Analog Devices Inc. LTC2292CUP#TRPBF

Overview

LTC2292CUP#TRPBF from Analog Devices (formerly Linear Technology) is a dual 12-bit, 40Msps low-power analog-to-digital converter operating from a single 3V supply. It delivers 71.4dB SNR and 90dB SFDR at Nyquist, supports ±0.5V to ±1V differential input ranges, and features 110dB channel isolation at 100MHz - optimized for high-fidelity signal digitization in communications receivers and medical ultrasound front-ends.

For engineers reviewing the LTC2292CUP#TRPBF datasheet, LTC2292CUP#TRPBF pinout, LTC2292CUP#TRPBF application, or LTC2292CUP#TRPBF equivalent, key selection criteria include its 40Msps sample rate, 575MHz full-power bandwidth, clock duty cycle stabilizer, multiplexed/parallel output bus flexibility, and C-grade (0°C to 70°C) temperature rating with QFN-64 packaging.

Technical Context

The LTC2292CUP#TRPBF implements a six-stage CMOS pipelined ADC architecture with integrated sample-and-hold, internal 1.5V reference, and programmable input range via SENSEA/SENSEB pins. Its clock duty cycle stabilizer enables robust performance across wide input duty cycles without external conditioning.

It supports independent or synchronized sampling on two channels, configurable offset binary or 2's complement output formats via MODE pin, and three power states - normal (235mW), nap (15mW per channel), and shutdown (2mW per channel) - all controlled by SHDNA/SHDNB and OEA/OEB pins.

Key Specifications

Pinout & Package

Package: 64-lead (9mm × 9mm) plastic QFN with exposed thermal pad (Pin 65 = 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 ADC applications.

Compared with LTC2292IUP#TRPBF, the LTC2292CUP#TRPBF trades extended temperature capability for lower cost and tighter supply current tolerance; versus AD9233BCPZ-40, it delivers true dual-channel correlation, integrated DCS, and flexible output routing - making it superior for I/Q, beamforming, or time-interleaved architectures.

Availability

LTC2292CUP#TRPBF is available at Aetrix Electronics and suitable for wireless baseband receivers, medical ultrasound front-ends, and portable test equipment requiring stable component supply with guaranteed long-term manufacturability.

Supply support for LTC2292CUP#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, communications, and healthcare markets.

The LTC2292 belongs to ADI's high-speed precision ADC product line, engineered specifically for demanding digitization tasks in communications infrastructure, medical imaging, and instrumentation where SNR, SFDR, and channel matching are design-critical.

FAQ

What is the maximum input frequency supported by the LTC2292CUP#TRPBF before aliasing occurs?

The LTC2292CUP#TRPBF has a 40Msps sample rate, so its Nyquist frequency is 20MHz. However, its full-power bandwidth is 575MHz - meaning it can accept analog inputs up to that frequency without amplitude roll-off, though frequencies above 20MHz will alias into the first Nyquist zone. Anti-alias filtering must be applied externally for band-limited sampling.

Does the LTC2292CUP#TRPBF require an external reference voltage?

No - the LTC2292CUP#TRPBF includes an internal 1.5V reference and supports both internal and external reference configurations. When SENSEA/SENSEB are tied to VCMA/VCMB, it uses the internal reference for ±0.5V input range; tying them to VDD selects ±1V range. External references (0.5V–1V) are also supported for custom scaling.

How does the clock duty cycle stabilizer in the LTC2292CUP#TRPBF improve system performance?

The clock duty cycle stabilizer in the LTC2292CUP#TRPBF reduces aperture jitter caused by non-50% clock duty cycles, directly preserving SNR at full 40Msps operation. Without it, asymmetric clocks would increase timing uncertainty and degrade noise floor - especially critical in undersampling or wideband IF digitization applications.

Can the LTC2292CUP#TRPBF operate with a 1.8V digital output supply (OVDD)?

Yes - the LTC2292CUP#TRPBF supports OVDD from 0.5V to 3.6V. At OVDD = 1.8V, its digital outputs drive 1.79V VOH and 0.09V VOL under load, ensuring compatibility with 1.8V FPGA or ASIC interfaces while reducing switching noise and power consumption in the digital domain.

What is the pipeline latency of the LTC2292CUP#TRPBF, and how does it affect system timing?

The LTC2292CUP#TRPBF has a fixed 5-cycle pipeline latency from CLK edge to valid output data. This means the digitized result of sample N appears on DA0–DA11 or DB0–DB11 five clock cycles later. System firmware and FPGA logic must account for this deterministic delay in time-critical feedback loops or real-time processing pipelines.