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Analog Devices Inc. LTC6241HS8#TRPBF
- Part No.:
- LTC6241HS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC6241HS8#TRPBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,201
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Product details
Overview
LTC6241HS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual, 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 1pA max input bias current over –40°C to 125°C. It is widely used in photodiode amplifiers and medical instrumentation requiring stable DC accuracy and low-frequency noise performance.
For engineers reviewing the LTC6241HS8#TRPBF datasheet, LTC6241HS8#TRPBF pinout, LTC6241HS8#TRPBF application, or LTC6241HS8#TRPBF equivalent, key selection criteria include guaranteed 125μV max VOS at H-grade temperature, 1pA max IB over full range, rail-to-rail output swing within 30mV of rails, and SO-8 package compatibility with guard ring PCB layouts.
Technical Context
The LTC6241HS8#TRPBF implements a unity-gain-stable CMOS input stage with ultra-low input bias current and matched P-channel input transistors enabling sub-picoampere operation across its full –40°C to 125°C operating range. Its architecture supports single-supply operation from 2.8V to 6V and includes internal compensation for stability with capacitive loads up to 5pF.
It features independent dual amplifiers in an 8-pin SO package with non-inverting and inverting inputs, output, and shared V+ and V– pins - no internal connections between channels beyond common supply rails. The device guarantees 80dB minimum PSRR and 78dB minimum CMRR over temperature, supporting precision DC-coupled signal chains in noisy industrial environments.
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 Offset Voltage (Max) | 125μV - ensures ≤0.25% error in 50mV full-scale sensor outputs without trimming. |
| Input Bias Current (Max) | 1pA - preserves signal integrity in >1GΩ source impedances (e.g., piezoelectric sensors, pH electrodes). |
| 0.1Hz–10Hz Noise | 550nVP-P - critical for DC-stable amplification of slow-varying bio-signals like ECG or strain gauge bridges. |
| Output Swing (to Rails) | Within 30mV - maximizes dynamic range in 3V systems, delivering >2.94Vpp output with 3V supply. |
| Supply Range | 2.8V to 6V - supports direct interface with Li-ion battery-powered portable instruments and 3.3V logic domains. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive, industrial motor control, and downhole sensing applications. |
Pinout & Package
Package: 8-lead plastic SO (Small Outline), JEDEC MS-012AC, 150°C max junction temperature, θJA = 190°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load; rail-to-rail swing supports low-headroom signal chains. |
| 2 | V– | Negative supply - connects to ground or negative rail; underside metal pad optional for thermal enhancement. |
| 3 | +IN A | Non-inverting input A - high-impedance CMOS node; requires guard ring layout for leakage control. |
| 4 | –IN A | Inverting input A - differential pair input; matched to +IN A for <40μV channel-to-channel VOS match. |
| 5 | –IN B | Inverting input B - electrically isolated from Channel A; enables dual-opamp configurations like I/V + buffer. |
| 6 | +IN B | Non-inverting input B - identical specs to +IN A; supports independent second signal path. |
| 7 | OUT B | Amplifier B output - fully independent output stage; no crosstalk with OUT A at <–80dB up to 1MHz. |
| 8 | V+ | Positive supply - accepts 2.8V–6V; decoupling capacitor required within 1cm for PSRR optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Swings within 30mV of V+ and V– rails at 1mA load, preserving >98% of supply voltage as usable signal range in 3V systems. |
| Ultra-low input bias current | Guaranteed ≤1pA max over –40°C to 125°C, enabling accurate amplification of nanoamp-level photocurrents without guard trace compromises. |
| Low 1/f noise | 550nVP-P (0.1Hz–10Hz) ensures minimal baseline drift in DC-coupled medical front-ends such as EEG or EMG amplifiers. |
| Unity-gain stable | No external compensation required - simplifies design of gain-of-1 buffers, active filters, and transimpedance stages with feedback capacitance ≤5pF. |
| H-grade temperature qualification | Full electrical specifications guaranteed from –40°C to 125°C, eliminating derating concerns in engine control units or industrial PLC modules. |
Applications
| Photodiode Amplifier | Medical Instrumentation |
|---|---|
Use Scenario: Converting weak, high-impedance photocurrents (e.g., from SiPM or avalanche photodiodes) into stable voltage signals. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with ultra-low IB and low VOS to minimize dark current error and DC offset drift. Use Value: 1pA max IB prevents photocurrent corruption; 550nVP-P noise ensures detection of sub-picoamp signals in spectroscopy systems. | Use Scenario: Front-end amplification of low-amplitude, low-frequency biopotentials (ECG, EEG) in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier input stage with rail-to-rail output for ADC driver interface. Use Value: 125μV max VOS and 2.5μV/°C max drift maintain calibration stability across patient body temperatures and ambient conditions. |
| High-Impedance Transducer Interface | Low-Noise Signal Processing |
Use Scenario: Conditioning outputs from pH electrodes, ion-selective sensors, or ceramic strain gauges with GΩ-level source impedances. IC Role / Device Role / Timing Role: High-Z buffer and gain stage where input loading must be minimized to avoid measurement error. Use Value: 1pA max IB and 1012Ω input resistance preserve sensor open-circuit voltage integrity without active guarding. | Use Scenario: Active filtering and signal conditioning in battery-powered data loggers measuring environmental parameters (temperature, humidity, gas concentration). IC Role / Device Role / Timing Role: Dual-channel signal conditioner - one amp for sensor I/V conversion, second for reference buffering or filter implementation. Use Value: Dual SO-8 configuration reduces board space vs two discrete op-amps; 18MHz GBW supports 2nd-order anti-aliasing at 10kHz sampling rates. |
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 |
|---|---|---|---|
| OPA2189IDR | Zero-drift architecture; 0.005μV/°C max drift vs 2.5μV/°C for LTC6241HS8#TRPBF; higher 1/f noise (200nVP-P) but lower broadband noise (5.2nV/√Hz). | Preferred for ultra-stable DC gain paths (e.g., precision weight scales); less optimal for low-frequency sensor signals where 1/f noise dominates. | Select OPA2189IDR when long-term DC stability outweighs low-frequency noise; choose LTC6241HS8#TRPBF for photodiode or bio-signal apps demanding lowest 0.1–10Hz noise. |
| AD8628ARZ-REEL7 | Zero-drift; 1.5μV max VOS, 0.002μV/°C drift; 1.5pA max IB; 1.2MHz GBW limits bandwidth-critical designs. | Suitable for micropower (<1mA) precision buffers; insufficient GBW for active filters above ~100kHz or fast-settling data acquisition. | Choose AD8628ARZ-REEL7 for ultra-low-power, ultra-low-drift DC buffers; LTC6241HS8#TRPBF remains preferred for dual-channel, wideband, low-noise signal chains. |
Compared with OPA2189IDR and AD8628ARZ-REEL7, the LTC6241HS8#TRPBF uniquely balances ultra-low 1/f noise, 18MHz bandwidth, dual-channel integration, and guaranteed 1pA IB over extended temperature - making it optimal for high-fidelity analog front-ends in portable medical and optical sensing where both noise and bandwidth matter.
Availability
LTC6241HS8#TRPBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical instrumentation, and high-impedance transducer interfaces requiring stable component supply across automotive, industrial, and portable electronics programs.
Supply support for LTC6241HS8#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 legacy Linear Technology precision op amp portfolio, engineered specifically for low-noise, low-input-bias, rail-to-rail output applications in high-impedance, wide-temperature, and battery-constrained systems.
FAQ
What is the maximum guaranteed input offset voltage for LTC6241HS8#TRPBF over its full operating temperature range?
The LTC6241HS8#TRPBF guarantees a maximum input offset voltage of 125μV over its full –40°C to 125°C operating temperature range, as specified in the H-grade electrical characteristics table under VOS parameter with "l" notation indicating full-range testing.
Does LTC6241HS8#TRPBF support true rail-to-rail output swing, and what is the worst-case saturation voltage?
Yes, the LTC6241HS8#TRPBF provides rail-to-rail output swing, with worst-case saturation voltages of 30mV above V– and 30mV below V+ at 1mA load and –40°C to 125°C, ensuring >2.94Vpp output from a 3V supply in precision applications.
What is the input bias current specification for LTC6241HS8#TRPBF, and is it guaranteed over temperature?
The LTC6241HS8#TRPBF guarantees ≤1pA maximum input bias current over its full –40°C to 125°C operating range, confirmed in the H-grade electrical characteristics table under IB parameter with "l" notation - critical for high-impedance sensor interfacing.
Can LTC6241HS8#TRPBF operate from a single 3V supply, and what is its minimum supply requirement?
Yes, the LTC6241HS8#TRPBF operates from a single 3V supply and is fully specified down to 2.8V minimum supply voltage, with all key parameters including GBW, VOS, and IB guaranteed across that range per the Absolute Maximum Ratings and Electrical Characteristics tables.
Is LTC6241HS8#TRPBF unity-gain stable, and does it require external compensation for standard configurations?
Yes, the LTC6241HS8#TRPBF is unity-gain stable and requires no external compensation for standard inverting, non-inverting, or buffer configurations; it maintains phase margin >60° at unity gain with ≤5pF capacitive load, as verified in the Gain Bandwidth and Phase Margin vs Temperature plot.
LTC6241HS8#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:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC6241HS8#TRPBF FAQ
1.How can I place an order for LTC6241HS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6241HS8#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 LTC6241HS8#TRPBF reliable?
The price and inventory of LTC6241HS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6241HS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6241HS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6241HS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6241HS8#TRPBF?
LTC6241HS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6241HS8#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 LTC6241HS8#TRPBF?
For technical support, including LTC6241HS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6241HS8#TRPBF requirements.
6.How does Aetrix verify that LTC6241HS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6241HS8#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 LTC6241HS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6241HS8#TRPBF?
All LTC6241HS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6241HS8#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 LTC6241HS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6241HS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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