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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Analog to Digital Converters (ADC)

Analog Devices Inc. LTC2274IUJ#PBF

Name: LTC2274IUJ#PBF
Brand: Analog Devices Inc.
SKU: LTC2274IUJ#PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LTC2274IUJ#PBF

Manufacturer:: Analog Devices Inc.

Category:: Analog to Digital Converters (ADC)

Package:: 40-WFQFN Exposed Pad

Datasheet:: LTC2274IUJ#PBF.pdf

Description:: IC ADC 16BIT PIPELINED 40QFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LTC2274IUJ#PBF from Analog Devices (acquired Linear Technology) is a 16-bit, 105 Msps high-speed analog-to-digital converter with JESD204 serial interface, 700 MHz full-power bandwidth, ±4.5 LSB INL, and 77.7 dBFS noise floor. It digitizes wide dynamic range RF/IF signals in cellular base stations and spectrum analyzers using a PGA front end and ultra-low 80 fs RMS aperture jitter.

For engineers reviewing the LTC2274IUJ#PBF datasheet, LTC2274IUJ#PBF pinout, LTC2274IUJ#PBF application, or LTC2274IUJ#PBF equivalent, key selection criteria include JESD204B compliance, 1.5 V_P-P/2.25 V_P-P programmable input range, CML serial output timing, internal dither capability, and –40°C to +85°C industrial temperature rating.

Technical Context

The LTC2274IUJ#PBF implements a 16-bit pipelined ADC core with integrated sample-and-hold, 8B/10B serializer, and PLL-based 20× clock multiplier for JESD204-compliant serial output. Its architecture supports both differential and single-ended encode clock inputs with duty cycle stabilization.

It features a programmable gain amplifier (PGA = 0 or 1) selecting 2.25 V_P-P or 1.5 V_P-P input range, optional internal dither, and configurable synchronization via SYNC+/SYNC– pins compliant with JESD204 frame alignment requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
Resolution	16-bit - delivers 96.3 dB theoretical SNR, enabling high-fidelity digitization of wideband RF signals
Sample Rate	105 Msps - supports Nyquist sampling of up to 52.5 MHz baseband or undersampling of multi-hundred-MHz IF signals
Noise Floor	77.7 dBFS - ensures >12.5 ENOB at low input frequencies, critical for receiver sensitivity
SFDR	100 dBc (2nd/3rd harmonic, 5 MHz) - suppresses spurious content in dense spectral environments like LTE base stations
Input Bandwidth	700 MHz - enables direct sampling of L-band and S-band RF signals without downconversion
Aperture Jitter	80 fs RMS - limits SNR degradation to <0.1 dB at 250 MHz input, essential for undersampling accuracy
Power Dissipation	1300 mW - requires thermal management on PCBs with exposed pad soldered to ground plane
Supply Voltage	3.3 V analog (VDD), 1.2–3.3 V output (OVDD) - supports flexible CML termination (50 Ω DC-coupled or 100 Ω diff)

Pinout & Package

40-pin 6 mm × 6 mm plastic QFN package (UJ) with exposed thermal pad (Pin 41, GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.

Pin/Terminal	Circuit Role	Design Meaning
AIN+, AIN–	Differential analog input	Accepts 1.5 V_P-P or 2.25 V_P-P signal with 1 V–1.5 V common-mode; 6.7 pF input capacitance in sample mode
ENC+, ENC–	Differential encode clock input	Edge-triggered sampling; supports sine, LVDS, PECL, TTL, CMOS; includes duty cycle stabilizer
CMLOUT+, CMLOUT–	JESD204-compliant CML serial output	2.1 Gbps (20×105 Msps) differential data stream; 50 Ω single-ended or 100 Ω differential termination
SYNC+, SYNC–	Frame synchronization request	Active-low SYNC+ initiates JESD204 lane alignment; supports K28.5 comma detection and idle sync mode
PGA, DITH, MSBINV	Configuration control inputs	Set input range (1×/1.5×), enable dither for SFDR improvement, select 2's complement output format
VDD, OVDD, GND	Power supply terminals	VDD = 3.3 V analog rail (12 pins); OVDD = 1.2–3.3 V output driver rail (2 pins); 13 GND pins + exposed pad

Key Features

Feature	Design Value
JESD204 Serial Interface	Reduces PCB trace count vs parallel interface; enables FPGA/ASIC connectivity with deterministic latency (9-cycle pipeline)
Programmable Gain Amplifier	Switches between 2.25 V_P-P (PGA=0) and 1.5 V_P-P (PGA=1) input ranges to match signal chain dynamic range
Internal Dither	Improves SFDR by ≥10 dB at –25 dBFS input when enabled, mitigating harmonic distortion from quantization nonlinearity
Clock Duty Cycle Stabilizer	Enables full 105 Msps operation with encode clocks having 30%–70% duty cycle, relaxing clock source requirements
Ultra-Low Aperture Jitter	80 fs RMS enables clean undersampling of 250 MHz signals with >73 dB SNR, verified per Figure G19
Industrial Temperature Range	Specified over –40°C to +85°C (I-grade), supporting deployment in outdoor base stations and industrial test equipment

Applications

Cellular Base Station Receiver	Spectrum Analyzer Front End
Use Scenario: Digitizing 70–250 MHz IF signals from zero-IF or low-IF radio architectures in LTE/FDD/TDD macrocells. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth with JESD204B serialization to FPGA-based digital downconverters. Use Value: 100 dB SFDR and 77.7 dBFS noise floor preserve adjacent channel power ratio (ACPR) and error vector magnitude (EVM) in multi-carrier systems.	Use Scenario: High-resolution frequency-domain analysis of broadband signals up to 250 MHz in benchtop and portable analyzers. IC Role / Device Role / Timing Role: Primary digitizer with 700 MHz full-power bandwidth enabling direct sampling without preselector filtering. Use Value: 80 fs RMS jitter and 105 Msps rate support accurate FFT-based spectral estimation with minimal scalloping loss.
ATE Digital Receiver Module	Imaging System Data Acquisition
Use Scenario: High-accuracy stimulus-response measurement in automated test equipment for RF components and transceivers. IC Role / Device Role / Timing Role: Precision ADC capturing transient response waveforms and modulated signals with calibrated DC specs (±4.5 LSB INL). Use Value: ±1 LSB DNL (no missing codes) and low offset drift (±10 μV/°C) ensure measurement repeatability across temperature and time.	Use Scenario: Digitizing ultrasound echo signals or radar return pulses requiring wide dynamic range and low noise. IC Role / Device Role / Timing Role: Signal acquisition front end interfacing with low-noise amplifiers and anti-alias filters before beamforming or pulse compression. Use Value: PGA front end adapts input range to varying echo amplitudes; internal dither improves SFDR for weak-signal detection in cluttered environments.

Cellular Base Station Receiver

Spectrum Analyzer Front End

Use Scenario: Digitizing 70–250 MHz IF signals from zero-IF or low-IF radio architectures in LTE/FDD/TDD macrocells.

IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth with JESD204B serialization to FPGA-based digital downconverters.

Use Value: 100 dB SFDR and 77.7 dBFS noise floor preserve adjacent channel power ratio (ACPR) and error vector magnitude (EVM) in multi-carrier systems.

Use Scenario: High-resolution frequency-domain analysis of broadband signals up to 250 MHz in benchtop and portable analyzers.

IC Role / Device Role / Timing Role: Primary digitizer with 700 MHz full-power bandwidth enabling direct sampling without preselector filtering.

Use Value: 80 fs RMS jitter and 105 Msps rate support accurate FFT-based spectral estimation with minimal scalloping loss.

ATE Digital Receiver Module

Imaging System Data Acquisition

Use Scenario: High-accuracy stimulus-response measurement in automated test equipment for RF components and transceivers.

IC Role / Device Role / Timing Role: Precision ADC capturing transient response waveforms and modulated signals with calibrated DC specs (±4.5 LSB INL).

Use Value: ±1 LSB DNL (no missing codes) and low offset drift (±10 μV/°C) ensure measurement repeatability across temperature and time.

Use Scenario: Digitizing ultrasound echo signals or radar return pulses requiring wide dynamic range and low noise.

IC Role / Device Role / Timing Role: Signal acquisition front end interfacing with low-noise amplifiers and anti-alias filters before beamforming or pulse compression.

Use Value: PGA front end adapts input range to varying echo amplitudes; internal dither improves SFDR for weak-signal detection in cluttered environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD9653BCPZ-125	16-bit, 125 Msps, JESD204A interface, 750 MHz BW, 78.2 dBFS SNR, requires external reference	Higher sample rate but lacks integrated PGA and internal dither; uses different serial protocol version	Select when higher throughput is required and system can accommodate external reference and JESD204A FPGA IP
LTC2273IUJ#PBF	16-bit, 80 Msps, same pinout/package, identical JESD204 interface and feature set, lower power (1050 mW)	Direct drop-in replacement with reduced sample rate; suitable where 80 Msps meets bandwidth needs	Choose for cost-sensitive or thermally constrained designs where 80 Msps suffices and PCB layout reuse is prioritized

Compared with AD9653BCPZ-125 and LTC2273IUJ#PBF, the LTC2274IUJ#PBF uniquely balances 105 Msps speed with integrated PGA, internal dither, and industrial temperature rating in a pin-compatible family-making it optimal for upgrade paths from LTC2273 or migration from legacy parallel-output ADCs requiring JESD204 simplification.

Availability

LTC2274IUJ#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, test instrumentation, and defense electronics requiring stable component supply, long-term obsolescence management, and traceable sourcing.

Supply support for LTC2274IUJ#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, acquired Linear Technology in 2017.

The LTC2274IUJ#PBF belongs to ADI's high-speed data converter product line, engineered for demanding communications and instrumentation applications requiring wide bandwidth, low jitter, and JESD204B interoperability.

FAQ

What is the maximum input frequency supported by the LTC2274IUJ#PBF?

The LTC2274IUJ#PBF has a 700 MHz full-power bandwidth, meaning it maintains ≤3 dB gain flatness up to 700 MHz for a full-scale input. Verified performance data shows usable SFDR >82 dBc at 250 MHz input with 1.5 V_P-P range and PGA = 1, confirming robust high-frequency operation well beyond Nyquist for undersampling applications.

Does the LTC2274IUJ#PBF require an external reference voltage?

No, the LTC2274IUJ#PBF includes an internal 2.5 V bandgap reference. The SENSE pin selects reference mode: tying SENSE to VDD activates the internal reference, while applying 2.5 V or 1.25 V externally sets the same 2.25 V_P-P full-scale range (with PGA = 0). No external reference is needed for standard operation.

How does the internal dither function improve performance in the LTC2274IUJ#PBF?

When enabled via the DITH pin, internal dither adds controlled noise to the ADC transfer function, breaking up harmonic correlation and reducing spurious content. As shown in Figures G07/G08, SFDR improves from 105 dBFS (dither off) to 115 dBFS (dither on) at –25 dBFS input, directly enhancing dynamic range in low-level signal detection scenarios.

What are the power supply requirements for the LTC2274IUJ#PBF?

The LTC2274IUJ#PBF requires two supplies: VDD = 3.3 V ±3.5% (3.135 V to 3.465 V) for analog circuitry, and OVDD = 1.2 V to 3.3 V for CML outputs. At 105 Msps, typical analog supply current is 450 mA (1485 mW total dissipation), necessitating proper decoupling with 0.1 µF ceramics on all VDD/OVDD pins and thermal pad grounding.

Is the LTC2274IUJ#PBF pin-compatible with other devices in the LTC227x family?

Yes, the LTC2274IUJ#PBF is pin-compatible with the LTC2273IUJ#PBF (80 Msps) and LTC2272IUJ#PBF (65 Msps) in the same 40-pin 6 mm × 6 mm QFN package. This allows scalable design reuse across sample rate tiers while maintaining identical footprint, power, and interface connections-reducing layout effort and qualification time.

LTC2274IUJ#PBF Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 40-WFQFN Exposed Pad

Packaging:: Tube

Product Status:: Active

Number of Bits:: 16

Sampling Rate (Per Second):: 105M

Number of Inputs:: 1

Input Type:: Differential

Data Interface:: JESD204

Configuration:: S/H-ADC

Ratio - S/H:ADC:: 1:1

Number of A/D Converters:: 1

Architecture:: Pipelined

Reference Type:: External, Internal

Voltage - Supply, Analog:: 3.135V ~ 3.465V

Voltage - Supply, Digital:: 3.135V ~ 3.465V

Features:: PGA

Operating Temperature:: -40°C ~ 85°C

Supplier Device Package:: 40-QFN (6x6)

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

LTC2274IUJ#PBF FAQ

1.How can I place an order for LTC2274IUJ#PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC2274IUJ#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 LTC2274IUJ#PBF reliable?

The price and inventory of LTC2274IUJ#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2274IUJ#PBF is usually 5 days.

3.What payment methods are accepted for LTC2274IUJ#PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2274IUJ#PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC2274IUJ#PBF?

LTC2274IUJ#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC2274IUJ#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 LTC2274IUJ#PBF?

For technical support, including LTC2274IUJ#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2274IUJ#PBF requirements.

6.How does Aetrix verify that LTC2274IUJ#PBF is sourced from the original manufacturer or authorized distributors?

All LTC2274IUJ#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 LTC2274IUJ#PBF meets industry standards.

7.What is the process for return or replacement of LTC2274IUJ#PBF?

All LTC2274IUJ#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2274IUJ#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 LTC2274IUJ#PBF part is unused and in its original packaging.

Return procedure for LTC2274IUJ#PBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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