Analog Devices Inc. LTC2283IUP#PBF

Overview

LTC2283IUP#PBF from Analog Devices (formerly Linear Technology) is a dual 12-bit, 125Msps low-power analog-to-digital converter operating from a single 3V supply. It delivers 70.2dB SNR and 88dB SFDR at 5MHz input, with 640MHz full-power bandwidth and 110dB channel isolation at 100MHz - optimized for high-fidelity spectral analysis and broadband communications front-ends.

For engineers reviewing the LTC2283IUP#PBF datasheet, LTC2283IUP#PBF pinout, LTC2283IUP#PBF application, or LTC2283IUP#PBF equivalent, key selection criteria include dual-channel synchronization capability, flexible 1VP-P to 2VP-P differential input range, clock duty cycle stabilization, and QFN-64 package compatibility with high-density RF layout requirements.

Technical Context

The LTC2283IUP#PBF implements a six-stage CMOS pipelined ADC architecture per channel, achieving 5-cycle pipeline latency with simultaneous sampling on two independent analog inputs (AINA±, AINB±). Its internal 1.5V reference and SENSE-pin programmable input range (±0.5V to ±1V) enable precise DC-coupled signal acquisition without external reference components.

It supports dual independent clock inputs (CLKA/CLKB) or synchronized operation via CLKOUT feedback, with MODE pin-selectable offset binary or 2's complement output format and integrated clock duty cycle stabilizer - critical for maintaining AC performance across variable clock sources in wireless infrastructure and test equipment.

Key Specifications

Pinout & Package

Package: 64-lead (9mm × 9mm) plastic QFN with exposed pad (Pin 65 = GND), rated for –40°C to +85°C industrial temperature range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9233BCPZ-125 and LTC2285IUP#PBF, the LTC2283IUP#PBF uniquely balances dual-channel integration, 70.2dB SNR, and 790mW power in a single QFN-64 package - making it optimal for space-constrained, phase-coherent, battery-aware instrumentation where 12-bit resolution suffices.

Availability

LTC2283IUP#PBF is available at Aetrix Electronics and suitable for wireless infrastructure, portable medical imaging, spectral analysis, and test equipment requiring stable component supply across extended industrial temperature ranges.

Supply support for LTC2283IUP#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2283IUP#PBF belongs to Linear Technology's high-speed ADC product line, designed specifically for demanding communications and instrumentation applications requiring dual-channel synchronization, low power, and exceptional AC performance at 125Msps.

FAQ

What is the operating temperature range for the LTC2283IUP#PBF?

The LTC2283IUP#PBF is specified for industrial operation from –40°C to +85°C, as indicated by the "I" grade in its part number. This rating is validated across all key AC and DC specifications including SNR, SFDR, INL, and DNL - ensuring consistent performance in outdoor base stations, field-deployable test gear, and industrial control systems where ambient temperatures fluctuate widely. The device uses the same 64-lead QFN package as the commercial-grade LTC2283CUP#PBF but undergoes extended temperature screening.

Does the LTC2283IUP#PBF support single-ended analog input?

Yes, the LTC2283IUP#PBF supports single-ended analog input: drive AIN+ with the signal and tie AIN– to 1.5V (VCMA or VCMB). However, this degrades harmonic distortion and INL while preserving SNR and DNL. For optimal performance - especially SFDR above 80dB - differential drive with matched 100Ω source impedance per input is strongly recommended. The datasheet confirms single-ended operation is viable for cost-sensitive applications where modest THD degradation is acceptable.

How does the MODE pin affect output formatting and clock functionality in the LTC2283IUP#PBF?

The MODE pin on the LTC2283IUP#PBF controls both output data format and clock duty cycle stabilizer activation. Ground selects offset binary with stabilizer off; 1V (≈1/3 VDD) selects offset binary with stabilizer on; 2V (≈2/3 VDD) selects 2's complement with stabilizer on; and VDD selects 2's complement with stabilizer off. This dual-function pin simplifies PCB layout by eliminating separate control lines, and the stabilizer improves jitter tolerance when using asymmetric clocks common in FPGA-generated timing domains.

Can the LTC2283IUP#PBF operate with different OVDD voltages for interfacing with various logic families?

Yes, the LTC2283IUP#PBF supports OVDD from 0.5V to 3.6V, enabling direct interface with 1.8V, 2.5V, and 3.3V logic families without level shifters. Output drivers maintain valid VOH/VOL levels across this range - e.g., VOH ≥ 1.79V at OVDD = 1.8V with 200μA sink, and VOL ≤ 0.09V under same conditions. This flexibility simplifies integration with modern FPGAs and ASICs that use mixed-voltage I/O banks, reducing BOM count and signal integrity risk.

What power-saving modes does the LTC2283IUP#PBF provide, and how are they controlled?

The LTC2283IUP#PBF offers per-channel shutdown and nap modes controlled by SHDNA/SHDNB and OEA/OEB pins. Shutdown (SHDN=VDD, OE=GND) draws 2mW per channel; nap mode (SHDN=VDD, OE=GND) draws 15mW per channel while retaining register state. Both modes retain analog bias points for fast wake-up (<1μs). These states are independently configurable per channel - allowing one ADC to remain active for monitoring while the other sleeps - ideal for battery-powered spectrum analyzers and portable ultrasound systems needing adaptive power management.