Analog Devices Inc. LTC2393HLX-16#PBF

Overview

LTC2393HLX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps successive approximation register (SAR) analog-to-digital converter with ±4.096 V fully differential input range, ±2 LSB INL (max), 94.2 dB SNR (typ), and integrated 4.096 V reference. It operates from a single 5 V supply, supports 1.8 V to 5 V I/O, and delivers no missing codes at 16 bits - ideal for high-speed data acquisition in harsh thermal environments.

For engineers reviewing the LTC2393HLX-16#PBF datasheet, LTC2393HLX-16#PBF pinout, LTC2393HLX-16#PBF application, or LTC2393HLX-16#PBF equivalent, key selection criteria include guaranteed operation up to +125°C, dual parallel/serial interface support, internal conversion clock, zero-cycle latency, and low 140 mW power dissipation at full throughput.

Technical Context

The LTC2393HLX-16#PBF implements a charge-redistribution SAR architecture with a precision internal 4.096 V reference (±20 ppm/°C max tempco) and differential input sampling circuitry. Its conversion timing is governed by an internal oscillator, eliminating external clock dependency and ensuring consistent 600 ns conversion time and 385 ns acquisition time across temperature.

It supports both offset binary and two's complement output formats via OB/2C control, byte-swapped data alignment via BYTESWAP, and flexible digital interfacing with 1.8–5 V OVP-compatible I/O. The device features dedicated CNVST-triggered sample-and-hold, BUSY-driven data-ready signaling, and hardware-controlled nap/sleep power-down modes.

Key Specifications

Pinout & Package

48-lead 7 mm × 7 mm plastic LQFP package with exposed pad (GND); RoHS-compliant lead-free finish (#PBF). Pin 49 (exposed pad) must be soldered to solid ground plane for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7626BCPZ-RL7 and ADS8860IPWR, the LTC2393HLX-16#PBF uniquely combines 125°C operation, integrated 4.096 V reference, ±4.096 V input range, and dual parallel/serial interface - making it the only option for ruggedized, single-supply, high-dynamic-range data acquisition where thermal reliability and interface flexibility are non-negotiable.

Availability

LTC2393HLX-16#PBF is available at Aetrix Electronics and suitable for medical imaging systems, industrial process controllers, automotive test equipment, and high-speed ATE requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2393HLX-16#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, 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 LTC2393 family was designed specifically for high-speed, high-accuracy data acquisition in thermally demanding environments - emphasizing low noise, guaranteed monotonicity, and robust reference integration for mission-critical measurement systems.

FAQ

What is the maximum operating temperature rating for the LTC2393HLX-16#PBF?

The LTC2393HLX-16#PBF is rated for continuous operation from –40°C to +125°C ambient temperature, with junction temperature limited to 150°C. This H-grade qualification makes it suitable for under-hood automotive, industrial motor drives, and downhole instrumentation where thermal resilience is critical. The LTC2393HLX-16#PBF maintains full specification compliance - including ±2 LSB INL and 94.2 dB SNR - across this entire range.

Does the LTC2393HLX-16#PBF require an external clock for conversion timing?

No, the LTC2393HLX-16#PBF includes an internal oscillator that sets the conversion time at 600 ns, eliminating the need for an external clock source. This simplifies board layout and improves timing stability across voltage and temperature variations. External timing is only required for the serial interface SCLK (if used) and CNVST trigger - both of which are asynchronous to the internal conversion engine. The LTC2393HLX-16#PBF thus delivers deterministic, jitter-free sampling without clock distribution networks.

How does the internal reference of the LTC2393HLX-16#PBF compare to external reference options?

The LTC2393HLX-16#PBF integrates a 4.096 V reference with ±0.5% initial accuracy and ±20 ppm/°C max temperature coefficient - sufficient for most high-precision applications. When higher accuracy is needed, an external reference (e.g., LT1790-4.096) can be applied to REFIN, with REFOUT grounded and REFSENSE tied to the external reference's ground. The LTC2393HLX-16#PBF's internal buffer supports both configurations without performance degradation.

Can the LTC2393HLX-16#PBF interface directly with a 1.8 V FPGA I/O bank?

Yes, the LTC2393HLX-16#PBF supports 1.8 V to 5 V digital I/O via its OVP supply pin (Pin 18), allowing direct connection to 1.8 V FPGA I/O banks without level shifters. The device guarantees VIH ≥ 0.8 × OVP and VOL ≤ 0.2 V across temperature, ensuring robust logic-level compatibility. All digital pins (D0–D15, RD, CS, BUSY, etc.) are OVP-referenced, and the LTC2393HLX-16#PBF maintains full timing specifications at 1.8 V I/O voltage.

What power-saving modes does the LTC2393HLX-16#PBF support, and how are they controlled?

The LTC2393HLX-16#PBF offers two hardware-controlled power-down modes: Nap mode (35 mA typical supply current) and Sleep mode (≤250 μA). Both are activated by driving the PD pin (Pin 33) high. Nap mode retains reference and bias circuitry for fast wake-up (<1 μs), while Sleep mode shuts down the reference to minimize quiescent current. The LTC2393HLX-16#PBF requires no software initialization on wake-up - conversion resumes immediately after PD returns low.