Analog Devices Inc. LTC2242CUP-12#PBF

Overview

LTC2242CUP-12#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, 250Msps pipelined analog-to-digital converter optimized for high-frequency communication signal digitization. It delivers 65.4dB SNR, 78dB SFDR at 10MHz input, 95fsRMS aperture jitter, ±1.0LSB INL (typ), and operates from a single 2.5V supply - enabling IF undersampling in wireless base stations and cable head-end systems.

For engineers reviewing the LTC2242CUP-12#PBF datasheet, LTC2242CUP-12#PBF pinout, LTC2242CUP-12#PBF application, or LTC2242CUP-12#PBF equivalent, key selection criteria include full-power bandwidth (1.2GHz), LVDS/CMOS output flexibility, selectable ±0.5V/±1V input range, clock duty cycle stabilization, and shutdown/nap power modes for system-level power management.

Technical Context

The LTC2242CUP-12#PBF implements a five-stage CMOS pipelined ADC architecture with internal correction logic and differential sample-and-hold. Its 1.2GHz full-power bandwidth supports wideband RF/IF sampling, while ultralow 95fsRMS jitter enables high-fidelity undersampling of signals up to 1GHz without external clock conditioning.

Dual reference paths (REFHA/REFHB/REFLA/REFLB) support flexible external or internal reference configurations, and the SENSE pin directly programs input range (±0.5V to ±1V). Output mode is selected via LVDS pin voltage level, supporting LVDS, full-rate CMOS, or demultiplexed CMOS (interleaved/simultaneous) formats with configurable output swing (0.5V–2.625V).

Key Specifications

Pinout & Package

Package: 64-lead 9mm × 9mm plastic QFN with exposed thermal pad (Pin 65 = GND, must be soldered to PCB). θJA = 20°C/W, TJMAX = 150°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9230-250EBZ and LTC2262CUH-12#PBF, the LTC2242CUP-12#PBF uniquely balances 250Msps speed, 78dB SFDR, single 2.5V supply, and on-chip input range control - making it optimal for compact, thermally constrained communications infrastructure where design simplicity and jitter performance are prioritized over absolute SFDR ceiling.

Availability

LTC2242CUP-12#PBF is available at Aetrix Electronics and suitable for wireless infrastructure, cable access equipment, and RF test instrumentation requiring stable component supply across extended temperature ranges (0°C to 70°C).

Supply support for LTC2242CUP-12#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and RF ICs for precision and high-speed applications.

The LTC2242CUP-12#PBF belongs to Linear Technology's high-speed ADC product line, engineered specifically for demanding communications systems where wide bandwidth, low jitter, and flexible digital interfacing are essential for modern radio architectures.

FAQ

What is the operating temperature range for the LTC2242CUP-12#PBF?

The LTC2242CUP-12#PBF is rated for 0°C to 70°C ambient operation (Commercial grade). This is confirmed by the "C" suffix in the part number and the order information table specifying LTC2242C-12 temperature range. The device uses internal thermal protection and is qualified per JEDEC standards for this grade.

Does the LTC2242CUP-12#PBF support both LVDS and CMOS digital outputs?

Yes, the LTC2242CUP-12#PBF supports LVDS, full-rate CMOS, and demultiplexed CMOS outputs. Output mode is selected by applying specific voltage levels to the LVDS pin (0V, 1/3VDD, 2/3VDD, or VDD). LVDS mode uses differential 100Ω termination; CMOS modes allow output swing adjustment from 0.5V to 2.625V via OVDD.

How is the input voltage range configured on the LTC2242CUP-12#PBF?

The LTC2242CUP-12#PBF input range is set via the SENSE pin: connecting SENSE to VCM selects ±0.5V, to VDD selects ±1V, or to an external 0.5–1V reference selects ±VSENSE. This direct pin-based configuration eliminates external resistors or DACs required by competing ADCs.

What power-saving modes does the LTC2242CUP-12#PBF offer?

The LTC2242CUP-12#PBF provides two low-power states: Nap mode (28mW, SHDN=HIGH, OE=LOW) retains bias settings and enables fast wake-up; Sleep mode (1mW, SHDN=HIGH, OE=HIGH) shuts down all circuitry except basic logic. Both modes maintain pin compatibility and require no reconfiguration on exit.

Is the LTC2242CUP-12#PBF pin-compatible with other members of the LTC224x family?

Yes, the LTC2242CUP-12#PBF is pin-compatible with the entire LTC224x family including LTC2242-10, LTC2241-12, and LTC2240-12. All share identical 64-pin 9mm × 9mm QFN packaging, pin functions, and footprint - enabling drop-in resolution or speed upgrades without PCB redesign.