Analog Devices Inc. DC1501A-B

Overview

LTC2392-16 from Analog Devices (formerly Linear Technology) is a 16-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with ±4.096V fully differential input range, ±2LSB INL (max), 94dB SNR (typ), and integrated 4.096V reference. It operates from a single 5V supply and supports both parallel and serial interfaces, making it suitable for high-speed data acquisition in medical imaging and industrial process control systems.

For engineers reviewing the LTC2392-16 datasheet, LTC2392-16 pinout, LTC2392-16 application, or LTC2392-16 equivalent, key selection considerations include its guaranteed 16-bit no-missing-codes performance, internal reference accuracy (±0.5% initial, ±20ppm/°C max), 110mW power dissipation at full throughput, and dual-interface flexibility without pipeline delay.

Technical Context

The LTC2392-16 employs a charge-redistribution capacitor DAC architecture with differential comparator and internal oscillator-controlled conversion timing. Its acquisition time is 685ns and conversion time is 1300ns, enabling true 500ksps throughput with zero cycle latency in both interface modes.

It features dual-reference support: internal 4.096V reference (2.6kΩ output impedance, 85kΩ input impedance) or external reference up to 4.096V, with REFSENSE for Kelvin sensing. The OB/2C and BYTESWAP pins configure output data format (offset binary/two's complement) and byte ordering for seamless integration with FPGA or microcontroller buses.

Key Specifications

Pinout & Package

Available in 48-lead 7mm × 7mm plastic QFN (UK package) and LQFP (LX package), both with exposed thermal pad (Pin 49 = GND). All GND pins must connect to solid ground plane; exposed pad requires soldering to PCB ground for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7626BCPZ and ADS8860IPWR, the LTC2392-16 uniquely balances 500ksps throughput, integrated 4.096V reference, dual parallel/serial interface, and –40°C to 125°C H-grade availability - making it optimal for space-constrained, thermally demanding industrial and medical systems needing minimal external components.

Availability

LTC2392-16 is available at Aetrix Electronics and suitable for medical imaging, industrial process control, and high-speed data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2392-16 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 semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2392-16 belongs to ADI's precision SAR ADC product line, engineered for applications demanding high dynamic range, low latency, and guaranteed DC accuracy without calibration - especially where single-supply operation and integrated reference simplify system design.

FAQ

What is the maximum operating temperature range supported by the LTC2392-16?

The LTC2392-16 is offered in three temperature grades: C-grade (0°C to 70°C), I-grade (–40°C to 85°C), and H-grade (–40°C to 125°C). The H-grade variant (e.g., LTC2392HLX-16) is fully specified and guaranteed to operate up to +125°C junction temperature, with θ_JA = 55°C/W for the LQFP package.

Does the LTC2392-16 require an external clock source for conversion timing?

No, the LTC2392-16 includes an internal oscillator that sets the conversion time, eliminating the need for an external clock. This simplifies system timing design and reduces component count. External clocks are only used in serial interface mode for SCLK (data transfer), not for core conversion timing.

Can the LTC2392-16 operate with a 3.3V digital I/O supply?

Yes - the OVP pin accepts 1.8V to 5V, allowing direct interface with 3.3V logic families. When OVP = 3.3V, digital outputs swing between 0.2V (low) and 3.1V (high), and inputs recognize VIH ≥ 2.4V and VIL ≤ 0.5V, ensuring robust compatibility with standard 3.3V CMOS interfaces.

How does the BYTESWAP function affect data output on the LTC2392-16?

When BYTESWAP = low, D15–D0 appear on Pins 28–9 (MSB-first order). When BYTESWAP = high, the upper and lower bytes are swapped: D7–D0 appear on Pins 28–21, and D15–D8 appear on Pins 16–9. This matches little-endian byte ordering expected by many microcontrollers and FPGAs without software reordering.

Is the internal reference of the LTC2392-16 suitable for precision metrology applications?

The internal reference provides ±0.5% initial accuracy and ±20ppm/°C max drift - sufficient for many industrial and medical applications. For metrology-grade accuracy, an external reference like the LT1790-4.096 (±0.05%, ±10ppm/°C) is recommended; the LTC2392-16 supports this via REFIN/REFSENSE with Kelvin sensing.