing switchers and video distribution amplifiers. IC Role / Device Role / Timing Role: Active termination and signal regeneration for long-haul analog video transmission. Use Value: 30mA output drive sustains 2VP-P signal integrity over 100m cable runs without external boost stages. |
| RGB Amplifiers | Test Equipment Amplifiers |
Use Scenario: Simultaneous amplification of red, green, and blue component video signals in professional monitors and projectors. IC Role / Device Role / Timing Role: Quad-channel matched-gain amplifier providing synchronized RGB signal paths with <1ns inter-channel skew. Use Value: Independent amplifier sections with <65dB crosstalk enable pixel-accurate color reproduction without cross-color artifacts. | Use Scenario: Fast pulse amplification and signal conditioning in automated test equipment (ATE) for semiconductor validation. IC Role / Device Role / Timing Role: High-slew-rate gain stage for generating calibrated step responses and square-wave stimuli. Use Value: 2500V/µs slew rate and 45ns 0.1% settling time support sub-10ns edge fidelity required for high-speed digital IC testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1229CN8#PBF | Dual-channel version in 8-pin PDIP; identical electrical specs except for channel count and pinout | Used where only two high-speed amplifiers are needed; occupies less PCB area but lacks quad integration | Select when board space is constrained and system requires only two channels - avoids unused amplifiers and simplifies layout |
| LT1396CS#PBF | Quad 400MHz CFA in SO-16; higher bandwidth but lower output drive (20mA), wider supply range (±1.5V to ±18V), and different pinout | Better suited for >200MHz RF/IF signal chains; not optimized for 150Ω video loads or differential phase linearity | Choose for ultra-high-frequency applications beyond 100MHz where video-grade linearity is secondary to raw speed |
Compared with LT1229CN8#PBF, LT1230CN#PBF provides two additional independent amplifiers in the same package footprint class, enabling RGB or multi-signal parallel processing without increasing board area; versus LT1396CS#PBF, it trades 300MHz bandwidth for superior video-specific linearity and 50% higher output current - making it preferable for broadcast and instrumentation use cases.
Availability
LT1230CN#PBF is available at Aetrix Electronics and suitable for video instrumentation, cable driving, RGB signal conditioning, and test equipment applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1230CN#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT1230CN#PBF belongs to Linear Technology's legacy current feedback amplifier product line, engineered specifically for high-fidelity video signal processing, cable driving, and wideband instrumentation where gain-flatness, low distortion, and fast settling are critical.
FAQ
What is the maximum operating temperature range for the LT1230CN#PBF?
The LT1230CN#PBF is rated for commercial temperature operation from 0°C to 70°C. Its plastic DIP package has a maximum junction temperature of 150°C and thermal resistance θJA = 70°C/W, meaning ambient temperature must remain below ~59.7°C at ±12V/2VP-P into 150Ω to stay within safe limits - verified in the LT1229/LT1230 datasheet Absolute Maximum Ratings table.
Can the LT1230CN#PBF operate from a single 5V supply?
Yes, the LT1230CN#PBF supports single-supply operation down to +4V total (e.g., +5V with ground). Application Note TA11 demonstrates a single 5V composite video driver using DC biasing networks to maintain sync pulse headroom; input common-mode range extends to within 1.5V of either rail, enabling proper input/output swing with appropriate level-shifting.
Does the LT1230CN#PBF require external compensation for stability?
No external compensation is required for unity-gain-stable operation, but feedback resistor value critically affects stability. The LT1230CN#PBF requires resistive feedback (e.g., 750Ω) for optimal 100MHz bandwidth; capacitive loading on the inverting input induces peaking, so layout must minimize stray capacitance - confirmed by TPC10 and TA05 in the datasheet.
How does the LT1230CN#PBF compare to voltage-feedback op amps in video applications?
The LT1230CN#PBF's current feedback architecture maintains constant 100MHz bandwidth across gains of 2–100, unlike voltage-feedback op amps whose bandwidth drops inversely with gain. This eliminates gain-bandwidth trade-offs in RGB gain blocks and ensures consistent differential phase performance - validated by TPC01–TPC09 frequency response curves.
Is the LT1230CN#PBF pin-compatible with other quad amplifiers like the LM324?
No, the LT1230CN#PBF is not pin-compatible with LM324 or other general-purpose quad op amps. Its 14-pin DIP pinout (OUT A, –IN A, +IN A, +IN B, –IN B, OUT B, OUT C, V–, –IN D, OUT D, +IN D, +IN C, –IN C, V+) is unique to Linear's current feedback family and differs fundamentally in function, speed, and supply requirements.
LT1230CN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 700V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- 100 MHz
- Current - Input Bias:
- 10 µA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 6mA (x4 Channels)
- Current - Output / Channel:
- 125 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LT1230CN#PBF FAQ
1.How can I place an order for LT1230CN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1230CN#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 LT1230CN#PBF reliable?
The price and inventory of LT1230CN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1230CN#PBF is usually 5 days.
3.What payment methods are accepted for LT1230CN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1230CN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1230CN#PBF?
LT1230CN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1230CN#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 LT1230CN#PBF?
For technical support, including LT1230CN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1230CN#PBF requirements.
6.How does Aetrix verify that LT1230CN#PBF is sourced from the original manufacturer or authorized distributors?
All LT1230CN#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 LT1230CN#PBF meets industry standards.
7.What is the process for return or replacement of LT1230CN#PBF?
All LT1230CN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1230CN#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 LT1230CN#PBF part is unused and in its original packaging.
Return procedure for LT1230CN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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