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Analog Devices Inc. LTC6242CGN#PBF
- Part No.:
- LTC6242CGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC6242CGN#PBF.pdf
- Description:
- IC CMOS 4 CIRCUIT 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:445
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Product details
Overview
LTC6242CGN#PBF from Analog Devices (formerly Linear Technology) is a quad, rail-to-rail output, low-noise CMOS operational amplifier optimized for precision signal conditioning in space-constrained industrial and medical systems. It delivers 18MHz gain bandwidth, 10V/μs slew rate, 550nVP-P 0.1Hz–10Hz noise, 150μV max input offset voltage (0°C to 70°C), and operates from 2.8V to 6V single supply - enabling high-fidelity amplification of weak sensor signals in portable instrumentation.
For engineers reviewing the LTC6242CGN#PBF datasheet, LTC6242CGN#PBF pinout, LTC6242CGN#PBF application, or LTC6242CGN#PBF equivalent, key selection criteria include its guaranteed 1pA max input bias current, quad-channel SSOP-16 footprint, rail-to-rail output swing within 30mV of rails, and H-grade temperature stability up to 125°C - critical for low-drift transducer interfaces and battery-powered analog front-ends.
Technical Context
The LTC6242CGN#PBF implements a unity-gain-stable CMOS input stage with 1012Ω input resistance and 3.5pF differential input capacitance, enabling high-impedance source interfacing without significant loading. Its output stage uses complementary MOSFETs to achieve rail-to-rail swing while maintaining 10V/μs slew rate and 18MHz GBW across 2.8V–6V supplies.
It features matched channel performance (≤325μV VOS match, ≤95dB CMRR match) and low 2.5μV/°C max offset drift, supporting multi-channel synchronous acquisition. The device is fully specified at 0°C to 70°C (C-grade), with guaranteed operation over –40°C to 85°C per characterization data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Amplifier Count | Quad - enables compact multi-channel signal paths without inter-chip matching errors |
| Gain Bandwidth Product | 18MHz - supports stable closed-loop gain ≥10 at >1MHz, suitable for anti-aliasing and active filtering |
| Input Offset Voltage | 150μV max (0°C to 70°C) - ensures ≤0.003% error in 5V full-scale measurement systems |
| 0.1Hz–10Hz Noise | 550nVP-P - preserves resolution in DC-coupled sensor amplifiers (e.g., strain gauges, thermopiles) |
| Input Bias Current | 1pA max - prevents significant voltage drop across >100MΩ source impedances (e.g., pH electrodes, photodiodes) |
| Supply Range | 2.8V to 6V single supply - compatible with Li-ion, 3.3V, and 5V logic domains without level-shifting |
| Output Swing | Within 30mV of rails - maximizes dynamic range in low-voltage systems (e.g., 3.3V ADC drivers) |
| Channel Matching | ≤325μV VOS match - reduces common-mode error in differential signal processing and instrumentation amps |
Pinout & Package
The LTC6242CGN#PBF is housed in a 16-lead plastic SSOP (GN) package with exposed pad (not electrically connected), 0.65mm lead pitch, and JEDEC MS-013AC footprint. Thermal resistance θJA = 135°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load; rail-to-rail capable (30mV min. headroom) |
| 2 | –IN A | Inverting input of Amp A - high-impedance CMOS node (1012Ω, 3.5pF) |
| 3 | +IN A | Non-inverting input of Amp A - identical impedance to Pin 2; matched for common-mode rejection |
| 4 | V+ | Positive supply rail - accepts 2.8V to 6V; decoupling capacitor required at pin |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated but thermally coupled to other channels |
| 6 | –IN B | Inverting input of Amp B - matched to Pin 5 for inter-channel CMRR ≥76dB |
| 7 | OUT B | Amplifier B output - independent output stage; no crosstalk with Amp A/C/D under 100MHz |
| 8 | NC | No connect - internal die pad; must remain floating or grounded per layout guidelines |
| 9 | OUT D | Amplifier D output - fourth channel; identical AC/DC specs to Pins 1 and 7 |
| 10 | –IN D | Inverting input of Amp D - part of matched pair with Pin 11 (+IN D) |
| 11 | +IN D | Non-inverting input of Amp D - matched to Pin 10 for VOS tracking ≤400μV over temperature |
| 12 | V– | Negative supply rail - tied to ground in single-supply operation; 0V reference for all inputs/outputs |
| 13 | +IN C | Non-inverting input of Amp C - third channel input; shares same process corner as other inputs |
| 14 | –IN C | Inverting input of Amp C - matched to Pin 13; supports common-mode input up to 3.5V (V+ – 1.5V) |
| 15 | OUT C | Amplifier C output - fully buffered; capable of sourcing/sinking 5mA continuously |
| 16 | NC | No connect - internal test pad; no external connection required |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 5.94Vpp output on 6V supply - eliminates need for dual supplies in precision ADC driver stages |
| Ultra-low input bias current | 1pA max guarantees <1μV error across 1GΩ feedback resistors - essential for TIA stability in photodiode amps |
| Low 0.1Hz–10Hz noise | 550nVP-P enables sub-16-bit resolution in DC-coupled medical ECG/EEG front-ends without chopper artifacts |
| Quad-channel integration | Four matched amplifiers in one SSOP-16 reduce PCB area by 60% vs discrete SO-8 op-amps - critical for portable diagnostics |
| Guaranteed 18MHz GBW | Ensures phase margin >60° with 5pF capacitive loads - simplifies layout for sensor interface PCBs with long traces |
| Wide supply range | 2.8V–6V operation supports direct connection to LiPo batteries (3.0–4.2V) and 3.3V/5V system rails without regulators |
Applications
| Photodiode Amplifier | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying nanoamp-level photocurrent from silicon PIN diodes in pulse oximeters and lab spectrometers. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 1pA input bias current minimizing dark-current error and 550nVP-P noise preserving SNR. Use Value: Enables detection of <10nA signals with >80dB dynamic range using standard 10MΩ feedback resistors - no chopper stabilization needed. | Use Scenario: Front-end amplification of biopotential signals (ECG, EEG) in portable patient monitors. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier input stage with rail-to-rail output driving 16-bit SAR ADCs. Use Value: Achieves <2μV RMS input-referred noise over 0.05–150Hz band and 150μV offset - meets IEC 60601-2-27 clinical accuracy requirements. |
| High-Impedance Transducer Interface | Low-Noise Signal Processing |
Use Scenario: Conditioning outputs from piezoresistive pressure sensors and MEMS accelerometers with >100MΩ source impedance. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-Z sensor elements from downstream filters and ADCs. Use Value: Prevents >10mV error due to input loading (vs. typical 10nA bias op-amps), ensuring ±0.1% full-scale accuracy in industrial pressure transmitters. | Use Scenario: Active filtering and gain stages in battery-powered data loggers acquiring environmental sensor data (temperature, humidity). IC Role / Device Role / Timing Role: Quad-channel signal conditioner implementing anti-aliasing LPF, PGA, and ADC driver in single IC. Use Value: Reduces component count by 4× vs discrete solutions while maintaining 18MHz GBW for 10kHz filter cutoffs - extends battery life via 2.2mA/channel quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4898-4ARUZ | Higher 3.9nV/√Hz noise (1kHz), 200MHz GBW, ±2.5V to ±5V only - no 3.3V single-supply support | Better for wideband video/communications; unsuitable for low-voltage portable medical devices | Select when >100MHz small-signal bandwidth is required and supply is dual-rail; avoid for 3.3V battery systems |
| OPA4188AIDR | Zero-drift architecture, 0.03μV/°C drift, but 800nVP-P 0.1–10Hz noise and 2MHz GBW - slower settling | Superior DC precision for weigh scales; inferior AC performance for fast sensor sampling | Choose for ultra-stable DC offsets in static measurements; reject for dynamic signal chains requiring >1MHz bandwidth |
Compared with ADA4898-4ARUZ and OPA4188AIDR, the LTC6242CGN#PBF uniquely balances 18MHz bandwidth, 550nVP-P low-frequency noise, and 2.8V–6V single-supply operation - making it optimal for portable, multi-channel, medium-bandwidth precision analog systems where power efficiency and DC accuracy are co-prioritized.
Availability
LTC6242CGN#PBF is available at Aetrix Electronics and suitable for photodiode amplification, portable medical instrumentation, and high-impedance transducer interfacing requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.
Supply support for LTC6242CGN#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6242CGN#PBF belongs to ADI's legacy Linear Technology precision op amp portfolio, engineered specifically for low-noise, low-input-bias, rail-to-rail signal conditioning in space- and power-constrained applications - particularly sensor front-ends and portable instrumentation.
FAQ
What is the maximum operating temperature range for the LTC6242CGN#PBF?
The LTC6242CGN#PBF is rated for 0°C to 70°C specified operation, with full characterization and guaranteed performance across this range. While not tested at extremes, it is designed and characterized to function reliably from –40°C to 85°C per Linear Technology documentation. For extended temperature applications up to 125°C, the LTC6242HGN#PBF (H-grade) variant is recommended.
Does the LTC6242CGN#PBF support single-supply operation below 3V?
Yes, the LTC6242CGN#PBF supports single-supply operation down to 2.8V minimum, with full specification at 3V and 5V. At 2.8V, it maintains rail-to-rail output swing (within 30mV of rails), 150μV max input offset, and 18MHz gain bandwidth - enabling compatibility with partially discharged Li-ion cells and low-power microcontroller systems.
How does the input bias current of the LTC6242CGN#PBF compare to other quad op amps?
The LTC6242CGN#PBF guarantees ≤1pA maximum input bias current at 25°C and across its 0°C to 70°C operating range - among the lowest for production quad op amps. This is 100× lower than typical JFET-input quads (e.g., TL074: ~100pA) and 1000× lower than bipolar quads (e.g., LM324: ~45nA), making it uniquely suited for photodiode and high-impedance sensor interfaces.
Can the LTC6242CGN#PBF drive capacitive loads without instability?
Yes, the LTC6242CGN#PBF is unity-gain stable and characterized to drive ≥5pF capacitive loads with >60° phase margin at 25°C. For loads >10pF, a series resistor (10–50Ω) between output and capacitance is recommended. Its 18MHz GBW and low 3.5pF input capacitance minimize peaking in sensor cable-driven configurations.
Is the LTC6242CGN#PBF pin-compatible with other packages in the LTC624x family?
No, the LTC6242CGN#PBF (SSOP-16) is not pin-compatible with the LTC6242CDHC#PBF (16-pin 5mm × 3mm DFN), despite identical electrical functionality. Pin assignments differ significantly - notably V– is Pin 12 in GN but Pin 4 in DHC, and NC pins occupy different locations. PCB layout must be redesigned when switching between these packages.
LTC6242CGN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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:
- 60 µV
- Current - Supply:
- 1.8mA (x4 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:
- 16-SSOP
LTC6242CGN#PBF FAQ
1.How can I place an order for LTC6242CGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6242CGN#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 LTC6242CGN#PBF reliable?
The price and inventory of LTC6242CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6242CGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC6242CGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6242CGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6242CGN#PBF?
LTC6242CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6242CGN#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 LTC6242CGN#PBF?
For technical support, including LTC6242CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6242CGN#PBF requirements.
6.How does Aetrix verify that LTC6242CGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6242CGN#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 LTC6242CGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC6242CGN#PBF?
All LTC6242CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6242CGN#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 LTC6242CGN#PBF part is unused and in its original packaging.
Return procedure for LTC6242CGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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