Analog Devices Inc. LTC2263IUJ-14#TRPBF

Overview

LTC2263IUJ-14#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for low-power, high-dynamic-range signal digitization at 25Msps. It delivers 73.4dB SNR and 90dB SFDR at 70MHz input, with ultralow 0.15ps_RMS aperture jitter, ±1LSB INL (typ), and full-power bandwidth of 800MHz - enabling undersampling in IF-receiver architectures for portable medical imaging and multichannel data acquisition.

For engineers reviewing the LTC2263IUJ-14#TRPBF datasheet, LTC2263IUJ-14#TRPBF pinout, LTC2263IUJ-14#TRPBF application, or LTC2263IUJ-14#TRPBF equivalent, key selection criteria include its 25Msps sampling rate, serial LVDS 1-/2-lane output interface, 1.8V single-supply operation, –40°C to +85°C industrial temperature grade, and QFN-40 (6mm × 6mm) package with exposed thermal pad.

Technical Context

The LTC2263IUJ-14#TRPBF integrates two independent 14-bit ADC cores with shared PLL-based clock conditioning and per-channel sample-and-hold amplifiers. Its architecture supports differential analog inputs (1V_P-P to 2V_P-P range), programmable internal/external reference selection via SENSE pin, and configurable LVDS output drive strength (1.75mA or 3.5mA) with optional on-chip 100Ω termination.

Digital interface flexibility includes SPI serial programming (via CS/SCK/SDI/SDO) or parallel mode (via PAR/SER, CS, SCK, SDI) for real-time configuration of serialization mode, output current, and power states (Nap, Shutdown). The device features a fixed 6-cycle pipeline latency and duty-cycle stabilizer for encode inputs across wide input duty cycle ranges.

Key Specifications

Pinout & Package

Package: 40-lead (6mm × 6mm) plastic QFN with exposed thermal pad (Pin 41 = GND), RoHS-compliant, lead-free finish. Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, 14-bit ADC applications.

Compared with AD9253BCPZ-25, the LTC2263IUJ-14#TRPBF offers superior IF undersampling capability via LVDS serialization and integrated jitter mitigation, while LTC2264IUJ-14#TRPBF provides a seamless speed upgrade within the same footprint and software stack - making both alternatives context-specific rather than drop-in replacements.

Availability

LTC2263IUJ-14#TRPBF is available at Aetrix Electronics and suitable for portable medical imaging, multichannel data acquisition, and nondestructive testing applications requiring stable component supply, industrial temperature support, and long-term production continuity.

Supply support for LTC2263IUJ-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 digital signal processing technologies, serving communications, industrial, automotive, and healthcare markets.

The LTC2263IUJ-14#TRPBF belongs to the LTC226x family of low-power, high-speed dual ADCs designed specifically for demanding communications and instrumentation applications where dynamic range, jitter performance, and power efficiency are critical.

FAQ

What is the maximum sampling frequency supported by the LTC2263IUJ-14#TRPBF?

The LTC2263IUJ-14#TRPBF is rated for a maximum sampling frequency of 25Msps, as confirmed in the "Timing Characteristics" table of its datasheet. This defines its Nyquist bandwidth limit at 12.5MHz and is fixed per speed grade - unlike the pin-compatible LTC2264IUJ-14#TRPBF (40Msps) or LTC2265IUJ-14#TRPBF (65Msps), which share the same package and feature set but differ in maximum clock rate.

Does the LTC2263IUJ-14#TRPBF support external reference operation?

Yes, the LTC2263IUJ-14#TRPBF supports external reference operation via the SENSE pin (Pin 38). Applying a voltage between 0.625V and 1.3V to SENSE configures the input range to ±0.8×V_SENSE, allowing precise matching to external signal chain gains. Internal reference mode (1.25V) is selected by tying SENSE to VDD or GND, as detailed in the "INTERNAL REFERENCE CHARACTERISTICS" section.

How does the LVDS serialization mode affect data throughput and interface timing for the LTC2263IUJ-14#TRPBF?

The LTC2263IUJ-14#TRPBF supports 1-lane (1-bit per clock edge) and 2-lane (2-bit per clock edge) LVDS serialization. At 25Msps, 2-lane mode yields a 50Mbps per data pair serial rate, while 1-lane mode halves that to 25Mbps - relaxing timing margins and reducing FPGA I/O resource usage. Frame (FR) and data clock (DCO) signals remain active in both modes to maintain synchronization.

What power-saving modes are available on the LTC2263IUJ-14#TRPBF, and how are they activated?

The LTC2263IUJ-14#TRPBF offers Nap mode (60mW) and Shutdown mode (1mW), both controlled via SPI register writes or parallel logic inputs (SDI in parallel mode). Nap mode retains register settings and reference bias while disabling ADC cores; Shutdown powers down all analog and digital circuitry except wake-up logic. Both modes are documented in the "Power Requirements" section with current specifications.

Is the LTC2263IUJ-14#TRPBF pin-compatible with other members of the LTC226x-14 family?

Yes, the LTC2263IUJ-14#TRPBF is fully pin-compatible with the LTC2264IUJ-14#TRPBF and LTC2265IUJ-14#TRPBF - all use the identical 40-pin QFN (6mm × 6mm) package with identical pin functions, power domains, and LVDS output assignments. This allows hardware reuse across 25Msps, 40Msps, and 65Msps variants without PCB redesign.