Analog Devices Inc. LTC2313CTS8-12#TRMPBF

Overview

LTC2313CTS8-12#TRMPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 2.5 Msps successive approximation register (SAR) analog-to-digital converter in an 8-lead TSOT-23 package. It operates from a single 3V or 5V supply, integrates a low-drift (20 ppm/°C max) internal reference (2.048 V or 4.096 V), and delivers 72.6 dB SINAD and –84 dB THD at full speed-enabling high-fidelity signal acquisition in compact, battery-powered instrumentation and medical imaging systems.

For engineers reviewing the LTC2313CTS8-12#TRMPBF datasheet, LTC2313CTS8-12#TRMPBF pinout, LTC2313CTS8-12#TRMPBF application, or LTC2313CTS8-12#TRMPBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, nap/sleep power management (<1 µA sleep current), SPI-compatible 3-wire serial interface with 1.8–5 V OVDD compatibility, and operation across –40°C to 125°C for automotive and industrial deployments.

Technical Context

The LTC2313CTS8-12#TRMPBF implements a fully integrated SAR architecture with on-chip 2.048 V / 4.096 V reference and reference buffer, automatically selected based on VDD range (2.7–3.6 V or 4.75–5.25 V). Its sample-and-hold circuit achieves 153 ns acquisition time and 247 ns conversion time, enabling true 2.5 Msps throughput with zero cycle latency.

It uses a dedicated OVDD pin (1.71–5.25 V) to decouple digital I/O voltage from analog supply (VDD), supporting interoperability with 1.8 V, 2.5 V, 3.3 V, and 5 V host logic. Power states are managed via CONV pin sequencing: single pulse initiates conversion; two pulses enter nap mode (2 mA typical); four pulses enter sleep mode (<1 µA).

Key Specifications

Pinout & Package

Package: 8-lead TSOT-23 (0.65 mm pitch), 2.9 mm × 1.6 mm footprint, thermally enhanced with exposed pad (not electrically connected). RoHS-compliant, lead-free finish (Pb-free, #TRMPBF).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit SAR ADC applications.

Compared with ADS8860IDRCT and MAX11198ETE+, the LTC2313CTS8-12#TRMPBF uniquely combines 2.5 Msps speed, 5 V supply support, integrated dual-range reference, and TSOT-23 packaging-making it optimal for space-constrained, wide-temperature, mixed-voltage industrial and automotive data acquisition.

Availability

LTC2313CTS8-12#TRMPBF is available at Aetrix Electronics and suitable for high-speed data acquisition, battery-operated instrumentation, and automotive sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2313CTS8-12#TRMPBF 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 LTC2313CTS8-12#TRMPBF belongs to ADI's precision SAR ADC product line, designed specifically for compact, low-power, high-throughput applications where integration, temperature robustness, and ease of use are critical-such as portable test equipment and real-time control systems.

FAQ

What is the maximum sampling rate supported by the LTC2313CTS8-12#TRMPBF?

The LTC2313CTS8-12#TRMPBF supports a maximum sampling rate of 2.5 Msps, verified across its full operating temperature range (–40°C to 125°C) and both 3 V and 5 V supply conditions. This rate is achieved with zero cycle latency and guaranteed 12-bit no-missing-codes performance, making the LTC2313CTS8-12#TRMPBF suitable for real-time signal capture in demanding applications such as motor control and medical imaging.

Does the LTC2313CTS8-12#TRMPBF require an external reference voltage?

No, the LTC2313CTS8-12#TRMPBF includes an integrated low-drift reference that outputs either 2.048 V (when VDD is 2.7–3.6 V) or 4.096 V (when VDD is 4.75–5.25 V). The internal reference buffer eliminates the need for external reference ICs or op amps, reducing system cost and board area while maintaining ≤20 ppm/°C drift over temperature.

How does the nap mode function in the LTC2313CTS8-12#TRMPBF?

The LTC2313CTS8-12#TRMPBF enters nap mode automatically after each conversion if no further activity occurs, reducing supply current to ~2 mA. It can also be manually entered by pulsing CONV twice while holding SCK static. Nap mode retains reference buffer bias, enabling wake-up and valid conversion within one cycle (≤400 ns), unlike sleep mode which requires 1.1 ms recovery.

What digital interface voltage levels does the LTC2313CTS8-12#TRMPBF support?

The LTC2313CTS8-12#TRMPBF supports 1.8 V, 2.5 V, 3 V, and 5 V logic levels via its dedicated OVDD pin (1.71–5.25 V range). This allows direct connection to diverse host processors-including 1.8 V FPGAs, 3.3 V microcontrollers, and legacy 5 V ASICs-without level-shifting circuitry, simplifying system design and improving signal integrity.

Is the LTC2313CTS8-12#TRMPBF pin-compatible with other members of the LTC2313 family?

Yes, the LTC2313CTS8-12#TRMPBF shares identical pinout and package (8-lead TSOT-23) with all variants in the LTC2313 family, including the LTC2313ITS8-12#TRMPBF (–40°C to 85°C) and LTC2313HTS8-12#TRMPBF (–40°C to 125°C). This enables drop-in replacement across temperature grades without PCB layout changes.