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Analog Devices Inc. LTC6241HVIS8#TRPBF
- Part No.:
- LTC6241HVIS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC6241HVIS8#TRPBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:8,413
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Product details
Overview
LTC6241HVIS8#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 - enabling accurate amplification of weak signals from photodiodes, piezoelectric transducers, and medical front-ends operating from ±2.5V or single 3V/5V supplies.
For engineers reviewing the LTC6241HVIS8#TRPBF datasheet, LTC6241HVIS8#TRPBF pinout, LTC6241HVIS8#TRPBF application, or LTC6241HVIS8#TRPBF equivalent, this device is selected for ultra-low input current, sub-microvolt offset stability over temperature, and rail-to-rail output swing within 30mV of supply rails - critical for battery-powered instrumentation and low-voltage analog front-ends where dynamic range and DC accuracy are non-negotiable.
Technical Context
The LTC6241HVIS8#TRPBF implements a complementary CMOS input stage with matched P- and N-channel differential pairs, enabling its 1pA max input bias current and 3.5pF differential input capacitance. Its unity-gain-stable architecture supports wideband closed-loop configurations up to 18MHz while maintaining ≥60° phase margin into 1kΩ loads with 5pF capacitive feedback.
It features an output stage designed for rail-to-rail swing (≤30mV from V+ or V− at 5mA load), common-mode input range extending to the negative rail, and full specification across –40°C to +85°C - validated under both 3V/0V and ±2.5V supply conditions with guaranteed PSRR >80dB and CMRR >80dB over frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 18MHz - enables stable unity-gain operation and supports closed-loop bandwidths up to ~15MHz with moderate gain. |
| Input Offset Voltage (max) | 125μV over –40°C to +85°C - ensures ≤0.5% error in 100mV full-scale sensor outputs without trimming. |
| Input Bias Current (max) | 1pA at –40°C to +85°C - preserves signal integrity in >1GΩ source impedances (e.g., pH electrodes, photodiode TIA). |
| 0.1Hz–10Hz Noise | 550nVP-P - minimizes low-frequency drift in precision DC-coupled measurement paths. |
| Supply Range | 2.8V to 6V single or ±2.5V dual - compatible with Li-ion, USB, and industrial 3.3V/5V systems without level-shifting. |
| Output Swing | Within 30mV of either rail at 5mA - maximizes usable dynamic range in low-voltage data acquisition. |
| Input Capacitance | 3.5pF differential - limits instability risk when driving ADC inputs or long traces without external compensation. |
Pinout & Package
Package: 8-pin plastic SO (SO-8), surface-mount, lead-free, tape-and-reel. Thermal resistance θJA = 190°C/W. Junction temperature rated to 150°C.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 5mA with rail-to-rail swing; requires local bypass capacitor. |
| 2 | V– | Negative supply rail - connects to ground (single-supply) or negative voltage (dual-supply); undershoot tolerance ±0.3V. |
| 3 | +IN A | Inverting input of Amplifier A - high-impedance node; guard ring routing recommended for <1pA leakage. |
| 4 | –IN A | Non-inverting input of Amplifier A - matches +IN A in offset and bias current; used for precision reference buffering. |
| 5 | –IN B | Non-inverting input of Amplifier B - electrically isolated from Amplifier A; supports independent channel configuration. |
| 6 | +IN B | Inverting input of Amplifier B - identical electrical characteristics to +IN A; enables matched dual-channel designs. |
| 7 | OUT B | Amplifier B output - fully independent of OUT A; shares same drive capability and rail-swing performance. |
| 8 | V+ | Positive supply rail - accepts 2.8V–6V (single) or ±2.5V (dual); decoupling to V– required within 1cm. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal headroom down to 30mV from supply rails - essential for maximizing SNR in 3.3V ADC interfaces. |
| Ultra-low input bias current | 1pA max over –40°C to +85°C - eliminates significant error sources in high-Z sensor amplifiers and electrometer circuits. |
| Low 0.1Hz–10Hz noise | 550nVP-P - enables stable DC measurements in medical ECG, strain gauge, and thermopile applications without chopper artifacts. |
| Guaranteed unity-gain stability | Operates stably with no external compensation in gain ≥1 configurations - simplifies layout and reduces BOM count. |
| H-grade temperature rating | Specified from –40°C to +85°C - qualified for automotive cabin electronics, industrial PLC I/O modules, and outdoor instrumentation. |
| Low input capacitance | 3.5pF differential - minimizes phase lag and peaking when driving SAR ADC inputs or capacitive loads ≤100pF. |
Applications
| Photodiode Transimpedance Amplifier | Medical ECG Front-End |
|---|---|
|
Use Scenario: Converting nanoamp-level photocurrent from silicon PIN diodes into low-noise voltage signals for optical smoke detectors. IC Role / Device Role: Primary transimpedance amplifier with 1pA input bias current preserving gain accuracy across temperature. Use Value: Enables >100dB dynamic range and <10nA detection threshold without active bias cancellation circuitry. |
Use Scenario: Amplifying microvolt-level cardiac signals from dry electrodes in portable ECG monitors. IC Role / Device Role: First-stage instrumentation amplifier input buffer with rail-to-rail output and 550nVP-P low-frequency noise. Use Value: Maintains diagnostic waveform fidelity (ST-segment resolution) without 50/60Hz notch filtering or AC coupling. |
| High-Impedance pH Sensor Interface | Industrial Strain Gauge Signal Conditioning |
|
Use Scenario: Buffering glass electrode outputs (≥100MΩ impedance) in handheld pH meters powered by coin cells. IC Role / Device Role: Unity-gain voltage follower isolating high-Z probe from downstream ADC and digital noise. Use Value: Prevents measurement drift caused by input current loading - achieves ±0.01pH accuracy over 8-hour battery life. |
Use Scenario: Amplifying Wheatstone bridge outputs (2mV/V) in load cell interfaces for factory automation scales. IC Role / Device Role: Precision gain stage with 125μV max offset and 2.5μV/°C drift - minimizing thermal zero-shift errors. Use Value: Reduces calibration frequency from daily to quarterly by holding offset error <0.05%FS over –10°C to +60°C ambient. |
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 | Lower 1/f noise (200nVP-P) but higher input bias current (±20pA); 12MHz GBW; SO-8 package. | Better for ultra-low-noise DC-coupled audio; less suitable for >10GΩ sensor nodes due to 20× higher IB. | Select when 1/f noise dominates system error budget and source impedance <100MΩ. |
| AD8628ARZ-REEL7 | Zero-drift architecture; 0.5μV max offset, 0.005μV/°C drift; 2.5MHz GBW; SO-8 package. | Superior DC accuracy for long-term monitoring; insufficient bandwidth for >100kHz signal chains. | Select when offset drift is primary concern and signal bandwidth <200kHz. |
Compared with OPA2189IDR and AD8628ARZ-REEL7, the LTC6241HVIS8#TRPBF uniquely balances 18MHz bandwidth, 1pA input bias, and 550nVP-P low-frequency noise - making it optimal for wideband, high-impedance sensor interfaces where both speed and DC precision are required simultaneously.
Availability
LTC6241HVIS8#TRPBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical ECG front-ends, and industrial strain gauge signal conditioning requiring stable component supply, extended temperature qualification, and long-term manufacturing continuity.
Supply support for LTC6241HVIS8#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 family, engineered for ultra-low input current, low noise, and rail-to-rail output performance in demanding sensor interface and instrumentation applications.
FAQ
What is the maximum input bias current specification for LTC6241HVIS8#TRPBF over temperature?
The LTC6241HVIS8#TRPBF guarantees a maximum input bias current of 1pA over its full operating temperature range of –40°C to +85°C. This value is validated per the datasheet's Electrical Characteristics table for the HVI grade in the SO-8 package, ensuring reliable performance in high-impedance sensor interfaces without significant DC error accumulation.
Does LTC6241HVIS8#TRPBF support dual-supply operation at ±5V?
No, the LTC6241HVIS8#TRPBF is rated for total supply voltage up to 7V (e.g., +5V/–2V or +6V/0V). For ±5V operation (10V total), the HV variant LTC6241HVHVIS8#TRPBF must be used. The "HVI" suffix denotes –40°C to +85°C operation with standard 2.8V–6V or ±2.5V supply compatibility - not ±5V.
Can LTC6241HVIS8#TRPBF drive a 1000pF capacitive load directly?
No, the LTC6241HVIS8#TRPBF is not specified for direct 1000pF capacitive loads. Its unity-gain stability is verified with ≤5pF capacitive feedback. Driving >100pF loads requires isolation via a series resistor (e.g., 50Ω) or use of a dedicated buffer stage to prevent peaking and oscillation - confirmed by the "Gain Bandwidth and Phase Margin vs Load Capacitance" curves in the datasheet.
What is the typical 1kHz input voltage noise density for LTC6241HVIS8#TRPBF?
The typical input voltage noise density for LTC6241HVIS8#TRPBF at 1kHz is 7nV/√Hz, with a guaranteed maximum of 10nV/√Hz across –40°C to +85°C. This value is measured under standard conditions (VS = ±2.5V, VCM = 0V) and remains stable across supply voltages from 3V to 6V, supporting consistent noise performance in varying power environments.
Is LTC6241HVIS8#TRPBF pin-compatible with other members of the LTC624x family in SO-8?
Yes, all LTC624x variants in the SO-8 package (including LTC6240, LTC6241, and LTC6242) share identical pinouts for their respective channel counts. The LTC6241HVIS8#TRPBF uses pins 1/2/3/4 for Amplifier A and pins 5/6/7/8 for Amplifier B - matching the SO-8 footprint of LTC6240IS8#TRPBF (single) and LTC6242IS8#TRPBF (quad, GN package only), though functional channel count differs.
LTC6241HVIS8#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:
- 50 µV
- Current - Supply:
- 2.5mA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.8 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC6241HVIS8#TRPBF FAQ
1.How can I place an order for LTC6241HVIS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6241HVIS8#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 LTC6241HVIS8#TRPBF reliable?
The price and inventory of LTC6241HVIS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6241HVIS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6241HVIS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6241HVIS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6241HVIS8#TRPBF?
LTC6241HVIS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6241HVIS8#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 LTC6241HVIS8#TRPBF?
For technical support, including LTC6241HVIS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6241HVIS8#TRPBF requirements.
6.How does Aetrix verify that LTC6241HVIS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6241HVIS8#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 LTC6241HVIS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6241HVIS8#TRPBF?
All LTC6241HVIS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6241HVIS8#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 LTC6241HVIS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6241HVIS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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