Analog Devices Inc. LTC2324IUKG-12#PBF

Overview

LTC2324IUKG-12#PBF from Analog Devices (formerly Linear Technology) is a quad, 12-bit + sign successive approximation register (SAR) analog-to-digital converter with simultaneous sampling, differential inputs, and integrated 4.096V reference. It delivers 2Msps per channel, ±0.5LSB typical INL, 78.5dB SNR at 500kHz, and operates from single 3.3V or 5V supply - ideal for high-speed data acquisition in multiphase motor control and optical networking.

For engineers reviewing the LTC2324IUKG-12#PBF datasheet, LTC2324IUKG-12#PBF pinout, LTC2324IUKG-12#PBF application, or LTC2324IUKG-12#PBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, simultaneous four-channel sampling with <500ps aperture delay matching, LVDS/CMOS serial interface flexibility, and –40°C to +85°C industrial temperature rating.

Technical Context

The LTC2324IUKG-12#PBF implements four independent SAR ADC cores sharing a common reference architecture with individually buffered REFOUT1–4 outputs. Each channel features true differential input pairs (AINx+/AINx–) supporting ±4.096V full-scale range and >102dB common-mode rejection at 500kHz.

Its digital interface supports CMOS or LVDS I/O modes via dedicated CMOS/LVDS and SDR/DDR pins, enabling configurable serial output timing (SDR or DDR) and skew-matched CLKOUT for FPGA synchronization. Power management includes nap mode (5.3mA) and sleep mode (20μA) to reduce system-level power consumption during idle periods.

Key Specifications

Pinout & Package

Package: 52-lead (7mm × 8mm) plastic QFN with exposed pad (Pin 53), RoHS-compliant, lead-free finish. Thermal resistance θJA = 31°C/W; exposed pad must be soldered to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad SAR ADC applications.

Compared with AD7606C-16 and ADS8684, the LTC2324IUKG-12#PBF uniquely combines 2Msps simultaneous 4-channel sampling, LVDS/CMOS interface flexibility, and integrated low-drift reference - making it optimal for time-critical, phase-coherent, high-throughput DAQ where inter-channel timing integrity is non-negotiable.

Availability

LTC2324IUKG-12#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking line cards, and multiphase motor control designs requiring stable component supply across extended industrial temperature ranges.

Supply support for LTC2324IUKG-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 technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2324 product line delivers high-speed, high-accuracy simultaneous-sampling SAR ADCs optimized for demanding applications including motor control, instrumentation, and optical transport - emphasizing timing coherence, low power, and system integration.

FAQ

What is the operating temperature range of the LTC2324IUKG-12#PBF?

The LTC2324IUKG-12#PBF is rated for operation from –40°C to +85°C, meeting industrial-grade reliability requirements. This is confirmed by the "I" grade designation in the part number and specified in the Absolute Maximum Ratings table. The device maintains full performance specifications-including INL, SNR, and timing-across this entire range.

Does the LTC2324IUKG-12#PBF require an external reference?

No, the LTC2324IUKG-12#PBF includes an onboard low-drift 4.096V temperature-compensated reference with ≤20ppm/°C drift. REFOUT1–4 pins provide buffered outputs per channel. An external reference is optional and only needed if a different voltage (1.25V–5V) or higher precision is required - enabled by grounding REFBUFEN.

How does the LTC2324IUKG-12#PBF support simultaneous sampling across all four channels?

The LTC2324IUKG-12#PBF uses a shared sample-and-hold (S/H) architecture triggered by a single CNV pulse, ensuring all four SAR ADC cores acquire their inputs at precisely the same instant. Aperture delay matching is guaranteed ≤500ps, enabling true time-aligned digitization essential for vector measurements and I/Q signal processing.

Can the LTC2324IUKG-12#PBF interface directly with a 1.8V FPGA I/O bank?

Yes. The LTC2324IUKG-12#PBF supports 1.8V to 2.5V I/O voltages via the OVDD supply (pins 31, 37). When configured in CMOS mode (CMOS/LVDS = GND), its SDOx and CLKOUT outputs are compatible with 1.8V logic levels, and inputs (CNV, SCK) accept 0.2×OVDD to 0.8×OVDD thresholds - fully interoperable with standard 1.8V FPGA I/O banks.

What power-saving modes does the LTC2324IUKG-12#PBF offer, and how much power do they consume?

The LTC2324IUKG-12#PBF offers Nap Mode (5.3mA total supply current) and Sleep Mode (20μA total supply current). Nap Mode halts conversions but keeps reference and bias circuits active for fast wake-up; Sleep Mode shuts down all analog circuitry except wakeup logic. Both modes retain register settings and require no reconfiguration on exit.