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Analog Devices Inc. LT1815CS6#TRMPBF
- Part No.:
- LT1815CS6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1815CS6#TRMPBF.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:746
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Product details
Overview
LT1815CS6#TRMPBF from Analog Devices (formerly Linear Technology) is a single-channel, programmable-current, high-speed voltage-feedback operational amplifier in a 6-lead TSOT-23 package. It delivers 220MHz gain-bandwidth, 1500V/µs slew rate, and 6.5mA supply current per amplifier at ±5V supplies, with low 1.5mV max input offset voltage and 6nV/√Hz input noise - enabling precision video buffering and RF signal conditioning in space-constrained industrial instrumentation.
For engineers reviewing the LT1815CS6#TRMPBF datasheet, LT1815CS6#TRMPBF pinout, LT1815CS6#TRMPBF application, or LT1815CS6#TRMPBF equivalent, this page provides verified pin functions, real-world application contexts for video drivers and active filters, confirmed low-power mode behavior (1–2mA), thermal derating guidance, and two validated alternative op-amps with documented performance trade-offs.
Technical Context
The LT1815CS6#TRMPBF uses a voltage-feedback topology with current-feedback slewing characteristics, enabling fast transient response without sacrificing DC accuracy. Its ISET pin allows dynamic switching between full-speed mode (6.5mA, 220MHz GBW) and low-power mode (1.5mA, 50MHz GBW) via an external resistor to V–.
It operates from ±1.25V to ±5.5V dual supplies or 2.5V to 5V single supply, supports rail-to-rail output swing (±3.5V into 100Ω at ±5V), and maintains unity-gain stability with ≤2pF input capacitance and 750MΩ differential input resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 220MHz typical - enables stable closed-loop operation up to 100MHz in gain ≥2 configurations. |
| Slew Rate | 1500V/µs typical - supports clean 5MHz, 2VP-P signals into 100Ω loads with –70dB THD. |
| Supply Current | 6.5mA per amplifier at ±5V - reduces to 1.5mA in low-power mode via ISET pin resistor. |
| Input Offset Voltage | 1.5mV maximum - ensures <0.1% gain error in 10-bit data acquisition front-ends. |
| Input Noise Density | 6nV/√Hz at 10kHz - preserves SNR in low-level sensor signal amplification. |
| Output Drive | ±50mA minimum into ±3V - drives 100Ω video lines or active filter stages without external buffers. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial control and automotive cabin electronics. |
Pinout & Package
LT1815CS6#TRMPBF is housed in a 6-lead plastic TSOT-23 (S6) package, 2.9mm × 1.6mm × 1.0mm profile, with exposed pad thermally connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply | Accepts +2.5V to +5.5V (single) or +1.25V to +5.5V (dual); decoupling required within 2mm. |
| ISET | Current Programming Input | Connect to V– via ≤75Ω for full speed; 40kΩ yields ~1.5mA low-power mode. |
| –IN | Inverting Input | High-impedance node (750MΩ diff); sensitive to layout-keep trace short and guarded. |
| OUT | Amplifier Output | Capable of ±3.5V swing into 100Ω; requires series R (10–50Ω) when driving >10pF loads. |
| V– | Negative Supply | Accepts –2.5V to –5.5V (single) or –1.25V to –5.5V (dual); connects internally to exposed pad. |
| +IN | Non-Inverting Input | Differential pair input with ±8μA max bias current; balanced source impedances minimize offset. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Supply Current | Adjustable from 1.5mA to 6.5mA via ISET pin resistor-enables dynamic power/speed scaling in battery-powered systems. |
| Unity-Gain Stable | No external compensation required for AV = 1; supports direct use in voltage followers and active filters without instability risk. |
| Low Input Offset Drift | 10μV/°C max over –40°C to +85°C-maintains calibration integrity in unregulated ambient environments. |
| High Output Current | ±50mA drive capability-eliminates need for external buffer stages in 75Ω video line drivers. |
| Robust Input Protection | Withstands ±6V differential input transients-tolerates ESD events and signal overshoot without clamping diodes. |
Applications
| Video Line Driver | Active Low-Pass Filter |
|---|---|
Use Scenario: Driving composite video signals (NTSC/PAL) over 75Ω coaxial cable in broadcast equipment or medical imaging displays. IC Role / Device Role / Timing Role: Unity-gain buffer with wide bandwidth and low distortion to preserve luminance/chrominance fidelity. Use Value: –70dB THD at 5MHz ensures <0.08% differential gain error and <0.04° phase error-meeting SMPTE RP-168 compliance. | Use Scenario: Anti-aliasing and reconstruction filtering in 10-bit, 20MSPS data acquisition systems for motor control feedback loops. IC Role / Device Role / Timing Role: Second-order Sallen-Key topology amplifier with precise pole placement and low noise floor. Use Value: 6nV/√Hz input noise and 220MHz GBW enable <1LSB noise contribution below 100kHz with 0.1% passband flatness. |
| RF Signal Conditioning | Industrial Sensor Interface |
Use Scenario: Amplifying IF signals (45–70MHz) in narrowband wireless receivers before ADC sampling. IC Role / Device Role / Timing Role: Fixed-gain (AV = 2) high-linearity amplifier with matched input/output impedance. Use Value: 1500V/µs slew rate prevents slewing-induced intermodulation distortion; channel separation >80dB avoids crosstalk in multi-channel receivers. | Use Scenario: Amplifying low-level bridge outputs (e.g., load cells, RTDs) in PLC analog input modules operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end stage with programmable gain and offset trimming. Use Value: 1.5mV max VOS and 10μV/°C drift ensure <0.05% total error over full temperature range without auto-zero circuitry. |
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 |
|---|---|---|---|
| ADA4897-1ARJZ-R7 | Lower 1nV/√Hz noise, 225MHz GBW, but fixed 3.2mA supply current and no ISET pin. | Superior SNR in low-noise preamp stages; unsuitable where dynamic power scaling is required. | Select when ultra-low noise dominates over programmability and thermal headroom is constrained. |
| LMH6629MA/NOPB | Higher 2.3mA quiescent current, 1.5GHz GBW, but 2.5mV VOS and no low-power mode. | Better for GHz-range small-signal amplification; lacks precision DC specs for sensor interfaces. | Select for RF gain blocks above 100MHz where DC accuracy is secondary to bandwidth. |
Compared with ADA4897-1ARJZ-R7 and LMH6629MA/NOPB, the LT1815CS6#TRMPBF uniquely balances programmable power, precision DC performance, and 220MHz bandwidth-making it optimal for mixed-signal industrial systems requiring both dynamic efficiency and measurement fidelity.
Availability
LT1815CS6#TRMPBF is available at Aetrix Electronics and suitable for video line drivers, active filters, RF signal conditioning, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1815CS6#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LT1815/LT1816/LT1817 family was designed for high-fidelity signal conditioning in space-constrained, power-sensitive applications-delivering current-feedback speed with voltage-feedback precision in miniature packages.
FAQ
What is the maximum supply voltage rating for LT1815CS6#TRMPBF?
The LT1815CS6#TRMPBF has an absolute maximum total supply voltage (V+ to V–) of 12.6V. It is specified for operation from ±1.25V to ±5.5V dual supplies or 2.5V to 5V single supply. Exceeding ±6.3V on either rail risks permanent damage per Absolute Maximum Ratings. Derating is required above 85°C ambient due to θJA = 230°C/W in the TSOT-23 package.
How does the ISET pin function in LT1815CS6#TRMPBF?
The ISET pin on the LT1815CS6#TRMPBF controls supply current and bandwidth. Connecting ISET directly to V– (≤75Ω) enables full-speed mode (6.5mA, 220MHz). Adding a 40kΩ resistor between ISET and V– reduces current to ~1.5mA and GBW to ~50MHz. The ISET pin draws –150μA to –200μA, so resistor selection must account for this sink current to avoid voltage error.
Can LT1815CS6#TRMPBF drive a 75Ω video load with acceptable distortion?
Yes, the LT1815CS6#TRMPBF drives 75Ω loads with –70dB THD at 5MHz and 2VP-P output in gain = –1 configuration. Its ±3.5V output swing into 100Ω (equivalent to 75Ω with minor loading) and 0.08% differential gain/0.04° phase error meet SMPTE RP-168 for broadcast video. Layout best practices-short traces, ground plane, and local 0.01μF bypass-are essential to maintain this performance.
What is the input common-mode voltage range for LT1815CS6#TRMPBF on ±5V supplies?
On ±5V supplies, the LT1815CS6#TRMPBF guarantees an input common-mode voltage range of ±3.5V (i.e., –3.5V to +3.5V) over the full –40°C to +85°C temperature range. This is limited by CMRR specification-not rail-to-rail-and exceeds the ±2.5V range of many competing op-amps, enabling direct interfacing with ±3V logic or sensor outputs without level-shifting.
Is LT1815CS6#TRMPBF unity-gain stable, and what layout precautions are needed?
Yes, the LT1815CS6#TRMPBF is unity-gain stable. Critical layout precautions include: (1) placing 0.01μF ceramic bypass capacitors within 2mm of V+ and V– pins; (2) minimizing trace length to –IN (guard with ground); (3) using a solid ground plane; and (4) adding a 10–50Ω series resistor between OUT and capacitive loads >10pF. These prevent peaking, oscillation, and degraded settling time.
LT1815CS6#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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1500V/µs
- Gain Bandwidth Product:
- 220 MHz
- -3db Bandwidth:
- 350 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 6.5mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT1815CS6#TRMPBF FAQ
1.How can I place an order for LT1815CS6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1815CS6#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 LT1815CS6#TRMPBF reliable?
The price and inventory of LT1815CS6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1815CS6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1815CS6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1815CS6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1815CS6#TRMPBF?
LT1815CS6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1815CS6#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 LT1815CS6#TRMPBF?
For technical support, including LT1815CS6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1815CS6#TRMPBF requirements.
6.How does Aetrix verify that LT1815CS6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1815CS6#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 LT1815CS6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1815CS6#TRMPBF?
All LT1815CS6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1815CS6#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 LT1815CS6#TRMPBF part is unused and in its original packaging.
Return procedure for LT1815CS6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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