Analog Devices Inc. LTC2141CUP-12#TRPBF

Overview

LTC2141CUP-12#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 40Msps dual-channel simultaneous-sampling analog-to-digital converter optimized for high-dynamic-range signal digitization in communications infrastructure. It delivers 70.5dB SNR, 89dB SFDR, and ultralow 0.10psRMS jitter at 70MHz input, operating from a single 1.8V supply with CMOS/DDR CMOS/DDR LVDS output options. It is deployed in cellular base stations and portable medical imaging systems requiring precise dual-channel phase coherence.

For engineers reviewing the LTC2141CUP-12#TRPBF datasheet, LTC2141CUP-12#TRPBF pinout, LTC2141CUP-12#TRPBF application, or LTC2141CUP-12#TRPBF equivalent, key selection considerations include its 40Msps sampling rate, 750MHz full-power bandwidth, ±0.3LSB INL, 0°C to 70°C temperature grade, and 64-pin QFN package with configurable digital outputs.

Technical Context

The LTC2141CUP-12#TRPBF implements a dual 12-bit pipeline ADC architecture with independent sample-and-hold circuits per channel, enabling true simultaneous sampling critical for I/Q demodulation and beamforming. Its internal reference supports 1.25V ±25ppm/°C stability, and the ENC+/ENC– differential clock interface accepts PECL/LVDS/TTL inputs with optional duty cycle stabilization.

Digital output flexibility includes full-rate CMOS (1.2–1.8V swing), DDR CMOS, or DDR LVDS modes-each selectable via PAR/SER pin configuration. The SPI serial port enables real-time register control of features including data randomizer, nap/sleep modes (10mW/1mW), and input range selection (1–2VP-P).

Key Specifications

Pinout & Package

64-pin (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering exposed pad to PCB ground plane for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel 12-bit ADC applications.

Compared with ADS52J90IRGCT and AD9238BSTZ-40, the LTC2141CUP-12#TRPBF offers superior jitter performance (0.10psRMS vs 0.15–0.25psRMS) and lowest power (68mW vs 105–320mW) at 40Msps, making it optimal for portable, battery-sensitive, and phase-coherent applications where CMOS/DDR LVDS flexibility is valuable.

Availability

LTC2141CUP-12#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, portable medical imaging, software-defined radio, and multi-channel data acquisition requiring stable component supply across production lifecycles.

Supply support for LTC2141CUP-12#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2141CUP-12#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications and instrumentation applications requiring simultaneous sampling, low jitter, and flexible digital interfacing.

FAQ

What is the maximum analog input frequency supported by the LTC2141CUP-12#TRPBF?

The LTC2141CUP-12#TRPBF features a 750MHz full-power bandwidth, enabling accurate digitization of analog inputs up to 750MHz under full-scale conditions. This supports undersampling architectures for IF frequencies in cellular and radar applications, eliminating the need for complex anti-alias filtering before the ADC input stage.

Does the LTC2141CUP-12#TRPBF require an external reference voltage?

No, the LTC2141CUP-12#TRPBF includes an internal 1.25V reference with ±25ppm/°C temperature drift and 7Ω output impedance. External reference is optional via the SENSE pin (Pin 63) for applications requiring tighter voltage tolerance or custom reference sources.

How does the LTC2141CUP-12#TRPBF achieve simultaneous sampling across both channels?

The LTC2141CUP-12#TRPBF integrates two independent sample-and-hold circuits and ADC cores sharing a common clock domain. Its architecture guarantees sub-100fs inter-channel sampling skew, verified by matched propagation delays and factory-trimmed timing paths - critical for phase-coherent I/Q demodulation and beamforming.

What digital output interfaces does the LTC2141CUP-12#TRPBF support?

The LTC2141CUP-12#TRPBF supports three output modes: full-rate CMOS (1.2–1.8V swing), double-data-rate CMOS, and double-data-rate LVDS. Mode selection is controlled by the PAR/SER pin (Pin 11) and register settings, allowing seamless integration with FPGA I/O standards or ASIC SerDes blocks.

What is the operating temperature range for the LTC2141CUP-12#TRPBF?

The LTC2141CUP-12#TRPBF is specified for 0°C to 70°C ambient operation (C-grade), as indicated by the "C" in the part number. This makes it suitable for commercial and industrial indoor applications such as base station radios, portable diagnostic equipment, and test instrumentation where extended temperature range is not required.