Analog Devices Inc. LTC2288CUP#TRPBF

Overview

LTC2288CUP#TRPBF from Analog Devices (formerly Linear Technology) is a dual 10-bit, 65Msps 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 supports flexible differential or single-ended analog inputs up to 2V_P-P. It is designed for high-fidelity digitization in broadband communications and imaging systems.

For engineers reviewing the LTC2288CUP#TRPBF datasheet, LTC2288CUP#TRPBF pinout, LTC2288CUP#TRPBF application, or LTC2288CUP#TRPBF equivalent, key selection criteria include its 65Msps sample rate, dual-channel 10-bit resolution, integrated clock duty cycle stabilizer, multiplexed or separate digital output bus, and 64-pin QFN package with exposed thermal pad.

Technical Context

The LTC2288CUP#TRPBF implements a six-stage CMOS pipelined ADC architecture per channel, achieving 5-cycle pipeline latency. Its sample-and-hold front-end provides 575MHz full-power bandwidth and 0.2ps RMS aperture jitter, enabling accurate sampling of wideband RF and IF signals.

It features independent shutdown and nap modes per channel, configurable output format (offset binary or 2's complement), and programmable input range via SENSEA/SENSEB pins. The internal 1.5V reference buffer (VCM) and external reference support allow ±0.5V to ±1V differential input ranges without external components.

Key Specifications

Pinout & Package

Package: 64-lead (9mm × 9mm) plastic QFN with exposed GND pad (Pin 65), rated for 0°C to 70°C operation (C-grade).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2289CUH#PBF and AD9233BCPZ-65, the LTC2288CUP#TRPBF uniquely balances 65Msps speed, 61.8dB SNR, ultra-low crosstalk, and per-channel power control - making it optimal for portable, dual-path, and thermally constrained wideband digitization tasks.

Availability

LTC2288CUP#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, spectral analysis, and defense electronics requiring stable component supply across extended production cycles.

Supply support for LTC2288CUP#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 LTC2288CUP#TRPBF belongs to ADI's high-speed precision ADC product line, engineered specifically for demanding wideband digitization in communications receivers, imaging systems, and instrumentation where low noise, high isolation, and flexible power management are critical.

FAQ

What is the operating temperature range for the LTC2288CUP#TRPBF?

The LTC2288CUP#TRPBF is specified for commercial-grade operation from 0°C to 70°C ambient temperature. This C-grade variant is intended for indoor, non-automotive, and non-military applications where environmental stress is moderate. Its thermal design - including the exposed GND pad (Pin 65) - ensures reliable operation within this range at full 65Msps sample rate and 400mW dissipation.

Does the LTC2288CUP#TRPBF support single-ended analog inputs?

Yes, the LTC2288CUP#TRPBF supports single-ended analog inputs, though differential drive is recommended for optimal AC performance. When driven single-ended, SNR degrades by ~1–2dB due to increased even-order harmonic distortion. Input common-mode voltage must be set to 0.5V–2.0V via SENSEA/SENSEB pins, and the unused input pin (e.g., AIN– for AIN+ drive) must be DC-biased to the same common-mode level using a low-impedance source.

How does the clock duty cycle stabilizer in the LTC2288CUP#TRPBF improve system design?

The clock duty cycle stabilizer in the LTC2288CUP#TRPBF allows full 65Msps performance with input clock duty cycles from 40% to 60%, eliminating the need for external duty cycle correction circuits like delay-locked loops (DLLs) or dedicated clock conditioners. This simplifies clock tree design, reduces BOM cost, and improves timing margin in systems using crystal oscillators or PLLs with variable duty cycle output.

Can the LTC2288CUP#TRPBF operate with different supply voltages for analog and digital output sections?

Yes, the LTC2288CUP#TRPBF uses separate supplies: VDD (2.7V–3.4V) powers the analog core and reference circuitry, while OVDD (0.5V–3.6V) independently powers the digital output drivers. This allows interfacing directly with 1.8V, 2.5V, or 3.3V FPGA or ASIC I/O banks without level shifters, while maintaining optimal analog performance through clean, regulated VDD.

What is the significance of the 110dB channel isolation specification for the LTC2288CUP#TRPBF?

The 110dB channel isolation at 100MHz means that a full-scale signal applied to Channel A produces less than –110dBFS crosstalk in Channel B's output - effectively 10µV of coupled noise into a 1V_P-P system. This enables true simultaneous sampling in dual-path architectures (e.g., I/Q demodulation, MIMO, or differential noise cancellation) without calibration-induced errors or degraded ENOB from inter-channel coupling.