Analog Devices Inc. LTC2263CUJ-12#PBF

Overview

LTC2263CUJ-12#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for 25Msps operation in low-power communications and instrumentation systems. It delivers 70.5dB SNR and 90dB SFDR at 70MHz input, features ultralow 0.15psRMS jitter, ±0.3LSB INL (typ), and serial LVDS outputs in 1- or 2-lane mode - enabling high-fidelity undersampling in portable medical imaging and multichannel data acquisition.

For engineers reviewing the LTC2263CUJ-12#PBF datasheet, LTC2263CUJ-12#PBF pinout, LTC2263CUJ-12#PBF application, or LTC2263CUJ-12#PBF equivalent, this page provides verified specifications, QFN-40 package layout, SPI-configurable LVDS serialization, power modes (Nap/Shutdown), and real-world use cases aligned to its 25Msps speed grade and 0°C to 70°C industrial temperature range.

Technical Context

The LTC2263CUJ-12#PBF implements a dual 12-bit pipeline ADC architecture with independent sample-and-hold circuits per channel, supporting true simultaneous sampling for phase-coherent signal capture. Its internal clock duty cycle stabilizer enables full-speed performance across wide input clock duty cycles (2%–98%), and the 800MHz full-power bandwidth supports IF sampling up to 140MHz.

Digital interface logic operates from a single 1.8V supply (VDD/OVDD), with configurable LVDS output current (1.75mA or 3.5mA per lane), on-chip 100Ω termination, and selectable 1VP-P to 2VP-P input range via SENSE pin voltage. The SPI port allows runtime configuration of serialization mode, power states, and reference selection without external components.

Key Specifications

Pinout & Package

Package: 40-lead (6mm × 6mm) plastic QFN (UJ), exposed pad (Pin 41) soldered to PCB ground for thermal and electrical integrity. Pin pitch: 0.5mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9233BCPZ-25, the LTC2263CUJ-12#PBF integrates dual-channel sampling and clock conditioning in one QFN-40 package, reducing BOM count and inter-channel skew; versus LTC2264CUJ-12#PBF, it trades 15Msps speed for 18mW lower power - ideal for thermally constrained portable instruments.

Availability

LTC2263CUJ-12#PBF is available at Aetrix Electronics and suitable for portable medical imaging, cellular infrastructure monitoring, and multichannel data acquisition requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.

Supply support for LTC2263CUJ-12#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies.

The LTC226x family was designed specifically for demanding communications and instrumentation applications requiring simultaneous dual-channel sampling, low power, and high AC performance at intermediate sample rates - bridging the gap between high-speed and ultra-low-power ADCs.

FAQ

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

The LTC2263CUJ-12#PBF is rated for a maximum sampling frequency of 25Msps, as confirmed in the "TIMING CHARACTERISTICS" table under fS parameter for LTC2263-12. This speed grade is fixed per device variant and cannot be increased via configuration. Exceeding 25Msps may cause non-monotonic behavior or missing codes.

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

Yes, the LTC2263CUJ-12#PBF supports external reference via the SENSE pin: applying 0.625V–1.3V to SENSE selects an external reference mode, enabling custom full-scale ranges and improved system-level accuracy. Internal reference (±0.5V or ±1V) is selected by tying SENSE to GND or VDD respectively.

How does the Nap mode reduce power consumption in the LTC2263CUJ-12#PBF?

The Nap mode reduces LTC2263CUJ-12#PBF power to 60mW by disabling the ADC core's sample-and-hold and conversion circuitry while retaining register state and LVDS driver readiness - allowing wake-up in <1µs. It is distinct from Shutdown mode (1mW), which powers down all circuitry except the SPI interface.

Can the LTC2263CUJ-12#PBF be used with single-ended encode clock inputs?

Yes, the LTC2263CUJ-12#PBF supports single-ended encode clock operation: tie ENC– to GND and drive ENC+ with TTL, CMOS, or 1.8V square wave. Input thresholds are specified at VIH = 1.2V and VIL = 0.6V (VDD = 1.8V), and the internal duty cycle stabilizer remains active to maintain timing accuracy.

What is the purpose of the DCO and FR differential outputs on the LTC2263CUJ-12#PBF?

The DCO (Data Clock Output) provides a source-synchronous LVDS clock aligned to serialized data edges, ensuring reliable capture in FPGA IDELAY/ISERDES blocks. The FR (Frame) output toggles once per sample frame - in 2-lane mode, its period equals two encode cycles - enabling firmware to identify sample boundaries without parsing data streams.