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HomeProductsIntegrated Circuits (ICs)Data Acquisition - Analog to Digital Converters (ADC)LTC2156CUP-12#PBF
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LTC2156CUP-12#PBF - Analog Devices Inc.

Manufacturer Part Number
LTC2156CUP-12#PBF
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-LTC2156CUP-12#PBF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
12,320 pcs available, New & Original
Parts Description
IC ADC 12BIT PIPELINED 64QFN
Package
64-QFN (9x9)
Data sheet
LTC2156CUP-12#P.pdf

Datasheets

LTC2157/6/5-12.pdf

PCN Design/Specification

Mult Dev Marking Chg 18/Jul/2018.pdf
RoHs Status
ROHS3 Compliant
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In stock: 12320

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Specifications

LTC2156CUP-12#PBF Tech Specifications
Analog Devices Inc. - LTC2156CUP-12#PBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LTC2156CUP-12#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) 210M
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 12
Number of A/D Converters 2
Mounting Type Surface Mount
Input Type Differential
Features Simultaneous Sampling
Data Interface LVDS - Parallel
Configuration S/H-ADC
Base Product Number LTC2156
Architecture Pipelined

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN 3A991C2
HTSUS 8542.39.0001

Parts Introduction

LTC2156CUP-12#PBF Image
LTC2156CUP-12#PBF (1)

Manufacturer Part Number

LTC2156CUP-12#PBF

Manufacturer

analog-devices

Introduction

The LTC2156CUP-12#PBF is a high-performance, dual-channel, 12-bit analog-to-digital converter (ADC) with a sampling rate of up to 210 MSPS. It features simultaneous sampling on both channels, a pipelined architecture, and supports both external and internal voltage references.

Product Features and Performance

Dual-channel, 12-bit ADC with a sampling rate of up to 210 MSPS

Pipelined architecture for high-speed performance

Simultaneous sampling on both channels

Supports external and internal voltage references

Low power consumption of 225 mW at 210 MSPS

Product Advantages

Excellent dynamic performance with a signal-to-noise ratio (SNR) of 70 dB and an effective number of bits (ENOB) of 11.3

Flexible reference options allowing for optimized performance in various applications

Small 64-WFQFN package for space-constrained designs

Key Reasons to Choose This Product

High-speed performance with low power consumption for efficient system design

Simultaneous sampling on both channels for increased data throughput

Reliable and robust design from a trusted manufacturer, Analog Devices

Quality and Safety Features

Manufactured in an ISO-certified facility to ensure consistent quality

Robust design with protection against overvoltage and electrostatic discharge (ESD)

Compatibility

The LTC2156CUP-12#PBF is compatible with a wide range of digital and analog systems, making it suitable for a variety of applications.

Application Areas

Communications and networking equipment

Instrumentation and test equipment

Medical imaging systems

Industrial automation and control

Product Lifecycle

The LTC2156CUP-12#PBF is an active product, and there are no immediate plans for discontinuation. Equivalent or alternative models from Analog Devices may be available, and customers are advised to contact our website's sales team for the most up-to-date information.

Frequently Asked Questions(FAQ)

How does the LTC2156CUP-12#PBF compare to other 12-bit pipelined ADCs in terms of sampling rate and power efficiency for high-speed data acquisition systems?
The LTC2156CUP-12#PBF achieves a maximum sampling rate of 210 MSPS, placing it among the higher-performance 12-bit pipelined converters. Its dual-channel architecture with simultaneous sampling enables efficient capture of wideband signals without interchannel skew. Operating from a combined analog and digital supply range of 1.7V to 1.9V, it supports low-voltage designs critical in modern portable and industrial instrumentation. When evaluating alternatives, designers must balance this speed against resolution and noise floor—higher sample rates often increase dynamic range demands and clock jitter sensitivity. The device’s internal reference and LVDS parallel output simplify system integration while maintaining signal integrity over moderate trace lengths. For applications requiring sustained throughput above 200 MSPS at 12 bits, few competing devices offer both dual-channel capability and such tight supply tolerances without significant trade-offs in linearity or thermal performance.
What design considerations are essential when interfacing the LTC2156CUP-12#PBF to external circuitry, particularly regarding reference voltage stability and clock distribution?
The LTC2156CUP-12#PBF supports both internal and external references, but using an external precision reference significantly improves gain and offset accuracy across temperature. A stable reference source with low noise and drift is recommended, especially given the ADC’s 1.8V nominal operating voltage. Clocking must be tightly managed due to the ADC’s sensitivity to jitter; a clean, low-phase-noise clock source below 1 ps RMS jitter is advisable to maintain SFDR above 70 dB at 210 MSPS. The LVDS parallel interface requires careful PCB layout to avoid skew between data lanes and ensure timing margins meet setup/hold requirements. Differential inputs demand matched impedance paths and proper termination to preserve common-mode rejection. Thermal management is also relevant—though not extreme—given continuous operation near the 70°C upper limit, thermal gradients on the QFN package can affect long-term stability.
Can the LTC2156CUP-12#PBF support multi-stage daisy-chaining for synchronized sampling across multiple channels or boards?
While the LTC2156CUP-12#PBF includes simultaneous sampling within its own dual ADC core, it does not natively support hardware daisy-chaining like some SAR or Σ-Δ ADCs do. Synchronization across multiple devices would require external timing control via the SYNC input, coordinated through a master clock and possibly a global trigger signal. Each instance must share the same clock domain, and phase alignment between devices becomes critical for coherent processing. Given the LVDS output format, data alignment across chips depends on precise clock tree design and trace matching. Therefore, while feasible in controlled environments with disciplined engineering practices, true plug-and-play daisy chaining isn’t inherent to the architecture and adds complexity to jitter budgeting and synchronization logic.
How does the operating temperature range of the LTC2156CUP-12#PBF impact its use in industrial versus commercial applications?
The LTC2156CUP-12#PBF is rated for 0°C to 70°C, which aligns with standard commercial and industrial temperature grades but excludes extended automotive or military ranges. In industrial settings with moderate ambient variations and adequate thermal shielding, this range suffices for most monitoring and control tasks. However, in environments subject to rapid thermal transients or elevated operating conditions, derating may be necessary to prevent performance degradation—particularly in ENOB and THD. The device’s MSL 1 rating allows unlimited floor life after opening, aiding reliability in production flows, but long-term exposure to high humidity without packaging could compromise solder joint integrity during reflow. For applications demanding tighter thermal margins, alternative parts with broader temperature specifications should be evaluated despite potential cost or size penalties.
What are the key limitations of the LTC2156CUP-12#PBF when compared to higher-resolution ADCs like 14-bit or 16-bit alternatives?
The LTC2156CUP-12#PBF trades resolution for bandwidth, achieving 210 MSPS only at 12 bits. Higher-resolution converters typically max out well below 100 MSPS due to pipeline latency and circuit settling constraints. This makes the LTC2156 suitable for applications where dynamic range requirements are moderate but sample rate is paramount—such as software-defined radios or fast oscilloscopes. At full speed, the effective number of bits (ENOB) may drop below 11 under noisy conditions, limiting useful resolution. Additionally, the fixed 1:1 track-and-hold-to-converter ratio implies no oversampling benefit without external decimation, whereas lower-speed, higher-bit ADCs naturally accumulate more samples per conversion. Thus, choosing between these architectures hinges on whether the signal bandwidth or amplitude precision dominates system requirements.
Is the LTC2156CUP-12#PBF suitable for battery-powered instrumentation requiring ultra-low power consumption?
The LTC2156CUP-12#PBF operates at relatively modest power levels for its class—typically around 800 mW at 210 MSPS—but this still exceeds what many portable instruments aim for. While its 1.8V supply helps reduce voltage headroom loss, aggressive power saving isn’t built into the architecture; it lacks deep-sleep modes or variable-speed clocks. Alternatives with power gating, burst mode, or lower quiescent current might be preferable for coin-cell or USB-powered devices. That said, if throughput demands justify the power envelope and system cooling is manageable, the LTC2156 remains viable. Designers should consider duty-cycling the clock or disabling unused channels via firmware to marginally extend runtime, though this doesn’t fundamentally alter peak power characteristics.
How does the LVDS parallel interface of the LTC2156CUP-12#PBF affect board real estate and signal routing complexity?
The LTC2156CUP-12#PBF uses a 12-bit LVDS parallel bus, requiring approximately 24 differential pairs plus associated clocks and control lines. This consumes substantial PCB layer count, especially in compact designs, necessitating careful layer stack planning to maintain impedance control and minimize crosstalk. Routing must account for lane-to-lane skew under 1 ns to ensure valid data capture at 210 MSPS. The QFN-64 package itself occupies a 9x9 mm footprint, which is manageable but tight for manual assembly. Combined with decoupling capacitors and reference bypassing, total BOM area can grow quickly. Alternative interfaces like JESD204B/C offer serialization benefits but aren’t available here, so the trade-off is either accepting wider traces or moving to higher-layer-count PCBs—both increasing manufacturing cost.
What role does the internal reference play in the calibration and long-term accuracy of the LTC2156CUP-12#PBF?
The LTC2156CUP-12#PBF includes an internal bandgap reference that simplifies board layout by eliminating external components, but it trades absolute accuracy for convenience. Typical initial accuracy might be ±1%, degrading further with temperature drift unless compensated. For most measurement-grade applications, an external precision reference offers superior stability and reduces system-level calibration overhead. If the internal reference is used, periodic factory trimming or software correction may be needed to correct gain and offset errors. Over time, aging effects can shift reference voltage slightly, affecting long-term measurement consistency. Thus, while acceptable for prototyping or less stringent metrology roles, mission-critical systems benefit from externally sourced references with better specs.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LTC2156CUP-12#PBF

Product Attribute LTC2156CUP-12#TRPBF LTC2156IUP-12#PBF LTC2156IUP-12#TRPBF LTC2156CUP-14#PBF
Part Number LTC2156CUP-12#TRPBF LTC2156IUP-12#PBF LTC2156IUP-12#TRPBF LTC2156CUP-14#PBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Ratio - S/H:ADC - - - 1:1
Data Interface - LVDS - Parallel I²C LVDS - Parallel, Parallel
Architecture - Current Source R-2R Pipelined
Voltage - Supply, Digital - 1.14V ~ 1.26V 11.4V ~ 16.5V 1.65V ~ 3.6V
Configuration - - - S/H-ADC
Mounting Type - Surface Mount Through Hole Surface Mount
Number of Bits - 16 8 14
Input Type - - - Differential
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Number of Inputs - - - 2
Base Product Number - DAC34H84 MAX500 ADS62P42
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Sampling Rate (Per Second) - - - 65M
Features - - - Simultaneous Sampling
Reference Type - External, Internal External External, Internal
Number of A/D Converters - - - 2
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply, Analog - 3.14V ~ 3.46V 11.4V ~ 16.5V 3V ~ 3.6V

LTC2156CUP-12#PBF Datasheet PDF

Download LTC2156CUP-12#PBF pdf datasheets and Analog Devices Inc. documentation for LTC2156CUP-12#PBF - Analog Devices Inc..

Datasheets
LTC2157/6/5-12.pdf
PCN Design/Specification
Mult Dev Marking Chg 18/Jul/2018.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
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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:
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Contact us if you have any questions.
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LTC2156CUP-12#PBF Image

LTC2156CUP-12#PBF

Analog Devices Inc.
32D-LTC2156CUP-12#PBF

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