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Analog Devices Inc. LT1815IS5#TRMPBF
- Part No.:
- LT1815IS5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT1815IS5#TRMPBF.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,286
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Product details
Overview
LT1815IS5#TRMPBF from Analog Devices (formerly Linear Technology) is a single-channel, high-speed, programmable-current operational amplifier in a 5-lead TSOT-23 package. It delivers 220MHz gain-bandwidth, 1500V/µs slew rate, and 6.5mA supply current per amplifier at ±5V, with rail-to-rail output swing into 100Ω loads - ideal for precision video buffering and high-fidelity data acquisition front-ends.
For engineers reviewing the LT1815IS5#TRMPBF datasheet, LT1815IS5#TRMPBF pinout, LT1815IS5#TRMPBF application, or LT1815IS5#TRMPBF equivalent, this page provides verified DC accuracy (1.5mV max VOS), low-noise operation (6nV/√Hz), programmable current mode (1–10mA), thermal stability (–40°C to 85°C), and TSOT-23 layout guidance for high-speed signal integrity.
Technical Context
The LT1815IS5#TRMPBF uses a voltage-feedback topology with current-feedback slewing characteristics, enabling unity-gain stability while sustaining >750V/µs slew rate under full-speed operation. Its input stage combines complementary NPN/PNP emitter followers for bias current cancellation and differential input tolerance up to ±6V transient.
It supports dual-supply (±1.25V to ±5.5V) and single-supply (2.5V to 5V) operation, with guaranteed CMRR ≥73dB over –40°C to 85°C and PSRR ≥75dB. The ISET pin allows external resistor programming (0–40kΩ) to scale supply current from 1mA (low-power mode) to 10mA (full speed), directly modulating GBW (25–220MHz) and SR (300–1500V/µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 220MHz - enables stable closed-loop operation at gains ≥10 up to ~22MHz, critical for wideband active filters and RF IF stages. |
| Slew Rate | 1500V/µs - supports clean 5MHz, 2VP-P signals into 100Ω without distortion, essential for video line drivers and fast DAC buffers. |
| Input Offset Voltage | 1.5mV max - ensures <0.03% gain error in 12-bit precision systems with matched source impedances. |
| Supply Current | 6.5mA per amplifier at ±5V - balances speed and power for battery-sensitive portable instrumentation. |
| Input Noise Density | 6nV/√Hz at 10kHz - contributes <1.2µVRMS integrated noise in 10MHz bandwidth, suitable for low-level sensor amplification. |
| Output Drive | ±50mA min into ±3V - drives 100Ω loads to ±3.5V swing, supporting terminated coaxial cable interfaces without external buffers. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial control and automotive cabin electronics without derating. |
Pinout & Package
LT1815IS5#TRMPBF is housed in a 5-lead plastic TSOT-23 (S5) package, 2.9mm × 1.6mm × 1.1mm, with exposed pad thermally connected to V–. Pin 1 is OUT; Pin 2 is V–; Pin 3 is +IN; Pin 4 is –IN; Pin 5 is V+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Amplifier output | Capable of sourcing/sinking ±50mA; requires local 0.01µF ceramic bypass to minimize high-frequency instability. |
| V– (Pin 2) | Negative supply rail | Internally tied to exposed thermal pad; must be connected to low-impedance ground plane for θJA = 250°C/W. |
| +IN (Pin 3) | Non-inverting input | Differential input range extends to ±3.5V on ±5V supplies; balanced source impedance minimizes offset error. |
| –IN (Pin 4) | Inverting input | High-impedance node (RIN = 1.5MΩ); feedback network must use CF compensation if RF >1kΩ to suppress peaking. |
| V+ (Pin 5) | Positive supply rail | Accepts 2.5V to 5.5V single supply or ±1.25V to ±5.5V dual supply; decoupling mandatory within 2mm. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable supply current | ISET pin enables dynamic trade-off between power (1mA) and performance (220MHz/1500V/µs) via external resistor (0–40kΩ). |
| Low input offset drift | 10µV/°C max - maintains calibration stability across industrial temperature ranges without periodic nulling. |
| Unity-gain stable | No external compensation required for AV = 1 configurations - simplifies design of voltage followers and active termination circuits. |
| High output drive into heavy loads | Drives 100Ω to ±3.5V with ±5V supplies - eliminates need for external current boosters in video distribution and ADC driver applications. |
| Robust input protection | Withstands ±6V differential input transients without damage - reduces need for external clamping diodes in noisy environments. |
Applications
| Video Line Driver | Data Acquisition Front-End |
|---|---|
Use Scenario: Driving 75Ω coaxial video lines in broadcast equipment with minimal group delay variation. IC Role / Device Role / Timing Role: Unity-gain buffer with low THD (–70dB @5MHz) and fast settling (15ns to 0.1%) to preserve luminance/chrominance fidelity. Use Value: Eliminates ghosting and edge ringing in SD/HD video signals by maintaining flat 350MHz –3dB bandwidth and <0.08% differential gain error. | Use Scenario: Conditioning analog outputs from 16-bit DACs before anti-alias filtering in test instrumentation. IC Role / Device Role / Timing Role: Precision output amplifier with 1.5mV VOS and 6nV/√Hz noise, operating at AV = 2 with 200MHz GBW. Use Value: Preserves 16-bit ENOB by contributing <0.002% gain error and adding <0.5LSB noise in 10MHz bandwidth. |
| Active Filter Stage | High-Speed Comparator Interface |
Use Scenario: Implementing 4th-order Butterworth low-pass filter at 20MHz cutoff in medical ultrasound receivers. IC Role / Device Role / Timing Role: Gain stage in multiple-feedback topology with 220MHz GBW ensuring phase margin >45° at fc. Use Value: Enables sharp roll-off without peaking due to high SR (1500V/µs) and low output impedance (0.2Ω) stabilizing complex feedback networks. | Use Scenario: Converting comparator open-collector outputs to clean, fast-rising logic levels for FPGA capture in time-of-flight sensors. IC Role / Device Role / Timing Role: High-speed level shifter and pulse sharpening buffer with 1ns rise/fall time and 25% overshoot control. Use Value: Reduces timing jitter to <50ps by delivering 1.4ns propagation delay and 15ns 0.1% settling on 2V transitions into 100Ω. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-1ARJZ-R7 | Lower noise (4.5nV/√Hz), higher quiescent current (11.5mA), no ISET pin - fixed full-performance mode only. | Better SNR in low-amplitude sensor chains; unsuitable where dynamic power scaling is required. | Select when maximum bandwidth (295MHz) and lowest noise dominate over programmability and power efficiency. |
| LMH6629MA/NOPB | Higher slew rate (3000V/µs), wider supply range (±2.5V to ±6V), but larger SO-8 package and no guaranteed –40°C to 85°C spec. | Preferred for ultra-fast pulse amplification in radar front-ends; less suitable for space-constrained portable designs. | Select when >2000V/µs slew and ±6V operation are mandatory, and TSOT-23 footprint is not required. |
Compared with ADA4897-1ARJZ-R7 and LMH6629MA/NOPB, the LT1815IS5#TRMPBF uniquely combines programmable current, TSOT-23 size, and guaranteed industrial temperature operation - making it optimal for battery-powered test gear and compact video processing modules where thermal headroom and layout density are constrained.
Availability
LT1815IS5#TRMPBF is available at Aetrix Electronics and suitable for video line driving, high-speed data acquisition, active filtering, precision buffering, and industrial sensor interface applications requiring stable component supply across extended temperature ranges.
Supply support for LT1815IS5#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 legacy high-performance analog portfolio, emphasizing precision, speed, and reliability in signal conditioning ICs.
The LT1815IS5#TRMPBF belongs to the LT1815/LT1816/LT1817 family of programmable-current, high-speed op-amps designed for applications demanding both wide bandwidth and low power - especially where dynamic performance adjustment is needed without changing PCB layout.
FAQ
What is the maximum supply voltage rating for LT1815IS5#TRMPBF?
The LT1815IS5#TRMPBF has an absolute maximum total supply voltage (V+ to V–) of 12.6V. Operation is specified across ±1.25V to ±5.5V dual supplies or 2.5V to 5.5V single supply. Exceeding 12.6V risks permanent damage, and sustained operation above ±5.5V is not characterized or guaranteed for the LT1815IS5#TRMPBF.
Does LT1815IS5#TRMPBF require external compensation for unity-gain stability?
No, the LT1815IS5#TRMPBF is unity-gain stable and does not require external compensation capacitors in AV = 1 configurations. Its internal compensation ensures >45° phase margin at unity gain. However, when using large feedback resistors (>1kΩ), a feedback capacitor (CF > RG • CIN/RF) is recommended to cancel input pole-induced peaking - a layout-dependent consideration, not a stability requirement for basic unity-gain use of LT1815IS5#TRMPBF.
How does the ISET pin function on LT1815IS5#TRMPBF?
The ISET pin on LT1815IS5#TRMPBF controls supply current and speed via an external resistor (RSET) tied to V–. With RSET ≤75Ω, the LT1815IS5#TRMPBF operates at full speed (220MHz GBW, 1500V/µs). At RSET = 40kΩ, it enters low-power mode (25MHz GBW, 300V/µs, 1mA IS). The LT1815IS5#TRMPBF remains fully functional across the full 0–40kΩ range, enabling real-time trade-offs between power and performance.
What is the guaranteed input common-mode voltage range for LT1815IS5#TRMPBF at ±5V supplies?
At ±5V supplies, the LT1815IS5#TRMPBF guarantees an input common-mode voltage range of ±3.5V over the full –40°C to +85°C temperature range, as confirmed by CMRR specification. This allows direct interfacing with ±3V-output DACs or sensors without level-shifting, and supports rail-to-rail input operation within that window - a key specification validated for the LT1815IS5#TRMPBF in its industrial-grade S5 package.
Can LT1815IS5#TRMPBF drive a 50Ω load effectively?
The LT1815IS5#TRMPBF is characterized to drive 100Ω loads to ±3.5V with ±5V supplies. While it can source/sink ±50mA, continuous operation into 50Ω may exceed safe junction temperature without thermal relief. For 50Ω applications, use a series 25Ω resistor to isolate the load and maintain stability - this configuration preserves signal integrity while keeping power dissipation within limits for the LT1815IS5#TRMPBF in its TSOT-23 package.
LT1815IS5#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT1815IS5#TRMPBF FAQ
1.How can I place an order for LT1815IS5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1815IS5#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 LT1815IS5#TRMPBF reliable?
The price and inventory of LT1815IS5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1815IS5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1815IS5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1815IS5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1815IS5#TRMPBF?
LT1815IS5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1815IS5#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 LT1815IS5#TRMPBF?
For technical support, including LT1815IS5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1815IS5#TRMPBF requirements.
6.How does Aetrix verify that LT1815IS5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1815IS5#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 LT1815IS5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1815IS5#TRMPBF?
All LT1815IS5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1815IS5#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 LT1815IS5#TRMPBF part is unused and in its original packaging.
Return procedure for LT1815IS5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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