Analog Devices Inc. LTC2325HUKG-12#PBF

Overview

LTC2325HUKG-12#PBF from Analog Devices is a quad-channel, 12-bit + sign successive approximation register (SAR) analog-to-digital converter with simultaneous sampling, 5 Msps per channel throughput, ±0.5 LSB typical INL, and 77 dB SNR at 2.2 MHz input - designed for high-speed data acquisition in multiphase motor control and optical networking systems.

For engineers reviewing the LTC2325HUKG-12#PBF datasheet, LTC2325HUKG-12#PBF pinout, LTC2325HUKG-12#PBF application, or LTC2325HUKG-12#PBF equivalent, key selection criteria include guaranteed operation to 125°C, internal 4.096 V temperature-compensated reference (20 ppm/°C max), LVDS/CMOS SPI-compatible serial interface, and true differential 8 V_P-P inputs with wide common-mode range.

Technical Context

The LTC2325HUKG-12#PBF implements four independent SAR ADC cores sharing a synchronized sample-and-hold architecture, enabling precise phase-coherent acquisition across all channels. It supports both CMOS and LVDS digital I/O modes via the CMOS/LVDS pin, with configurable SDR/DDR timing via the SDR/DDR pin.

Its internal reference buffers (REFOUT1–4) deliver 4.096 V (or 2.048 V) with low drift and can be disabled via REFBUFEN to accept external references from 1.25 V to 5 V. Aperture jitter is specified at 1 ps_RMS, and aperture delay matching between channels is ≤500 ps - critical for time-interleaved or phase-sensitive measurements.

Key Specifications

Pinout & Package

52-lead (7 mm × 8 mm) plastic QFN package with exposed thermal pad (Pin 53 = GND). Pin pitch: 0.5 mm. RoHS-compliant, lead-free finish (#PBF).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7606C-16 and ADS8684, the LTC2325HUKG-12#PBF uniquely delivers 5 Msps simultaneous sampling with integrated 4.096 V reference and LVDS interface in a compact 7 mm × 8 mm QFN - making it optimal for space-constrained, high-dynamic-range applications requiring phase coherence and minimal external components.

Availability

LTC2325HUKG-12#PBF is available at Aetrix Electronics and suitable for high-speed motor control, optical network monitoring, and industrial data acquisition requiring stable component supply across extended temperature ranges.

Supply support for LTC2325HUKG-12#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 LTC2325 family was developed by Analog Devices' Linear Technology division to address demand for high-speed, multi-channel SAR ADCs with integrated references and flexible digital interfaces - specifically targeting precision data acquisition in harsh thermal environments.

FAQ

What is the maximum operating temperature rating for the LTC2325HUKG-12#PBF?

The LTC2325HUKG-12#PBF is rated for continuous operation from –40°C to +125°C, meeting the H-grade specification. This is confirmed in the Absolute Maximum Ratings table and applies across all electrical performance parameters - unlike C- or I-grade variants which are limited to 70°C or 85°C maximum junction temperature.

Does the LTC2325HUKG-12#PBF require an external reference, or does it include an internal one?

The LTC2325HUKG-12#PBF includes an internal, temperature-compensated 4.096 V (or 2.048 V) reference with ≤20 ppm/°C drift. The REFBUFEN pin allows disabling the internal buffers to accept external references from 1.25 V to 5 V - so no external reference is required unless higher precision or custom voltage is needed.

How many independent analog input channels does the LTC2325HUKG-12#PBF support, and are they sampled simultaneously?

The LTC2325HUKG-12#PBF supports four fully independent analog input channels (AIN1± through AIN4±), all sampled simultaneously using a shared, synchronized sample-and-hold architecture. Inter-channel aperture delay matching is guaranteed ≤500 ps - a key differentiator versus multiplexed quad ADCs.

What digital interface options does the LTC2325HUKG-12#PBF support, and how are they configured?

The LTC2325HUKG-12#PBF supports both CMOS and LVDS serial interfaces, selected via the CMOS/LVDS pin (GND = CMOS, OVDD = LVDS, floating = low-power LVDS). It also supports SDR or DDR data transfer via the SDR/DDR pin - enabling flexible FPGA interfacing without external level shifters or terminators.

What power-saving modes are available on the LTC2325HUKG-12#PBF, and what are their typical current draws?

The LTC2325HUKG-12#PBF offers Nap Mode (6.4 mA total supply current) and Sleep Mode (20 µA total supply current), both entered via control of the CNV pin sequence. These modes retain register state and reference bias, allowing wake-up in <50 ms - ideal for duty-cycled sensor nodes or standby states in industrial controllers.