Analog Devices Inc. DC1500A-B

Overview

LTC2392-16 from Analog Devices (acquired Linear Technology) is a 16-bit, 500ksps successive approximation register (SAR) analog-to-digital converter with ±2LSB INL max, 94dB SNR (typ), and ±4.096V fully differential input range. It operates from a single 5V supply, integrates a precision internal reference (±20ppm/°C max), and delivers no missing codes at 16 bits - ideal for high-speed medical imaging and industrial process control systems requiring wide dynamic range and low latency.

For engineers reviewing the LTC2392-16 datasheet, LTC2392-16 pinout, LTC2392-16 application, or LTC2392-16 equivalent, key selection considerations include guaranteed operation to 125°C (H-grade), dual parallel/serial interface support with zero cycle latency, 110mW power dissipation at full throughput, and compatibility with 1.8V–5V I/O logic levels for flexible host processor interfacing.

Technical Context

The LTC2392-16 employs a charge-redistribution SAR architecture with a fully differential input stage, enabling high common-mode rejection (70dB) and precise sampling of bipolar signals up to ±V_REF. Its internal oscillator eliminates external clock dependency, and conversion timing is deterministic: 1300ns conversion time with 685ns acquisition window.

It supports both offset binary and two's complement output formats via OB/2C pin, byte-swapped data ordering via BYTESWAP, and configurable serial (SDIN/SDOUT/SCLK) or parallel (D0–D15) data transfer - all with no pipeline delay and simultaneous availability of conversion result upon BUSY falling edge.

Key Specifications

Pinout & Package

Available in 48-lead 7mm × 7mm plastic QFN (UK package) and LQFP (LX package); both expose thermal pad (Pin 49) tied to GND for optimal thermal performance. Pin functions are electrically identical across packages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8860 and AD7616, the LTC2392-16 uniquely balances 500ksps throughput, integrated 4.096V reference, dual parallel/serial interface, and 110mW power in a compact 7mm × 7mm package - making it optimal for space-constrained, single-channel high-fidelity DAQ where deterministic timing and minimal BOM count are prioritized.

Availability

LTC2392-16 is available at Aetrix Electronics and suitable for medical imaging signal chains, industrial process control loops, and automated test equipment requiring stable component supply with guaranteed long-term manufacturability and extended temperature support.

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 technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2392-16 belongs to ADI's precision SAR ADC product line, engineered for applications demanding high resolution, low noise, and deterministic timing - especially where single-supply operation and integrated reference simplify system design.

FAQ

What is the maximum operating temperature grade available for the LTC2392-16?

The LTC2392-16 is offered in H-grade (LTC2392HLX-16), specified for operation from –40°C to +125°C with guaranteed performance including ±2LSB INL max and 94dB SNR. This variant uses the 48-lead LQFP package and is qualified for under-hood automotive and downhole industrial applications where ambient temperatures exceed 85°C.

Does the LTC2392-16 require an external clock source?

No, the LTC2392-16 includes an internal oscillator that sets conversion timing - eliminating external clock dependencies. The device achieves fixed 1300ns conversion time and 685ns acquisition window regardless of interface mode. External clocks are only used in serial mode for SCLK (up to 80MHz), which controls data readout timing, not conversion initiation.

Can the LTC2392-16 interface directly with a 3.3V microcontroller?

Yes - the LTC2392-16 supports 1.8V to 5V I/O voltage (OVP pin), allowing direct connection to 3.3V logic without level shifters. When OVP = 3.3V, digital outputs (D0–D15, SDOUT, BUSY) swing between 0V and 3.3V, and inputs (CS, RD, CNVST) recognize 0.8 × 3.3V = 2.64V as VIH minimum. AVP and DVP remain at 5V for analog/digital core operation.

How does the internal reference of the LTC2392-16 compare to external references in accuracy?

The LTC2392-16 internal reference provides 4.096V ±0.5% initial accuracy and ±20ppm/°C max tempco - sufficient for most industrial and medical applications. For higher precision, an external reference like LT1790-4.096 (0.05% initial, ±10ppm/°C) can be used by connecting it to REFIN and grounding REFOUT, improving full-scale error from ±0.1% to ±0.05% over temperature.

What is the purpose of the BYTESWAP pin on the LTC2392-16?

The BYTESWAP pin configures data byte ordering on the parallel interface: when low, D15–D0 appear on pins 28–9 (MSB-first); when high, upper and lower bytes are swapped so D7–D0 appear on pins 28–21 and D15–D8 on pins 16–9. This allows alignment with host processor endianness (e.g., ARM vs x86) without software byte manipulation, reducing CPU overhead in real-time systems.