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Analog Devices Inc. LT1809CS6#TRMPBF
- Part No.:
- LT1809CS6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1809CS6#TRMPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,265
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Product details
Overview
LT1809CS6#TRMPBF from Analog Devices (formerly Linear Technology) is a single, rail-to-rail input and output operational amplifier optimized for high-speed, low-distortion signal conditioning. It delivers 350 V/µs slew rate, 320 MHz –3dB bandwidth at unity gain, 180 MHz gain-bandwidth product (AV ≥ 10), and –90 dBc harmonic distortion at 5 MHz - enabling precision ADC driving and video line buffering in 3V–12.6V systems.
For engineers reviewing the LT1809CS6#TRMPBF datasheet, LT1809CS6#TRMPBF pinout, LT1809CS6#TRMPBF application, or LT1809CS6#TRMPBF equivalent, this page provides verified package mapping (6-pin TSOT-23), confirmed shutdown functionality, rail-to-rail swing within 20 mV of rails, 85 mA output current, and temperature-stable performance across –40°C to 85°C.
Technical Context
The LT1809CS6#TRMPBF employs a complementary bipolar input stage enabling rail-to-rail common-mode input range (V– to V+) and output swing to within 20 mV of either supply rail. Its fast-settling architecture achieves 34 ns (0.1%) settling time with 8V step, supporting high-fidelity data acquisition and video signal paths.
It integrates an active shutdown pin (SHDN) that reduces supply current to ≤1.3 mA while maintaining high-impedance output state. The device operates stably on supplies from 2.5 V to 12.6 V and maintains specified AC performance (GBW, SR, THD) across ±5 V, +5 V, and +3 V configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3dB Bandwidth | 320 MHz at AV = 1 - supports wideband analog front-ends without peaking compensation |
| Slew Rate | 350 V/µs - enables clean 5 MHz full-scale sine wave reproduction into 100 Ω loads |
| Output Current | ±85 mA - drives heavy capacitive loads (e.g., 75 Ω video lines) without gain compression |
| THD @ 5 MHz | –90 dBc - meets SNR requirements for 12-bit, 10 Msps ADC drivers |
| Rail-to-Rail Swing | Within 20 mV of V+ and V– - maximizes dynamic range in low-voltage (3V) systems |
| Supply Range | 2.5 V to 12.6 V - interoperable with Li-ion, USB, and industrial 5V/±5V rails |
| Shutdown Current | ≤1.3 mA - enables power-gating in battery-powered instrumentation |
Pinout & Package
LT1809CS6#TRMPBF is housed in a 6-lead plastic TSOT-23 (ThinSOT™) package, 1 mm profile, with thermal pad connected to V– for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Amplifier Output | Delivers rail-to-rail voltage swing up to ±85 mA; requires local 0.1 µF bypass near pin |
| 2 V– | Negative Supply / Thermal Pad | Primary ground reference and thermal path; must connect to ≥2 oz copper plane |
| 3 +IN | Non-Inverting Input | High-impedance node with rail-to-rail CMVR; matched bias current minimizes offset drift |
| 4 –IN | Inverting Input | Differential pair input; supports unity-gain stable operation with no external compensation |
| 5 SHDN | Active-Low Shutdown Control | Pull ≤0.3 V to disable amplifier; output enters high-Z state with <75 µA leakage |
| 6 V+ | Positive Supply | Accepts 2.5–12.6 V; PSRR >83 dB ensures immunity to digital supply noise |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with 20 mV headroom | Enables full-scale signal utilization in 3V systems without level-shifting circuitry |
| 350 V/µs slew rate & 320 MHz bandwidth | Supports 1080p video line driving and fast-settling multiplexed DAQ channels |
| –90 dBc THD at 5 MHz | Preserves ENOB >11 bits for 12-bit ADC interfaces up to 10 Msps sampling |
| Integrated shutdown with 50 ns turn-off | Allows microsecond-level power cycling in portable test equipment and sensor nodes |
| Input overvoltage tolerance beyond rails | Withstands ±VS differential input without phase reversal or latch-up per Absolute Max Ratings |
Applications
| High-Speed ADC Driver | Low-Voltage Video Line Driver |
|---|---|
Use Scenario: Driving the analog input of a 12-bit, 10 Msps SAR ADC in a portable medical sensor. IC Role / Device Role / Timing Role: Buffer and level-shift sensor output to match ADC's input range while rejecting supply noise. Use Value: 350 V/µs slew rate and –90 dBc THD ensure <0.5 LSB integral nonlinearity error at full-scale 5 MHz input. | Use Scenario: Transmitting composite NTSC video signals over 75 Ω coaxial cable in embedded vision modules. IC Role / Device Role / Timing Role: Single-supply video buffer with DC-coupled output and minimal differential gain/phase error. Use Value: ΔG = 0.01% and Δθ = 0.01° meet broadcast-grade video fidelity requirements without AC coupling. |
| Rail-to-Rail Instrumentation Amplifier Stage | Active Filter Building Block |
Use Scenario: Front-end gain stage in a handheld multimeter measuring ±200 mV signals from thermocouples. IC Role / Device Role / Timing Role: Precision, low-drift amplifier accepting inputs down to V– and delivering rail-limited output to ADC. Use Value: Input offset voltage ≤3.5 mV and CMRR ≥80 dB suppress common-mode noise from noisy PCB environments. | Use Scenario: 4th-order low-pass filter for anti-aliasing before audio ADC in IoT voice interface. IC Role / Device Role / Timing Role: High-Q, low-noise op amp in Sallen-Key topology operating at 20 kHz cutoff. Use Value: 16 nV/√Hz input voltage noise and 5 pA/√Hz current noise preserve SNR in 24-bit audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-1ARMZ | Lower 1 nV/√Hz noise, but only 200 MHz GBW and no shutdown pin | Better for ultra-low-noise photodiode amps; unsuitable where power gating is required | Choose ADA4897-1ARMZ when noise dominates over power control needs |
| OPA837IDBVR | Higher 450 V/µs slew rate, but limited 2.7–5.5 V supply range and no rail-to-rail input | Preferred for 3.3V high-speed buffers; cannot accept input below V– in single-supply configs | Choose OPA837IDBVR only in fixed 3.3V systems with input above ground |
Compared with ADA4897-1ARMZ and OPA837IDBVR, the LT1809CS6#TRMPBF uniquely combines shutdown capability, true rail-to-rail input/output, wide 2.5–12.6 V supply support, and –90 dBc distortion - making it the only option among the three suitable for battery-powered, multi-rail, high-fidelity signal chain stages.
Availability
LT1809CS6#TRMPBF is available at Aetrix Electronics and suitable for high-speed data acquisition, portable medical instrumentation, and industrial video interface designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LT1809CS6#TRMPBF 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 conditioning ICs.
The LT1809 series belongs to Linear Technology's high-speed, low-distortion op amp family, designed specifically for demanding applications including ADC drivers, video line drivers, and rail-to-rail instrumentation where bandwidth, linearity, and supply flexibility are critical.
FAQ
What is the maximum operating temperature range for the LT1809CS6#TRMPBF?
The LT1809CS6#TRMPBF is rated for operation from –40°C to +85°C and is fully specified across this industrial temperature range. Electrical characteristics including slew rate, THD, and rail-to-rail swing are guaranteed under these conditions, with thermal resistance θJA = 145°C/W measured on standard 2 oz copper layout.
Does the LT1809CS6#TRMPBF require external compensation for unity-gain stability?
No, the LT1809CS6#TRMPBF is internally compensated and unity-gain stable. It drives capacitive loads up to 100 pF directly without oscillation, as verified in Typical Performance Characteristics (Figure 14, G31/G32). For heavier loads (>100 pF), a small series resistor (e.g., 10 Ω) at the output is recommended.
How does the shutdown feature of the LT1809CS6#TRMPBF behave during power-down?
When the SHDN pin is pulled low (≤0.3 V), the LT1809CS6#TRMPBF disables internal biasing, reducing supply current to ≤1.3 mA. The output enters a high-impedance state with ≤75 µA leakage, preventing loading of downstream circuitry. Turn-off time is 50 ns, ensuring fast power-state transitions in time-critical systems.
Can the LT1809CS6#TRMPBF drive a 75 Ω video load with DC coupling?
Yes - the LT1809CS6#TRMPBF delivers ±85 mA output current and swings rail-to-rail within 20 mV, enabling direct DC-coupled 75 Ω video line driving. Measured differential gain (ΔG = 0.01%) and phase (Δθ = 0.01°) at NTSC frequencies confirm broadcast-grade fidelity without AC coupling or clamping diodes.
What is the input offset voltage specification for the LT1809CS6#TRMPBF at 25°C and full temperature range?
At TA = 25°C, the LT1809CS6#TRMPBF has a typical input offset voltage of 0.6 mV (max 2.5 mV). Over the full –40°C to +85°C range, the max offset is 4.25 mV, with drift ≤25 µV/°C. These values are measured with inputs at V+ and V–, reflecting worst-case rail-dependent offset behavior.
LT1809CS6#TRMPBF 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:
- 350V/µs
- Gain Bandwidth Product:
- 180 MHz
- -3db Bandwidth:
- 320 MHz
- Current - Input Bias:
- 12.5 µA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 15mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT1809CS6#TRMPBF FAQ
1.How can I place an order for LT1809CS6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1809CS6#TRMPBF 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 LT1809CS6#TRMPBF reliable?
The price and inventory of LT1809CS6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1809CS6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1809CS6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1809CS6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1809CS6#TRMPBF?
LT1809CS6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1809CS6#TRMPBF 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 LT1809CS6#TRMPBF?
For technical support, including LT1809CS6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1809CS6#TRMPBF requirements.
6.How does Aetrix verify that LT1809CS6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1809CS6#TRMPBF 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 LT1809CS6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1809CS6#TRMPBF?
All LT1809CS6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1809CS6#TRMPBF, 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 LT1809CS6#TRMPBF part is unused and in its original packaging.
Return procedure for LT1809CS6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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