Analog Devices Inc. LTC2320CUKG-14#PBF

Overview

LTC2320CUKG-14#PBF from Analog Devices (formerly Linear Technology) is an octal, 14-bit + sign successive approximation register (SAR) analog-to-digital converter with simultaneous sampling across all eight differential input channels. It delivers 1.5 Msps per channel throughput, ±1 LSB INL typical, 81 dB SNR at 500 kHz, and operates from a single 3.3 V or 5 V supply. Its integrated 4.096 V/2.048 V temperature-compensated reference and wide common-mode input range make it ideal for high-fidelity data acquisition in multiphase motor control and optical networking systems.

For engineers reviewing the LTC2320CUKG-14#PBF datasheet, LTC2320CUKG-14#PBF pinout, LTC2320CUKG-14#PBF application, or LTC2320CUKG-14#PBF equivalent, key selection considerations include guaranteed 14-bit no-missing-codes performance, LVDS/CMOS serial interface flexibility, 52-lead QFN package thermal and layout constraints, and operation over 0°C to 70°C ambient - critical for industrial embedded signal chain design.

Technical Context

The LTC2320CUKG-14#PBF implements eight independent SAR ADC cores, each with true differential inputs, 8 V_P-P full-scale range, and matched aperture delay (<500 ps). Its internal reference buffers (REFOUT1–4) support independent voltage scaling per channel group and can be disabled via REFBUFEN for external reference use.

It supports four digital I/O configurations: CMOS SDR/DDR (1.8 V–2.5 V OVDD), LVDS SDR/DDR (2.5 V OVDD), and low-power LVDS. Timing is synchronized via CNV-triggered acquisition and CLKOUT-matched readout, eliminating pipeline latency and enabling deterministic real-time sampling.

Key Specifications

Pinout & Package

Package: 52-lead (7 mm × 8 mm) plastic QFN with exposed pad (Pin 53 = GND), rated for 0°C to 70°C operation. Thermal resistance θ_JA = 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 octal SAR ADC applications.

Compared with AD7606C-16 and ADS8688, the LTC2320CUKG-14#PBF uniquely combines 1.5 Msps octal sampling, LVDS serial output, and 52-lead QFN packaging - optimizing for high-density, high-throughput FPGA-based systems where timing determinism and EMI resilience are critical.

Availability

LTC2320CUKG-14#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, long-term lifecycle assurance, and traceable sourcing.

Supply support for LTC2320CUKG-14#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 digital signal processing semiconductors.

The LTC2320 series was designed specifically for demanding simultaneous-sampling applications in industrial automation, communications infrastructure, and test equipment - emphasizing low latency, channel matching, and flexible digital interfacing.

FAQ

What is the operating temperature range for the LTC2320CUKG-14#PBF?

The LTC2320CUKG-14#PBF is specified for operation from 0°C to 70°C ambient temperature. This commercial-grade rating aligns with its "C" suffix designation and is validated across all electrical parameters including INL, SNR, and reference drift. The device's thermal design - including 31°C/W θ_JA and mandatory exposed-pad grounding - ensures reliable performance within this range under typical PCB power dissipation conditions. For extended temperature operation, consider the I-grade (–40°C to 85°C) or H-grade (–40°C to 125°C) variants.

Does the LTC2320CUKG-14#PBF require an external reference?

No, the LTC2320CUKG-14#PBF integrates a low-drift, temperature-compensated 4.096 V or 2.048 V reference with ≤20 ppm/°C drift, eliminating the need for an external reference in most applications. REFBUFEN (Pin 43) controls internal buffer enable/disable: tie to VDD for internal reference use, or ground it to disable buffers and drive REFOUT1–4 pins with an external 1.25 V–5 V reference. This flexibility allows optimization between BOM simplicity and ultra-high-precision external references.

How does the LTC2320CUKG-14#PBF achieve simultaneous sampling across eight channels?

The LTC2320CUKG-14#PBF uses eight independent SAR ADC cores, each with its own sample-and-hold (S/H) circuit, all triggered synchronously by the CNV input. This architecture ensures true simultaneous acquisition - not time-interleaved sampling - with aperture delay matching <500 ps between channels. The result is zero inter-channel skew, enabling accurate phase difference measurement and coherent multi-sensor analysis without post-processing correction.

What digital interface options does the LTC2320CUKG-14#PBF support?

The LTC2320CUKG-14#PBF supports both CMOS and LVDS serial interfaces, selected via the CMOS/LVDS pin (Pin 25). Each mode supports Single Data Rate (SDR) or Double Data Rate (DDR), configured by the SDR/DDR pin (Pin 23). CMOS mode uses 8 individual SDO lines (1 per channel) with 1.8 V–2.5 V OVDD; LVDS mode uses 4 differential pairs (2 channels per pair) with 2.5 V OVDD and 100 Ω termination. This gives designers flexibility to match FPGA I/O standards and optimize for speed, power, or noise immunity.

Can the LTC2320CUKG-14#PBF operate from a 3.3 V supply?

Yes, the LTC2320CUKG-14#PBF is fully specified for operation from a single 3.3 V supply (VDD = 3.13 V to 3.47 V), delivering 1.5 Msps per channel, 81 dB SNR, and ±1 LSB INL typical. Power dissipation is 102 mW at 3.3 V/1.5 Msps (typical), dropping to 18 mW in nap mode and 20 µW in sleep mode. The 1.71 V–2.63 V OVDD range accommodates 1.8 V or 2.5 V I/O interfaces, making the LTC2320CUKG-14#PBF compatible with modern low-voltage FPGA and ASIC platforms.