Analog Devices Inc. LTC2283CUP#PBF

Overview

LTC2283CUP#PBF from Analog Devices (formerly Linear Technology) is a dual 12-bit, 125Msps low-power 3V analog-to-digital converter optimized for high-frequency, wide-dynamic-range signal digitization in communications and imaging systems. It delivers 70.2dB SNR and 88dB SFDR at 5MHz input, ±0.4LSB INL, 640MHz full-power bandwidth, and operates from a single 3V supply consuming 790mW.

For engineers reviewing the LTC2283CUP#PBF datasheet, LTC2283CUP#PBF pinout, LTC2283CUP#PBF application, or LTC2283CUP#PBF equivalent, key selection criteria include dual-channel synchronization, clock duty cycle stabilization, flexible 1VP-P to 2VP-P input range, and QFN-64 package compatibility with high-density RF layouts.

Technical Context

The LTC2283CUP#PBF implements a six-stage CMOS pipelined ADC architecture per channel, achieving 5-cycle pipeline latency and supporting simultaneous sampling via independent CLKA/CLKB inputs or synchronized operation with CLKOUT-driven data latching. Its internal 1.5V common-mode reference (VCMA/VCMB) and programmable SENSEA/SENSEB pins enable ±0.5V or ±1V differential input ranges without external components.

It integrates a clock duty cycle stabilizer (enabled via MODE pin), shutdown/nap modes reducing power to 2mW or 15mW per channel, and 110dB channel isolation at 100MHz. Output drivers support OVDD from 0.5V to 3.6V, enabling direct interfacing with LVDS, CMOS, or low-voltage logic families.

Key Specifications

Pinout & Package

The LTC2283CUP#PBF is housed in a 64-lead (9mm × 9mm) plastic QFN package with exposed pad (Pin 65) requiring soldering to PCB ground for thermal and electrical integrity. Pin pitch is 0.5mm; package is RoHS-compliant and lead-free (PbF).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9233BCPZ-125, the LTC2283CUP#PBF provides true dual-channel coherence and superior channel isolation; compared with LTC2285CUP#PBF, it trades 2 bits of resolution for 30% lower power and identical footprint - making it optimal for power-sensitive wideband receivers.

Availability

LTC2283CUP#PBF is available at Aetrix Electronics and suitable for wireless infrastructure, medical imaging, and portable test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for LTC2283CUP#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2283CUP#PBF belongs to ADI's high-speed data converter product line, designed specifically for demanding RF/IF digitization in space-constrained, thermally sensitive applications where dual-channel synchronization and low power are mandatory.

FAQ

What is the operating temperature range for the LTC2283CUP#PBF?

The LTC2283CUP#PBF is rated for commercial temperature operation from 0°C to 70°C. This grade is validated per the Absolute Maximum Ratings table in the official datasheet, with guaranteed performance over this range under specified supply and input conditions. The 'C' suffix explicitly denotes the 0°C to 70°C grade, distinct from the industrial-grade LTC2283IUP#PBF (–40°C to 85°C). Thermal derating is not required within this envelope when mounted per recommended PCB layout guidelines.

Does the LTC2283CUP#PBF support single-ended analog input?

Yes, the LTC2283CUP#PBF supports single-ended analog input: drive AIN+ with the signal and tie AIN– to 1.5V (VCMA or VCMB). However, harmonic distortion and INL degrade relative to differential operation, while SNR and DNL remain unchanged. The datasheet confirms this behavior in the APPLICATIONS INFORMATION section, noting that single-ended drive is viable for cost-sensitive designs where SFDR is less critical than raw SNR.

How does the MODE pin affect output formatting and clock functionality in the LTC2283CUP#PBF?

The MODE pin on the LTC2283CUP#PBF controls both output data format and clock duty cycle stabilization. Ground selects offset binary with stabilizer off; 1/3 VDD selects offset binary with stabilizer on; 2/3 VDD selects 2's complement with stabilizer on; VDD selects 2's complement with stabilizer off. This dual function is documented in the PIN FUNCTIONS section and enables configuration without additional control lines - critical for minimizing FPGA pin count in compact systems.

Can the LTC2283CUP#PBF operate with separate analog and digital supplies?

No - the LTC2283CUP#PBF uses a single 3V analog supply (VDD = 2.85V to 3.4V) for the ADC core and references, while output drivers are powered separately by OVDD (0.5V to 3.6V). This separation isolates noise-sensitive analog circuitry from digital switching noise, but eliminates need for dual analog rails. The datasheet specifies OVDD = VDD is permissible but not required, and recommends decoupling each supply independently per layout guidelines.

What is the purpose of the OF (overflow/underflow) pin on the LTC2283CUP#PBF?

OF is a shared active-high output flag indicating overflow or underflow on either Channel A or Channel B. It asserts when input exceeds the selected full-scale range (±0.5V or ±1V), enabling real-time saturation detection without reading all 24 output bits. The functional block diagram and PIN FUNCTIONS section confirm OF is internally OR'd across both channels, making it ideal for fast interrupt-driven clipping response in closed-loop AGC or signal monitoring systems using the LTC2283CUP#PBF.