Analog Devices Inc. LTC2228IUH#TRPBF

Overview

LTC2228IUH#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 65Msps low-power 3V analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization in imaging and communications systems. It delivers 71.3dB SNR and 90dB SFDR at Nyquist, features ±0.3LSB INL (typ), 575MHz full-power bandwidth, and operates from a single 2.7V–3.4V supply consuming 205mW.

For engineers reviewing the LTC2228IUH#TRPBF datasheet, LTC2228IUH#TRPBF pinout, LTC2228IUH#TRPBF application, or LTC2228IUH#TRPBF equivalent, key selection criteria include its industrial temperature range (–40°C to +85°C), flexible 1VP-P to 2VP-P input range, clock duty cycle stabilizer, and 32-pin 5mm × 5mm QFN package with exposed thermal pad.

Technical Context

The LTC2228IUH#TRPBF implements a six-stage CMOS pipelined ADC architecture with digital correction logic, achieving 5-cycle pipeline latency. Its sample-and-hold circuit supports differential or single-ended analog inputs, with aperture jitter of 0.2psRMS enabling high-fidelity sampling up to 140MHz input frequencies.

It integrates a programmable reference system (via SENSE pin), configurable output format (offset binary or 2's complement via MODE pin), and power management modes - Nap (15mW) and Shutdown (2mW) - controlled by SHDN and OE pins. The separate OVDD supply (0.5V–3.6V) enables direct interfacing with 1.8V, 2.5V, or 3.3V logic families.

Key Specifications

Pinout & Package

The LTC2228IUH#TRPBF is housed in a 32-lead (5mm × 5mm) plastic QFN package with exposed thermal pad (Pin 33), requiring soldering to PCB ground for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9228BSTZ-65 and MAX1127EUB+, the LTC2228IUH#TRPBF offers superior SNR/SFDR, integrated power modes, and flexible reference/input configuration - making it preferred for thermally constrained, high-fidelity instrumentation and communications systems requiring design flexibility.

Availability

LTC2228IUH#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, portable test equipment, and spectral analysis systems requiring stable component supply across extended temperature ranges.

Supply support for LTC2228IUH#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 LTC2228IUH#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding digitization tasks in communications receivers, medical ultrasound, and portable instrumentation where dynamic range, low power, and configurability are essential.

FAQ

What is the operating temperature range for the LTC2228IUH#TRPBF?

The LTC2228IUH#TRPBF is rated for industrial operation from –40°C to +85°C (I-grade), as confirmed by its part number suffix "I" and Absolute Maximum Ratings table. This range is fully specified for all AC and DC parameters including SNR, SFDR, INL, and power consumption - enabling reliable use in outdoor base stations, medical devices, and industrial test equipment without thermal derating.

Does the LTC2228IUH#TRPBF support single-ended analog input?

Yes, the LTC2228IUH#TRPBF supports single-ended analog input per the Applications Information section, though differential drive is recommended for optimal harmonic distortion performance. When driven single-ended, AIN– is tied to VCM (1.5V), and AIN+ accepts a 0–3V signal referenced to that common-mode voltage. Input leakage remains ≤±1μA across temperature, ensuring stable biasing in cost-sensitive designs.

How does the MODE pin configure output format and clock stabilization on the LTC2228IUH#TRPBF?

The MODE pin on the LTC2228IUH#TRPBF selects both output coding and clock duty cycle stabilizer (DCS) state: GND = offset binary + DCS off; 1/3 VDD = offset binary + DCS on; 2/3 VDD = 2's complement + DCS on; VDD = 2's complement + DCS off. This dual-function pin eliminates external logic, allowing runtime reconfiguration of data format and jitter tolerance in FPGA-controlled systems.

What is the purpose of the OF (Over/Under Flow) pin on the LTC2228IUH#TRPBF?

The OF pin on the LTC2228IUH#TRPBF is an active-high, open-drain output that asserts when the analog input exceeds the selected full-scale range - indicating either overrange (positive saturation) or underrange (negative saturation). It is used for real-time AGC feedback, clipping detection, and fault logging; its timing aligns with the corresponding D0–D11 data, enabling cycle-accurate response in closed-loop systems.

Can the LTC2228IUH#TRPBF interface directly with a 1.8V FPGA I/O bank?

Yes, the LTC2228IUH#TRPBF can interface directly with a 1.8V FPGA I/O bank by setting OVDD = 1.8V. Its digital outputs meet VOH ≥1.79V and VOL ≤0.09V at IO = ±1.6mA (per Digital Inputs and Outputs table), satisfying 1.8V LVCMOS input thresholds. The separate OVDD rail isolates output logic from analog supply noise, preserving SNR while enabling mixed-voltage system integration.