Analog Devices Inc. LTC2207IUK-14#PBF

Overview

LTC2207IUK-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 105Msps analog-to-digital converter optimized for high-frequency signal digitization up to 700MHz full-power bandwidth. It features 77.3dBFS SNR, 98dB spurious-free dynamic range (SFDR), and 80fsRMS aperture jitter, enabling undersampling in cellular base station receivers and spectrum analyzers.

For engineers reviewing the LTC2207IUK-14#PBF datasheet, LTC2207IUK-14#PBF pinout, LTC2207IUK-14#PBF application, or LTC2207IUK-14#PBF equivalent, key selection criteria include its –40°C to +85°C industrial temperature grade, differential input architecture with PGA front end, CMOS output voltage programmability (0.5V–3.6V), and compatibility with LVDS/PECL/TTL/CMOS clock inputs.

Technical Context

The LTC2207IUK-14#PBF employs a pipelined ADC core with integrated sample-and-hold amplifier and internal reference generator. Its 700MHz full-power bandwidth supports RF sampling of IF signals up to 250MHz while maintaining >82dB SFDR at that frequency under 1.5VP-P input range.

It incorporates configurable digital features including optional internal dither, data output randomizer, out-of-range indicator (OF), and clock duty cycle stabilizer-enabling robust operation with non-ideal clock sources. The ENC+/ENC– encode interface accepts differential or single-ended clocks, and the separate OVDD supply allows independent control of output logic swing.

Key Specifications

Pinout & Package

Package: 48-lead 7mm × 7mm plastic QFN (UK package) with exposed thermal pad (Pin 49 = GND). Requires soldering of exposed pad for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2207CUK-14#PBF, the LTC2207IUK-14#PBF provides guaranteed performance over –40°C to +85°C, essential for outdoor base stations; versus AD9246BCPZ-105, it trades higher power for on-chip signal conditioning (PGA, dither, randomizer) and flexible CMOS output drive.

Availability

LTC2207IUK-14#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, test instrumentation, and medical imaging systems requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for LTC2207IUK-14#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 digital signal processing technologies.

The LTC2207 series belongs to Linear's ultra-low-jitter, wide-bandwidth pipeline ADC product line, designed specifically for demanding communications and instrumentation applications requiring RF sampling capability and DC accuracy.

FAQ

What is the operating temperature range of the LTC2207IUK-14#PBF?

The LTC2207IUK-14#PBF is rated for industrial operation from –40°C to +85°C. This range is confirmed in the Absolute Maximum Ratings table and applies to all dynamic and DC specifications unless otherwise noted. The "I" suffix explicitly denotes this industrial grade, distinguishing it from the commercial-grade "C" variant (0°C to 70°C).

Does the LTC2207IUK-14#PBF require an external reference voltage?

No, the LTC2207IUK-14#PBF includes an internal 2.5V bandgap reference. The SENSE pin must be tied to VDD to activate it. Alternatively, an external 1.25V or 2.5V reference may be applied to SENSE, both yielding a 2.25VP-P full-scale range when PGA = 0. No external reference is mandatory for basic operation.

How does the clock duty cycle stabilizer affect timing in the LTC2207IUK-14#PBF?

The clock duty cycle stabilizer in the LTC2207IUK-14#PBF corrects asymmetric encode clocks, allowing full 105Msps performance with input duty cycles from 40% to 60%. Without it, minimum ENC high/low times increase to 5.94ns; with it enabled, they reduce to 4.52ns, preserving timing margins in high-speed designs.

Can the LTC2207IUK-14#PBF interface directly with 1.8V FPGA I/O banks?

Yes. The LTC2207IUK-14#PBF supports OVDD from 0.5V to 3.6V. Setting OVDD = 1.8V configures the D0–D13 and OF outputs for 1.8V CMOS logic levels, enabling direct connection to 1.8V FPGA I/O without level shifters. Output drive strength remains sufficient at 160µA sink/50mA source.

What is the function of the OF (out-of-range) pin on the LTC2207IUK-14#PBF?

OF is an active-high, asynchronous flag that asserts when the analog input exceeds the selected full-scale range (±1.125V for 2.25VP-P or ±0.75V for 1.5VP-P). It responds within one sample period and is intended for real-time AGC or signal-clipping detection-critical in receiver front ends where rapid gain adjustment prevents data corruption.