Analog Devices Inc. LTC2220IUP-1#PBF

Overview

LTC2220IUP-1#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, 185Msps pipelined analog-to-digital converter optimized for high-frequency signal digitization in communications infrastructure. It delivers 67.5dB SNR at 140MHz input and 80dB SFDR up to 170MHz, with ultralow 0.15psRMS aperture jitter, enabling precise undersampling of IF signals in wireless base stations and cable head-end systems.

For engineers reviewing the LTC2220IUP-1#PBF datasheet, LTC2220IUP-1#PBF pinout, LTC2220IUP-1#PBF application, or LTC2220IUP-1#PBF equivalent, key selection considerations include its dual-mode LVDS/CMOS outputs, ±0.5V or ±1V selectable input range, integrated clock duty cycle stabilizer, shutdown/nap modes, and 64-pin 9mm × 9mm QFN package with exposed thermal pad.

Technical Context

The LTC2220IUP-1#PBF implements a five-stage CMOS pipelined ADC architecture with on-chip correction logic, S/H acquisition delay of 0ns, and pipeline latency of 5 clock cycles in full-rate CMOS or LVDS mode. Its differential analog input path supports 775MHz full-power bandwidth and >80dB CMRR, while internal reference programming via SENSE pin enables flexible ±0.5V/±1V input scaling.

Digital interface flexibility includes three CMOS output formats-full-rate single bus, or demultiplexed A/B buses with interleaved or simultaneous update-and LVDS mode with differential 100Ω termination. Clock inputs accept PECL, LVDS, TTL, or CMOS signals, and MODE/LVDS pins configure output format, clock duty cycle stabilization, and interface mode without external components.

Key Specifications

Pinout & Package

Package: 64-lead (9mm × 9mm) plastic QFN with exposed thermal pad (Pin 65 = GND), RoHS-compliant #PBF finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2220CUP-1#PBF and AD9230-170EBZ, the LTC2220IUP-1#PBF uniquely combines industrial temperature rating, 185Msps speed, single-supply operation, and flexible output formatting-making it the optimal choice for thermally demanding, wideband communications hardware where layout simplicity and timing margin are critical.

Availability

LTC2220IUP-1#PBF is available at Aetrix Electronics and suitable for wireless infrastructure, cable head-end systems, and RF test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2220IUP-1#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 technologies, serving communications, industrial, automotive, and healthcare markets.

The LTC2220 family was designed specifically for high-dynamic-range, high-speed digitization in RF and IF signal chains-emphasizing low jitter, flexible interfacing, and robust analog input performance in compact QFN packages.

FAQ

What is the operating temperature range of the LTC2220IUP-1#PBF?

The LTC2220IUP-1#PBF is rated for industrial temperature operation from –40°C to +85°C, verified per manufacturer specifications. This range ensures reliable performance in outdoor wireless base stations, industrial test equipment, and cable infrastructure hardware exposed to uncontrolled ambient conditions. The LTC2220IUP-1#PBF maintains full AC and DC specifications-including 67.5dB SNR and ±0.7LSB INL-across this entire range.

Does the LTC2220IUP-1#PBF support both LVDS and CMOS digital outputs?

Yes, the LTC2220IUP-1#PBF supports both LVDS and CMOS outputs via the LVDS pin (Pin 57). When pulled to VDD, it enables differential LVDS mode with 247–454mV differential swing. When pulled to 0V, it selects full-rate CMOS; at 1/3VDD or 2/3VDD, it configures demultiplexed CMOS with simultaneous or interleaved update. All modes are software-configurable without changing PCB layout.

How does the SENSE pin configure input range on the LTC2220IUP-1#PBF?

The SENSE pin (Pin 59) directly programs the LTC2220IUP-1#PBF's full-scale input range: connecting to VCM selects ±0.5V, to VDD selects ±1V, and to an external voltage between 0.5V and 1V selects ±V_SENSE. This eliminates external resistor networks and allows dynamic range optimization for specific RF amplifier output levels without redesigning the analog front-end.

What power-saving modes does the LTC2220IUP-1#PBF offer?

The LTC2220IUP-1#PBF provides two low-power states controlled by SHDN and OE pins: shutdown mode (SHDN = VDD, OE = VDD) draws just 2mW, and nap mode (SHDN = VDD, OE = GND) consumes 35mW while retaining configuration and enabling fast wake-up. Both modes maintain register settings and require no reinitialization, making them ideal for time-sliced or burst-mode RF systems.

Is the LTC2220IUP-1#PBF pin-compatible with other devices in the LTC2220 family?

Yes, the LTC2220IUP-1#PBF shares identical 64-pin QFN pinout and footprint with all members of the LTC2220 family-including LTC2220CUP-1#PBF, LTC2220-1, and LTC2230-enabling drop-in replacement across speed grades (135–185Msps) and resolution variants (10-/12-bit) without PCB revision. Functionality differences are managed entirely through pin strapping and register configuration.