Analog Devices Inc. LTC2382IDE-16#TRPBF

Overview

LTC2382IDE-16#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with fully differential ±2.5V input range, 92dB SNR at 20kHz, ±2LSB INL max, and 6.5mW power consumption at full throughput. It operates from a single 2.5V supply (VDD), supports 1.8V–5V I/O logic (OVDD), and targets high-speed data acquisition in industrial and portable instrumentation.

For engineers reviewing the LTC2382IDE-16#TRPBF datasheet, LTC2382IDE-16#TRPBF pinout, LTC2382IDE-16#TRPBF application, or LTC2382IDE-16#TRPBF equivalent, key selection criteria include guaranteed no-missing-codes performance at 16 bits, extended 1.25µs acquisition time enabling low-power driver usage, daisy-chain SPI interface compatibility, internal conversion clock, and operation across –40°C to +85°C.

Technical Context

The LTC2382IDE-16#TRPBF implements a proprietary sampling architecture that initiates acquisition of the next sample during the current conversion cycle, eliminating pipeline delay and achieving zero-cycle latency. Its internal oscillator governs conversion timing, removing external clock dependency while supporting precise 500ksps throughput.

This SAR ADC uses a 16-bit charge redistribution DAC (CDAC) with differential comparator to perform binary-search quantization against the external 2.5V reference. Input common-mode rejection exceeds 70dB, and the 45pF analog input capacitance in sample mode requires careful driver settling-enabled by the 1.25µs acquisition window and supported by recommended drivers like the LT6350.

Key Specifications

Pinout & Package

Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (Pin 17 = GND). Rated for –40°C to +85°C operating temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7960BCPZ-RL7 and ADS8860IRGET, the LTC2382IDE-16#TRPBF uniquely balances 500ksps throughput, 92dB SNR, 6.5mW power, daisy-chain capability, and 1.25µs acquisition-making it optimal for thermally sensitive, medium-speed, multi-channel industrial and portable systems where driver simplicity and power efficiency are prioritized.

Availability

LTC2382IDE-16#TRPBF is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process monitoring, and portable test equipment requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for LTC2382IDE-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 LTC2382IDE-16#TRPBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, engineered for high-speed, low-power, high-SNR data acquisition in thermally demanding and space-constrained applications.

FAQ

What is the operating temperature range for the LTC2382IDE-16#TRPBF?

The LTC2382IDE-16#TRPBF is specified for operation from –40°C to +85°C. This industrial temperature grade is confirmed in the manufacturer's ordering information table and applies to all electrical characteristics unless otherwise noted. The device maintains guaranteed performance-including ±2LSB INL max, 92dB SNR, and 500ksps throughput-across this full range, making it suitable for deployment in harsh environments such as factory floors or outdoor instrumentation.

Does the LTC2382IDE-16#TRPBF require an external reference, and what are the requirements?

Yes, the LTC2382IDE-16#TRPBF requires an external 2.4V–2.6V reference applied to the REF pins (7 and 8). The recommended part is the LTC6652-2.5, which provides 0.05% initial accuracy and 5ppm/°C drift. At 500ksps, the REF pin draws up to 495µA DC current and transient charge; therefore, a 47µF X5R ceramic capacitor (0805 size) must be placed directly at the REF pin to maintain stability and limit voltage deviation to <0.5LSB.

How does the daisy-chain mode work on the LTC2382IDE-16#TRPBF?

Daisy-chain mode is enabled by driving the CHAIN pin (1) high. In this mode, the RDL/SDI pin (12) functions as serial data input, allowing multiple LTC2382IDE-16#TRPBF devices to share one SCK and SDO line. Each device shifts its 16-bit result into the next on successive SCK edges, enabling synchronized readout of N devices with only N+1 total SPI lines. Timing is guaranteed for OVDD levels from 1.71V to 5.25V, supporting mixed-voltage systems.

What is the significance of the 1.25µs acquisition time in the LTC2382IDE-16#TRPBF?

The 1.25µs acquisition time in the LTC2382IDE-16#TRPBF is the duration the internal sampling switch remains closed to capture the analog input. This extended window-longer than typical SAR ADCs-reduces required driver bandwidth and slew rate, permitting use of lower-power, lower-cost op-amps such as the LT6350. It directly enables system-level power savings without sacrificing settling accuracy or THD performance, especially critical in battery-operated and thermally limited designs.

Can the LTC2382IDE-16#TRPBF operate with a 3.3V I/O supply while using a 2.5V VDD?

Yes, the LTC2382IDE-16#TRPBF supports independent I/O and core supplies: VDD must be 2.375V–2.625V (typically 2.5V), while OVDD can be 1.71V–5.25V (including 3.3V). This allows direct interfacing with 3.3V microcontrollers or FPGAs without level shifters. All digital timing parameters-including tSCK, tSSDISCK, and tDSDO-are tested and guaranteed across the full OVDD range, ensuring robust SPI communication at 3.3V logic levels.