Analog Devices Inc. LTC2295CUP#PBF

Overview

LTC2295CUP#PBF from Analog Devices (formerly Linear Technology) is a dual 14-bit, 10Msps low-power analog-to-digital converter operating from a single 3V supply. It delivers 74.4dB SNR and 90dB SFDR at 5MHz input, with 110dB channel isolation and 575MHz full-power bandwidth. Designed for high-fidelity signal digitization in imaging and broadband communications systems.

For engineers reviewing the LTC2295CUP#PBF datasheet, LTC2295CUP#PBF pinout, LTC2295CUP#PBF application, or LTC2295CUP#PBF equivalent, key selection criteria include dual-channel 14-bit resolution at 10Msps, ±1.2LSB INL (typ), flexible 1VP-P to 2VP-P input range, clock duty cycle stabilization, and multiplexed/parallel digital output bus support.

Technical Context

The LTC2295CUP#PBF implements a six-stage CMOS pipelined ADC architecture per channel, achieving 5-cycle pipeline latency. Each stage includes quantization, residue generation, and interstage amplification with digital correction logic synchronizing outputs before buffering.

It supports differential or single-ended analog inputs with programmable input range (±0.5V to ±1V) via SENSEA/SENSEB pins, and features independent shutdown (SHDNA/SHDNB), output enable (OEA/OEB), and multiplexer control (MUX) for flexible data routing between two 14-bit parallel buses or a shared bus.

Key Specifications

Pinout & Package

64-lead (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering of 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 14-bit ADC applications.

Compared with AD9246BCPZ-10 and LTC2296CUP#PBF, the LTC2295CUP#PBF offers optimal balance of low power (120mW), integrated clock stabilizer, and flexible input range - making it preferred for thermally constrained, cost-sensitive, or layout-constrained dual-channel digitization where 10Msps suffices.

Availability

LTC2295CUP#PBF is available at Aetrix Electronics and suitable for ultrasound imaging systems, wireless baseband receivers, and portable spectrum analyzers requiring stable component supply across production lifecycles.

Supply support for LTC2295CUP#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2295CUP#PBF belongs to ADI's high-speed precision ADC product line, engineered for demanding digitization tasks in imaging, instrumentation, and communications where linearity, noise, and channel isolation are critical.

FAQ

What is the operating temperature range for the LTC2295CUP#PBF?

The LTC2295CUP#PBF is rated for 0°C to 70°C ambient operation (Commercial grade). This is indicated by the "C" suffix in the part number and confirmed in the Absolute Maximum Ratings table. The device maintains full specification compliance-including ±1.2LSB INL and 74.4dB SNR-across this range when powered from 2.7V–3.4V and operated at 10Msps with proper thermal management via the exposed pad.

Does the LTC2295CUP#PBF support single-ended analog inputs?

Yes, the LTC2295CUP#PBF supports single-ended analog inputs: drive AIN+ with the signal and tie AIN– to VCM (1.5V) or a quiet reference between 0.5V and 1.5V. However, harmonic distortion and INL degrade relative to differential operation, while SNR and DNL remain unchanged. For best performance-especially SFDR-differential drive with matched ≤100Ω source impedance is strongly recommended.

How does the MODE pin affect the LTC2295CUP#PBF's output format and clock functionality?

The MODE pin configures both output data format and clock duty cycle stabilizer: GND = offset binary + stabilizer off; 1/3 VDD = offset binary + stabilizer on; 2/3 VDD = 2's complement + stabilizer on; VDD = 2's complement + stabilizer off. This single-pin control applies identically to both channels, enabling consistent timing and data handling across dual-channel operation without additional logic.

Can the LTC2295CUP#PBF's two ADC channels be operated independently?

Yes, the LTC2295CUP#PBF supports fully independent channel operation: CLKA and CLKB accept separate clocks, SHDNA/SHDNB and OEA/OEB provide per-channel shutdown and output enable, and SENSEA/SENSEB allow individual input range configuration. This enables asymmetric use cases-for example, Channel A continuously sampling at 10Msps while Channel B operates in nap mode (15mW) until triggered.

What is the purpose of the exposed thermal pad (Pin 65) on the LTC2295CUP#PBF?

The exposed thermal pad (Pin 65) on the LTC2295CUP#PBF is electrically connected to GND and serves dual purposes: thermal dissipation (θJA = 20°C/W) and low-impedance ground return for analog and digital sections. It must be soldered to a PCB copper pour tied to system ground; failure to do so risks thermal overload, degraded SNR, and increased ground bounce in high-speed digital outputs.