Analog Devices Inc. LTC2286CUP#PBF

Overview

LTC2286CUP#PBF from Analog Devices (formerly Linear Technology) is a dual 10-bit, 25Msps low-noise analog-to-digital converter operating from a single 3V supply. It delivers 61.8dB SNR and 85dB SFDR at Nyquist, with 110dB channel isolation at 100MHz and 575MHz full-power bandwidth. Designed for high-fidelity digitization in portable instrumentation and spectral analysis systems.

For engineers reviewing the LTC2286CUP#PBF datasheet, LTC2286CUP#PBF pinout, LTC2286CUP#PBF application, or LTC2286CUP#PBF equivalent, key selection criteria include its 25Msps sample rate, dual-channel 10-bit resolution, ±0.1LSB typical INL, flexible 1VP-P to 2VP-P input range, and QFN-64 package with exposed thermal pad.

Technical Context

The LTC2286CUP#PBF implements a six-stage CMOS pipelined ADC architecture with independent sample-and-hold circuits per channel. It supports both multiplexed and separate digital output buses via the MUX pin and includes a clock duty cycle stabilizer enabled by MODE pin configuration.

Each channel features programmable input range (±0.5V to ±1V) via SENSEA/SENSEB pins, internal 1.5V common-mode bias (VCMA/VCMB), and independent shutdown (SHDNA/SHDNB) and output enable (OEA/OEB) controls. The device operates across 0°C to 70°C (C-grade) with guaranteed DC specs including ±0.6LSB INL and ±0.5LSB DNL over temperature.

Key Specifications

Pinout & Package

Package: 64-lead (9mm × 9mm) plastic QFN with exposed GND pad (Pin 65) requiring PCB soldering for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9236BCPZ-20 and LTC2287CUP#PBF, the LTC2286CUP#PBF uniquely balances dual-channel integration, 25Msps throughput, and 150mW power in a single QFN-64 package-enabling compact, low-power, synchronized acquisition where channel matching and board space are critical.

Availability

LTC2286CUP#PBF is available at Aetrix Electronics and suitable for portable instrumentation, spectral analysis, medical ultrasound, and industrial data acquisition requiring stable component supply and long-term production continuity.

Supply support for LTC2286CUP#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2286CUP#PBF belongs to ADI's high-speed precision ADC product line, engineered for applications demanding wide dynamic range, low distortion, and dual-channel synchronization in space- and power-constrained environments.

FAQ

What is the operating temperature range for the LTC2286CUP#PBF?

The LTC2286CUP#PBF is rated for commercial temperature operation from 0°C to 70°C. This C-grade specification ensures stable performance in office, laboratory, and controlled-environment portable equipment where ambient temperatures remain within this range. The device's guaranteed DC accuracy-including ±0.6LSB INL and ±0.5LSB DNL-is maintained across the full 0°C to 70°C span, making it suitable for unheated field-deployable instruments.

Does the LTC2286CUP#PBF support differential or single-ended analog inputs?

The LTC2286CUP#PBF supports both differential and single-ended analog inputs. Its AINA+/AINA– and AINB+/AINB– pins are designed for true differential operation, delivering optimal AC performance (61.8dB SNR, >80dB CMRR). Single-ended drive is possible but degrades harmonic distortion; the datasheet confirms differential input is required to achieve specified SFDR and crosstalk performance. Input common-mode voltage must be set via SENSEA/SENSEB to match the selected range (±0.5V or ±1V).

How does the MODE pin configure output format and clock stabilization on the LTC2286CUP#PBF?

The MODE pin on the LTC2286CUP#PBF selects both output data format and clock duty cycle stabilizer state. Ground sets offset binary format with stabilizer off; 1/3 VDD enables offset binary with stabilizer on; 2/3 VDD selects 2's complement with stabilizer on; VDD configures 2's complement with stabilizer off. This dual-function control applies identically to both channels, ensuring consistent timing and data interpretation across the dual ADC core-critical for coherent I/Q sampling and FPGA interface alignment.

Can the LTC2286CUP#PBF share a single digital output bus between both channels?

Yes, the LTC2286CUP#PBF supports multiplexed output via the MUX pin. When MUX = Low, Channel A data appears on DB0–DB9 and Channel B on DA0–DA9; when MUX = High, the mapping reverses. To merge both channels onto one 10-bit bus, tie MUX, CLKA, and CLKB together-this synchronizes sampling and alternates output data per clock cycle. The OFA/OFB overflow flags remain active per channel, enabling real-time saturation detection even in multiplexed mode.

What thermal management is required for the LTC2286CUP#PBF in continuous operation?

The LTC2286CUP#PBF requires soldering of its exposed thermal pad (Pin 65) to a solid PCB ground plane to maintain junction temperature within limits. With θJA = 20°C/W and 150mW dissipation at 25Msps, proper thermal design keeps TJ ≤ 85°C at 70°C ambient. Use ≥4 thermal vias under the pad connected to inner-layer ground planes; avoid floating copper islands. The datasheet mandates this connection-not optional-for reliability and sustained AC performance, especially during extended spectral analysis or waveform capture sessions.