Analog Devices Inc. LTC2324HUKG-16#PBF

Overview

LTC2324HUKG-16#PBF from Analog Devices is a quad, 16-bit, 2 Msps/channel simultaneous-sampling SAR ADC with differential inputs, ±4.096 V input range, 82 dB SNR (typ), ±2 LSB INL (typ), and integrated 2.048 V / 4.096 V temperature-compensated reference. It operates from single 3.3 V or 5 V supply and supports CMOS/LVDS serial interface - ideal for high-speed data acquisition in multiphase motor control and optical networking.

For engineers reviewing the LTC2324HUKG-16#PBF datasheet, LTC2324HUKG-16#PBF pinout, LTC2324HUKG-16#PBF application, or LTC2324HUKG-16#PBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation over –40°C to 125°C, simultaneous sampling across four channels, LVDS/CMOS I/O flexibility, low 40 mW/channel power at 2 Msps, and internal reference stability (20 ppm/°C max).

Technical Context

The LTC2324HUKG-16#PBF implements four independent 16-bit SAR ADC cores with synchronized sample-and-hold circuits enabling true simultaneous sampling. Each channel features fully differential analog inputs with 0 V to VDD common-mode range and ±REFOUTx full-scale swing, supporting bipolar/unipolar/arbitrary input configurations without external configuration.

It integrates four individually buffered reference outputs (REFOUT1–4), each nominally 4.096 V (or 2.048 V when REFBUFEN = GND), with internal reference buffer enable/disable control. The digital interface supports SDR/DDR modes and selectable CMOS (1.8 V–2.5 V) or LVDS (2.5 V) I/O, with dedicated SDOx/CLKOUTx pins per channel for deterministic timing and skew-matched clock distribution.

Key Specifications

Pinout & Package

Package: 52-pin (7 mm × 8 mm) plastic QFN with exposed thermal pad (Pin 53 = GND). RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 16-bit simultaneous-sampling ADC applications.

Compared with AD7606C-16 and ADS8684, the LTC2324HUKG-16#PBF delivers 2× higher per-channel throughput, true simultaneous sampling with <500 ps aperture matching, and wider I/O voltage flexibility (1.8 V–2.5 V), making it uniquely suited for FPGA-based high-speed control and communications infrastructure.

Availability

LTC2324HUKG-16#PBF is available at Aetrix Electronics and suitable for multiphase motor control, optical network monitoring, and high-speed data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2324HUKG-16#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2324HUKG-16#PBF belongs to the Linear Technology (acquired by Analog Devices) high-speed precision ADC product line, engineered specifically for applications demanding simultaneous multi-channel sampling, wide dynamic range, and robust operation in harsh thermal environments.

FAQ

What is the maximum operating temperature range for the LTC2324HUKG-16#PBF?

The LTC2324HUKG-16#PBF is rated for operation from –40°C to +125°C, as confirmed by its H-grade temperature marking in the order information table. This extended range is validated across all electrical specifications including INL, SNR, and reference stability, making it suitable for under-hood automotive and industrial drive applications where ambient temperatures exceed 105°C.

Does the LTC2324HUKG-16#PBF require an external reference?

No, the LTC2324HUKG-16#PBF includes an onboard low-drift (20 ppm/°C max) 4.096 V reference with four buffered outputs (REFOUT1–4). External reference is optional and only needed when higher initial accuracy or different voltage (e.g., 2.5 V) is required - enabled by grounding REFBUFEN and driving REF/REFOUTx pins externally.

How does the LTC2324HUKG-16#PBF achieve true simultaneous sampling across four channels?

The LTC2324HUKG-16#PBF uses four independent sample-and-hold (S/H) circuits, each triggered by the same CNV pulse edge. As shown in the functional block diagram and timing diagrams, all four S/Hs acquire analog input simultaneously, eliminating inter-channel skew. Aperture delay matching is specified at ≤500 ps, ensuring phase coherence for vector control and beamforming.

Can the LTC2324HUKG-16#PBF interface directly with a 1.8 V FPGA I/O bank?

Yes - the LTC2324HUKG-16#PBF supports 1.8 V OVDD operation in CMOS mode (CMOS/LVDS = GND). Digital outputs (SDOx, CLKOUT) meet 1.8 V logic thresholds (VIH = 0.8 × OVDD, VOL = 0.2 V), and input leakage remains within ±10 μA. No level-shifting circuitry is required when OVDD = 1.8 V and SDR/DDR = GND.

What power savings does the nap mode provide for the LTC2324HUKG-16#PBF?

In nap mode, the LTC2324HUKG-16#PBF reduces IVDD current to 5.3–6.4 mA (vs. 31–36.5 mA active), cutting per-channel power dissipation from ~162 mW to ~18 mW at 5 V supply. Sleep mode further lowers total current to 20–90 μA, achieving 424 μW total power - enabling ultra-low-power wake-on-event architectures in portable DAQ systems.