Analog Devices Inc. LTC2241CUP-10

Overview

LTC2241CUP-10 from Analog Devices (formerly Linear Technology) is a 10-bit, 210 Msps pipelined analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization in communications infrastructure. It delivers 60.5 dB SNR, 78 dB SFDR at 70 MHz input, and ultralow 95 fs_RMS aperture jitter-enabling high-fidelity IF undersampling in wireless base stations and cable head-end systems.

For engineers reviewing the LTC2241CUP-10 datasheet, LTC2241CUP-10 pinout, LTC2241CUP-10 application, or LTC2241CUP-10 equivalent, key selection criteria include its 1.2 GHz full-power bandwidth, selectable ±0.5 V / ±1 V differential input range, LVDS/CMOS/demux-CMOS output flexibility, and support for clock duty cycle stabilization across wide input duty cycles.

Technical Context

The LTC2241CUP-10 implements a five-stage CMOS pipelined ADC architecture with integrated correction logic and flexible reference programming via the SENSE pin. Its sample-and-hold front-end supports differential analog inputs up to 1.2 GHz full-power bandwidth and achieves <±0.3 LSB INL (typ) and <±0.15 LSB DNL (typ) over temperature.

Digital interface options include LVDS (247–454 mV differential swing), full-rate CMOS (0.5–2.625 V OVDD), or demultiplexed CMOS buses (interleaved or simultaneous update). Clocking accepts differential ENC+/ENC– inputs (PECL/LVDS/TTL/CMOS), with optional duty cycle stabilizer enabled via MODE pin configuration.

Key Specifications

Pinout & Package

64-pin 9 mm × 9 mm plastic QFN package with exposed thermal pad (Pin 65 = GND); RoHS-compliant, lead-free finish (Pb-free plating on #TRPBF variant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9208BCPZ-500 and LTC2261IUP-12#TRPBF, the LTC2241CUP-10 offers optimal balance of 10-bit resolution, 210 Msps speed, and low power (585 mW) in a proven QFN package-making it ideal for space-constrained, thermally sensitive communications infrastructure where parallel LVDS/CPU interfacing is preferred over serial JESD204B.

Availability

LTC2241CUP-10 is available at Aetrix Electronics and suitable for wireless infrastructure, cable access networks, and test equipment requiring stable component supply with guaranteed 0°C to 70°C industrial temperature grade and RoHS-compliant packaging.

Supply support for LTC2241CUP-10 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 LTC2241CUP-10 belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications infrastructure applications requiring wide bandwidth, low jitter, and flexible digital interfacing without sacrificing power efficiency.

FAQ

What is the operating temperature range of the LTC2241CUP-10?

The LTC2241CUP-10 is specified for 0°C to 70°C ambient operation-the "C" grade designation in the part number confirms this commercial temperature range. This differs from the "I" grade (LTC2241IUP-10), which operates from –40°C to 85°C. Thermal design must ensure junction temperature remains below 150°C, aided by soldering the exposed pad (Pin 65) to a thermal plane.

Does the LTC2241CUP-10 support both LVDS and CMOS output modes simultaneously?

No, the LTC2241CUP-10 supports only one output mode at a time, selected by the LVDS pin voltage level. Connecting LVDS to VDD configures LVDS mode; connecting to 0 V selects full-rate CMOS; 1/3 VDD or 2/3 VDD enable demultiplexed CMOS modes. The device does not support concurrent LVDS and CMOS signaling on different pins.

How is the input full-scale range configured on the LTC2241CUP-10?

The LTC2241CUP-10 uses the SENSE pin (Pin 59) to configure input range: connecting SENSE to VCM (1.25 V) selects ±0.5 V differential; connecting to VDD (2.5 V) selects ±1 V differential; applying an external 0.5–1.0 V reference sets ±V_SENSE. This is independent of reference voltage source (internal or external) and verified across temperature.

What is the pipeline latency of the LTC2241CUP-10, and how does it affect system timing?

The LTC2241CUP-10 has a fixed 5-cycle pipeline latency in all output modes (full-rate CMOS, demux-interleaved, demux-simultaneous). This means the digitized result for sample N appears at the output 5 clock cycles after the ENC+ edge that triggered sampling of N. This deterministic latency simplifies timing alignment in DPD and digital receiver loops.

Can the LTC2241CUP-10 operate with a single-ended clock input?

Yes-the LTC2241CUP-10 accepts single-ended clock inputs on ENC+ while tying ENC– to ground through a 0.1 μF capacitor, as documented in the Pin Functions section. However, differential clocking (ENC+/ENC–) is strongly recommended to maximize common-mode noise rejection and minimize aperture jitter degradation in noisy RF environments.