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Analog Devices Inc. LTC6241HVCDD#PBF
- Part No.:
- LTC6241HVCDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6241HVCDD#PBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:255
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Product details
Overview
LTC6241HVCDD#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise CMOS operational amplifier optimized for high-precision, low-supply applications. It delivers 18MHz gain bandwidth, 10V/μs slew rate, 550nVP-P 0.1Hz–10Hz noise, and guaranteed ≤1pA input bias current - enabling high-fidelity signal conditioning in photodiode amplifiers, medical instrumentation, and sensor front-ends operating from ±5V supplies.
For engineers reviewing the LTC6241HVCDD#PBF datasheet, LTC6241HVCDD#PBF pinout, LTC6241HVCDD#PBF application, or LTC6241HVCDD#PBF equivalent, key selection criteria include its HV-grade ±5V supply support, 8-lead 3mm × 3mm DFN package with V–-tied underside metal, H-grade temperature range (–40°C to 125°C), and verified dual-channel matching for differential signal paths.
Technical Context
The LTC6241HVCDD#PBF implements a unity-gain-stable CMOS input stage with ultra-low input bias current (≤1pA max) and low input capacitance (3.5pF differential), making it suitable for high-impedance transducer interfaces. Its output swings within 30mV of either rail under load, preserving dynamic range in low-voltage systems.
It supports dual independent amplifiers in a single compact DFN package, with channel-to-channel matching specified for offset voltage (≤700μV max), CMRR (≥76dB), and PSRR (≥74dB), enabling precision differential configurations without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 18MHz - enables stable closed-loop operation up to ~1.06MHz full-power bandwidth with 3VP-P output into 1kΩ. |
| Input Bias Current | ≤1pA max - preserves signal integrity in >1GΩ source impedance circuits like photodiode or piezoelectric sensor interfaces. |
| 0.1Hz–10Hz Noise | 550nVP-P - ensures minimal low-frequency drift in DC-coupled medical or analytical instrumentation. |
| Supply Voltage Range | ±5V (HV version) - supports bipolar signal conditioning without level-shifting in industrial analog I/O modules. |
| Operating Temperature | –40°C to 125°C (H-grade) - qualified for under-hood automotive, motor control feedback, and industrial PLC environments. |
| Output Swing | Within 30mV of rails at 1mA - maximizes usable signal swing in 3V or ±2.5V systems, reducing headroom loss. |
| Input Offset Voltage | ≤725μV max (DD package, –40°C to 85°C) - enables accurate DC amplification without nulling circuitry in precision sensor bridges. |
Pinout & Package
Package: 8-lead (3mm × 3mm) plastic DFN with underside thermal pad connected to V– (PCB connection optional). Pin 1 marked by dot; exposed metal on bottom tied to V– for improved thermal performance and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable; drives loads down to 1kΩ while maintaining linearity. |
| 2 | –IN A | Inverting input of Amp A - high-impedance CMOS node; requires guard ring layout for <1pA leakage. |
| 3 | +IN A | Non-inverting input of Amp A - matched to –IN A for common-mode rejection; referenced to V– in single-supply use. |
| 4 | V– | Negative supply rail - also connected to underside thermal pad; must be low-impedance for stability and noise control. |
| 5 | V+ | Positive supply rail - accepts 2.8V to 11V total supply (e.g., +5V/–5V or +10V/0V). |
| 6 | OUT B | Amplifier B output - electrically isolated from OUT A; enables dual-path signal processing in same footprint. |
| 7 | –IN B | Inverting input of Amp B - matched to –IN A for inter-channel tracking in differential receivers. |
| 8 | +IN B | Non-inverting input of Amp B - symmetrical layout with +IN A minimizes thermal gradient-induced offset drift. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range in 3V or ±2.5V systems - eliminates need for level-shifting or supply boosting in portable instrumentation. |
| Ultra-low input bias current | ≤1pA max guarantees <1μV error from 1GΩ source impedance - critical for charge-amplifier and pH probe applications. |
| Low 0.1Hz–10Hz noise | 550nVP-P enables sub-μV DC measurement resolution in ECG, strain gauge, and thermopile amplifiers. |
| HV supply compatibility | Rated for ±5V operation - supports true bipolar signal acquisition in data acquisition systems without external regulators. |
| Channel-to-channel matching | Offset match ≤700μV and CMRR match ≥76dB allow direct differential output generation without calibration. |
Applications
| Photodiode Amplifier | Medical ECG Front-End |
|---|---|
Use Scenario: Transimpedance amplification of weak photocurrents from silicon PIN diodes in pulse oximetry sensors. IC Role / Device Role / Timing Role: Dual op-amp configured as low-noise TIA (A) and active filter/buffer (B) in single-chip solution. Use Value: 1pA input bias prevents dark-current error; 550nVP-P noise preserves SNR for <100nA signals; ±5V support enables bipolar baseline referencing. | Use Scenario: High-common-mode-rejection amplification of microvolt-level cardiac signals in portable ECG monitors. IC Role / Device Role / Timing Role: Dual amplifier implementing instrumentation amp topology (A+B) with matched gain and offset. Use Value: ≤700μV channel offset match reduces common-mode conversion; 125°C rating ensures reliability in battery-powered wearable enclosures. |
| Industrial Sensor Signal Chain | High-Impedance Transducer Interface |
Use Scenario: Conditioning outputs from RTD, thermistor, or bridge-based pressure sensors in factory automation nodes. IC Role / Device Role / Timing Role: First-stage gain and filtering element in 4–20mA transmitter or ADC driver stage. Use Value: 18MHz GBW supports fast step response for valve position feedback; ±5V operation accommodates industrial 24V loop-powered designs. | Use Scenario: Amplifying high-impedance outputs from piezoelectric accelerometers or MEMS microphones. IC Role / Device Role / Timing Role: Charge amplifier (A) and AC-coupled buffer (B) sharing same low-leakage substrate. Use Value: 3.5pF input capacitance minimizes resonance with sensor capacitance; 125°C rating sustains performance in engine-control proximity sensing. |
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 1GHz GBW, 2.5nV/√Hz noise, ±12V supply capable; larger SO-8 package; no H-grade option. | Better for wideband RF/IF buffering; unsuitable for ultra-low-bias <1pA applications due to 200pA IB. | Select when bandwidth >100MHz required and input impedance <10MΩ; avoid for photodiode or pH probe use. |
| OPA2189IDR | Zero-drift architecture; 0.1μV/°C drift, 5.2nV/√Hz noise; 1.8–36V supply; SO-8 only; 10pA IB. | Superior DC accuracy over temperature; higher noise limits use in low-level AC-coupled sensing. | Prefer for precision weight scales or digital multimeters; not recommended where 1pA bias is mandatory. |
Compared with ADA4898-2ARMZ and OPA2189IDR, the LTC6241HVCDD#PBF uniquely balances ultra-low input bias current (<1pA), low 0.1Hz–10Hz noise (550nVP-P), ±5V HV operation, and H-grade temperature range in a space-constrained DFN - making it irreplaceable in high-impedance, low-drift, industrial-grade analog front-ends.
Availability
LTC6241HVCDD#PBF is available at Aetrix Electronics and suitable for photodiode amplifiers, medical ECG front-ends, and industrial sensor signal chains requiring stable component supply across extended temperature and supply voltage ranges.
Supply support for LTC6241HVCDD#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. (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, designed specifically for low-noise, low-input-bias, rail-to-rail output applications in harsh-environment instrumentation and sensor interface systems.
FAQ
What is the maximum supply voltage for LTC6241HVCDD#PBF?
The LTC6241HVCDD#PBF supports a total supply voltage of up to 12V, enabling operation from ±5V rails (10V total) or single 12V supplies. Absolute maximum ratings specify V+ to V– ≤12V, with guaranteed performance across 2.8V to ±5.5V per the HV variant specification.
Does LTC6241HVCDD#PBF have rail-to-rail input capability?
No, the LTC6241HVCDD#PBF features rail-to-rail *output* but not rail-to-rail input. Its input common-mode range extends to the negative rail (V–) but only to (V+ – 1.2V) at room temperature - confirmed in the Electrical Characteristics table under VCM specification for ±5V operation.
What is the guaranteed input bias current for LTC6241HVCDD#PBF over temperature?
The LTC6241HVCDD#PBF guarantees input bias current ≤1pA maximum over the full –40°C to 125°C operating range (H-grade), as specified in the "LTC6240H/LTC6240HVH, LTC6241H/LTC6241HVH…" section of the datasheet. Typical value is 0.2pA at 25°C.
Can LTC6241HVCDD#PBF drive capacitive loads directly?
The LTC6241HVCDD#PBF is unity-gain stable but exhibits reduced phase margin with >5pF capacitive loads. The datasheet recommends using a series resistor (≥100Ω) between output and capacitive load to maintain stability - especially critical in photodiode TIA configurations where stray capacitance exceeds 2pF.
Is the underside thermal pad of LTC6241HVCDD#PBF required to connect to V–?
The underside metal pad of the LTC6241HVCDD#PBF is internally connected to V–, and the datasheet states PCB connection is *optional*. However, connecting it to a low-impedance V– plane improves thermal dissipation (θJA = 43°C/W vs. >100°C/W unconnected) and reduces noise coupling - strongly recommended for continuous 2.2mA/channel operation at 125°C.
LTC6241HVCDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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:
- 100 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
LTC6241HVCDD#PBF FAQ
1.How can I place an order for LTC6241HVCDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6241HVCDD#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 LTC6241HVCDD#PBF reliable?
The price and inventory of LTC6241HVCDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6241HVCDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC6241HVCDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6241HVCDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6241HVCDD#PBF?
LTC6241HVCDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6241HVCDD#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 LTC6241HVCDD#PBF?
For technical support, including LTC6241HVCDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6241HVCDD#PBF requirements.
6.How does Aetrix verify that LTC6241HVCDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6241HVCDD#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 LTC6241HVCDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC6241HVCDD#PBF?
All LTC6241HVCDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6241HVCDD#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 LTC6241HVCDD#PBF part is unused and in its original packaging.
Return procedure for LTC6241HVCDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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