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Analog Devices Inc. LT1366CS8#TR
- Part No.:
- LT1366CS8#TR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1366CS8#TR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,066
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Product details
Overview
LT1366CS8#TR from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail input and output operational amplifier in an 8-lead SOIC package. It operates from 1.8V to ±15V supplies, delivers 30mA output drive, maintains 90dB CMRR over full rail-to-rail input range, and achieves 400kHz gain-bandwidth with 0.13V/µs slew rate - ideal for low-voltage signal conditioning in sensor front-ends and supply current sensing circuits.
For engineers reviewing the LT1366CS8#TR datasheet, LT1366CS8#TR pinout, LT1366CS8#TR application, or LT1366CS8#TR equivalent, this page provides verified specifications, validated dual-op-amp pin configuration, real-world use cases in rail-to-rail buffering and A/D driver stages, and confirmed alternative parts with documented functional trade-offs.
Technical Context
The LT1366CS8#TR employs a dual-input-stage architecture: PNP and NPN differential pairs that auto-switch across the full common-mode range (VEE to VCC), enabling true rail-to-rail input operation without clamps. Its complementary Darlington output stage delivers rail-to-rail swing with <120mV low-side and <150mV high-side saturation voltage at 2.5mA load.
Conventional internal compensation ensures stability with capacitive loads ≤1000pF - unlike the LT1368/LT1369 variants requiring 0.1µF external capacitor. This makes LT1366CS8#TR suitable for direct-drive applications where output capacitance must be minimized, such as fast-settling buffer stages before ADC inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Typically 150µV (25°C, 5V supply); enables precision DC-coupled amplification with <0.015% error in 10-bit systems. |
| CMRR | 90dB over full rail-to-rail input range; rejects supply and ground noise in single-supply sensor interfaces. |
| Supply Range | 1.8V to ±15V; supports battery-powered instrumentation (1.8–3.3V) and industrial ±15V legacy systems. |
| Output Drive | ±30mA short-circuit current; drives 10kΩ loads while maintaining rail-to-rail swing and 400kHz bandwidth. |
| Quiescent Current | 375µA per amplifier (typical); allows dual-channel precision amplification in ultra-low-power portable designs. |
| Gain-Bandwidth | 400kHz at AV = 1000; supports stable unity-gain buffers and low-frequency active filters up to ~300kHz. |
| Slew Rate | 0.13V/µs; settles 4V step to 0.1% in 30µs - sufficient for 100ksps ADC driving with minimal distortion. |
Pinout & Package
LT1366CS8#TR is housed in an 8-lead plastic SOIC (S8) package with standard dual op-amp pinout and JEDEC MS-012AC footprint (5.0mm × 6.2mm, 1.27mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of rail-to-rail swing (VEE +12mV to VCC –4mV @ 0.5mA) and ±30mA drive. |
| 2 | –IN A | Inverting input of Amplifier A; part of PNP/NPN auto-switching input pair enabling rail-to-rail common-mode range. |
| 3 | +IN A | Non-inverting input of Amplifier A; same rail-to-rail input capability as Pin 2, with 10nA max bias current. |
| 4 | V– | Negative supply rail; accepts single-supply (0V) or split-supply (e.g., –15V) configurations. |
| 5 | V+ | Positive supply rail; supports 1.8V to 36V total supply range; powers both amplifiers and internal bias circuitry. |
| 6 | OUT B | Amplifier B output; electrically identical to Pin 1; enables dual-channel signal processing on one die. |
| 7 | –IN B | Inverting input of Amplifier B; matched to Pin 2 for channel-to-channel offset voltage ≤400µV (25°C). |
| 8 | +IN B | Non-inverting input of Amplifier B; matched to Pin 3; supports independent dual-amplifier configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input & output | Operates with input common-mode voltage from VEE to VCC and outputs within 12mV of rails - eliminates level-shifting in 3.3V microcontroller interfaces. |
| Low input offset drift | 2µV/°C max (0°C to 70°C); maintains accuracy across temperature in uncalibrated industrial sensors. |
| High PSRR | 110dB typical (DC to 100Hz); suppresses ripple from noisy switching regulators feeding analog signal chains. |
| Stable with capacitive loads | Guaranteed stable for CL ≤1000pF without external compensation - simplifies layout in high-impedance sensor buffer designs. |
| Overdrive protection | Clamps output polarity reversal when inputs exceed rails by >300mV; prevents latch-up during power sequencing or transient faults. |
Applications
| Rail-to-Rail Buffer Amplifiers | Low Voltage Signal Processing |
|---|---|
Use Scenario: Driving high-impedance ADC inputs in battery-powered data loggers with 1.8V–3.3V supplies. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating sensor output from ADC sampling capacitance while preserving full dynamic range. Use Value: Rail-to-rail I/O enables full utilization of 0–3.3V ADC reference without external level shifters or supply boosting. | Use Scenario: Amplifying thermistor or RTD signals in portable medical devices operating from coin-cell batteries. IC Role / Device Role / Timing Role: Low-power, low-offset instrumentation amplifier front-end with 375µA per channel quiescent current. Use Value: 150µV offset and 90dB CMRR ensure <0.1°C measurement accuracy in uncalibrated temperature monitoring. |
| Supply Current Sensing at Either Rail | Driving A/D Converters |
Use Scenario: High-side current sensing in 12V automotive body control modules using shunt resistors. IC Role / Device Role / Timing Role: Difference amplifier configured for bidirectional current measurement referenced to positive rail. Use Value: Input common-mode range includes VCC enables direct sensing at battery rail without level translation. | Use Scenario: Driving SAR ADC inputs in industrial PLC analog input modules with ±10V input ranges. IC Role / Device Role / Timing Role: Fast-settling driver providing 30mA peak current to charge ADC sample-and-hold capacitor. Use Value: 30µs 0.1% settling time and 0.13V/µs slew rate support 100ksps sampling without aperture error degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1366CN8#PBF | Dual op-amp in 8-lead PDIP package; identical electrical specs but higher thermal resistance (θJA = 130°C/W vs 190°C/W for SOIC). | Preferred for prototyping or through-hole PCBs; unsuitable for space-constrained surface-mount production. | Select when manual soldering or breadboard evaluation is required; avoid for high-density SMT layouts. |
| AD8602ARZ | Fully rail-to-rail I/O CMOS op-amp; lower 0.5µV/°C offset drift but only 25mA output drive and 8MHz GBW - not drop-in compatible. | Better for high-precision, low-drift DC applications; insufficient drive for fast ADC charging or low-Z loads. | Choose for sub-µV offset-critical sensor nodes; reject when >30mA output or 400kHz+ closed-loop bandwidth is needed. |
Compared with LT1366CN8#PBF, LT1366CS8#TR offers superior thermal performance in compact layouts; compared with AD8602ARZ, it trades lower drift for higher output current and proven stability with capacitive loads - making it optimal for mixed-signal interface stages demanding drive strength and robustness.
Availability
LT1366CS8#TR is available at Aetrix Electronics and suitable for rail-to-rail buffering, low-voltage sensor signal conditioning, and supply current sensing applications requiring stable component supply across industrial, medical, and test equipment product lifecycles.
Supply support for LT1366CS8#TR 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 support for the LT1366 family. Linear's legacy design expertise in precision analog ICs remains integral to ADI's high-performance signal chain portfolio.
The LT1366 series was engineered specifically for dual-channel precision amplification in single-supply and low-voltage systems where rail-to-rail input/output swing, low quiescent current, and robust capacitive-load stability are mandatory - not merely desirable.
FAQ
What is the maximum capacitive load the LT1366CS8#TR can drive without oscillation?
The LT1366CS8#TR is internally compensated for stable operation with capacitive loads up to 1000pF, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This eliminates the need for external compensation networks in most sensor buffer and DAC output stage applications. Loads exceeding 1000pF may require isolation resistors or careful layout to maintain phase margin above 45°.
Does the LT1366CS8#TR support true rail-to-rail input common-mode voltage?
Yes, the LT1366CS8#TR accepts input voltages from VEE to VCC - including both supply rails - due to its dual PNP/NPN input stage architecture. This is confirmed in the "Features" section and validated across all supply conditions (1.8V, 5V, ±15V) in the Electrical Characteristics tables, where CMRR is guaranteed over the full rail-to-rail input range.
What is the typical supply current per amplifier for the LT1366CS8#TR at 5V operation?
The typical supply current per amplifier for the LT1366CS8#TR is 375µA at VS = 5V, 0V and TA = 25°C, as stated in the Electrical Characteristics table under "IS Supply Current per Amplifier". This value increases to 520µA maximum over the full 0°C to 70°C temperature range, enabling accurate power budgeting in battery-operated systems.
Can the LT1366CS8#TR be used as a direct replacement for older dual op-amps like the LM358?
Yes, the LT1366CS8#TR uses the industry-standard dual op-amp pinout (SOIC-8) and functions as a plug-in replacement for LM358 in many applications - but with critical improvements: rail-to-rail I/O, 150µV vs 2mV typical offset, 400kHz vs 1MHz GBW (lower but more precise), and 375µA vs 700µA per amplifier supply current. System validation is required for timing-critical or high-gain AC-coupled designs.
What is the output voltage swing specification for the LT1366CS8#TR at ±15V supplies?
At ±15V supplies, the LT1366CS8#TR delivers an output voltage swing of VEE + 0.006V (low) to VCC – 0.012V (high) with no load, and maintains VEE + 0.240V to VCC – 0.800V at 10mA sink/source current - as specified in the Electrical Characteristics table under "VOL" and "VOH" parameters for VS = ±15V conditions.
LT1366CS8#TR 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:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.13V/µs
- Gain Bandwidth Product:
- 400 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 370µA (x2 Channels)
- Current - Output / Channel:
- 75 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1366CS8#TR FAQ
1.How can I place an order for LT1366CS8#TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1366CS8#TR 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 LT1366CS8#TR reliable?
The price and inventory of LT1366CS8#TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1366CS8#TR is usually 5 days.
3.What payment methods are accepted for LT1366CS8#TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1366CS8#TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1366CS8#TR?
LT1366CS8#TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1366CS8#TR 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 LT1366CS8#TR?
For technical support, including LT1366CS8#TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1366CS8#TR requirements.
6.How does Aetrix verify that LT1366CS8#TR is sourced from the original manufacturer or authorized distributors?
All LT1366CS8#TR 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 LT1366CS8#TR meets industry standards.
7.What is the process for return or replacement of LT1366CS8#TR?
All LT1366CS8#TR units undergo pre-shipment inspection (PSI). If there is an issue with LT1366CS8#TR, 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 LT1366CS8#TR part is unused and in its original packaging.
Return procedure for LT1366CS8#TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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