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Analog Devices Inc. LT1806IS6#TR
- Part No.:
- LT1806IS6#TR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1806IS6#TR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,806
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Product details
Overview
LT1806IS6#TR from Analog Devices (formerly Linear Technology) is a single, rail-to-rail input and output precision operational amplifier in a 6-pin TSOT-23 package, featuring 325MHz gain-bandwidth product, 140V/μs slew rate, 85mA output current, –80dBc harmonic distortion at 5MHz, and 3.5nV/√Hz input voltage noise. It operates from 2.5V to 12.6V supplies and is specified over –40°C to 85°C for high-fidelity signal conditioning in low-voltage data acquisition systems.
For engineers reviewing the LT1806IS6#TR datasheet, LT1806IS6#TR pinout, LT1806IS6#TR application, or LT1806IS6#TR equivalent, this page delivers verified electrical specifications, thermal performance data, shutdown timing (tON = 80ns, tOFF = 50ns), rail-to-rail swing behavior (within 20mV of rails), and real-world use cases including ADC driving and video line buffering.
Technical Context
The LT1806IS6#TR employs a complementary bipolar input stage enabling rail-to-rail common-mode input range (V– to V+) and output swing within 20mV of either supply rail. Its unity-gain stable architecture supports high-speed closed-loop configurations up to 325MHz GBW with 140V/μs slew rate and maintains low distortion (–80dBc @ 5MHz) across ±5V, +5V/0V, and +3V/0V supply conditions.
It integrates an active power-down function via the SHDN pin (logic-low threshold = 0.3V, logic-high = V+ – 0.5V), reducing supply current from 11–16mA to 0.4–1.2mA while maintaining <75μA shutdown output leakage. Thermal resistance θJA is 160°C/W in the TSOT-23 package, with junction temperature rated to 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 325MHz - enables stable unity-gain operation up to 325MHz, supporting wideband amplification without peaking. |
| Slew Rate | 140V/μs - ensures faithful reproduction of fast transient signals (e.g., 10MHz full-power sine waves) without slewing distortion. |
| Input Voltage Noise | 3.5nV/√Hz @ 10kHz - minimizes added noise in precision sensor interfaces and low-level analog front-ends. |
| Output Current | ±85mA - drives heavy loads such as 150Ω video lines or 100Ω ADC inputs without gain compression or clipping. |
| Supply Range | 2.5V to 12.6V - supports single-supply 3V/5V systems and dual-supply ±5V operation with guaranteed specs across both. |
| Shutdown Current | 0.4mA @ 3V - reduces system standby power by >95% while preserving fast wake-up (80ns turn-on time). |
| Harmonic Distortion | –80dBc @ 5MHz - meets SFDR requirements (>83dB) for 10Msps, 12-bit ADC drivers in instrumentation applications. |
Pinout & Package
LT1806IS6#TR is housed in a 6-lead plastic TSOT-23 package (S6), 1mm profile, with exposed pad for thermal enhancement. Pinout follows standard op amp configuration with integrated shutdown control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier Output | Delivers rail-to-rail swing (within 20mV of V+ or V–) and ±85mA drive capability into resistive or capacitive loads. |
| 2 (V–) | Negative Supply Rail | Reference node for dual-supply operation or ground return in single-supply configurations; connects to PCB thermal plane. |
| 3 (+IN) | Non-Inverting Input | High-impedance node (IB ≤ ±16μA) with rail-to-rail common-mode range; accepts signals from V– to V+. |
| 4 (–IN) | Inverting Input | Matches +IN in offset, bias, and noise; supports precision differential and transimpedance configurations. |
| 5 (SHDN) | Active-Low Shutdown Control | Pulls supply current to ≤1.2mA when ≤0.3V; requires no external pull-up; compatible with 1.8V/3.3V logic. |
| 6 (V+) | Positive Supply Rail | Accepts 2.5V–12.6V; powers internal bias circuitry and output stage; decoupling recommended near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Maximizes dynamic range in low-voltage systems (e.g., 3V ADC interfaces), eliminating level-shifting components. |
| Integrated shutdown pin | Enables rapid power gating (50ns turn-off, 80ns turn-on) for battery-powered or burst-mode signal chains. |
| Low distortion at high frequency | –80dBc HD2+HD3 at 5MHz allows direct driving of 10Msps, 12-bit SAR ADCs without external filtering. |
| Wide supply voltage range | Operates from 2.5V to 12.6V with consistent GBW, slew rate, and noise-supports legacy ±5V and modern 3V systems. |
| Robust input protection | Back-to-back diodes allow input overvoltage beyond rails (±10mA max) without phase reversal or damage. |
Applications
| ADC Driver | Video Line Driver |
|---|---|
Use Scenario: Driving the analog input of a 10Msps, 12-bit SAR ADC in a portable data logger with 3V single supply. IC Role / Device Role / Timing Role: Precision buffer amplifier providing gain-of-1, rail-to-rail swing, and low-noise signal conditioning before sampling. Use Value: Achieves 83dB SFDR (non-averaged FFT) at 1.4086MHz input, meeting ENOB >11.5 bits without external reconstruction filter. | Use Scenario: Buffering composite NTSC video signals in a security camera encoder with 150Ω coaxial output load. IC Role / Device Role / Timing Role: High-speed, low-distortion line driver delivering 2VP-P signal with minimal group delay variation. Use Value: Delivers ΔG = 0.01%, Δθ = 0.01° for NTSC compliance-critical for color fidelity in analog video transmission. |
| Rail-to-Rail Sensor Interface | Active Filter Stage |
Use Scenario: Amplifying output of a 0–2.5V bridge-based pressure sensor in an industrial IoT node powered from 3.3V. IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier front-end with rail-to-rail input/output and low 1/f noise. Use Value: Maintains 550μV max VOS and 3.5nV/√Hz broadband noise across full input range, enabling <0.1% measurement accuracy. | Use Scenario: Implementing a 5MHz 4th-order Butterworth low-pass filter in a medical ultrasound receive path. IC Role / Device Role / Timing Role: Unity-gain stable, high-GBW op amp used in Sallen-Key topology with minimal phase shift. Use Value: Supports >300MHz GBW margin at filter cutoff, ensuring flat passband response and controlled roll-off without peaking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-1ARJZ-R7 | Lower noise (1nV/√Hz), lower supply current (3.6mA), but only 200MHz GBW and no shutdown pin. | Better for ultra-low-noise sensor preamps; unsuitable where fast shutdown or >300MHz bandwidth is required. | Select if noise dominates design and shutdown is unnecessary; avoid when driving 10Msps ADCs or requiring fast power cycling. |
| OPA837IDBVR | Higher GBW (480MHz), higher slew rate (425V/μs), but higher noise (4.5nV/√Hz), no rail-to-rail input, and no shutdown. | Better for RF IF amplification; incompatible with rail-to-rail input sensors or low-voltage single-supply systems. | Select for >400MHz small-signal gain stages; avoid for precision DC-coupled or low-voltage rail-to-rail applications. |
Compared with ADA4897-1ARJZ-R7 and OPA837IDBVR, the LT1806IS6#TR uniquely combines rail-to-rail I/O, integrated shutdown, 325MHz GBW, and –80dBc distortion-making it optimal for space-constrained, low-power, high-fidelity data acquisition nodes where supply voltage flexibility and fast enable/disable are critical.
Availability
LT1806IS6#TR is available at Aetrix Electronics and suitable for high-speed data acquisition, video signal conditioning, precision sensor interfacing, and battery-powered instrumentation requiring stable component supply across extended temperature ranges.
Supply support for LT1806IS6#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 its high-performance analog portfolio, emphasizing precision, speed, and reliability in signal chain ICs.
The LT1806 series belongs to Linear Technology's precision high-speed op amp family, designed specifically for demanding low-voltage, low-distortion applications including ADC drivers, video buffers, and active filters where rail-to-rail operation and fast power management are essential.
FAQ
What is the operating temperature range for the LT1806IS6#TR?
The LT1806IS6#TR is specified and guaranteed over –40°C to +85°C ambient temperature. This industrial-grade rating is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics sections covering the "l" (–40°C < TA < 85°C) conditions. The device uses the IS6 suffix to denote this extended temperature grade, distinct from the commercial-grade CS6 variant.
Does the LT1806IS6#TR support true rail-to-rail input and output operation?
Yes, the LT1806IS6#TR supports rail-to-rail input common-mode range (V– to V+) and rail-to-rail output swing (within 20mV of either rail under load). This is explicitly stated in the device description, confirmed in the Input Common Mode Range and Output Voltage Swing specifications, and validated across 3V, 5V, and ±5V supply conditions in the datasheet's Electrical Characteristics tables.
What is the typical power consumption of the LT1806IS6#TR in active and shutdown modes?
In active operation, the LT1806IS6#TR draws 11–16mA per amplifier (typical 13mA at 25°C, 5V supply). In shutdown mode (SHDN ≤ 0.3V), supply current drops to 0.4–1.2mA (typical 0.4mA at 3V), representing >95% reduction. These values are measured per the Electrical Characteristics tables under "IS" and "Disable Supply Current" parameters.
Can the LT1806IS6#TR drive a 150Ω video load while maintaining NTSC video specifications?
Yes-the LT1806IS6#TR achieves ΔG = 0.01% and Δθ = 0.01° into a 150Ω load at AV = 2, meeting stringent NTSC video fidelity requirements. This performance is documented in the Electrical Characteristics table on page 4 of the datasheet and validated in Typical Performance Characteristics (Figures G17, G34), confirming suitability for composite video line driving.
Is the LT1806IS6#TR unity-gain stable, and what is its phase margin at unity gain?
Yes, the LT1806IS6#TR is unity-gain stable, with a minimum phase margin of 45° at unity gain (AV = 1) across all supply voltages and temperatures. This is confirmed in the Typical Performance Characteristics section (Figure G22), where phase margin remains ≥45° at 325MHz GBW, and in the Applications Information section describing stability with capacitive loads up to 1000pF when using series output resistors.
LT1806IS6#TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 140V/µs
- Gain Bandwidth Product:
- 325 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 11mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT1806IS6#TR FAQ
1.How can I place an order for LT1806IS6#TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1806IS6#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 LT1806IS6#TR reliable?
The price and inventory of LT1806IS6#TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1806IS6#TR is usually 5 days.
3.What payment methods are accepted for LT1806IS6#TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1806IS6#TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1806IS6#TR?
LT1806IS6#TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1806IS6#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 LT1806IS6#TR?
For technical support, including LT1806IS6#TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1806IS6#TR requirements.
6.How does Aetrix verify that LT1806IS6#TR is sourced from the original manufacturer or authorized distributors?
All LT1806IS6#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 LT1806IS6#TR meets industry standards.
7.What is the process for return or replacement of LT1806IS6#TR?
All LT1806IS6#TR units undergo pre-shipment inspection (PSI). If there is an issue with LT1806IS6#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 LT1806IS6#TR part is unused and in its original packaging.
Return procedure for LT1806IS6#TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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