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Analog Devices Inc. LTC6240HS8#TRPBF
- Part No.:
- LTC6240HS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC6240HS8#TRPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,171
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Product details
Overview
LTC6240HS8#TRPBF from Analog Devices (formerly Linear Technology) is a single-channel, rail-to-rail output, low-noise CMOS operational amplifier optimized for precision signal conditioning in high-impedance sensor interfaces. 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 –40°C to 125°C. It operates from 2.8V to 6V supplies and drives outputs within 30mV of rails.
For engineers reviewing the LTC6240HS8#TRPBF datasheet, LTC6240HS8#TRPBF pinout, LTC6240HS8#TRPBF application, or LTC6240HS8#TRPBF equivalent, key selection criteria include ultra-low input bias current for photodiode amplification, low 1/f noise for DC-coupled instrumentation, rail-to-rail output swing in low-voltage systems, and H-grade temperature qualification for automotive and industrial control environments.
Technical Context
The LTC6240HS8#TRPBF employs a proprietary CMOS input stage with guarded input transistors to achieve sub-picoampere bias current across its full –40°C to 125°C operating range. Its unity-gain-stable architecture supports wideband closed-loop configurations without external compensation.
It features a fully differential input common-mode range extending to the negative rail and rail-to-rail output stage capable of sourcing/sinking ≥5mA while maintaining <325mV saturation voltage at 5mA load - enabling direct interfacing with ADC drivers and active filters in 3V/5V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 18MHz - enables stable unity-gain operation up to ~18MHz or closed-loop gains >10 at multi-MHz frequencies. |
| Input Bias Current | ≤1pA max (–40°C to 125°C) - preserves signal integrity in femtoamp-level photodiode and piezoelectric sensor front-ends. |
| 0.1Hz–10Hz Noise | 550nVP-P - minimizes drift and baseline wander in precision DC-coupled medical and analytical instrumentation. |
| Input Offset Voltage | ≤125μV max (–40°C to 125°C) - reduces calibration burden and improves absolute accuracy in 16-bit+ data acquisition systems. |
| Supply Range | 2.8V to 6V - supports battery-powered and single-supply industrial sensors without level-shifting circuitry. |
| Output Swing | Within 30mV of rails - maximizes dynamic range in low-voltage ADC driver stages and active filter implementations. |
| Slew Rate | 10V/μs - ensures faithful reproduction of fast transient signals in pulse amplification and active anti-aliasing filters. |
Pinout & Package
The LTC6240HS8#TRPBF is housed in an 8-pin plastic SO (Small Outline) package with exposed pad thermal enhancement (θJA = 190°C/W). Pin 1 is marked with a dot; the package is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - drives loads up to 10kΩ with rail-to-rail swing and <325mV saturation at 5mA sink/source. |
| 2 | V– | Negative supply rail - connects to ground or negative supply; input common-mode extends to this rail. |
| 3 | +IN | Non-inverting input - high-impedance CMOS node (RIN ≥ 1TΩ) with 3.5pF differential capacitance. |
| 4 | –IN | Inverting input - matched to +IN for low offset drift; used in transimpedance and difference amplifier topologies. |
| 5 | NC | No connect - internally unconnected; must be left floating or tied to V– per layout guidelines. |
| 6 | NC | No connect - internally unconnected; must be left floating or tied to V– per layout guidelines. |
| 7 | V+ | Positive supply rail - accepts 2.8V to 6V; PSRR ≥ 78dB over full supply range. |
| 8 | NC | No connect - internally unconnected; must be left floating or tied to V– per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | Guaranteed ≤1pA max over –40°C to 125°C - eliminates leakage-induced errors in high-Z sensor nodes. |
| Low 1/f noise | 550nVP-P (0.1Hz–10Hz) - critical for stable baseline in ECG, pH meters, and strain gauge bridges. |
| Rail-to-rail output | Swings within 30mV of V+ and V– at no load - preserves >98% of supply voltage as usable signal range. |
| H-grade temperature rating | Specified from –40°C to 125°C - qualified for under-hood automotive, motor control feedback, and industrial PLC modules. |
| Unity-gain stability | Stable with capacitive loads ≤5pF - simplifies PCB layout for sensor interface and ADC driver applications. |
Applications
| Photodiode Amplifier | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximetry or spectroscopy systems. IC Role / Device Role: Transimpedance amplifier converting photocurrent to voltage with minimal input error. Use Value: ≤1pA input bias current prevents signal loss; 550nVP-P low-frequency noise ensures clean DC-coupled optical measurements. | Use Scenario: Front-end signal conditioning for ECG electrode inputs requiring high common-mode rejection and low drift. IC Role / Device Role: Precision DC-coupled amplifier with rail-to-rail output driving 16-bit SAR ADCs. Use Value: ≤125μV max offset and 2.5μV/°C drift minimize calibration frequency; H-grade temp range supports patient-monitor housing. |
| High-Impedance Transducer Interface | Low-Noise Signal Processing |
Use Scenario: Buffering outputs from piezoresistive pressure sensors or MEMS accelerometers with GΩ-level source impedances. IC Role / Device Role: Unity-gain buffer isolating high-Z source from downstream filtering and digitization stages. Use Value: Input resistance ≥1TΩ and 3.5pF input capacitance prevent resonance and phase shift in sensor cable-driven circuits. | Use Scenario: Active filtering and gain staging in portable gas analyzers or environmental monitoring equipment. IC Role / Device Role: Low-noise, wideband op amp in 2nd-order Sallen-Key filters and programmable-gain amplifier stages. Use Value: 18MHz GBW and 10V/μs slew rate support accurate 1MHz signal reconstruction; rail-to-rail output avoids clipping in 3.3V systems. |
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 |
|---|---|---|---|
| ADA4530-1ARZ | 0.1fA typical input bias current (vs. 1pA max), higher 1/f noise (1.8μVP-P), 2MHz GBW | Better for femtoamp current measurement; less suitable for >1MHz signal bandwidth requirements | Select when ultra-low bias dominates over speed/noise; verify layout guard ring implementation. |
| OPA377AIDR | 0.2pA typical input bias (not specified max), 7.5MHz GBW, 3.5V/μs slew rate, wider 2.2V–5.5V supply | Lower power (760μA vs. 2.4mA), but insufficient for high-speed or high-temp industrial use | Prefer for battery-powered portable instruments where power > speed; not rated for 125°C operation. |
Compared with ADA4530-1ARZ and OPA377AIDR, the LTC6240HS8#TRPBF uniquely balances 1pA max input bias, 18MHz bandwidth, and –40°C to 125°C qualification - making it optimal for automotive sensor modules and industrial data loggers requiring both precision and robustness.
Availability
LTC6240HS8#TRPBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical instrumentation front-ends, and high-impedance transducer interfaces requiring stable component supply across extended temperature ranges.
Supply support for LTC6240HS8#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 technologies, acquired Linear Technology in 2017 to expand precision amplifier and power management portfolios.
The LTC6240 family belongs to ADI's precision op amp product line, designed specifically for demanding sensor interface, instrumentation, and industrial control applications where low input bias, low noise, and wide temperature operation are non-negotiable.
FAQ
What is the maximum guaranteed input bias current for LTC6240HS8#TRPBF over its full operating temperature range?
The LTC6240HS8#TRPBF guarantees ≤1pA maximum input bias current across its full –40°C to 125°C operating temperature range, as specified in the Electrical Characteristics table for the H-grade version. This value is tested and guaranteed - not typical - ensuring design margin for high-impedance sensor applications.
Does LTC6240HS8#TRPBF support rail-to-rail input common-mode voltage?
The LTC6240HS8#TRPBF supports rail-to-rail output swing but does not offer rail-to-rail input common-mode range. Its input common-mode voltage extends to the negative rail (V–) but only up to 3.5V below the positive rail (V+) under ±5V operation, or to 1.5V above V– under 3V single-supply conditions. Full common-mode range requires external level-shifting.
Can LTC6240HS8#TRPBF drive a 1000pF capacitive load stably?
No - the LTC6240HS8#TRPBF is unity-gain stable only with capacitive loads ≤5pF. Driving 1000pF directly will cause severe peaking and potential oscillation. For heavy capacitive loads, use a series isolation resistor (e.g., 50Ω–100Ω) between the LTC6240HS8#TRPBF output and the load, or select a capacitor-drive-optimized op amp like the LTC6228.
What is the minimum supply voltage required for proper operation of LTC6240HS8#TRPBF?
The LTC6240HS8#TRPBF requires a minimum total supply voltage of 2.8V (i.e., V+ – V– ≥ 2.8V) across its full –40°C to 125°C operating range. It is fully specified at 3V and 5V supplies, and performance parameters such as GBW, slew rate, and output swing are guaranteed down to this 2.8V threshold.
Is LTC6240HS8#TRPBF pin-compatible with other members of the LTC624x family?
No - the LTC6240HS8#TRPBF (single, SO-8) is not pin-compatible with the dual LTC6241 or quad LTC6242, which share different pinouts even in SO-8 packages. The LTC6240HS8#TRPBF uses pins 1–4 and 7–8; pins 5 and 6 are NC. Always consult the specific pin configuration diagram for each variant before PCB layout.
LTC6240HS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC6240HS8#TRPBF FAQ
1.How can I place an order for LTC6240HS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6240HS8#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 LTC6240HS8#TRPBF reliable?
The price and inventory of LTC6240HS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6240HS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6240HS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6240HS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6240HS8#TRPBF?
LTC6240HS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6240HS8#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 LTC6240HS8#TRPBF?
For technical support, including LTC6240HS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6240HS8#TRPBF requirements.
6.How does Aetrix verify that LTC6240HS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6240HS8#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 LTC6240HS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6240HS8#TRPBF?
All LTC6240HS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6240HS8#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 LTC6240HS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6240HS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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