Analog Devices Inc. LTC6240IS5#TRPBF
- Part No.:
- LTC6240IS5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LTC6240IS5#TRPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
LTC6240IS5#TRPBF from Analog Devices (formerly Linear Technology) is a single-channel, rail-to-rail output, low-noise CMOS operational amplifier in a 5-lead TSOT-23 package. It delivers 18MHz gain bandwidth, 10V/μs slew rate, 1pA max input bias current, and 550nVP-P 0.1Hz–10Hz noise - optimized for high-impedance sensor interfaces and precision signal conditioning in industrial and medical instrumentation.
For engineers reviewing the LTC6240IS5#TRPBF datasheet, LTC6240IS5#TRPBF pinout, LTC6240IS5#TRPBF application, or LTC6240IS5#TRPBF equivalent, key selection criteria include guaranteed 1pA max input bias current at –40°C to +85°C, rail-to-rail output swing within 30mV of rails, and stable unity-gain operation with <10nV/√Hz noise at 1kHz.
Technical Context
The LTC6240IS5#TRPBF employs a CMOS input stage with ultra-low input bias current and low input capacitance (3.5pF differential), enabling high-fidelity amplification of microamp-level currents from photodiodes or piezoelectric transducers. Its rail-to-rail output stage uses complementary NMOS/PMOS drivers to achieve 30mV headroom at both supply rails under load.
It features unity-gain stability without external compensation, supports supply voltages from 2.8V to 6V (single-supply) or ±2.5V (dual-supply), and maintains 125μV max input offset voltage and 2.5μV/°C max drift across its specified –40°C to +85°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 18MHz - enables stable closed-loop gain ≥10 at 1.8MHz or ≥2 at 9MHz for anti-aliasing or active filtering. |
| Input Bias Current | 1pA max (–40°C to +85°C) - preserves signal integrity in >1GΩ source impedance circuits like photodiode amps. |
| 0.1Hz–10Hz Noise | 550nVP-P - critical for DC-coupled, low-frequency measurement systems such as ECG front-ends. |
| Input Offset Voltage | 125μV max (–40°C to +85°C) - ensures ≤0.25% error in 50mV full-scale bridge sensor outputs. |
| Slew Rate | 10V/μs - supports 1VPP signals up to ~1.6MHz without slewing distortion in fast-settling data acquisition. |
| Supply Range | 2.8V to 6V - compatible with 3.3V and 5V logic domains while maintaining rail-to-rail output swing. |
| Output Swing | Within 30mV of V+ and V– - maximizes dynamic range in low-voltage systems (e.g., battery-powered IoT sensors). |
Pinout & Package
The LTC6240IS5#TRPBF is housed in a 5-lead ThinSOT™ (TSOT-23) package, 1mm height, with exposed pad electrically connected to V– for thermal and noise performance. Pin 1 is marked with a dot; pin numbering follows standard TSOT-23 orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - drives loads down to 1kΩ while maintaining rail-to-rail swing and stability. |
| 2 | V– | Negative supply - also connects to exposed thermal pad; must be tied to lowest system potential for optimal PSRR. |
| 3 | +IN | Non-inverting input - high-impedance CMOS node (1012Ω) with 3.5pF differential capacitance. |
| 4 | V+ | Positive supply - accepts 2.8V–6V; internal regulation ensures consistent biasing across supply range. |
| 5 | –IN | Inverting input - matched to +IN for <150μV channel-to-channel offset in dual/quad variants (not applicable here). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Swings to within 30mV of V+ and V– at 1mA load - preserves >98% of available signal range in 3.3V systems. |
| Ultra-low input bias current | Guaranteed ≤1pA max over –40°C to +85°C - eliminates leakage-induced offset in high-Z pH or ion-selective electrode circuits. |
| Low 0.1Hz–10Hz noise | 550nVP-P - enables sub-μV resolution in DC-coupled thermopile or strain gauge amplifiers without chopper artifacts. |
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in single-stage gain blocks. |
| Wide supply range | Operates from 2.8V to 6V - supports direct interface with Li-ion (3.0–4.2V) or USB-powered (5V) systems. |
Applications
| Photodiode Amplifier | Medical ECG Front-End |
|---|---|
Use Scenario: Amplifying weak current from reverse-biased silicon photodiode in spectrophotometer. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10MΩ feedback resistor, converting photocurrent to voltage. Use Value: 1pA max input bias current prevents dark-current error; 550nVP-P low-frequency noise ensures accurate absorbance measurement at 0.1–10Hz. |
Use Scenario: First-stage amplification of 0.5–2mV differential ECG signals in portable monitor. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance instrumentation amplifier input stage. Use Value: Rail-to-rail output swing maximizes ADC dynamic range on 3.3V supply; 125μV max offset minimizes baseline drift correction burden. |
| High-Impedance pH Sensor | Strain Gauge Signal Conditioning |
Use Scenario: Buffering mV-level output from glass pH electrode (≥1GΩ source impedance). IC Role / Device Role / Timing Role: Unity-gain buffer isolating electrode from downstream circuitry. Use Value: 1pA max input bias current avoids polarization error; low input capacitance (3.5pF) prevents phase shift in RC time constant. |
Use Scenario: Amplifying Wheatstone bridge output (±10mV full-scale) in industrial load cell. IC Role / Device Role / Timing Role: Precision gain stage with 100× non-inverting configuration. Use Value: 18MHz GBW supports fast step response (<1.1μs settling to 0.1%); 2.5μV/°C max drift limits temperature-induced gain error to <0.25% over 50°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-input-bias op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4530-1ARMZ | 0.1fA typical input bias current (vs 0.2pA typ for LTC6240IS5#TRPBF); higher 12.5MHz GBW; 5V-only supply. | Better for femtoamp-level current measurement; less suitable for 3.3V or wide-supply designs. | Select when sub-picoamp bias is mandatory and supply is fixed at 5V. |
| OPA377AIDBVR | 4.5MHz GBW (vs 18MHz); 0.2pA typ input bias; lower 1.2mA supply current (vs 2.4mA max). | Lower bandwidth acceptable for DC/low-frequency sensor buffering; better for ultra-low-power battery use. | Select when power budget <1.5mA per channel is critical and bandwidth ≤5MHz suffices. |
Compared with ADA4530-1ARMZ and OPA377AIDBVR, the LTC6240IS5#TRPBF uniquely balances 18MHz bandwidth, 1pA max bias, rail-to-rail output, and 2.8–6V supply flexibility - making it optimal for mid-speed, high-impedance precision analog front-ends where both speed and leakage immunity are required.
Availability
LTC6240IS5#TRPBF is available at Aetrix Electronics and suitable for photodiode amplification, medical ECG front-ends, and high-impedance pH sensor interfaces requiring stable component supply across industrial and healthcare product lifecycles.
Supply support for LTC6240IS5#TRPBF 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 LTC6240 series belongs to ADI's precision op amp portfolio, designed specifically for low-noise, low-input-bias, rail-to-rail signal conditioning in high-impedance sensor and instrumentation applications.
FAQ
What is the maximum input bias current specification for LTC6240IS5#TRPBF over temperature?
The LTC6240IS5#TRPBF guarantees ≤1pA maximum input bias current across its full operating temperature range of –40°C to +85°C, as confirmed in the Electrical Characteristics table for the I-grade version. This is a key differentiator for photodiode and electrochemical sensor applications where leakage current directly impacts accuracy.
Does LTC6240IS5#TRPBF support dual-supply operation?
Yes, the LTC6240IS5#TRPBF supports dual-supply operation up to ±2.5V (total 5V), as verified in the Absolute Maximum Ratings and Electrical Characteristics sections. It operates with V+ = +2.5V and V– = –2.5V, maintaining rail-to-rail output swing and 1pA max input bias current under these conditions.
What is the minimum supply voltage for reliable operation of LTC6240IS5#TRPBF?
The LTC6240IS5#TRPBF is fully specified down to 2.8V total supply voltage (V+ to V–), with guaranteed performance including 125μV max input offset, 18MHz gain bandwidth, and rail-to-rail output swing. Operation below 2.8V is not characterized and may degrade PSRR, CMRR, or output drive capability.
Is LTC6240IS5#TRPBF unity-gain stable without external compensation?
Yes, the LTC6240IS5#TRPBF is explicitly designed for unity-gain stability, as stated in the product description and confirmed by stability testing in the datasheet. No external compensation capacitor or resistor is required - enabling compact, low-component-count designs for gain-of-1 buffers and followers.
What package type and dimensions does LTC6240IS5#TRPBF use?
The LTC6240IS5#TRPBF uses a 5-lead ThinSOT™ (TSOT-23) package, measuring 2.9mm × 1.6mm × 1.0mm (L × W × H), with pin pitch of 0.95mm. The exposed pad is internally connected to V– and may be soldered to PCB ground for improved thermal performance and noise immunity.
LTC6240IS5#TRPBF 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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 18 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 2mA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.8 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LTC6240IS5#TRPBF FAQ
1.How can I place an order for LTC6240IS5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6240IS5#TRPBF 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 LTC6240IS5#TRPBF reliable?
The price and inventory of LTC6240IS5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6240IS5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6240IS5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6240IS5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6240IS5#TRPBF?
LTC6240IS5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6240IS5#TRPBF 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 LTC6240IS5#TRPBF?
For technical support, including LTC6240IS5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6240IS5#TRPBF requirements.
6.How does Aetrix verify that LTC6240IS5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6240IS5#TRPBF 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 LTC6240IS5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6240IS5#TRPBF?
All LTC6240IS5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6240IS5#TRPBF, 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 LTC6240IS5#TRPBF part is unused and in its original packaging.
Return procedure for LTC6240IS5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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