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Analog Devices Inc. LT1365CS#PBF
- Part No.:
- LT1365CS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1365CS#PBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 4 CIRC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:414
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Product details
Overview
LT1365CS#PBF from Analog Devices (formerly Linear Technology) is a quad high-speed voltage-feedback operational amplifier with 70MHz gain bandwidth, 1000V/µs slew rate, and unity-gain stability. It delivers ±7.5V output swing into 150Ω with ±15V supplies and drives all capacitive loads without external compensation-making it ideal for video line drivers, active filters, and data acquisition front-ends.
For engineers reviewing the LT1365CS#PBF datasheet, LT1365CS#PBF pinout, LT1365CS#PBF application, or LT1365CS#PBF equivalent, key selection criteria include guaranteed 0.1% settling time of 50ns, differential gain/phase of 0.06%/0.04° at 3.58MHz, and operation across ±2.5V to ±15V supplies with ≤7.5mA per amplifier supply current.
Technical Context
The LT1365CS#PBF employs a proprietary voltage-feedback topology with matched high-impedance inputs and current-feedback–like slewing behavior. Its single-stage design enables fast settling and low distortion, while internal C-Load™ compensation ensures unconditional stability with any capacitive load-including coaxial cables and active filter stages.
It features complementary NPN/PNP input buffering, 500Ω input resistor-based transconductance generation, and bootstrapped RC compensation that dynamically adjusts phase margin based on load capacitance-enabling robust performance from unity gain to AV = –2 configurations across –40°C to 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 70MHz at ±15V - supports >10MHz closed-loop bandwidth in moderate-gain configurations. |
| Slew Rate | 1000V/µs at ±15V - enables full-scale 10V step response in <10ns with minimal slewing distortion. |
| Input Offset Voltage | 1.5mV max at ±15V - ensures DC accuracy in precision gain stages and instrumentation amplifiers. |
| Output Current | 50mA min into ±7.5V - drives 150Ω video loads or multiple parallel inputs without external buffers. |
| Settling Time | 50ns to 0.1% for 10V step - meets high-speed data acquisition timing budgets for 20MSPS+ systems. |
| Differential Gain/Phase | 0.06% / 0.04° at 3.58MHz, RL=150Ω - satisfies NTSC/PAL video fidelity requirements without post-correction. |
| Supply Current | 7.5mA max per amplifier - balances speed and power efficiency for multi-channel analog signal chains. |
Pinout & Package
LT1365CS#PBF is housed in a 16-lead plastic SO (S package), 0.150-inch narrow body, with JEDEC MS-012AC compliance. Thermal resistance θJA = 150°C/W enables operation up to 85°C ambient with standard PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of ±7.5V swing into 150Ω; internally compensated for direct cable driving. |
| 2 | –IN A | Inverting input A - high-impedance node with matched NPN/PNP biasing for low input offset current. |
| 3 | +IN A | Non-inverting input A - symmetrical to Pin 2; balanced source impedance recommended for DC accuracy. |
| 4 | +IN B | Non-inverting input B - electrically isolated from A channel; shares V+ and V– rails. |
| 5 | –IN B | Inverting input B - independent of A channel; supports dual-channel differential or independent gain stages. |
| 6 | OUT B | Amplifier B output - identical AC/DC specs to Pin 1; usable for dual-channel filtering or buffering. |
| 7 | OUT C | Amplifier C output - third independent channel; enables 3-channel active filter banks or multi-sensor conditioning. |
| 8 | V– | Negative supply rail - accepts –2.5V to –15V; must be decoupled with 0.01µF ceramic + 1µF tantalum. |
| 9 | NC | No connect - internal die pad; leave floating or tie to ground only if required by layout EMI mitigation. |
| 10 | NC | No connect - unused bond pad; no electrical function; avoid routing signals nearby. |
| 11 | –IN D | Inverting input D - fourth channel input; supports quad-channel synchronous sampling or multi-path processing. |
| 12 | OUT D | Amplifier D output - fully specified for 50mA drive and 50ns settling; enables 4-channel video reconstruction. |
| 13 | +IN D | Non-inverting input D - matches Pins 3 and 4; allows consistent biasing across all four channels. |
| 14 | +IN C | Non-inverting input C - fourth channel positive input; supports independent gain configuration per channel. |
| 15 | –IN C | Inverting input C - fourth channel negative input; maintains channel-to-channel isolation >100dB. |
| 16 | V+ | Positive supply rail - accepts +2.5V to +15V; requires low-ESR bypassing adjacent to pins 8 and 16. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ compensation | Stable with unlimited capacitive load - eliminates need for external isolation resistors in cable driver or ADC buffer applications. |
| Unity-gain stable | Operates reliably at AV = 1 without external compensation - simplifies design of voltage followers and active termination circuits. |
| Low input noise | 9nV/√Hz at 10kHz - preserves SNR in low-level sensor signal conditioning and medical front-ends. |
| High channel separation | 113dB at ±15V - prevents crosstalk between channels in multi-channel data acquisition or audio mixing. |
| Wide supply range | ±2.5V to ±15V operation - supports both low-voltage portable systems and industrial ±12V signal chains. |
Applications
| Video Line Driver | Active Filter Bank |
|---|---|
Use Scenario: Driving 75Ω coaxial video lines in broadcast equipment or CCTV encoders. IC Role / Device Role / Timing Role: Buffer amplifier with gain = 2, driving terminated 75Ω load at 3.58MHz (NTSC color subcarrier). Use Value: Delivers 0.06% differential gain and 0.04° differential phase error - meets SMPTE RP 168 specification without calibration. | Use Scenario: Implementing 4th-order Butterworth low-pass filtering in ultrasound beamforming ASIC interfaces. IC Role / Device Role / Timing Role: Quad-channel op amp configured as two 2-pole Sallen-Key sections per channel pair. Use Value: 70MHz GBW and 1000V/µs slew rate maintain filter group delay flatness up to 5MHz with <0.1dB passband ripple. |
| Data Acquisition Front-End | Instrumentation Amplifier Core |
Use Scenario: Multiplexed 16-bit ADC driver in automated test equipment requiring 0.1% settling in <60ns. IC Role / Device Role / Timing Role: Track-and-hold buffer with 50ns 0.1% settling time for 10V full-scale steps. Use Value: Enables 20MSPS effective sampling rate with <1LSB dynamic error - avoids pipeline latency penalties. | Use Scenario: Building a two-op-amp instrumentation amplifier for strain gauge readout in industrial weigh scales. IC Role / Device Role / Timing Role: Dual-amplifier section providing gain = 100, CMRR >84dB, and 1.5mV VOS maximum. Use Value: Achieves <0.01% linearity over 0–50mV input range without trimming - reduces calibration overhead. |
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 |
|---|---|---|---|
| LT1364CS8#PBF | Dual-channel version; identical specs per amplifier but only two channels in SO-8 package. | Used where board space limits or dual-channel count suffices - e.g., stereo audio preamps or dual-sensor interfaces. | Select when system requires only two high-speed amplifiers and SO-8 footprint compatibility is needed. |
| LT1813CS8#PBF | Lower supply current (3mA/amplifier), lower slew rate (700V/µs), reduced GBW (100MHz), optimized for ±5V operation. | Better suited for battery-powered portable instruments where power efficiency outweighs peak speed. | Choose for low-voltage, low-power designs needing <100MHz bandwidth but not 1000V/µs slew capability. |
Compared with LT1364CS8#PBF, LT1365CS#PBF provides double the channel count in the same SO-16 footprint and enables compact quad-channel signal paths; versus LT1813CS8#PBF, it trades 4mA higher supply current for 300V/µs higher slew rate and superior video fidelity metrics at 3.58MHz.
Availability
LT1365CS#PBF is available at Aetrix Electronics and suitable for video line driving, active filter implementation, and high-speed data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1365CS#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 ICs for precision and high-speed applications.
The LT1365CS#PBF belongs to Linear Technology's legacy high-speed op amp family, engineered specifically for demanding video, instrumentation, and data acquisition systems requiring wide bandwidth, fast settling, and unconditional capacitive-load stability.
FAQ
What is the maximum capacitive load the LT1365CS#PBF can drive without oscillation?
The LT1365CS#PBF is unconditionally stable with any capacitive load due to its integrated C-Load™ compensation architecture. It has been verified to remain stable with loads exceeding 10,000pF, including direct 75Ω coaxial cable driving. No external isolation resistor is required, though a series 75Ω resistor at the output improves pulse fidelity in video applications.
Does the LT1365CS#PBF support ±2.5V supply operation, and what are the key performance trade-offs?
Yes, the LT1365CS#PBF is fully specified for ±2.5V operation. At this supply, gain bandwidth drops to 40MHz (min), slew rate to ≥550V/µs, and output swing reduces to ±1.1V (positive rail) and ±0.5V (negative rail) into 1kΩ. Input offset voltage increases to 1.8mV max, making it suitable for low-voltage portable instrumentation where speed is secondary to power reduction.
How does the LT1365CS#PBF achieve 0.1% settling in 50ns while maintaining low distortion?
The LT1365CS#PBF achieves 50ns 0.1% settling via a single-stage voltage-feedback topology with high transconductance input and low-output-impedance complementary emitter-follower output stage. Its 1000V/µs slew rate and 70MHz GBW ensure minimal phase lag during large-signal transitions, while matched input transistor pairs minimize harmonic distortion - measured at –70dB THD at 1MHz with 2VP-P output.
Can the LT1365CS#PBF be used in inverting configurations with gain = –1, and what is the typical small-signal transient response?
Yes, the LT1365CS#PBF is fully characterized for inverting configurations including AV = –1. Typical small-signal transient response (100mV step) shows <2.6ns rise/fall time and <36% overshoot at ±15V supplies. The device maintains 0.1% settling in 55ns for 5V steps under ±5V supplies, confirming robust performance in inverting gain stages used in active filters and level-shifting circuits.
What thermal considerations apply to the LT1365CS#PBF in continuous 50mA output current operation?
At maximum 50mA output current into ±7.5V with ±15V supplies, power dissipation per amplifier reaches ~126mW. With θJA = 150°C/W, junction temperature rise is ~18.9°C above ambient. For continuous operation at 85°C ambient, TJ remains well below the 150°C absolute maximum - provided ≥1in² of 2oz copper is used on the V+ and V– pads for heat spreading.
LT1365CS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 1000V/µs
- Gain Bandwidth Product:
- 70 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 600 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 6.3mA (x4 Channels)
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LT1365CS#PBF FAQ
1.How can I place an order for LT1365CS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1365CS#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 LT1365CS#PBF reliable?
The price and inventory of LT1365CS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1365CS#PBF is usually 5 days.
3.What payment methods are accepted for LT1365CS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1365CS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1365CS#PBF?
LT1365CS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1365CS#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 LT1365CS#PBF?
For technical support, including LT1365CS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1365CS#PBF requirements.
6.How does Aetrix verify that LT1365CS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1365CS#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 LT1365CS#PBF meets industry standards.
7.What is the process for return or replacement of LT1365CS#PBF?
All LT1365CS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1365CS#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 LT1365CS#PBF part is unused and in its original packaging.
Return procedure for LT1365CS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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