Analog Devices Inc. LTC2220IUP#TRPBF

Overview

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

For engineers reviewing the LTC2220IUP#TRPBF datasheet, LTC2220IUP#TRPBF pinout, LTC2220IUP#TRPBF application, or LTC2220IUP#TRPBF equivalent, key selection criteria include its 170Msps sampling rate, ±0.4LSB INL (typ), LVDS/CMOS output flexibility, 3.3V single-supply operation, and –40°C to +85°C industrial temperature grade.

Technical Context

The LTC2220IUP#TRPBF employs a 12-bit pipelined ADC architecture with integrated sample-and-hold and correction logic, supporting differential analog inputs up to 775MHz full-power bandwidth. Its clock interface accepts differential LVDS, PECL, TTL, or CMOS encode signals, with an optional duty cycle stabilizer to maintain performance across wide input duty cycles.

Digital outputs are configurable as LVDS, full-rate CMOS, or demultiplexed CMOS (interleaved or simultaneous update), with separate OVDD supply allowing 0.5V–3.6V CMOS swing. Internal reference supports ±0.5V or ±1V input ranges; external reference is also supported via SENSE pin.

Key Specifications

Pinout & Package

64-pin 9mm × 9mm plastic QFN package with exposed thermal pad (Pin 65 = GND). Pinout supports differential analog inputs (AIN+, AIN–), dual-reference banks (REFHA/REFLA/REFHB/REFLB), flexible clocking (ENC+, ENC–), programmable output mode (LVDS, MODE, SENSE), and dual-bus LVDS/CMOS outputs (DA0–DA11, DB0–DB11).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9230-170EBZ and ADS5463IPFP, the LTC2220IUP#TRPBF offers superior jitter performance at lower power and greater interface flexibility (LVDS/CMOS/demux), making it optimal for space- and thermally constrained communications infrastructure where 12-bit fidelity at 170Msps is sufficient.

Availability

LTC2220IUP#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, cable access equipment, and test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2220IUP#TRPBF 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 industrial, automotive, communications, and healthcare markets.

The LTC2220IUP#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding communications infrastructure applications where dynamic range, jitter, and thermal stability are critical.

FAQ

What is the maximum analog input frequency supported by the LTC2220IUP#TRPBF?

The LTC2220IUP#TRPBF has a 775MHz full-power bandwidth for its sample-and-hold circuit, enabling accurate digitization of analog inputs up to 170MHz while maintaining 80dB SFDR. This makes the LTC2220IUP#TRPBF suitable for undersampling IF signals in broadband receivers without requiring external anti-alias filtering above 170MHz.

Does the LTC2220IUP#TRPBF support both differential and single-ended analog inputs?

The LTC2220IUP#TRPBF is optimized for differential analog inputs (pins AIN+, AIN–) with specified performance including 67.5dB SNR and ±0.4LSB INL. Single-ended input operation is possible but degrades AC performance - datasheet specifies reduced SNR (62.7dB typ) and higher DNL (±0.3LSB) under single-ended conditions. For production designs, differential drive is strongly recommended to achieve published specifications for the LTC2220IUP#TRPBF.

How does the SENSE pin configure input range on the LTC2220IUP#TRPBF?

The SENSE pin on the LTC2220IUP#TRPBF selects full-scale input range: connecting to VCM (1.6V) sets ±0.5V differential range; connecting to VDD (3.3V) sets ±1V; applying an external voltage between 0.5V and 1V sets ±V_SENSE. This allows dynamic range adaptation to front-end signal levels without changing external components - a key feature distinguishing the LTC2220IUP#TRPBF from fixed-range ADCs.

Can the LTC2220IUP#TRPBF operate with a 2.5V OVDD supply in CMOS output mode?

Yes, the LTC2220IUP#TRPBF supports OVDD from 0.5V to 3.6V in CMOS mode. At OVDD = 2.5V, VOH is guaranteed ≥2.49V (IO = –200µA) and VOL ≤0.09V (IO = 1.6mA), ensuring robust interfacing with 2.5V FPGA I/O banks. This voltage flexibility allows direct connection to legacy or low-voltage logic without level shifters - a design advantage unique to the LTC2220IUP#TRPBF among 170Msps ADCs.

What is the pipeline latency of the LTC2220IUP#TRPBF in LVDS output mode?

The LTC2220IUP#TRPBF has a fixed pipeline latency of 5 clock cycles in all output modes, including LVDS. This deterministic delay simplifies timing alignment in synchronous systems - for example, when feeding sampled data into an FPGA-based DPD engine, the LTC2220IUP#TRPBF's 5-cycle latency allows precise placement of feedback path delays to match forward-path latency, critical for loop stability.