Analog Devices Inc. LTC2230CUP#PBF

Overview

LTC2230CUP#PBF from Analog Devices (formerly Linear Technology) is a 10-bit, 170 Msps analog-to-digital converter optimized for high-frequency signal digitization in communications infrastructure. It delivers 61 dB SNR at 140 MHz input, 75 dB SFDR up to 200 MHz, and features 775 MHz full-power bandwidth, single 3.3 V supply operation, and LVDS/CMOS/demultiplexed CMOS output flexibility. It is used in cable head-end systems for wideband RF sampling.

For engineers reviewing the LTC2230CUP#PBF datasheet, LTC2230CUP#PBF pinout, LTC2230CUP#PBF application, or LTC2230CUP#PBF equivalent, key selection criteria include its 170 Msps sample rate, ±0.5 V / ±1 V selectable input range, 0.15 psRMS aperture jitter, and 64-pin 9 mm × 9 mm QFN package with exposed thermal pad.

Technical Context

The LTC2230CUP#PBF employs a 10-bit pipelined ADC architecture with integrated sample-and-hold, correction logic, and flexible reference management. Its ultralow 0.15 psRMS jitter enables undersampling of IF signals up to 200 MHz while maintaining 61 dB SNR performance. The device supports differential or single-ended encode inputs and includes an optional clock duty cycle stabilizer for robust timing across varied clock sources.

Digital outputs are configurable as LVDS, full-rate CMOS, or demultiplexed CMOS (interleaved or simultaneous update), with separate OVDD supply allowing output swing from 0.5 V to 3.6 V. Input common-mode voltage is programmable via SENSE and VCM pins, supporting ±0.5 V or ±1 V differential input ranges with internal reference.

Key Specifications

Pinout & Package

The LTC2230CUP#PBF is housed in a 64-lead 9 mm × 9 mm plastic QFN package with exposed thermal pad (Pin 65 = GND), requiring soldering to PCB 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 AD9208BCPZ-500 and LTC2220IUP#PBF, the LTC2230CUP#PBF offers optimal balance of 10-bit resolution, 170 Msps speed, 75 dB SFDR, and low 890 mW power in a compact QFN-making it ideal for space-constrained, thermally sensitive cable and wireless infrastructure designs where parallel interface simplicity is valued.

Availability

LTC2230CUP#PBF is available at Aetrix Electronics and suitable for cable head-end systems, RF power amplifier linearization, and communications test equipment requiring stable component supply, long-term obsolescence management, and traceable sourcing.

Supply support for LTC2230CUP#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 DSP technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2230CUP#PBF belongs to Linear's high-speed ADC product line, engineered specifically for demanding communications infrastructure applications requiring wide bandwidth, low jitter, and flexible digital interfacing in thermally constrained environments.

FAQ

What is the operating temperature range for the LTC2230CUP#PBF?

The LTC2230CUP#PBF is specified for commercial-grade operation from 0°C to 70°C ambient temperature. This range aligns with indoor infrastructure equipment such as cable modems, CMTS line cards, and lab-grade test instruments where environmental control is maintained. The part uses the "C" grade suffix (CUP) to denote this temperature specification, distinct from the industrial-grade LTC2230IUP#PBF (–40°C to +85°C).

Does the LTC2230CUP#PBF support both differential and single-ended analog inputs?

The LTC2230CUP#PBF is designed for differential analog input only, using AIN+ (Pins 1, 2) and AIN– (Pins 3, 4). While the encode clock (ENC+/ENC–) accepts either differential or single-ended drive, the analog input path requires a true differential signal to achieve specified 61 dB SNR and 75 dB SFDR. Single-ended analog input degrades common-mode rejection and increases distortion, voiding AC performance guarantees.

How does the SENSE pin configure input range on the LTC2230CUP#PBF?

The SENSE pin (Pin 59) configures the LTC2230CUP#PBF's full-scale input range: tying SENSE to VCM (1.6 V) selects ±0.5 V differential range; tying to VDD (3.3 V) selects ±1 V; applying an external 0.5–1.0 V reference sets ±V_SENSE. This direct hardware configuration eliminates need for register writes or external gain-switching circuitry, enabling rapid signal chain adaptation in field-deployed equipment.

What are the power consumption values for the LTC2230CUP#PBF in different operating modes?

In normal LVDS output mode at 170 Msps, the LTC2230CUP#PBF dissipates 890 mW total (264 mA @ 3.3 V VDD + 53 mA @ 3.3 V OVDD). In nap mode (SHDN = VDD, OE = GND), power drops to 35 mW; in shutdown (SHDN = OE = VDD), it falls to 2 mW. These low-power states retain configuration registers and allow fast wake-up (<100 ns), making the LTC2230CUP#PBF suitable for burst-mode systems like DOCSIS upstream receivers.

Can the LTC2230CUP#PBF be used with an FPGA that only supports 1.8 V CMOS I/O?

Yes - the LTC2230CUP#PBF supports CMOS output mode with OVDD programmable from 0.5 V to 3.6 V. When configured for full-rate CMOS output and OVDD = 1.8 V, the digital outputs meet 1.8 V logic thresholds (VOH ≥ 1.79 V, VOL ≤ 0.09 V at 1.6 mA load), ensuring reliable interfacing with Xilinx Artix-7 or Intel Cyclone V FPGAs without level-shifting circuitry.