Analog Devices Inc. LTC2320CUKG-16#TRPBF

Overview

LTC2320CUKG-16#TRPBF from Analog Devices (formerly Linear Technology) is an octal, 16-bit, 1.5 Msps/channel simultaneous-sampling SAR ADC with differential inputs, ±2 LSB INL typical, 82 dB SNR at 500 kHz, and integrated 4.096 V temperature-compensated reference. It operates from a single 3.3 V or 5 V supply and targets high-fidelity data acquisition in multiphase motor control and optical networking systems.

For engineers reviewing the LTC2320CUKG-16#TRPBF datasheet, LTC2320CUKG-16#TRPBF pinout, LTC2320CUKG-16#TRPBF application, or LTC2320CUKG-16#TRPBF equivalent, key selection criteria include simultaneous 8-channel sampling integrity, LVDS/CMOS serial interface flexibility, on-chip reference stability (20 ppm/°C max), low power dissipation (20 mW/channel), and operation across 0°C to 70°C.

Technical Context

The LTC2320CUKG-16#TRPBF implements eight independent SAR ADC cores, each with true differential input stages and matched aperture timing to ensure sub-500 ps aperture delay matching. Its internal reference architecture supports four buffered 4.096 V outputs (REFOUT1–4), configurable via REFBUFEN for external reference override.

It supports dual-mode digital I/O: CMOS (1.8 V–2.5 V OVDD) or LVDS (2.5 V OVDD), with selectable SDR/DDR serialization. Timing is synchronized via CNV-triggered conversion and skew-matched CLKOUT output, enabling deterministic FPGA interfacing without pipeline latency.

Key Specifications

Pinout & Package

52-pin plastic QFN (7 mm × 8 mm), exposed pad (Pin 53) soldered to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7606C-16 and ADS8688, the LTC2320CUKG-16#TRPBF delivers 50% higher per-channel throughput, integrated low-drift reference, and LVDS support - making it optimal for FPGA-based real-time systems demanding deterministic timing and minimal external components.

Availability

LTC2320CUKG-16#TRPBF is available at Aetrix Electronics and suitable for high-speed motor control, optical network monitoring, and communications test equipment requiring stable component supply, long-term manufacturability, and guaranteed 0°C to 70°C operation.

Supply support for LTC2320CUKG-16#TRPBF 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 LTC2320 family was designed by ADI's former Linear Technology division to address high-precision, high-throughput data acquisition where simultaneous sampling, low noise, and flexible digital interfacing are critical - especially in FPGA-centric embedded systems.

FAQ

What is the operating temperature range for the LTC2320CUKG-16#TRPBF?

The LTC2320CUKG-16#TRPBF is rated for 0°C to 70°C ambient operation, as indicated by the "C" grade suffix in its part number. This commercial-grade specification ensures reliable performance in office, lab, and non-extreme industrial environments. The device's internal reference exhibits ≤20 ppm/°C drift across this range, and all AC/DC specifications - including SNR, INL, and sampling rate - are guaranteed within these limits. For extended temperature operation, consider the LTC2320IUKG-16#TRPBF (–40°C to 85°C) or LTC2320HUKG-16#TRPBF (–40°C to 125°C).

Does the LTC2320CUKG-16#TRPBF require an external reference?

No, the LTC2320CUKG-16#TRPBF includes an integrated, temperature-compensated 4.096 V reference with four buffered outputs (REFOUT1–4) and ≤20 ppm/°C drift. These outputs can directly drive the ADC cores' input ranges. However, REFBUFEN (Pin 43) allows disabling the internal buffers to accept external references from 1.25 V to 5 V - useful when system-level reference sharing or tighter initial accuracy (<±0.1%) is required. The LTC2320CUKG-16#TRPBF functions fully with or without external reference support.

How does the simultaneous sampling architecture of the LTC2320CUKG-16#TRPBF work?

The LTC2320CUKG-16#TRPBF employs eight independent SAR ADC cores, each with its own track-and-hold circuit, all triggered by a single CNV pulse. This architecture ensures identical aperture timing across all channels, with ≤500 ps inter-channel aperture delay matching. Unlike multiplexed ADCs, there is no sequential sampling skew - enabling true time-coherent acquisition of eight signals (e.g., three-phase currents + voltages + auxiliary sensors). The LTC2320CUKG-16#TRPBF outputs data simultaneously via eight SDO lines (CMOS mode) or four differential pairs (LVDS mode), preserving sample alignment without post-processing correction.

What digital interface options does the LTC2320CUKG-16#TRPBF support?

The LTC2320CUKG-16#TRPBF supports three digital interface configurations via two hardware pins: CMOS/LVDS (Pin 25) and SDR/DDR (Pin 23). In CMOS mode (Pin 25 = GND), it offers eight single-ended SDO outputs with 1.8 V–2.5 V OVDD compatibility. In LVDS mode (Pin 25 = OVDD), it provides four differential data lanes (SDOA± to SDOF±), each carrying two channels. DDR mode (Pin 23 = OVDD) doubles data rate per clock edge. All modes use SCK and CNV for timing, with CLKOUT providing a skew-matched latch clock - making the LTC2320CUKG-16#TRPBF compatible with Xilinx and Intel FPGAs.

What power-saving modes are available on the LTC2320CUKG-16#TRPBF?

The LTC2320CUKG-16#TRPBF offers two low-power states: Nap mode (5.3–6.9 mA total supply current) entered after conversion completion, and Sleep mode (20–110 µA) for extended idle periods. Both modes retain register settings and reference bias, enabling wake-up in <1 µs without reinitialization. Power dissipation drops to 18 mW (Nap) or 26 µW (Sleep) at 3.3 V supply. These modes are controlled via dedicated control bits and do not affect the CNV-triggered sampling timing - allowing dynamic power scaling in burst-mode DAQ systems while maintaining deterministic latency for the LTC2320CUKG-16#TRPBF.