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Analog Devices Inc. LTC6241CS8#TRPBF
- Part No.:
- LTC6241CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC6241CS8#TRPBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,301
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Product details
Overview
LTC6241CS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise CMOS operational amplifier in an 8-pin SOIC package. It delivers 18MHz gain bandwidth, 10V/μs slew rate, 550nVP-P 0.1Hz–10Hz noise, 125μV max input offset voltage, and 1pA max input bias current - enabling precision signal conditioning in high-impedance sensor interfaces and medical front-ends.
For engineers reviewing the LTC6241CS8#TRPBF datasheet, LTC6241CS8#TRPBF pinout, LTC6241CS8#TRPBF application, or LTC6241CS8#TRPBF equivalent, key selection criteria include guaranteed 1pA input bias current over temperature, rail-to-rail output swing within 30mV of rails, 2.8V to 6V single-supply operation, and dual-channel matching for differential signal paths.
Technical Context
The LTC6241CS8#TRPBF integrates two independent unity-gain-stable amplifiers with CMOS input stages, supporting single-supply operation down to 2.8V and full specification at 3V and 5V. Its input common-mode range extends to the negative rail, and output swings to within 30mV of both supply rails - critical for maximizing dynamic range in low-voltage systems.
It features matched channel performance (≤125μV VOS match, ≤95dB CMRR match), low 7nV/√Hz input voltage noise density at 1kHz, and 0.56fA/√Hz input current noise - optimized for photodiode, charge-coupled, and transducer amplification where leakage and noise dominate error budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 18MHz - supports stable closed-loop gain ≥10 at 1.8MHz or ≥2 at 9MHz for fast signal acquisition. |
| Input Offset Voltage | 125μV max (0°C to 70°C) - enables DC-coupled amplification of mV-level sensor signals without significant baseline error. |
| Input Bias Current | 1pA max - preserves signal integrity in >1GΩ source impedances (e.g., piezoelectric sensors, pH electrodes). |
| 0.1Hz–10Hz Noise | 550nVP-P - minimizes low-frequency drift in precision instrumentation and medical ECG/EEG front-ends. |
| Supply Voltage Range | 2.8V to 6V - operates from single Li-ion cells or regulated 3.3V/5V rails without level-shifting circuitry. |
| Output Swing | Within 30mV of rails - delivers >5.94Vpp output on 6V supply, maximizing SNR in ADC driver applications. |
| Slew Rate | 10V/μs - settles 2V step in <1.1μs at 0.1% (per datasheet ts = 1100ns), suitable for multiplexed data acquisition. |
Pinout & Package
Package: 8-lead plastic SOIC (S8), 150°C max junction temperature, θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 10mA; rail-to-rail swing enables full-scale ADC interfacing. |
| 2 | V− | Negative supply rail - also serves as reference for input common-mode range extension to ground. |
| 3 | +IN A | Non-inverting input of Amp A - high-impedance CMOS node (1012Ω) for minimal loading of high-Z sources. |
| 4 | −IN A | Inverting input of Amp A - matched to +IN A for precision differential gain configurations. |
| 5 | −IN B | Inverting input of Amp B - electrically isolated from Amp A; supports dual-channel signal processing. |
| 6 | +IN B | Non-inverting input of Amp B - identical input structure to +IN A; enables matched dual instrumentation amps. |
| 7 | V+ | Positive supply rail - accepts 2.8V–6V single supply or ±2.5V split supply (HV variant required for ±5V). |
| 8 | OUT B | Amplifier B output - independently buffered; allows simultaneous processing of two analog channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Swings within 30mV of V+ and V− - preserves >99% of supply voltage headroom for maximum signal fidelity. |
| Ultra-low input bias current | 1pA max (guaranteed) - eliminates significant error in photodiode transimpedance amplifiers with RF ≥ 100MΩ. |
| Low 0.1Hz–10Hz noise | 550nVP-P - reduces baseline wander in DC-coupled biomedical sensing (e.g., EEG, EMG). |
| Channel-to-channel matching | ≤125μV VOS match, ≤95dB CMRR match - enables accurate dual-amplifier difference amplification without trimming. |
| Unity-gain stability | Stable at gain = 1 with 5pF capacitive load - simplifies design of buffers and active filters without external compensation. |
Applications
| Photodiode Amplifier | Medical Instrumentation |
|---|---|
Use Scenario: Converting weak current from silicon photodiodes into precise voltage for optical smoke detection or pulse oximetry. IC Role / Device Role: Transimpedance amplifier (TIA) with ultra-low input bias current and low 1/f noise. Use Value: 1pA max IB prevents saturation with high-value feedback resistors (≥1GΩ); 550nVP-P noise ensures sub-picoamp resolution. | Use Scenario: Front-end amplification of low-amplitude bioelectric signals (ECG, EEG) in portable diagnostic devices. IC Role / Device Role: Dual-channel DC-coupled instrumentation amplifier core with matched offset and CMRR. Use Value: 125μV max VOS and ≤125μV match minimize differential offset; rail-to-rail output drives 16-bit SAR ADCs directly. |
| High-Impedance Transducer Interface | Low-Noise Signal Processing |
Use Scenario: Conditioning output from pH electrodes, piezoresistive pressure sensors, or MEMS accelerometers with GΩ-level source impedance. IC Role / Device Role: High-input-impedance buffer and gain stage preserving signal integrity against leakage-induced errors. Use Value: 1012Ω input resistance and 1pA IB prevent signal attenuation and DC drift in high-Z sensor circuits. | Use Scenario: Post-processing stage in battery-powered data loggers requiring low power, low noise, and wide bandwidth. IC Role / Device Role: Dual-channel signal conditioner for multiplexed analog inputs prior to ADC sampling. Use Value: 18MHz GBW and 10V/μs slew rate support 100ksps sampling of 10kHz signals; 2.2mA per amp enables >100hr operation on coin cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4898-2ARMZ | Higher 3.9nV/√Hz noise (1kHz), 20MHz GBW, ±3V to ±5.5V only - no 2.8V–6V single-supply support. | Targeted at high-speed video and RF IF stages, not ultra-low-bias sensor interfaces. | Select when higher speed and drive capability outweigh low-bias and low-noise requirements. |
| OPA2189IDR | Zero-drift architecture (0.003μV/°C drift), 5.2nV/√Hz noise, 12MHz GBW, 1.3pA IB - trades ultra-low bias for near-zero drift. | Better for DC-precision applications with wide temperature ranges; less optimal for high-Z AC-coupled sensors. | Select when long-term DC stability dominates over sub-picoamp bias current. |
Compared with ADA4898-2ARMZ and OPA2189IDR, the LTC6241CS8#TRPBF uniquely balances picoampere input bias, sub-μV offset, and 18MHz bandwidth in a 2.8V–6V single-supply SOIC package - making it the preferred choice for battery-powered, high-impedance sensor signal chains where leakage and low-frequency noise are primary error sources.
Availability
LTC6241CS8#TRPBF is available at Aetrix Electronics and suitable for photodiode amplification, medical instrumentation front-ends, and high-impedance transducer interfaces requiring stable component supply across industrial and healthcare OEM programs.
Supply support for LTC6241CS8#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, serving industrial, automotive, communications, and healthcare markets.
The LTC6241 belongs to ADI's precision low-noise op amp product line, designed specifically for high-impedance, low-power, and low-frequency precision signal conditioning in portable and battery-operated instrumentation.
FAQ
What is the maximum input bias current specification for LTC6241CS8#TRPBF over its operating temperature range?
The LTC6241CS8#TRPBF has a maximum input bias current of 1pA over the 0°C to 70°C specified temperature range. This value is guaranteed per the datasheet's Electrical Characteristics table for the LTC6241 S8 package under standard conditions (VS = 5V, TA = 25°C and over temperature). At –40°C to 85°C, the max is 75pA - but the CS8 grade is rated only for 0°C to 70°C.
Does LTC6241CS8#TRPBF support true rail-to-rail input common-mode range?
No, the LTC6241CS8#TRPBF does not support rail-to-rail input common-mode range. Its input common-mode voltage range extends to the negative rail (V−) but only up to 3.5V below V+ (i.e., VCM = 0V to 3.5V with VS = 5V), as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. The input stage is CMOS-based and does not include PMOS/NMOS complementary pairs for full rail coverage.
Can LTC6241CS8#TRPBF operate from a single 3.3V supply?
Yes, LTC6241CS8#TRPBF is fully specified and guaranteed to operate from a single 3.3V supply (within its 2.8V to 6V range). Datasheet Electrical Characteristics are explicitly tested at VS = 3V and VS = 5V, including parameters like input offset voltage, noise, GBW, and output swing - confirming robust functionality at 3.3V for low-power embedded systems.
What is the typical supply current per amplifier for LTC6241CS8#TRPBF at 25°C and 5V supply?
The typical supply current per amplifier for LTC6241CS8#TRPBF is 2.2mA at TA = 25°C and VS = 5V, as stated in the Electrical Characteristics table (IS = 2.2mA typ, 2.3mA max for 0°C to 70°C). This results in ~4.4mA total quiescent current for the dual amplifier, enabling efficient operation in power-constrained designs.
Is LTC6241CS8#TRPBF pin-compatible with other members of the LTC624x family in SO-8 packages?
Yes, LTC6241CS8#TRPBF shares identical pinout and footprint with all SO-8 variants in the LTC624x family (e.g., LTC6240CS8, LTC6242CGN is SSOP/DFN, not pin-compatible). Pin assignments for OUT A, V−, +IN A, −IN A, −IN B, +IN B, V+, and OUT B are standardized across LTC6240/LTC6241 SO-8 versions - allowing direct substitution between single/dual variants when channel count permits.
LTC6241CS8#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:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 18 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 2.5mA (x2 Channels)
- 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:
- 8-SO
LTC6241CS8#TRPBF FAQ
1.How can I place an order for LTC6241CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6241CS8#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 LTC6241CS8#TRPBF reliable?
The price and inventory of LTC6241CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6241CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6241CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6241CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6241CS8#TRPBF?
LTC6241CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6241CS8#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 LTC6241CS8#TRPBF?
For technical support, including LTC6241CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6241CS8#TRPBF requirements.
6.How does Aetrix verify that LTC6241CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6241CS8#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 LTC6241CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6241CS8#TRPBF?
All LTC6241CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6241CS8#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 LTC6241CS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6241CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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