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HomeProductsIntegrated Circuits (ICs)Data Acquisition - Analog to Digital Converters (ADC)LTC2143CUP-14#PBF
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LTC2143CUP-14#PBF - Analog Devices Inc.

Manufacturer Part Number
LTC2143CUP-14#PBF
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-LTC2143CUP-14#PBF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
17,822 pcs available, New & Original
Parts Description
IC ADC 14BIT PIPELINED 64QFN
Package
64-QFN (9x9)
Data sheet
LTC2143CUP-14#P.pdf

PCN Design/Specification

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
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In stock: 17822

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Specifications

LTC2143CUP-14#PBF Tech Specifications
Analog Devices Inc. - LTC2143CUP-14#PBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LTC2143CUP-14#PBF

Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
Voltage - Supply, Digital 1.7V ~ 1.9V
Voltage - Supply, Analog 1.7V ~ 1.9V
Supplier Device Package 64-QFN (9x9)
Series -
Sampling Rate (Per Second) 80M
Reference Type External, Internal
Ratio - S/H:ADC 1:1
Package / Case 64-WFQFN Exposed Pad
Package Tube
Operating Temperature 0°C ~ 70°C
Product Attribute Attribute Value
Number of Inputs 2
Number of Bits 14
Number of A/D Converters 2
Mounting Type Surface Mount
Input Type Differential
Features Simultaneous Sampling
Data Interface LVDS - Parallel, Parallel
Configuration S/H-ADC
Base Product Number LTC2143
Architecture Pipelined

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN 3A991C3
HTSUS 8542.39.0001

Parts Introduction

LTC2143CUP-14#PBF Image
LTC2143CUP-14#PBF (1)

Manufacturer Part Number

LTC2143CUP-14#PBF

Manufacturer

analog-devices

Introduction

The LTC2143CUP-14#PBF is a high-performance, dual-channel, 14-bit analog-to-digital converter (ADC) from Analog Devices. It features a high sampling rate of 80 MSPS, making it suitable for a wide range of applications, including communications, instrumentation, and medical imaging.

Product Features and Performance

14-bit resolution

80 MSPS sampling rate

Dual-channel, differential input

LVDS and parallel data interfaces

Simultaneous sampling

Pipelined architecture

External and internal reference options

7V to 1.9V analog and digital supply voltages

0°C to 70°C operating temperature range

64-pin WFQFN exposed pad package

Product Advantages

High-speed, high-resolution performance

Simultaneous sampling for improved accuracy

Flexible data interface options

Low power consumption

Wide operating temperature range

Key Reasons to Choose This Product

Exceptional performance for demanding applications

Versatile design for various system requirements

Reliable and proven technology from Analog Devices

Cost-effective solution for high-speed data acquisition

Quality and Safety Features

Robust design and manufacturing process

Rigorous testing and quality control

Compliance with industry standards and regulations

Compatibility

The LTC2143CUP-14#PBF is compatible with a wide range of system architectures and can be seamlessly integrated into various electronics applications.

Application Areas

Communications systems

Instrumentation and test equipment

Medical imaging devices

Industrial automation and control

Audio and video signal processing

Product Lifecycle

The LTC2143CUP-14#PBF is an active product, and our website's sales team continues to support it. There are no immediate plans for discontinuation. However, as technology evolves, customers are advised to contact our website's sales team for the latest information on product availability and potential alternative or equivalent models.

Frequently Asked Questions(FAQ)

What are the key performance trade-offs when selecting the LTC2143CUP-14#PBF for high-speed data acquisition systems?
The LTC2143CUP-14#PBF offers a 14-bit resolution with an 80 MSPS sampling rate, making it suitable for demanding applications such as wideband signal capture. However, this performance level is achieved within strict supply voltage constraints—both analog and digital supplies must operate between 1.7V and 1.9V—which may limit compatibility with legacy or non-low-voltage system architectures. Additionally, while the dual pipelined architecture supports simultaneous sampling of two differential inputs, the design must account for potential interleaving artifacts and ensure proper layout to minimize channel crosstalk. Engineers should evaluate whether the effective number of bits (ENOB) under real-world conditions meets expectations, especially given temperature operating limits of 0°C to 70°C, which can affect linearity and noise performance.
How does the LTC2143CUP-14#PBF compare to single-channel 14-bit ADCs in terms of system integration complexity and timing control?
Unlike single-channel converters, the LTC2143CUP-14#PBF provides two independent A/D channels with simultaneous sampling capability, which reduces timing skew between signals but increases control logic complexity. Each channel operates at up to 80 MSPS, so designers must synchronize clock distribution and manage parallel LVDS or parallel output data streams efficiently. This dual-channel configuration can reduce board space and power consumption per channel compared to using two separate single-channel devices, but requires careful attention to phase matching and reference stability across both conversion paths. The integrated nature also simplifies calibration routines, assuming matched front-end circuitry.
What layout considerations are critical when implementing the LTC2143CUP-14#PBF in a PCB design to maintain ADC performance?
Given its high speed and sensitivity, the LTC2143CUP-14#PBF demands meticulous PCB layout to preserve dynamic range and spurious-free performance. Differential input traces should be tightly coupled and length-matched to prevent skew-induced errors. The 64-QFN package has an exposed thermal pad that must be properly connected to a solid ground plane for heat dissipation and EMI reduction. Power supply decoupling should use low-ESR capacitors placed as close as possible to the VDD pins, particularly for both analog (1.7–1.9V) and digital (1.7–1.9V) rails. Separating analog and digital return paths helps avoid ground loops that could couple noise into sensitive analog inputs.
Can the LTC2143CUP-14#PBF operate reliably in industrial environments outside its specified temperature range?
The LTC2143CUP-14#PBF is rated for operation from 0°C to 70°C, which aligns with commercial-grade components but excludes most industrial (-40°C to +85°C) or automotive applications without derating. Operating beyond these limits risks increased offset drift, degraded SNR, and potential functional failure due to semiconductor junction behavior. While some margin may exist near the upper bound, long-term reliability and consistent ENOB cannot be guaranteed outside the datasheet specifications. For extended temperature ranges, engineers should consider alternative parts with wider ratings or implement environmental controls.
What impact does external versus internal reference selection have on the LTC2143CUP-14#PBF’s accuracy and noise floor?
The LTC2143CUP-14#PBF supports both internal and external references, each offering distinct trade-offs. An internal reference reduces component count and simplifies layout but typically exhibits higher temperature drift (±5 ppm/°C typical) and limited precision, potentially reducing LSB resolution over time. In contrast, an external precision reference—such as one with <1 ppm/°C drift—can improve absolute accuracy and stability, especially important for multi-channel or long-duration acquisitions. However, this adds BOM cost and footprint. For many 14-bit systems, an external reference becomes beneficial only if tighter than ±1 LSB tolerance is required across temperature.
How does the ratio of sample-and-hold to ADC stages in the LTC2143CUP-14#PBF influence transient response and aperture uncertainty?
The LTC2143CUP-14#PBF features a 1:1 S/H-to-ADC ratio, meaning each conversion stage includes its own sample-and-hold function. This pipelined architecture introduces predictable latency—typically 6 cycles plus overhead—but ensures accurate reconstruction of fast transients up to the Nyquist frequency (40 MHz). Aperture uncertainty remains minimal due to internal track-and-hold buffering, though exact timing depends on clock jitter. Designers modeling impulse responses should account for this fixed delay rather than assuming instantaneous conversion, which affects synchronization with other system blocks like DSP pipelines.
Is the LTC2143CUP-14#PBF suitable for battery-powered instrumentation requiring low quiescent current?
Although the LTC2143CUP-14#PBF consumes relatively low power for its class (~45 mW typical), continuous 80 MSPS operation inherently demands significant current draw. At full speed, the device draws several tens of mA from both analog and digital supplies. For ultra-low-power applications, intermittent sampling modes or lower-throughput variants may be more appropriate. Engineers considering battery life should evaluate duty cycle requirements and explore shutdown modes, though the part lacks deep sleep functionality, limiting energy savings during idle periods.
What are the implications of using LVDS versus parallel outputs on the LTC2143CUP-14#PBF for FPGA interfacing?
The LTC2143CUP-14#PBF supports both LVDS and parallel output formats, offering flexibility depending on FPGA capabilities and data throughput needs. LVDS reduces pin count and electromagnetic emissions by serializing high-speed data, easing routing congestion on densely populated boards. However, it requires serializer/deserializer (SerDes) resources on the FPGA and adds latency from deserialization. Parallel outputs simplify timing closure and enable direct word-aligned transfer but consume more board space and generate higher crosstalk. For 80 MSPS × 14 bits = 1.12 Gbps aggregate bandwidth, LVDS is often preferred unless the FPGA lacks high-speed I/O lanes.
How do the simultaneous sampling features of the LTC2143CUP-14#PBF benefit multi-sensor measurement systems?
Simultaneous sampling on both channels of the LTC2143CUP-14#PBF ensures that two input signals are captured at precisely the same instant, eliminating temporal misalignment caused by sequential conversion. This is critical in applications like motor control feedback, where phase-sensitive measurements or differential current sensing require coherent data pairs. Without simultaneous sampling, even nanosecond-level skew could distort results in high-bandwidth scenarios. The built-in feature simplifies system design by removing the need for external sample-and-hold circuits or staggered clocks, reducing component count and synchronization complexity.
What are the risks associated with exceeding the maximum junction temperature of the LTC2143CUP-14#PBF?
Exceeding the maximum junction temperature (typically 125°C) risks permanent damage to the semiconductor die, accelerated aging, and parametric drift such as gain error or offset variation. Although the device is rated for 0°C to 70°C ambient operation, self-heating from internal power dissipation (up to ~70°C rise in worst-case airflow) must be factored into thermal management. Poor PCB thermal conductivity or insufficient copper area beneath the exposed pad can push local temperatures beyond safe thresholds. Reliability testing under worst-case conditions is recommended to validate long-term operation in sealed enclosures or high-ambient environments.
How does the Moisture Sensitivity Level (MSL) rating of MSL 1 affect handling and storage of the LTC2143CUP-14#PBF?
With an MSL 1 rating, the LTC2143CUP-14#PBF poses no moisture-related risk during normal assembly processes, including reflow soldering. It can be stored indefinitely under dry conditions without baking prior to use, simplifying inventory management. This makes it ideal for high-volume production environments where lead time and logistics favor long-term stockpiling. However, once removed from its original moisture-protective packaging, standard ESD precautions remain essential due to the sensitive CMOS inputs and outputs.
What design steps are necessary to verify correct initialization and calibration of the LTC2143CUP-14#PBF in a new system?
Before relying on raw ADC output, engineers must validate reference voltage stability, input signal conditioning, and digital interface handshake protocols. Initialization involves configuring the internal registers via SPI (if supported) or ensuring default settings align with intended operation—especially critical after power-up transients. Calibration typically requires capturing known DC levels (e.g., mid-scale or shorted inputs) to measure offset and gain errors. Given the 14-bit resolution, even small deviations (<0.5 LSB) can significantly affect measurement integrity, necessitating careful test fixtures and statistical validation across multiple units.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LTC2143CUP-14#PBF

Product Attribute LTC2143CUP-14#TRPBF LTC2143CUP-12#PBF LTC2143IUP-14#PBF LTC2143IUP-14#TRPBF
Part Number LTC2143CUP-14#TRPBF LTC2143CUP-12#PBF LTC2143IUP-14#PBF LTC2143IUP-14#TRPBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Configuration - - - S/H-ADC
Series - - - -
Data Interface - LVDS - Parallel I²C LVDS - Parallel, Parallel
Number of Inputs - - - 2
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Features - - - Simultaneous Sampling
Input Type - - - Differential
Base Product Number - DAC34H84 MAX500 ADS62P42
Sampling Rate (Per Second) - - - 65M
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Architecture - Current Source R-2R Pipelined
Number of A/D Converters - - - 2
Reference Type - External, Internal External External, Internal
Ratio - S/H:ADC - - - 1:1
Number of Bits - 16 8 14
Voltage - Supply, Digital - 1.14V ~ 1.26V 11.4V ~ 16.5V 1.65V ~ 3.6V
Voltage - Supply, Analog - 3.14V ~ 3.46V 11.4V ~ 16.5V 3V ~ 3.6V

LTC2143CUP-14#PBF Datasheet PDF

Download LTC2143CUP-14#PBF pdf datasheets and Analog Devices Inc. documentation for LTC2143CUP-14#PBF - Analog Devices Inc..

Datasheets
Cylindrical Battery Holders.pdf
PCN Design/Specification
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    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.

  • Ilen***
    Aug 20, 2026

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

  • Indu***ialPower
    Aug 17, 2026

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

  • Nikh***ech
    Aug 13, 2026

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

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LTC2143CUP-14#PBF Image

LTC2143CUP-14#PBF

Analog Devices Inc.
32D-LTC2143CUP-14#PBF

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