Analog Devices Inc. LTC2220CUP#TRPBF

Overview

LTC2220CUP#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 at 140MHz input, 80dB SFDR up to 170MHz, and ultralow 0.15psRMS aperture jitter - enabling undersampling of IF signals in wireless base stations and cable head-end systems.

For engineers reviewing the LTC2220CUP#TRPBF datasheet, LTC2220CUP#TRPBF pinout, LTC2220CUP#TRPBF application, or LTC2220CUP#TRPBF equivalent, key selection criteria include its 64-pin QFN package, dual LVDS/CMOS output flexibility, ±0.5V or ±1V selectable input range, internal reference support, and compatibility with demanding wideband RF sampling architectures.

Technical Context

The LTC2220CUP#TRPBF employs a 12-bit pipelined ADC core with integrated sample-and-hold and correction logic, supporting full-power bandwidth of 775MHz. Its clock interface accepts differential LVDS, PECL, TTL, or CMOS inputs, and includes an optional duty cycle stabilizer to maintain performance across non-50% clock waveforms.

Digital outputs are configurable as LVDS, single-bus CMOS at full data rate, or demultiplexed CMOS buses at half-rate with interleaved or simultaneous update. A separate OVDD supply (0.5V–3.6V) enables voltage-level adaptation for interfacing with diverse FPGA or ASIC I/O standards.

Key Specifications

Pinout & Package

64-lead (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9230-170EBZ, the LTC2220CUP#TRPBF offers superior integration (internal reference, duty cycle stabilizer, flexible output modes) and lower power, while LTC2221CUP#TRPBF provides a drop-in lower-speed, lower-power alternative within the same footprint and software-compatible register map.

Availability

LTC2220CUP#TRPBF is available at Aetrix Electronics and suitable for wireless infrastructure, cable head-end systems, and RF test equipment requiring stable component supply, long-lifecycle support, and traceable sourcing for production programs.

Supply support for LTC2220CUP#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 aerospace, communications, industrial, and medical markets.

The LTC2220 series belongs to ADI's high-speed data converter product line, engineered specifically for wideband communications applications demanding exceptional dynamic range, low jitter, and flexible digital interfacing in compact form factors.

FAQ

What is the operating temperature range for the LTC2220CUP#TRPBF?

The LTC2220CUP#TRPBF is rated for commercial temperature operation from 0°C to 70°C. This grade is validated for use in controlled-environment applications such as indoor base station equipment, lab instruments, and cable head-end systems where ambient thermal conditions remain within specification limits. The 'C' suffix explicitly denotes this commercial temperature range.

Does the LTC2220CUP#TRPBF support both differential and single-ended analog inputs?

The LTC2220CUP#TRPBF is designed for differential analog input operation using AIN+ and AIN– pins (Pins 1–4). While the datasheet specifies differential input performance (e.g., 67.5dB SNR, 80dB SFDR), it also characterizes single-ended input behavior with degraded specs: ±1LSB INL and ±0.3LSB DNL. For optimal AC performance, differential drive is required; single-ended use is not recommended in high-dynamic-range applications.

How does the SENSE pin configure the input range on the LTC2220CUP#TRPBF?

The SENSE pin (Pin 59) configures the LTC2220CUP#TRPBF's full-scale input range: connecting SENSE to VCM selects ±0.5V, connecting to VDD selects ±1V, and applying an external voltage between 0.5V and 1V sets ±VSENSE. This eliminates external resistive dividers or reference buffers, enabling rapid reconfiguration of gain staging in adaptive receiver architectures without changing hardware.

Can the LTC2220CUP#TRPBF operate with a 2.5V OVDD supply for CMOS outputs?

Yes, the LTC2220CUP#TRPBF supports OVDD from 0.5V to 3.6V in CMOS output mode. At OVDD = 2.5V, the datasheet specifies VOH = 2.49V (IO = –200µA) and VOL = 0.09V (IO = 1.6mA), ensuring compatibility with 2.5V LVTTL and LVCMOS interfaces. This allows direct connection to FPGAs or ASICs with 2.5V I/O banks without level-shifting circuitry.

What is the pipeline latency of the LTC2220CUP#TRPBF, and why does it matter?

The LTC2220CUP#TRPBF has a fixed pipeline latency of 5 clock cycles in all output modes (LVDS, full-rate CMOS, demux interleaved), and 5–6 cycles in demux simultaneous mode. This deterministic latency is critical for closed-loop systems like digital predistortion, where consistent delay between RF input and digital feedback path enables accurate time-alignment of correction coefficients in real-time DSP engines.