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HomeProductsIntegrated Circuits (ICs)Specialized ICsLTC1442CN8
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LTC1442CN8 - Linear Technology / Analog Devices

Manufacturer Part Number
LTC1442CN8
Manufacturer
Linear Technology
Allelco Part Number
32D-LTC1442CN8
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
11,900 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 11900

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Specifications

LTC1442CN8 Tech Specifications
Linear Technology / Analog Devices - LTC1442CN8 technical specifications, attributes, parameters and parts with similar specifications to Linear Technology / Analog Devices - LTC1442CN8

Product Attribute Attribute Value
Part Number LTC1442CN8
Package DAC91001
Description DAC91001
Stock Condition Get 11900 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Linear Technology
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the LTC1442CN8 handle input offset voltage in precision analog applications, and what are typical performance implications for signal conditioning circuits?
The LTC1442CN8 exhibits an input offset voltage of 0.5 mV maximum, which is critical when amplifying low-level signals such as from strain gauges or thermocouples. In a non-inverting amplifier configuration with a gain of 10, this translates to a potential output error of up to 5 mV, which may saturate a 3.3 V ADC if not compensated. This level of offset necessitates careful layout and calibration in high-precision systems, especially where temperature stability is required over time.
What supply voltage range does the LTC1442CN8 support, and how does operation near rail-to-rail affect output swing in real-world designs?
The LTC1442CN8 operates from single supplies between 2.7 V and 11 V, making it suitable for both battery-powered and industrial systems. With a 5 V supply, the output can swing within approximately 50 mV of each rail under light load conditions, enabling efficient use of headroom in compact power supplies. However, driving capacitive loads above 100 pF without compensation can degrade phase margin and cause instability.
How should the LTC1442CN8 be used in comparator mode, and what timing characteristics influence response to fast transients?
When configured as a comparator, the LTC1442CN8 offers a propagation delay of 1.2 µs and a typical rise/fall time of 0.5 µs. These delays limit its suitability for detecting sub-microsecond edge transitions unless signal margins are sufficient. For applications requiring faster response, external hysteresis must be added to prevent chatter due to noise, and PCB parasitics must be minimized through short traces and ground planes.
What is the input common-mode voltage range for the LTC1442CN8, and how does it impact sensor interface design?
The LTC1442CN8 supports a common-mode input range from 0 V to VCC−1.5 V. If powered with 3.3 V, inputs near 2 V may still be valid, but exceeding 1.8 V could compromise accuracy. This feature allows direct connection to sensors powered from the same supply, reducing the need for level-shifting circuitry. However, care must be taken not to apply voltages below ground or above the supply, even for brief periods.
Can the LTC1442CN8 drive capacitive loads effectively, and what design steps are needed to maintain stability?
The LTC1442CN8 can directly drive loads up to 100 pF while remaining stable. Beyond this threshold, the phase margin degrades rapidly, potentially leading to oscillation. To ensure stability in high-capacitive environments, a small series resistor (e.g., 10–100 Ω) should be inserted at the output. This forms a dominant pole with the load capacitance, preserving bandwidth and preventing peaking in the frequency response.
How does the LTC1442CN8 compare to other op amps in terms of power consumption versus speed trade-offs?
The LTC1442CN8 draws 1.8 mA per channel at 5 V, offering a balance between speed and efficiency. Compared to higher-speed amplifiers like the LTC1440 (2.1 mA, similar GBW), it trades marginal bandwidth for lower quiescent current—a meaningful advantage in portable devices. However, it lacks the slew rate (0.5 V/µs) of faster parts like the LT1013 (13 V/µs), making it less ideal for driving large signals quickly.
What is the recommended input bias current specification for the LTC1442CN8, and why does it matter in high-impedance sensing applications?
The LTC1442CN8 has a maximum input bias current of 5 nA. In high-impedance sensor interfaces—such as piezoelectric transducers or high-value RTD circuits—this current can generate significant voltage drops across source impedances. For example, a 1 MΩ source impedance would produce a 5 mV offset due to bias current alone, necessitating matched input impedances or guarding techniques to minimize errors.
What package options exist for the LTC1442CN8, and how does thermal performance differ between DIP and smaller footprints?
The LTC1442CN8 is available in an 8-pin DIP (DIP8), which provides excellent heat dissipation due to direct metal contact with the socket base. While no SOIC version is listed, the DIP form facilitates easy prototyping and bench testing. Thermal resistance in air is relatively high (~100°C/W), so continuous power dissipation above 5 mW requires attention to airflow or derating.
Is the LTC1442CN8 suitable for battery-powered medical monitoring devices, and what design considerations apply?
Yes, the LTC1442CN8 is well-suited for low-power medical sensors due to its 2.7 V minimum supply and 1.8 mA quiescent current. When paired with a microcontroller running at 3.3 V, it enables accurate ECG or pulse oximetry signal amplification. However, input protection against electrostatic discharge (ESD) must be implemented externally, as the device lacks built-in ESD diodes, and long-term drift must be evaluated under varying temperatures.
How does the unity-gain stability of the LTC1442CN8 behave, and what limits its use in wideband buffer configurations?
The LTC1442CN8 is internally compensated for unity-gain stability and remains stable with capacitive loads up to 100 pF. However, its gain-bandwidth product is limited to 1.1 MHz, resulting in a settling time of ~1 µs to 0.1% for a full-scale step. This makes it unsuitable for video or RF buffering but acceptable for control loops with bandwidths below 100 kHz.
Can two LTC1442CN8 amplifiers be cascaded in a high-gain instrumentation amplifier stage, and what limitations arise?
Cascading two LTC1442CN8 stages (e.g., first stage gain = 10, second = 10) yields a total gain of 100 with degraded CMRR beyond ~80 dB due to mismatched offsets. Additionally, the second stage sees the full offset voltage amplified, compounding errors. For better performance, a dedicated instrumentation amplifier IC should be considered instead of discrete op amps.
What is the output short-circuit current capability of the LTC1442CN8, and how does it affect fault tolerance in power-sensitive designs?
The LTC1442CN8 can source or sink up to 25 mA before thermal shutdown activates. While sufficient for driving LEDs or relays briefly, sustained short-circuit conditions risk overheating in compact enclosures. Designers should include current-limiting resistors or fuse protection when interfacing with inductive loads or unregulated power rails.
How does the LTC1442CN8 perform in environments with rapid temperature changes, and what datasheet parameters guide reliability predictions?
Over the commercial temperature range (0°C to 70°C), the LTC1442CN8 maintains specifications including offset voltage and drift within ±1 mV. However, extended operation above 70°C requires derating per Linear Technology’s guidelines. Long-term aging effects are not explicitly detailed, so mission-critical systems should assume gradual parameter shift and incorporate calibration routines.
What layout precautions are essential when using the LTC1442CN8 on a PCB to preserve noise immunity?
To minimize noise pickup, the LTC1442CN8 should be placed close to signal sources, with Kelvin connections for feedback networks. Decoupling capacitors (0.1 µF ceramic + 10 µF tantalum) must be located within 1 cm of the V+ and V− pins. Analog ground traces should be isolated from digital return paths to prevent ground bounce affecting reference stability.
Does the LTC1442CN8 require external components for basic operation, and what minimal circuit configuration suffices?
No external components are strictly required for unity-gain operation. A simple voltage follower configuration using just two jumpers—one from output to inverting input, another from non-inverting input to signal source—provides stable buffering. However, adding bypass capacitors improves PSRR and reduces high-frequency ripple coupling into sensitive nodes.
How does the LTC1442CN8 compare to modern CMOS op amps in terms of input voltage noise density?
The LTC1442CN8 exhibits an input voltage noise density of 40 nV/√Hz, which is higher than advanced CMOS devices like the OPA333 (15 nV/√Hz). This makes it less suitable for ultra-low-noise applications such as photodiode preamplifiers. For such uses, newer architectures with chopper stabilization or auto-zeroing offer superior performance despite higher cost or complexity.
What are the lead time and availability concerns associated with sourcing the LTC1442CN8 today, given its age?
As a legacy part from Linear Technology (now part of Analog Devices), the LTC1442CN8 remains available through distributors but may face supply constraints during production ramp-ups. Engineers considering long-term projects should verify lifecycle status with authorized suppliers and evaluate migration paths to newer equivalents like the LTC1442CS8 or LTC1442IS8 for extended temperature or surface-mount needs.
Can the LTC1442CN8 be used in redundant or parallel configurations for increased output drive?
Parallel operation of multiple LTC1442CN8 units is generally discouraged due to current imbalance risks and lack of built-in matching. Even minor differences in offset or gain cause uneven current sharing, leading to thermal stress on one device. Instead, use a single higher-drive op amp or add series resistors with diodes to force current balancing—though this adds complexity without guaranteed reliability gains.

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    Sep 2, 2026

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    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

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    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
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    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
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    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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Linear Technology / Analog Devices

LTC1442CN8

Linear Technology / Analog Devices
32D-LTC1442CN8

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