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Analog Devices Inc. LT1361CS8#TRPBF
- Part No.:
- LT1361CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1361CS8#TRPBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,433
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Product details
Overview
LT1361CS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual high-speed voltage-feedback operational amplifier with 50MHz gain bandwidth, 800V/µs slew rate, and unity-gain stability. It delivers ±13V output swing into 500Ω at ±15V supplies and drives capacitive loads without external compensation-making it ideal for video line drivers, active filters, and data acquisition front-ends.
For engineers reviewing the LT1361CS8#TRPBF datasheet, LT1361CS8#TRPBF pinout, LT1361CS8#TRPBF application, or LT1361CS8#TRPBF equivalent, key selection criteria include its C-load stability, low 1mV max input offset voltage, 9nV/√Hz input noise, 60ns 0.1% settling time, and guaranteed operation from –40°C to 85°C in the SO-8 package.
Technical Context
The LT1361CS8#TRPBF 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 wide bandwidth while maintaining DC precision.
It features internal compensation for unconditional stability with any capacitive load, and its input stage uses complementary NPN/PNP emitter followers for bias current cancellation-reducing input offset current to ≤250nA and enabling accurate DC-coupled signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 50MHz at ±15V - supports >10MHz closed-loop bandwidth in moderate-gain configurations. |
| Slew Rate | 800V/µs at ±15V - enables clean 10V step response in ≤60ns with 0.1% settling. |
| Input Offset Voltage | ≤1.0mV (max) at ±15V - ensures <0.01% gain error in precision instrumentation amplifiers. |
| Input Noise Voltage | 9nV/√Hz at 10kHz - preserves SNR in low-level analog signal chains (e.g., sensor interfaces). |
| Output Swing | ±13V into 500Ω at ±15V - drives standard video loads (75Ω terminated) with headroom for AC coupling. |
| Supply Current | 5.0mA per amplifier at ±15V - balances speed and power for dual-channel high-performance systems. |
| Capacitive Load Stability | Stable with any CL - eliminates need for isolation resistors when driving coaxial cables or ADC input capacitance. |
Pinout & Package
The LT1361CS8#TRPBF is housed in an 8-lead plastic SOIC (SO-8, narrow 0.150") package with standard pinout and JEDEC-compliant dimensions (3.9mm × 4.9mm × 1.75mm). Thermal resistance θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN A) | Inverting input of amplifier A | Differential input node with 3pF capacitance; balanced source impedance recommended for min. offset drift. |
| 2 (+IN A) | Non-inverting input of amplifier A | Complementary input to Pin 1; same bias current polarity as Pin 1 for matched cancellation. |
| 3 (V+) | Positive supply rail | Accepts up to +18V; total V+ to V– ≤ 36V; bypass with 0.01–0.1µF RF capacitor near pin. |
| 4 (OUT A) | Output of amplifier A | Capable of ±13V swing into 500Ω; stable with direct connection to 75Ω coax or 1000pF load. |
| 5 (OUT B) | Output of amplifier B | Independent output with identical drive capability and settling performance as OUT A. |
| 6 (–IN B) | Inverting input of amplifier B | Electrically isolated from amplifier A; channel separation ≥100dB at 10kHz. |
| 7 (+IN B) | Non-inverting input of amplifier B | Matched to Pin 6; enables dual-channel instrumentation or differential driver topologies. |
| 8 (V–) | Negative supply rail | Accepts down to –18V; requires low-ESR bulk bypass (1–10µF tantalum) for high-current transient loads. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ stability | Guaranteed stable with unlimited capacitive load-enables direct cable driving without series resistor or feedback compensation. |
| Unity-gain stable | No external compensation required for gain ≥1 configurations-simplifies filter and buffer designs. |
| Low input offset current | ≤250nA max-minimizes voltage error across high-impedance sensor sources or photodiode transimpedance networks. |
| High slew rate / low noise trade-off | 800V/µs + 9nV/√Hz-rare combination enabling both fast pulse acquisition and high-fidelity analog signal amplification. |
| Wide supply range | ±2.5V to ±15V operation-supports low-voltage portable systems and high-dynamic-range industrial signal chains. |
Applications
| Video Line Driver | Active Anti-Aliasing Filter |
|---|---|
Use Scenario: Driving composite video signals over 75Ω coaxial cable to monitors or capture cards. IC Role / Device Role / Timing Role: Buffer amplifier with gain = 2, DC-coupled, driving 75Ω load with minimal group delay variation. Use Value: 0.2% differential gain / 0.3° differential phase error at 3.58MHz ensures broadcast-grade color fidelity without external peaking networks. | Use Scenario: 4th-order Butterworth low-pass filtering before a 1MSPS SAR ADC in data acquisition systems. IC Role / Device Role / Timing Role: Dual op-amp implementing 2-pole sections with precise component ratio matching. Use Value: 60ns 0.1% settling time allows full-scale step response within one ADC sample period at 1MSPS. |
| Instrumentation Amplifier Front-End | High-Speed Photodiode Transimpedance |
Use Scenario: Two-op-amp IA configuration measuring µV-level thermocouple outputs in noisy industrial environments. IC Role / Device Role / Timing Role: First-stage differential amplifier providing common-mode rejection and gain before final output stage. Use Value: 92dB CMRR at ±12V common-mode and 1mV max VOS enable sub-10µV measurement resolution. | Use Scenario: Converting fast photodiode current pulses (e.g., LIDAR return signals) into voltage with minimal rise-time degradation. IC Role / Device Role / Timing Role: Transimpedance amplifier with 50kΩ feedback resistor and optimized layout for <1ns added jitter. Use Value: 800V/µs slew rate and 50MHz GBW preserve <100ps pulse edge integrity for time-of-flight accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1364CS8#TRPBF | 70MHz GBW, 1000V/µs SR, 6.3mA/amplifier supply current, 1.5mV max VOS | Higher bandwidth/speed at cost of 26% higher quiescent power and reduced DC precision | Select when >50MHz closed-loop bandwidth or faster settling (<45ns) is required and power budget allows. |
| LT1813CS8#TRPBF | 100MHz GBW, 700V/µs SR, 3mA/amplifier supply current, ±2.7V to ±5.5V supply range only | Optimized for low-voltage (≤5V) systems; not compatible with ±12V/±15V rails | Select for battery-powered or USB-powered instruments needing high speed at 3.3V/5V operation. |
Compared with LT1364CS8#TRPBF and LT1813CS8#TRPBF, the LT1361CS8#TRPBF uniquely balances 50MHz bandwidth, 800V/µs slew rate, and <5mA/amplifier supply current across ±2.5V to ±15V supplies-making it the optimal choice for dual-channel, mixed-signal systems requiring both speed and DC accuracy without rail constraints.
Availability
LT1361CS8#TRPBF is available at Aetrix Electronics and suitable for video signal routing, active filter design, and high-speed data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1361CS8#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 acquired Linear Technology in 2017 and maintains full product continuity, documentation, and manufacturing for legacy Linear parts including the LT1361 family.
The LT1361 series was designed as a dual high-speed, low-power op amp family targeting precision analog signal conditioning in data acquisition, video, and communications infrastructure-emphasizing C-load stability and unity-gain usability without external compensation.
FAQ
What supply voltage ranges does the LT1361CS8#TRPBF support?
The LT1361CS8#TRPBF operates from ±2.5V to ±15V total supply (i.e., 5V to 30V total), with full specifications guaranteed at ±2.5V, ±5V, and ±15V. Absolute maximum rating is 36V between V+ and V–. Operation outside the specified ranges may degrade parameters like input offset voltage or slew rate, and is not characterized.
Is the LT1361CS8#TRPBF stable with large capacitive loads?
Yes-the LT1361CS8#TRPBF is explicitly designed for unconditional stability with any capacitive load (C-Load™ technology). It remains stable driving 1000pF directly, including coaxial cables and ADC input capacitance, without requiring isolation resistors or external compensation networks.
What is the typical input bias current of the LT1361CS8#TRPBF?
The LT1361CS8#TRPBF has a typical input bias current of 0.3µA per input at ±15V, with a maximum of 1.0µA over temperature. Its complementary NPN/PNP input stage provides first-order bias current cancellation, resulting in low input offset current (≤250nA max) critical for high-impedance sensor interfaces.
Can the LT1361CS8#TRPBF be used in single-supply configurations?
Yes-the LT1361CS8#TRPBF supports single-supply operation (e.g., 0V and +10V) as long as the input common-mode voltage and output swing remain within specified limits. Input voltage range extends to within 1.1V of each rail at ±2.5V supplies, and output swing reaches within 1.2V of each rail under light loads-enabling rail-to-rail input/output use cases with proper level-shifting.
How does the LT1361CS8#TRPBF compare to the LT1360 in terms of performance?
The LT1361CS8#TRPBF is the dual version of the LT1360 single op amp. Both share identical electrical specifications-including 50MHz GBW, 800V/µs slew rate, and C-Load™ stability-but the LT1361CS8#TRPBF integrates two independent amplifiers in one SO-8 package, offering space and BOM savings for dual-channel applications without performance trade-offs.
LT1361CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 800V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 4mA (x2 Channels)
- Current - Output / Channel:
- 34 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1361CS8#TRPBF FAQ
1.How can I place an order for LT1361CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1361CS8#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 LT1361CS8#TRPBF reliable?
The price and inventory of LT1361CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1361CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1361CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1361CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1361CS8#TRPBF?
LT1361CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1361CS8#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 LT1361CS8#TRPBF?
For technical support, including LT1361CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1361CS8#TRPBF requirements.
6.How does Aetrix verify that LT1361CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1361CS8#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 LT1361CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1361CS8#TRPBF?
All LT1361CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1361CS8#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 LT1361CS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1361CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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