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Analog Devices Inc. LTC6241HVHS8#PBF
- Part No.:
- LTC6241HVHS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC6241HVHS8#PBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:197
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Product details
Overview
LTC6241HVHS8#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise CMOS operational amplifier optimized for high-precision, low-input-bias-current signal conditioning in ±5V industrial and medical systems. 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 high-impedance sensor outputs such as photodiode or piezoelectric transducers.
For engineers reviewing the LTC6241HVHS8#PBF datasheet, LTC6241HVHS8#PBF pinout, LTC6241HVHS8#PBF application, or LTC6241HVHS8#PBF equivalent, this device is selected when ultra-low input current, wide supply range (±5V), H-grade temperature operation (–40°C to 125°C), and SO-8 package compatibility are required for precision analog front-ends in portable instrumentation and harsh-environment control systems.
Technical Context
The LTC6241HVHS8#PBF implements a unity-gain-stable CMOS input stage with guaranteed ≤1pA input bias current across –40°C to 125°C, enabling direct interfacing with megaohm-level source impedances without significant DC error. Its rail-to-rail output swings within 30mV of both rails under 5mA load, maximizing dynamic range in low-voltage ±5V applications.
It features a fully specified HV variant architecture supporting total supply voltages up to 12V (±5.5V), with common-mode input range extending to the negative rail and guaranteed CMRR ≥80dB over –5V to +3.5V VCM. The 18MHz GBW and 10V/μs slew rate support fast settling in active filter and driver stages without phase-margin degradation.
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, suitable for anti-aliasing and reconstruction filters. |
| Input Bias Current | 1pA max (–40°C to 125°C) - enables <1mV error with 1GΩ source impedance, critical for photodiode and pH electrode interfaces. |
| 0.1Hz–10Hz Noise | 550nVP-P - ensures sub-microvolt baseline stability in DC-coupled medical amplifiers and weigh-scale signal chains. |
| Input Offset Voltage | 125μV max (–40°C to 125°C) - limits initial gain error to <0.0125% in 100× instrumentation amplifier configurations. |
| Supply Range | ±2.5V to ±5.5V (12V total) - allows direct operation from split supplies in legacy industrial control and test equipment. |
| Output Swing | Within 30mV of rails at 5mA - preserves >98% of full-scale dynamic range in 10-bit+ SAR ADC driver applications. |
| Channel Matching | VOS match ≤160μV (–40°C to 85°C) - supports precise differential signal conditioning with <0.016% gain mismatch in dual-amplifier topologies. |
Pinout & Package
Package: 8-lead plastic SO (S8), RoHS-compliant, lead-free finish, JEDEC MS-012AC compliant. Thermal resistance θJA = 190°C/W. Underside pad not connected; no thermal pad requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Rail-to-rail output capable of sourcing/sinking 10mA; connects directly to ADC input or next-stage buffer. |
| 2 - V– | Negative supply rail | Reference for internal biasing; must be decoupled with 0.1μF ceramic capacitor near pin. |
| 3 - +IN A | Inverting input of Amp A | High-impedance CMOS node; requires guard ring layout to minimize leakage-induced offset drift. |
| 4 - –IN A | Non-inverting input of Amp A | Same high-Z characteristics as +IN A; matched input capacitance (3.5pF diff, 3pF cm) enables balanced feedback networks. |
| 5 - –IN B | Non-inverting input of Amp B | Electrically isolated from Amp A inputs; enables independent dual-channel signal paths with minimal crosstalk (<–100dB @ 1kHz). |
| 6 - +IN B | Inverting input of Amp B | Identical electrical specs to Pin 3; supports matched dual-opamp configurations like instrumentation amps or differential receivers. |
| 7 - V+ | Positive supply rail | Accepts up to +5.5V; PSRR ≥85dB ensures immunity to digital supply noise in mixed-signal PCBs. |
| 8 - OUT B | Amplifier B output | Functionally identical to Pin 1; supports simultaneous dual-channel acquisition without inter-channel delay. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 1pA max over –40°C to 125°C - eliminates need for external bias compensation resistors in high-Z sensor interfaces. |
| Rail-to-rail output swing | 30mV from rails at 5mA load - maximizes usable signal range in ±5V systems driving 12-bit+ ADCs. |
| H-grade temperature rating | –40°C to 125°C operation - qualified for under-hood automotive sensors and industrial motor drive feedback loops. |
| Low 1/f noise | 550nVP-P (0.1Hz–10Hz) - enables stable DC-coupled amplification in ECG, EEG, and strain-gauge bridges. |
| High CMRR | ≥83dB over –5V to +3.5V common-mode range - rejects power-supply ripple and ground bounce in noisy environments. |
| Unity-gain stable | No external compensation required - simplifies layout and reduces BOM count in gain-of-1 buffers and active filters. |
Applications
| Photodiode Amplifier | Medical Instrumentation |
|---|---|
|
Use Scenario: Transimpedance amplification of low-light photodiode current (pA–nA range) in pulse oximeters and spectrophotometers. IC Role / Device Role / Timing Role: Dual op-amp configured as TIA (A) and reference buffer (B), providing stable gain and low-noise biasing. Use Value: 1pA input bias current prevents signal loss; 550nVP-P noise ensures detection of weak optical signals without averaging. |
Use Scenario: Front-end amplification of biopotential signals (ECG, EMG) with DC-coupled, high-common-mode-rejection requirements. IC Role / Device Role / Timing Role: Dual amplifier implementing differential input stage and right-leg drive buffer in 3-lead ECG analog front-end. Use Value: 125μV max VOS and 2.5μV/°C drift minimize baseline wander; rail-to-rail output drives ADC without level-shifting. |
| Industrial Sensor Interface | High-Voltage Data Acquisition |
|
Use Scenario: Signal conditioning for high-impedance RTD, thermocouple, or piezoelectric pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision dual op-amp used for sensor excitation (B) and low-noise amplification (A) in ratiometric measurement circuits. Use Value: ±5.5V supply support enables direct integration with industrial ±5V analog I/O standards; 18MHz GBW allows fast step response in closed-loop control. |
Use Scenario: Input buffer and gain stage in isolated ±10V data acquisition systems requiring wide dynamic range and low distortion. IC Role / Device Role / Timing Role: Dual op-amp configured as programmable-gain amplifier (PGA) front-end with matched channel performance. Use Value: Channel-to-channel VOS match ≤160μV ensures <0.016% gain error in differential PGA topologies; 10V/μs slew rate supports 1MSPS sampling. |
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 |
|---|---|---|---|
| ADA4625-2ARZ | Lower 1/f noise (220nVP-P), higher supply current (3.4mA), same SO-8 package, but only rated to 105°C. | Better for ultra-low-noise DC applications where temperature range ≤105°C is acceptable; less suitable for under-hood or high-temp industrial use. | Select ADA4625-2ARZ when 1/f noise dominates system error budget and H-grade operation is not required. |
| OPA2189IDR | Zero-drift architecture (0.005μV/°C drift), higher input bias current (±20pA), 12V supply max, SO-8 package. | Superior long-term DC stability for precision weighing and calibration equipment; trades off input current for drift performance. | Select OPA2189IDR when offset drift over temperature and time is more critical than input bias current in sensor front-ends. |
Compared with ADA4625-2ARZ and OPA2189IDR, the LTC6241HVHS8#PBF uniquely balances ultra-low input bias current (1pA), H-grade temperature range (–40°C to 125°C), and ±5.5V supply capability - making it optimal for high-impedance sensor interfaces in extended-temperature industrial and medical platforms where zero-drift isn't mandatory but leakage-induced error must be minimized.
Availability
LTC6241HVHS8#PBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical instrumentation front-ends, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6241HVHS8#PBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6241HVHS8#PBF belongs to the LTC6240/LTC6241/LTC6242 family of ultra-low-input-bias-current, low-noise op amps designed specifically for precision signal conditioning of high-impedance sources in demanding environments including medical diagnostics and industrial process control.
FAQ
What is the maximum supply voltage for the LTC6241HVHS8#PBF?
The LTC6241HVHS8#PBF supports a total supply voltage of up to 12V, corresponding to ±5.5V operation. This HV variant is explicitly rated for split-supply use up to ±5V (10V total) with margin, unlike the standard LTC6241HS8#PBF limited to 6V total (3V to 6V single supply). Absolute maximum rating is 12V between V+ and V– pins.
Does the LTC6241HVHS8#PBF have rail-to-rail input capability?
No, the LTC6241HVHS8#PBF features rail-to-rail *output* but not rail-to-rail *input*. Its input common-mode voltage range extends to the negative rail (V–) but only up to (V+ – 1.5V) under ±5V supply conditions. For example, with ±5V supplies, VCM is specified from –5V to +3.5V - sufficient for most sensor interfaces but not full rail coverage on the positive side.
Is the LTC6241HVHS8#PBF pin-compatible with the standard LTC6241HS8#PBF?
Yes, the LTC6241HVHS8#PBF is pin-compatible with the LTC6241HS8#PBF and all other SO-8 variants in the LTC6241 family. Both share identical 8-lead SO package dimensions, pin numbering, and pin functions. The HV suffix denotes enhanced supply voltage rating and guaranteed performance at ±5V, not mechanical or electrical pinout changes.
What is the typical input bias current of the LTC6241HVHS8#PBF at 125°C?
The LTC6241HVHS8#PBF guarantees input bias current ≤1pA over its full operating temperature range of –40°C to 125°C. Typical performance at 125°C is 0.5pA, as confirmed in the HVH-grade electrical characteristics table (page 12 of datasheet 624012fe), where IB is specified as 0.5pA (typ) / 1pA (max) at –40°C to 125°C under ±5V supply.
Can the LTC6241HVHS8#PBF drive a 1000pF capacitive load stably?
The LTC6241HVHS8#PBF is unity-gain stable but not optimized for heavy capacitive loads. Driving 1000pF directly may cause peaking or ringing due to phase-margin reduction. For such loads, a series resistor (e.g., 10–50Ω) between the output and capacitor is recommended, or use of the device in a gain ≥2 configuration to improve stability - per Figure 15 (Gain Bandwidth vs Supply Voltage) and stability guidelines in the datasheet.
LTC6241HVHS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC6241HVHS8#PBF FAQ
1.How can I place an order for LTC6241HVHS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6241HVHS8#PBF 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 LTC6241HVHS8#PBF reliable?
The price and inventory of LTC6241HVHS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6241HVHS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6241HVHS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6241HVHS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6241HVHS8#PBF?
LTC6241HVHS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6241HVHS8#PBF 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 LTC6241HVHS8#PBF?
For technical support, including LTC6241HVHS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6241HVHS8#PBF requirements.
6.How does Aetrix verify that LTC6241HVHS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6241HVHS8#PBF 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 LTC6241HVHS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6241HVHS8#PBF?
All LTC6241HVHS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6241HVHS8#PBF, 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 LTC6241HVHS8#PBF part is unused and in its original packaging.
Return procedure for LTC6241HVHS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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