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Analog Devices Inc. LT1365CS#TRPBF
- Part No.:
- LT1365CS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1365CS#TRPBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 4 CIRC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,738
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Product details
Overview
LT1365CS#TRPBF from Analog Devices (formerly Linear Technology) is a quad high-speed voltage-feedback operational amplifier optimized for data acquisition, video buffering, and cable driving. It delivers 70MHz gain bandwidth, 1000V/µs slew rate, ±7.5V output swing into 150Ω at ±15V supplies, 9nV/√Hz input noise, and unity-gain stability with any capacitive load.
For engineers reviewing the LT1365CS#TRPBF datasheet, LT1365CS#TRPBF pinout, LT1365CS#TRPBF application, or LT1365CS#TRPBF equivalent, key selection criteria include capacitive-load drive capability, settling time to 0.1% (50ns), differential gain/phase performance (0.06%/0.04°), and supply current per amplifier (≤7.5mA at ±15V).
Technical Context
The LT1365CS#TRPBF employs a unique 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 compensation ensures stability across all capacitive loads without external components.
It operates over ±2.5V to ±15V supplies, supports rail-to-rail input common-mode range (±13.4V at ±15V), and maintains >84dB CMRR and >90dB PSRR. The architecture avoids traditional dominant-pole compensation, instead using load-sensing feedback to dynamically adjust phase margin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 70MHz - Enables stable closed-loop operation up to 70MHz at unity gain, supporting high-frequency signal conditioning. |
| Slew Rate | 1000V/µs - Supports full-scale 10V step response in ≤50ns with 0.1% settling, critical for fast data acquisition. |
| Input Noise Voltage | 9nV/√Hz - Low noise preserves SNR in precision analog front-ends and video amplification stages. |
| Output Drive | ±7.5V into 150Ω - Directly drives 75Ω coaxial cables with series termination, eliminating buffer stages in video systems. |
| Supply Current | 7.5mA per amplifier - Enables four-channel high-speed amplification within 30mA total, suitable for space-constrained PCBs. |
| Differential Phase | 0.04° at 3.58MHz - Meets broadcast video timing fidelity requirements for NTSC/PAL composite signals. |
| Capacitive Load Stability | Stable with any CL - Eliminates need for isolation resistors or external compensation in buffer, DAC output, or ADC driver applications. |
Pinout & Package
LT1365CS#TRPBF is housed in a 16-lead plastic SO (S package), 150°C maximum junction temperature, θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - Capable of sourcing/sinking ≥50mA, supports ±7.5V swing into 150Ω. |
| 2 | –IN A | Inverting input A - High-impedance node; bias current cancellation minimizes offset drift. |
| 3 | +IN A | Non-inverting input A - Matched to –IN A for optimal CMRR and low input offset current (≤350nA). |
| 4 | +IN B | Non-inverting input B - Electrically isolated from A channel; enables independent dual instrumentation paths. |
| 5 | –IN B | Inverting input B - Paired with +IN B for second amplifier; shares V+ and V– rails with other channels. |
| 6 | OUT B | Amplifier B output - Identical AC/DC specs to OUT A; supports simultaneous high-speed channel operation. |
| 7 | OUT C | Amplifier C output - Quad configuration allows 4-channel signal processing without inter-chip propagation delay. |
| 8 | V– | Negative supply rail - Shared by all four amplifiers; requires low-ESR bypassing near pin for stability. |
| 9 | NC | No connect - Internally unused; must remain unconnected per datasheet. |
| 10 | NC | No connect - Internally unused; must remain unconnected per datasheet. |
| 11 | –IN D | Inverting input D - Fourth amplifier input; supports fully independent 4-channel gain blocks. |
| 12 | OUT D | Amplifier D output - Matches settling time (50ns), noise (9nV/√Hz), and drive strength of other outputs. |
| 13 | +IN D | Non-inverting input D - Completes quad topology; enables multi-channel active filtering or parallel ADC buffering. |
| 14 | +IN C | Non-inverting input C - Third amplifier input; allows three independent gain stages plus one reference buffer. |
| 15 | –IN C | Inverting input C - Paired with +IN C; maintains channel separation >100dB at DC–1MHz. |
| 16 | V+ | Positive supply rail - Shared by all amplifiers; supports wide supply range (±2.5V to ±15V). |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ stability | Guaranteed stable with any capacitive load - eliminates external compensation networks in DAC output buffers and cable drivers. |
| Unity-gain stable | Operates reliably at AV = 1 without oscillation - simplifies design of non-inverting buffers and voltage followers. |
| High slew rate / low supply current ratio | 1000V/µs at only 7.5mA per amp - achieves speed/power efficiency superior to comparable 70MHz op-amps. |
| Low differential distortion | 0.06% differential gain / 0.04° differential phase at 3.58MHz - meets broadcast video fidelity standards without post-correction. |
| Wide supply range | ±2.5V to ±15V operation - supports both low-voltage portable systems and industrial ±12V/±15V rails. |
Applications
| Video Signal Buffering | Data Acquisition Front-End |
|---|---|
Use Scenario: Driving 75Ω coaxial cable from an FPGA video DAC output in an embedded display controller. IC Role / Device Role / Timing Role: Unity-gain buffer with C-Load™ compensation, preserving rise/fall times and minimizing group delay variation. Use Value: Achieves 0.06% differential gain and 0.04° phase error at 3.58MHz, enabling direct NTSC/PAL signal transmission without external equalization. | Use Scenario: Amplifying sensor outputs before a 16-bit SAR ADC in a high-channel-count industrial DAQ system. IC Role / Device Role / Timing Role: Precision gain stage with 50ns 0.1% settling time, ensuring accurate sampling of fast transients. Use Value: Delivers 9nV/√Hz input noise and <1.5mV offset, maintaining ENOB >14 bits across 4 simultaneous channels. |
| Active Filter Bank | Cable Driver for Test Equipment |
Use Scenario: Implementing a 4-channel 4th-order Butterworth anti-alias filter in automated test equipment. IC Role / Device Role / Timing Role: Quad op-amp configured as two 2nd-order sections per channel, leveraging matched AC characteristics. Use Value: 70MHz GBW and 1000V/µs slew rate maintain filter shape integrity up to 10MHz, with <0.1dB passband ripple. | Use Scenario: Output stage of a programmable waveform generator delivering ±5V signals to 50Ω loads. IC Role / Device Role / Timing Role: High-current output driver with fast transient response and low output impedance (<0.7Ω). Use Value: Sustains 50mA output current and ±3.4V swing into 150Ω at ±5V supplies, enabling clean 100MHz square wave generation. |
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 |
|---|---|---|---|
| LT1364CS8#TRPBF | Dual-channel version; identical GBW (70MHz), slew rate (1000V/µs), and noise (9nV/√Hz); same S8 package footprint. | Requires two devices for quad functionality; increases board area and component count vs single LT1365CS#TRPBF. | Select when only two high-speed channels are needed or when layout constraints favor dual SO-8 over quad SO-16. |
| ADA4897-2ARZ | Lower supply current (2.6mA per amp), lower noise (1nV/√Hz), but reduced GBW (225MHz) and slew rate (125V/µs); not unity-gain stable. | Requires external compensation for unity-gain use; unsuitable for direct capacitive-load driving without series resistor. | Select for ultra-low-noise, low-power applications where bandwidth >70MHz is unnecessary and load capacitance is minimal. |
Compared with LT1364CS8#TRPBF, LT1365CS#TRPBF integrates four channels in one SO-16 package, reducing PCB area and inter-channel skew; compared with ADA4897-2ARZ, it trades off noise and power for guaranteed capacitive-load stability and higher slew rate-critical for video and data acquisition.
Availability
LT1365CS#TRPBF is available at Aetrix Electronics and suitable for video signal buffering, data acquisition front-ends, active filter banks, and cable driver applications requiring stable component supply across industrial and embedded production cycles.
Supply support for LT1365CS#TRPBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LT1365CS#TRPBF belongs to ADI's legacy Linear Technology high-speed op-amp product line, engineered specifically for demanding applications requiring fast settling, low distortion, and robust capacitive-load drive without external compensation.
FAQ
What is the maximum capacitive load the LT1365CS#TRPBF can drive while remaining stable?
The LT1365CS#TRPBF is specified as stable with any capacitive load - including infinite capacitance - due to its patented C-Load™ compensation architecture. This eliminates the need for external isolation resistors or compensation networks when driving DAC outputs, ADC inputs, coaxial cables, or piezoelectric transducers. Stability is maintained across the full ±2.5V to ±15V supply range and –40°C to 85°C temperature range, as verified in the datasheet's typical performance curves (e.g., G30).
Does the LT1365CS#TRPBF require external compensation for unity-gain operation?
No, the LT1365CS#TRPBF is unity-gain stable by design and requires no external compensation components. Its internal compensation network ensures unconditional stability at AV = 1 across all supply voltages (±2.5V to ±15V), temperatures (–40°C to 85°C), and load conditions - including purely capacitive or complex reactive loads. This is confirmed in the "Features" section and validated in the "Capacitive Load Handling" plot (G30) of the LT1364/LT1365 datasheet.
What is the typical settling time of the LT1365CS#TRPBF for a 10V step at 0.1% accuracy?
The LT1365CS#TRPBF achieves 50ns settling time to 0.1% for a 10V output step under inverting configuration (AV = –1) with ±15V supplies, as specified in the "Electrical Characteristics" table and confirmed in Figure TA02 and G11. This performance holds across the full operating temperature range and is enabled by its single-stage, high-slew-rate architecture - making it suitable for high-speed data acquisition and pulse amplification.
Can the LT1365CS#TRPBF operate from a single +5V supply?
Yes, the LT1365CS#TRPBF supports single-supply operation down to +5V total (i.e., V+ = +5V, V– = 0V), though its specified performance is characterized for split supplies (±2.5V, ±5V, ±15V). In single-supply mode, the input common-mode range extends from 0.5V to 3.4V (at +5V), and output swing reaches ±3.4V into 150Ω. Designers must ensure proper input biasing and verify settling time/noise performance per application requirements.
What is the thermal resistance (θJA) of the LT1365CS#TRPBF in its S package?
The LT1365CS#TRPBF in the 16-lead plastic SO (S package) has a junction-to-ambient thermal resistance (θJA) of 130°C/W, as documented in the "Package/Order Information" section of the datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves with PCB copper area, thermal vias, and airflow. Maximum junction temperature is rated at 150°C.
LT1365CS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LT1365CS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1365CS#TRPBF 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#TRPBF reliable?
The price and inventory of LT1365CS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1365CS#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1365CS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1365CS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1365CS#TRPBF?
LT1365CS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1365CS#TRPBF 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#TRPBF?
For technical support, including LT1365CS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1365CS#TRPBF requirements.
6.How does Aetrix verify that LT1365CS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1365CS#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1365CS#TRPBF?
All LT1365CS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1365CS#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LT1365CS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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