Analog Devices Inc. LTC2288IUP#TRPBF

Overview

LTC2288IUP#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 575MHz full-power bandwidth. Designed for high-fidelity digitization in broadband communications and imaging systems.

For engineers reviewing the LTC2288IUP#TRPBF datasheet, LTC2288IUP#TRPBF pinout, LTC2288IUP#TRPBF application, or LTC2288IUP#TRPBF equivalent, key selection criteria include dual-channel timing alignment, clock duty cycle stabilization support, flexible 1VP-P to 2VP-P input range, and multiplexed/parallel digital output bus configuration.

Technical Context

The LTC2288IUP#TRPBF implements a six-stage CMOS pipelined ADC architecture per channel, achieving 5-cycle pipeline latency. It supports independent or synchronized sampling via separate CLKA/CLKB inputs and includes an integrated clock duty cycle stabilizer to maintain performance across wide input duty cycles.

Each channel features programmable ±0.5V to ±1V differential input range via SENSEA/SENSEB pins, internal 1.5V common-mode bias (VCMA/VCMB), and offset binary or 2's complement output format selectable by MODE pin. Output drivers operate from a separate OVDD supply (0.5V–3.6V) for logic-level flexibility.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2287IUP#TRPBF, the LTC2288IUP#TRPBF provides 25Msps higher throughput and 165mW higher power draw; compared with AD9233BCPZ-65, it offers integrated dual-channel synchronization and reduced component count at the cost of 2-bit resolution reduction.

Availability

LTC2288IUP#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, spectral analysis, and portable instrumentation requiring stable component supply across industrial temperature ranges.

Supply support for LTC2288IUP#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 aerospace, industrial, automotive, and communications markets.

The LTC2288IUP#TRPBF belongs to ADI's high-speed precision ADC product line, engineered for demanding digitization tasks where dynamic range, channel matching, and low power coexist in compact form factors.

FAQ

What is the maximum sampling rate supported by the LTC2288IUP#TRPBF?

The LTC2288IUP#TRPBF supports a maximum sampling rate of 65Msps per channel. This rate is specified under recommended operating conditions: VDD = 3V, differential 2VP-P input, and TA = 25°C. At this rate, the device achieves 61.8dB SNR and 85dB SFDR for 5MHz input signals. The LTC2288IUP#TRPBF maintains full AC performance across its –40°C to +85°C industrial temperature range.

Does the LTC2288IUP#TRPBF require external reference components?

No, the LTC2288IUP#TRPBF integrates an internal 1.5V reference and supports both internal and external reference configurations. When SENSEA/SENSEB are tied to VCMA/VCMB, the device uses the internal reference for ±0.5V input range; tying them to VDD selects ±1V range. External references can be applied directly to REFLA/REFHA and REFLB/REFHB pins, but bypass capacitors (0.1µF + 2.2µF ceramic) must be placed per datasheet layout guidelines. The LTC2288IUP#TRPBF does not require external reference ICs for standard operation.

How does the clock duty cycle stabilizer function in the LTC2288IUP#TRPBF?

The clock duty cycle stabilizer in the LTC2288IUP#TRPBF is enabled when the MODE pin is set to 1/3 VDD or 2/3 VDD. It internally adjusts the clock waveform to achieve near-50% duty cycle regardless of input clock asymmetry, ensuring consistent aperture timing and minimizing jitter-induced SNR degradation. This feature allows direct connection to FPGA clock outputs or crystal oscillators with poor duty cycle control. The stabilizer operates transparently without adding latency or requiring configuration registers - it is purely analog circuitry within the LTC2288IUP#TRPBF.

Can the LTC2288IUP#TRPBF operate with a 1.8V OVDD supply?

Yes, the LTC2288IUP#TRPBF supports OVDD from 0.5V to 3.6V, including 1.8V. At OVDD = 1.8V, the output drivers deliver VOH ≥ 1.79V and VOL ≤ 0.09V while sinking or sourcing up to 1.6mA per pin. This allows direct interfacing with 1.8V FPGA I/O banks without level shifters. Power consumption scales with OVDD: IOVDD is ~6mA at 65Msps with 1.8V OVDD, making it suitable for low-voltage portable designs. All digital timing parameters remain valid across the full OVDD range.

What is the purpose of the MUX pin on the LTC2288IUP#TRPBF?

The MUX pin on the LTC2288IUP#TRPBF controls data bus routing between the two ADC channels. When MUX = HIGH, Channel A outputs appear on DA0–DA9/OFA and Channel B on DB0–DB9/OFB. When MUX = LOW, the outputs are swapped. Connecting MUX, CLKA, and CLKB together enables true multiplexing - both channels share one 10-bit bus with alternating samples. This reduces FPGA pin count by 10 versus parallel mode and is commonly used in cost-sensitive or pin-constrained applications like portable test equipment. The LTC2288IUP#TRPBF maintains full timing specification compliance in both configurations.