Analog Devices Inc. LTC2192IUKG#PBF

Overview

LTC2192IUKG#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-frequency signal digitization in communications infrastructure. It delivers 77dB SNR and 90dB SFDR at 65Msps with ultralow 0.07ps_RMS aperture jitter, operates from a single 1.8V supply, and features serial LVDS outputs with 1/2/4-bit per channel configuration - enabling direct interface to FPGAs in cellular base stations and software-defined radios.

For engineers reviewing the LTC2192IUKG#PBF datasheet, LTC2192IUKG#PBF pinout, LTC2192IUKG#PBF application, or LTC2192IUKG#PBF equivalent, key selection criteria include guaranteed ±2LSB INL over –40°C to +85°C, 550MHz full-power bandwidth, configurable input range (1–2V_P-P), and support for differential or single-ended encode inputs - all in a thermally enhanced 52-pin QFN package.

Technical Context

The LTC2192IUKG#PBF integrates two independent 16-bit ADC cores with shared clocking and reference circuitry, enabling true simultaneous sampling critical for I/Q demodulation and phase-coherent multi-channel acquisition. Its on-chip duty cycle stabilizer maintains performance across wide encode clock duty cycles, while the internal PLL ensures clean timing for high-speed LVDS serialization.

Signal integrity is preserved via programmable LVDS output current (1.75mA or 3.5mA), optional internal 100Ω termination, and separate analog/digital/IO power domains (VDD/OVDD). The device supports three serialization modes (1/2/4-lane) to balance data rate, PCB routing complexity, and power - with pipeline latency fixed at 7 clock cycles regardless of mode.

Key Specifications

Pinout & Package

Package: 52-lead (7mm × 8mm) plastic QFN with exposed thermal pad (Pin 53 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9233BCPZ-65 and LTC2262IUH#PBF, the LTC2192IUKG#PBF uniquely combines true simultaneous dual-channel 16-bit conversion, embedded LVDS serialization, ultralow jitter, and industrial temperature rating in a single 52-pin QFN - reducing system-level complexity and enabling higher integration density.

Availability

LTC2192IUKG#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2192IUKG#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 technologies, serving communications, industrial, automotive, and healthcare markets.

The LTC2192IUKG#PBF belongs to ADI's high-speed data converter product line, engineered specifically for demanding RF/IF digitization where phase coherence, dynamic range, and power efficiency are critical - such as 5G infrastructure and portable diagnostic equipment.

FAQ

What is the maximum sampling rate supported by the LTC2192IUKG#PBF?

The LTC2192IUKG#PBF supports a maximum sampling rate of 65Msps, as specified in its speed grade designation. This rate is achievable in all serialization modes (1/2/4-lane) provided the serial data rate does not exceed 1000Mbps - meaning tSER must be ≥1ns. At 65Msps, the device maintains 77dB SNR and 90dB SFDR with 0.07ps_RMS aperture jitter, making it suitable for undersampling applications up to 550MHz.

Does the LTC2192IUKG#PBF require an external reference voltage?

No, the LTC2192IUKG#PBF includes an internal reference with nominal 1.25V output (VREF pin) and supports three input range configurations via the SENSE pin: ±1V (SENSE = VDD), ±0.5V (SENSE = GND), or ±0.8·V_SENSE (external 0.625–1.3V applied to SENSE). External references are optional and used only when higher accuracy or custom range is required - the internal reference guarantees ±1.5% gain error and ±25ppm/°C drift over temperature.

How does the LTC2192IUKG#PBF handle clock duty cycle variations?

The LTC2192IUKG#PBF incorporates an internal clock duty cycle stabilizer that actively corrects encode clock asymmetry, allowing high-performance operation even with duty cycles ranging from 20% to 80%. This eliminates the need for external duty cycle correction circuits when using crystal oscillators or PLLs with poor duty cycle control - a key advantage in compact SDR and test equipment designs where board space is constrained.

What power-saving modes are available on the LTC2192IUKG#PBF?

The LTC2192IUKG#PBF offers two low-power states: Nap mode (50mW total power) and Sleep mode (1mW total power). Nap mode retains register settings and reference bias while disabling ADC cores and LVDS drivers; Sleep mode powers down nearly all circuitry except basic bias generation. Both modes are controlled via the SPI interface or parallel pins (SDI in PAR/SER = VDD mode), enabling rapid wake-up (<1µs from Nap, ~10µs from Sleep) for burst-mode acquisition in portable instruments.

Can the LTC2192IUKG#PBF interface directly with Xilinx or Intel FPGAs?

Yes, the LTC2192IUKG#PBF interfaces directly with Xilinx and Intel FPGAs via its LVDS outputs (OUT1x±, OUT2x±, DCO±, FR±), which comply with ANSI TIA/EIA-644-A LVDS standards. The 1/2/4-lane serialization modes align with FPGA transceiver lane counts, and the fixed 7-cycle pipeline latency enables deterministic timing closure. Reference designs and IBIS models for common FPGA families are available from Analog Devices' website to accelerate implementation.