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Analog Devices Inc. LTC6240CS5#TRPBF
- Part No.:
- LTC6240CS5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LTC6240CS5#TRPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
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Product details
Overview
LTC6240CS5#TRPBF from Analog Devices (formerly Linear Technology) is a single-channel, rail-to-rail output CMOS operational amplifier optimized for low-noise, high-impedance signal conditioning. It delivers 18MHz gain bandwidth, 10V/μs slew rate, 550nVP-P 0.1Hz–10Hz noise, 125μV max input offset voltage, and guaranteed ≤1pA input bias current at 25°C - enabling precision photodiode and transducer amplification in battery-powered instrumentation.
For engineers reviewing the LTC6240CS5#TRPBF datasheet, LTC6240CS5#TRPBF pinout, LTC6240CS5#TRPBF application, or LTC6240CS5#TRPBF equivalent, key selection criteria include ultra-low input bias current for high-Z sensor interfaces, rail-to-rail output swing within 30mV of supply rails, 2.8V to 6V single-supply operation, and SOT-23-5 packaging for space-constrained PCB layouts.
Technical Context
The LTC6240CS5#TRPBF employs a proprietary CMOS input stage with guarded input structure to achieve sub-picoampere bias current and 3.5pF differential input capacitance - critical for stability with high-source-impedance sensors like photodiodes. Its unity-gain-stable architecture supports direct connection to capacitive loads up to 5pF without external compensation.
It features an output stage capable of sourcing/sinking ≥5mA while swinging to within 30mV of V+ and V− rails under load, and operates across –40°C to 85°C (I-grade) with guaranteed 2.8V minimum supply voltage and 80dB PSRR over 1kHz–1MHz - making it suitable for mixed-signal front-ends where supply rejection and dynamic range are co-constrained.
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 (25°C) - preserves signal integrity in >1GΩ source impedance circuits (e.g., pH electrodes, piezoresistive sensors). |
| 0.1Hz–10Hz Noise | 550nVP-P - ensures <1μV total integrated noise in DC–10Hz medical bio-signal amplifiers (ECG, EEG). |
| Input Offset Voltage | 125μV max - reduces initial error to <0.25% of full-scale in 50mV-range transducer outputs. |
| Supply Voltage Range | 2.8V to 6V - supports direct operation from single Li-ion (3.0–4.2V) or dual AA (3.0V) supplies without regulation. |
| Output Swing | Within 30mV of rails at 5mA - maximizes usable dynamic range in 3.3V systems (e.g., 0.03–3.27V output span). |
| Input Common-Mode Range | Extends to V− - allows ground-referenced inputs in single-supply configurations without level-shifting. |
Pinout & Package
Package: 5-lead TSOT-23 (S5), 1mm height, lead-free, tape-and-reel. Thermal resistance θJA = 250°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Capable of driving 1kΩ loads with <1100ns 0.1% settling time; rail-to-rail swing minimizes headroom loss. |
| 2 (V−) | Negative supply | Reference for internal biasing; underside thermal pad (if present) connects to V− for improved thermal performance. |
| 3 (+IN) | Non-inverting input | High-impedance node (1012Ω); 3.5pF differential capacitance requires careful layout guard ring for stability. |
| 4 (–IN) | Inverting input | Matches +IN in bias current and capacitance; used for feedback network connection in transimpedance configurations. |
| 5 (V+) | Positive supply | Accepts 2.8V–6V; PSRR >80dB ensures immunity to digital supply noise in mixed-signal PCBs. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 2.8V–6V supply dynamic range - eliminates need for dual supplies in portable data acquisition. |
| Ultra-low 1pA input bias current | Enables accurate amplification of picoamp-level photocurrents without significant I×R error in transimpedance stages. |
| 550nVP-P 0.1Hz–10Hz noise | Supports sub-microvolt resolution in DC-coupled sensor interfaces (e.g., strain gauge bridges, thermopiles). |
| Unity-gain stable | Operates without external compensation in gain-of-1 configurations - simplifies design of buffer stages and active filters. |
| Specified from –40°C to 85°C | Validated performance across industrial temperature range - suitable for embedded environmental monitoring hardware. |
Applications
| Photodiode Amplifier | Medical Bio-Signal Acquisition |
|---|---|
|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximetry or spectroscopy modules. IC Role / Device Role / Timing Role: Transimpedance amplifier converting 10pA–1nA photocurrent to 0.1–1V output with minimal dark-current error. Use Value: 1pA input bias current prevents >10mV offset drift in 100MΩ feedback resistor; 550nVP-P noise ensures SNR >70dB at 1Hz. |
Use Scenario: Front-end amplification of ECG/EEG electrode signals in portable patient monitors. IC Role / Device Role / Timing Role: High-input-impedance, low-noise first-stage amplifier with DC-coupled input and rail-to-rail output. Use Value: Input common-mode range to V− allows direct electrode connection; 125μV offset limits baseline wander to <0.5% of 25mV ECG amplitude. |
| High-Impedance Transducer Interface | Low-Power Sensor Signal Conditioning |
|
Use Scenario: Buffering output of ceramic humidity sensors or MEMS pressure elements with >1GΩ output impedance. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-Z sensor from downstream ADC input capacitance. Use Value: 3.5pF input capacitance avoids resonance with sensor's inherent capacitance; 2.4mA supply current enables 10-year battery life in 10s-Hz sampling systems. |
Use Scenario: Signal conditioning in battery-operated IoT nodes measuring temperature, gas concentration, or vibration. IC Role / Device Role / Timing Role: Low-power, precision op amp powering analog front-end before SAR ADC digitization. Use Value: 2.8V minimum supply allows direct Li-ion operation; rail-to-rail output maximizes ADC utilization without external level-shifting. |
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 bias current (1000× lower), but 4.5MHz GBW and 5.5V max supply - trades speed for ultra-high-Z fidelity. | Better for femtoamp-level electrometer applications; unsuitable for >5MHz signal paths or 6V supplies. | Select when sensor impedance exceeds 10GΩ and bandwidth <5MHz suffices; avoid if 18MHz GBW or 6V operation is required. |
| OPA377AIDBVR | 2.5pA bias current, 10MHz GBW, 1.2mA supply - lower cost but higher noise (7.5nV/√Hz) and no guaranteed 1pA spec. | Suitable for general-purpose low-noise amplification where sub-pA bias is not mandatory. | Choose for cost-sensitive industrial sensors where 2.5pA bias and 10MHz bandwidth meet requirements; not for photodiode or precision transducer use. |
Compared with ADA4530-1ARMZ and OPA377AIDBVR, the LTC6240CS5#TRPBF uniquely balances 1pA input bias, 18MHz bandwidth, and 2.8–6V operation in a 5-pin SOT-23 - making it optimal for compact, battery-powered, high-impedance analog front-ends requiring both speed and precision.
Availability
LTC6240CS5#TRPBF is available at Aetrix Electronics and suitable for photodiode amplification, medical bio-signal acquisition, and low-power sensor signal conditioning requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LTC6240CS5#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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, renowned for high-performance op amps, references, and signal conditioning ICs targeting demanding industrial and medical applications.
The LTC6240 series belongs to Linear's ultra-low-input-bias, low-noise op amp product line, designed specifically for interfacing with high-impedance sensors (photodiodes, piezoelectrics, electrochemical cells) in portable and precision instrumentation.
FAQ
What is the maximum guaranteed input bias current for LTC6240CS5#TRPBF at 25°C?
The LTC6240CS5#TRPBF guarantees ≤1pA maximum input bias current at 25°C, as specified in the Electrical Characteristics table for the LTC6240 family. This value is validated across the SOT-23-5 package variant and forms the basis for its suitability in photodiode and high-impedance transducer applications where leakage current must be minimized.
Does LTC6240CS5#TRPBF support rail-to-rail input common-mode range?
No, the LTC6240CS5#TRPBF does not support rail-to-rail input common-mode range. Its input common-mode voltage extends to the negative supply rail (V−) but only up to 3.5V below the positive rail (V+) under ±5V operation, or 1.5V below V+ under 3V single-supply conditions - as confirmed in the Electrical Characteristics tables. The output, however, is fully rail-to-rail.
Can LTC6240CS5#TRPBF operate from a single 3.3V supply?
Yes, the LTC6240CS5#TRPBF is fully specified for 3V and 5V single-supply operation, with a minimum supply voltage of 2.8V. At 3.3V, it delivers rail-to-rail output swing within 30mV of both rails at 5mA load, maintains 18MHz gain bandwidth, and retains ≤1pA input bias current - making it ideal for modern low-voltage embedded systems.
What is the typical 0.1Hz–10Hz noise voltage of LTC6240CS5#TRPBF?
The typical 0.1Hz–10Hz noise voltage of the LTC6240CS5#TRPBF is 550nVP-P, as stated in the Features section and confirmed in the Electrical Characteristics tables. This value applies across all package variants including the SOT-23-5, and is measured under standard conditions (VS = 5V, VCM = 2.5V, TA = 25°C).
Is LTC6240CS5#TRPBF unity-gain stable?
Yes, the LTC6240CS5#TRPBF is explicitly specified as unity-gain stable in the product description and Electrical Characteristics. It achieves stable operation with closed-loop gains ≥1 without requiring external compensation components, enabling straightforward implementation as a buffer or in transimpedance amplifier configurations.
LTC6240CS5#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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LTC6240CS5#TRPBF FAQ
1.How can I place an order for LTC6240CS5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6240CS5#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 LTC6240CS5#TRPBF reliable?
The price and inventory of LTC6240CS5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6240CS5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6240CS5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6240CS5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6240CS5#TRPBF?
LTC6240CS5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6240CS5#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 LTC6240CS5#TRPBF?
For technical support, including LTC6240CS5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6240CS5#TRPBF requirements.
6.How does Aetrix verify that LTC6240CS5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6240CS5#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 LTC6240CS5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6240CS5#TRPBF?
All LTC6240CS5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6240CS5#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 LTC6240CS5#TRPBF part is unused and in its original packaging.
Return procedure for LTC6240CS5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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