Analog Devices Inc. LTC2320HUKG-12#PBF

Overview

LTC2320HUKG-12#PBF from Analog Devices is a high-speed, octal, 12-bit + sign successive approximation register (SAR) ADC with simultaneous sampling across all eight differential input channels. It delivers 1.5 Msps per channel, 77 dB SNR at 500 kHz input, ±0.25 LSB typical INL, and guaranteed no missing codes - enabling precision acquisition in harsh thermal environments up to 125°C. It is used in multiphase motor control systems requiring synchronized voltage/current sampling.

For engineers reviewing the LTC2320HUKG-12#PBF datasheet, LTC2320HUKG-12#PBF pinout, LTC2320HUKG-12#PBF application, or LTC2320HUKG-12#PBF equivalent, key selection considerations include simultaneous sampling latency, internal reference drift (20 ppm/°C max), LVDS/CMOS interface flexibility, 8 VP-P differential input range, and thermal robustness for industrial embedded signal chains.

Technical Context

The LTC2320HUKG-12#PBF implements eight independent SAR ADC cores sharing a common CNV timing signal to ensure true simultaneous sampling. Each core uses a 2.048 V or 4.096 V internal temperature-compensated reference buffer (REFOUT1–4), configurable via REFBUFEN, with output impedance <0.25 Ω and line regulation ≤0.3 mV/V.

Its digital interface supports CMOS or LVDS I/O modes selected by the CMOS/LVDS pin, with SDR/DDR mode controlled by SDR/DDR. Timing includes 450 ns conversion time, 215 ns acquisition window, and skew-matched CLKOUT for FPGA latch synchronization - critical for coherent multi-channel capture in optical networking and data acquisition.

Key Specifications

Pinout & Package

52-lead (7 mm × 8 mm) QFN package with exposed pad (Pin 53) requiring solder connection to ground plane for thermal and EMI performance. Pin functions validated per Analog Devices Rev. C datasheet Figure 9 and Table 9.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed simultaneous-sampling ADC applications.

Compared with AD7606C-16 and ADS8688, the LTC2320HUKG-12#PBF uniquely combines 1.5 Msps simultaneous sampling, 125°C operation, and LVDS/CMOS interface configurability - making it the sole option for high-reliability, high-throughput, thermally demanding applications like aerospace DAQ and EV inverter monitoring.

Availability

LTC2320HUKG-12#PBF is available at Aetrix Electronics and suitable for multiphase motor control, optical networking equipment, and remote industrial sensing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2320HUKG-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2320 family was designed specifically for high-speed, multi-channel data acquisition in thermally demanding environments - emphasizing simultaneous sampling integrity, internal reference stability, and flexible digital interfacing for FPGA-based systems.

FAQ

What is the maximum operating temperature of the LTC2320HUKG-12#PBF?

The LTC2320HUKG-12#PBF is rated for operation from –40°C to +125°C, as confirmed by its "H" grade designation in the ordering guide and Absolute Maximum Ratings table. This makes it suitable for under-hood automotive, industrial motor drives, and downhole instrumentation where ambient temperatures exceed standard commercial or industrial grades.

Does the LTC2320HUKG-12#PBF support true simultaneous sampling across all eight channels?

Yes, the LTC2320HUKG-12#PBF implements eight independent SAR ADC cores that share a single CNV input. A rising edge on CNV initiates simultaneous acquisition across all channels, and a falling edge triggers concurrent conversion - ensuring zero inter-channel sampling skew, as verified in the Functional Block Diagram and Timing Specifications sections.

Can the internal reference of the LTC2320HUKG-12#PBF be disabled for use with an external reference?

Yes, the internal reference buffers (REFOUT1–4) can be disabled by grounding the REFBUFEN pin (Pin 43). When disabled, external references in the range of 1.25 V to VDD − 0.4 V may be applied to REFOUT1–4 pins - enabling system-level reference sharing or ultra-low-noise external reference integration.

What are the power supply requirements for the LTC2320HUKG-12#PBF?

The LTC2320HUKG-12#PBF requires two supplies: VDD (4.75 V to 5.25 V or 3.13 V to 3.47 V) for analog and core logic, and OVDD (1.71 V to 2.63 V) for digital I/O. At 5 V VDD and 2.5 V OVDD, typical supply currents are 38 mA (VDD) and 34 mA (OVDD) in LVDS mode at 1.5 Msps - totaling ~275 mW total power dissipation.

How does the LTC2320HUKG-12#PBF handle digital interface configuration for CMOS vs. LVDS operation?

The LTC2320HUKG-12#PBF selects I/O mode via the CMOS/LVDS pin: grounded for CMOS (8 SDO outputs), tied to OVDD for LVDS (4 differential SDO pairs), or left floating for low-power LVDS. The SDR/DDR pin further configures clocking - GND for single-edge, OVDD for double-edge data transfer - allowing optimization for speed, power, or FPGA interface compatibility.