Analog Devices Inc. LTC2263CUJ-12#TRPBF

Overview

LTC2263CUJ-12#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for low-power, high-dynamic-range signal digitization at 25Msps. It delivers 70.5dB SNR and 90dB SFDR at 70MHz input, features ultralow 0.15psRMS aperture jitter, and operates from a single 1.8V supply - enabling direct integration into portable medical imaging front-ends and multichannel data acquisition systems.

For engineers reviewing the LTC2263CUJ-12#TRPBF datasheet, LTC2263CUJ-12#TRPBF pinout, LTC2263CUJ-12#TRPBF application, or LTC2263CUJ-12#TRPBF equivalent, key selection criteria include its 25Msps sampling rate, serial LVDS output architecture (1- or 2-lane), ±0.3LSB INL, 800MHz full-power bandwidth, and QFN-40 (6mm × 6mm) package with exposed thermal pad.

Technical Context

The LTC2263CUJ-12#TRPBF employs a dual 12-bit ADC core with independent sample-and-hold circuits, supporting true simultaneous sampling across two channels. Its internal clock duty cycle stabilizer enables robust operation with non-50% encode clocks, while the serial LVDS interface reduces pin count by transmitting 1 or 2 bits per channel per clock edge.

It integrates an internal 1.25V reference with ±25ppm/°C drift and supports external reference via the SENSE pin (0.625V–1.3V). Input common-mode bias is provided by dual VCM outputs (pins 3 and 8), each nominally at VDD/2, and analog inputs accept 1VP-P to 2VP-P differential ranges with 800MHz full-power bandwidth.

Key Specifications

Pinout & Package

Package: 40-lead (6mm × 6mm) plastic QFN (UJ) with exposed thermal pad (Pin 41 = GND), rated for 0°C to 70°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, 12-bit ADC applications.

Compared with ADS52J90IRGCT and LTC2264CUJ-12#TRPBF, the LTC2263CUJ-12#TRPBF offers the lowest power (94mW) and smallest thermal footprint among 12-bit dual ADCs in this performance class, making it optimal for size- and battery-constrained applications where 25Msps suffices.

Availability

LTC2263CUJ-12#TRPBF is available at Aetrix Electronics and suitable for portable medical imaging, multichannel data acquisition, nondestructive testing, and software defined radios requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.

Supply support for LTC2263CUJ-12#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2263CUJ-12#TRPBF belongs to ADI's high-speed precision ADC product line, engineered for applications demanding low power, high dynamic range, and simultaneous dual-channel capture - particularly in portable instrumentation and communications infrastructure.

FAQ

What is the maximum sampling rate supported by the LTC2263CUJ-12#TRPBF?

The LTC2263CUJ-12#TRPBF is rated for a maximum sampling rate of 25Msps. This is its designated speed grade within the LTC2265/LTC2264/LTC2263 family - lower than the 65Msps (LTC2265) and 40Msps (LTC2264) variants. Exceeding 25Msps may result in degraded AC performance, including reduced SNR and SFDR, and is not guaranteed by specification.

Does the LTC2263CUJ-12#TRPBF support external reference voltage?

Yes, the LTC2263CUJ-12#TRPBF supports external reference via the SENSE pin (Pin 38). Applying a voltage between 0.625V and 1.3V to SENSE selects an external reference mode, enabling custom full-scale ranges and improved system-level accuracy when paired with a low-drift external reference IC.

How does the LVDS serialization mode affect data throughput in the LTC2263CUJ-12#TRPBF?

In 2-lane mode, the LTC2263CUJ-12#TRPBF outputs two bits per channel per clock cycle (e.g., 50Mbps per lane at 25Msps), reducing timing margin pressure. In 1-lane mode, it outputs one bit per channel per cycle (25Mbps per lane), simplifying routing but requiring tighter setup/hold timing - both modes maintain identical 25Msps sampling fidelity.

What is the purpose of the VCM1 and VCM2 pins on the LTC2263CUJ-12#TRPBF?

VCM1 (Pin 3) and VCM2 (Pin 8) are dedicated common-mode bias outputs, each nominally at VDD/2 (0.9V). They provide low-impedance, matched DC bias for differential analog input drivers - essential for maximizing CMRR (>80dB) and minimizing even-order distortion in the LTC2263CUJ-12#TRPBF's analog front-end.

Can the LTC2263CUJ-12#TRPBF operate with a single-ended encode clock?

Yes, the LTC2263CUJ-12#TRPBF supports single-ended encode clocks by tying ENC– (Pin 14) to GND and driving ENC+ (Pin 13) with a 1.8V square wave. The datasheet specifies VIH = 1.2V and VIL = 0.6V under these conditions, ensuring reliable triggering without differential clock generation circuitry.