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Analog Devices Inc. LTC2265IUJ-14#TRPBF
- Part No.:
- LTC2265IUJ-14#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2265IUJ-14#TRPBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,833
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Product details
Overview
LTC2265IUJ-14#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-frequency communications signal digitization. It delivers 73.7dB SNR, 90dB SFDR, and ultralow 0.15psRMS aperture jitter at 65Msps sampling rate, operating from a single 1.8V supply with serial LVDS outputs and 800MHz full-power bandwidth - ideal for cellular base station IF sampling.
For engineers reviewing the LTC2265IUJ-14#TRPBF datasheet, LTC2265IUJ-14#TRPBF pinout, LTC2265IUJ-14#TRPBF application, or LTC2265IUJ-14#TRPBF equivalent, this page provides verified specifications, validated pin functions, temperature-rated performance (–40°C to +85°C), and real-world design context for RF receiver chains, SDR front ends, and multichannel acquisition systems.
Technical Context
The LTC2265IUJ-14#TRPBF integrates two independent 14-bit ADC cores with shared PLL-based clock conditioning and a digital serializer driving LVDS outputs in 1- or 2-lane mode. Its sample-and-hold supports undersampling of IF signals up to 140MHz with <1.2LSBRMS transition noise and ±1LSB INL (typ) over temperature.
It features configurable input ranges (1VP-P to 2VP-P), internal/external reference selection via SENSE pin, SPI-configurable modes (shutdown, nap, output current), and differential or single-ended encode inputs compatible with LVDS, PECL, TTL, or CMOS clocks - all in a thermally enhanced 40-pin QFN package with exposed ground pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonicity and full code coverage across full industrial temperature range. |
| Sampling Rate | 65Msps - enables digitization of wideband IF signals up to ~32.5MHz Nyquist zone without aliasing. |
| SNR @ 70MHz | 73.7dBFS - ensures high-fidelity signal capture in demanding wireless receiver applications. |
| SFDR @ 70MHz | 90dBFS - suppresses harmonics and spurs critical for multi-carrier cellular and radar systems. |
| Aperture Jitter | 0.15psRMS - minimizes sampling uncertainty, enabling clean undersampling of 100+ MHz IFs. |
| Power Dissipation | 171mW total at 65Msps (2-lane, 1.75mA LVDS) - balances performance and thermal management in dense RF modules. |
| Supply Voltage | Single 1.8V analog (VDD) and 1.8V output (OVDD) - simplifies power delivery and reduces board-level noise coupling. |
Pinout & Package
Package: 40-lead (6mm × 6mm) plastic QFN with exposed thermal pad (Pin 41 = GND), rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+, AIN1– | Channel 1 differential analog input | Accepts 1–2VP-P signal with common-mode bias set by VCM1; supports DC-coupled or AC-coupled RF front ends. |
| ENC+, ENC– | Differential encode clock input | Triggers simultaneous sampling on both channels; accepts LVDS/PECL/TTL; internal duty cycle stabilizer maintains timing integrity. |
| OUT1A+/–, OUT1B+/– | LVDS serialized data outputs (Ch1) | In 2-lane mode: 2 bits per clock edge; in 1-lane mode: only OUT1A pair active - reduces PCB routing complexity. |
| DCO+, DCO– | Data clock output | Source-synchronous LVDS clock aligned to serialized data edges - eliminates skew-sensitive trace length matching. |
| FR+, FR– | Frame start output | Indicates start of new conversion frame; period equals twice ENC period in 2-lane mode - aids FPGA frame synchronization. |
| SENSE | Reference and input range programming | Selects ±0.5V (GND), ±1V (VDD), or ±0.8×VSENSE (external 0.625–1.3V) - enables flexible signal chain gain staging. |
| PAR/SER | Programming mode select | Ground = SPI serial control; VDD = parallel logic control (CS/SCK/SDI/SDO as GPIO) - simplifies configuration in resource-constrained systems. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Eliminates inter-channel skew for coherent I/Q or MIMO signal processing without external alignment circuitry. |
| Serial LVDS interface (1-/2-lane) | Reduces interface pin count by >50% vs parallel CMOS, enabling compact layout and lower EMI in high-density RF boards. |
| Internal clock duty cycle stabilizer | Allows use of asymmetric clock sources (e.g., crystal oscillators with 40/60% duty cycle) without degrading SNR or SFDR. |
| Configurable LVDS output current (1.75/3.5mA) | Optimizes signal integrity across varying trace lengths and termination schemes - avoids external resistors in many cases. |
| Shutdown and Nap modes | Reduces power to 1mW (shutdown) or 60mW (nap) - extends battery life in portable test equipment and field-deployable SDRs. |
Applications
| Cellular Base Station Receiver | Software Defined Radio (SDR) Front End |
|---|---|
|
Use Scenario: Digitizing dual-path IF signals (e.g., 70MHz/75MHz 2-tone) in LTE/5G macrocell transceivers. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC capturing I/Q data with <0.15ps jitter to preserve EVM and ACLR. Use Value: 90dB SFDR prevents adjacent channel interference; 73.7dB SNR supports 16-QAM/64-QAM demodulation at high SNR margins. |
Use Scenario: High-dynamic-range signal capture in reconfigurable radio platforms supporting multiple waveforms (FM, DAB, LTE). IC Role / Device Role / Timing Role: Dual-channel ADC providing phase-coherent sampling for real-time spectrum analysis and adaptive filtering. Use Value: 800MHz full-power bandwidth enables direct sampling of VHF/UHF bands; SPI programmability allows runtime mode switching. |
| Portable Medical Ultrasound Imaging | Multichannel Data Acquisition System |
|
Use Scenario: Beamforming front end in handheld ultrasound devices requiring low power and high SNR for echo signal fidelity. IC Role / Device Role / Timing Role: Dual ADC digitizing time-aligned RF echoes from transducer arrays with minimal aperture uncertainty. Use Value: 171mW total power enables battery operation; ±1LSB INL ensures accurate tissue boundary detection without calibration drift. |
Use Scenario: High-precision sensor fusion in industrial condition monitoring systems with synchronized analog inputs. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple physical sensors (vibration, temperature, acoustic emission) for time-correlated analysis. Use Value: Pin-compatible family (LTC2264/LTC2263) allows scalable channel count; LVDS serialization eases routing in 16+ channel backplanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9250BCPZ-65 | 14-bit, 65Msps, JESD204B serial interface; higher power (460mW); integrated digital downconverter (DDC). | Targets FPGA-based systems requiring embedded DDC and deterministic latency; not pin-compatible. | Choose AD9250 when JESD204B protocol integration and on-chip decimation are required - not for drop-in replacement. |
| LTC2264IUJ-14#TRPBF | Same pinout, package, and architecture; reduced 40Msps sampling rate; lower power (113mW total). | Optimized for cost- and power-sensitive applications where 40Msps meets bandwidth requirements (e.g., narrowband SDR). | Direct pin-compatible upgrade path within same footprint; ideal for design reuse with relaxed speed requirement. |
Compared with LTC2265IUJ-14#TRPBF, AD9250BCPZ-65 adds JESD204B and DDC but increases power and complexity, while LTC2264IUJ-14#TRPBF offers identical form-factor and feature set at lower speed and power - enabling scalable system design without PCB redesign.
Availability
LTC2265IUJ-14#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio, and portable medical imaging applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade (–40°C to +85°C).
Supply support for LTC2265IUJ-14#TRPBF 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and RF ICs, serving precision instrumentation, communications, and industrial markets.
The LTC2265IUJ-14#TRPBF belongs to Linear's high-speed ADC product line, engineered specifically for wideband, low-jitter digitization in communications infrastructure and test equipment where dynamic range and timing accuracy are critical.
FAQ
What is the maximum input frequency supported by the LTC2265IUJ-14#TRPBF?
The LTC2265IUJ-14#TRPBF features an 800MHz full-power bandwidth, enabling accurate digitization of analog inputs up to 800MHz with –3dB attenuation. For undersampling applications, it reliably captures IF signals such as 70MHz or 140MHz with 73.7dB SNR and 90dB SFDR at 65Msps - confirmed in Figure 6 and G04–G06 of the datasheet.
Does the LTC2265IUJ-14#TRPBF support external reference operation?
Yes, the LTC2265IUJ-14#TRPBF supports external reference operation via the SENSE pin. Applying a voltage between 0.625V and 1.3V to SENSE configures the input range to ±0.8×VSENSE, and the device maintains 1.2LSBRMS transition noise and ±1LSB INL (typ) - verified in the "ANALOG INPUT" and "INTERNAL REFERENCE CHARACTERISTICS" tables.
How does the LVDS serialization mode affect the interface timing of the LTC2265IUJ-14#TRPBF?
The LTC2265IUJ-14#TRPBF supports 1-lane (1 bit/clock) and 2-lane (2 bits/clock) LVDS serialization. In 2-lane mode at 65Msps, tSER = 1/(8 × 65MHz) ≈ 1.92ns; in 1-lane mode, tSER = 1/(16 × 65MHz) ≈ 0.96ns - directly impacting FPGA setup/hold timing and trace length matching requirements as defined in the TIMING CHARACTERISTICS table.
What is the purpose of the PAR/SER pin on the LTC2265IUJ-14#TRPBF?
The PAR/SER pin on the LTC2265IUJ-14#TRPBF selects programming mode: grounded for SPI serial control (CS/SCK/SDI/SDO as interface), or tied to VDD for parallel logic control (CS/SCK/SDI/SDO as GPIO). This dual-mode flexibility allows configuration in microcontroller-constrained or FPGA-rich environments - detailed in the PIN FUNCTIONS section (page 16).
Can the LTC2265IUJ-14#TRPBF operate with a single-ended encode clock?
Yes, the LTC2265IUJ-14#TRPBF supports single-ended encode operation: tie ENC– to GND and drive ENC+ with a 1.8V square wave (VIH ≥ 1.2V, VIL ≤ 0.6V). Performance remains specified - SNR = 73.7dB, SFDR = 90dB - though differential mode yields optimal jitter immunity as noted in the ENCODE INPUTS section.
LTC2265IUJ-14#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 65M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 40-QFN (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2265IUJ-14#TRPBF FAQ
1.How can I place an order for LTC2265IUJ-14#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2265IUJ-14#TRPBF 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 LTC2265IUJ-14#TRPBF reliable?
The price and inventory of LTC2265IUJ-14#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2265IUJ-14#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2265IUJ-14#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2265IUJ-14#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2265IUJ-14#TRPBF?
LTC2265IUJ-14#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2265IUJ-14#TRPBF 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 LTC2265IUJ-14#TRPBF?
For technical support, including LTC2265IUJ-14#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2265IUJ-14#TRPBF requirements.
6.How does Aetrix verify that LTC2265IUJ-14#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2265IUJ-14#TRPBF 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 LTC2265IUJ-14#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2265IUJ-14#TRPBF?
All LTC2265IUJ-14#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2265IUJ-14#TRPBF, 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 LTC2265IUJ-14#TRPBF part is unused and in its original packaging.
Return procedure for LTC2265IUJ-14#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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