Analog Devices Inc. LTC2312HTS8-14#TRMPBF

Overview

LTC2312HTS8-14#TRMPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 500ksps successive approximation register (SAR) analog-to-digital converter in an 8-lead TSOT-23 package, operating from a single 3V or 5V supply with integrated 2.048V/4.096V reference and reference buffer. It delivers 77dB SINAD, –85dB THD, and 77.5dB SNR at 500ksps while consuming only 3.2mA (15mW at 5V), and supports –40°C to 125°C operation for high-reliability industrial and automotive data acquisition.

For engineers reviewing the LTC2312HTS8-14#TRMPBF datasheet, LTC2312HTS8-14#TRMPBF pinout, LTC2312HTS8-14#TRMPBF application, or LTC2312HTS8-14#TRMPBF equivalent, key selection criteria include guaranteed 14-bit no-missing-codes performance, nap/sleep power management modes, SPI-compatible 3-wire serial interface with 1.8V–5V OVDD compatibility, and internal reference drift ≤20ppm/°C across its full temperature range.

Technical Context

The LTC2312HTS8-14#TRMPBF implements a fully integrated SAR architecture with on-chip sample-and-hold, low-drift bandgap reference, and reference buffer-automatically selecting 2.048V output for VDD = 2.7–3.6V or 4.096V for VDD = 4.75–5.25V. Its timing logic uses an internal oscillator to guarantee fixed 1300ns conversion time and 700ns acquisition time, enabling deterministic 2000ns minimum throughput.

It features dual-supply isolation: VDD powers analog circuitry (2.7–3.6V or 4.75–5.25V), while OVDD independently supplies digital I/O (1.71–5.25V), allowing direct interfacing with 1.8V, 2.5V, 3.3V, or 5V host logic without level shifters. The SDO output enters high-impedance state when CONV is high, eliminating bus contention in multi-device systems.

Key Specifications

Pinout & Package

Package: 8-lead plastic TSOT-23 (TS8), 3.0mm × 1.6mm × 0.8mm profile, lead-free, RoHS-compliant, thermal resistance θ_JA = 195°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 14-bit SAR ADC applications.

Compared with ADS8860IDRCT and MAX11198ETE+, the LTC2312HTS8-14#TRMPBF uniquely combines 5V operation, integrated dual-range reference, TSOT-23 compactness, and guaranteed –40°C to 125°C performance-making it optimal for automotive, industrial, and portable high-reliability systems where BOM reduction and thermal robustness are critical.

Availability

LTC2312HTS8-14#TRMPBF is available at Aetrix Electronics and suitable for high-speed data acquisition, battery-powered instrumentation, and automotive sensor interfaces requiring stable component supply across extended temperature ranges.

Supply support for LTC2312HTS8-14#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 semiconductors, formed through the acquisition of Linear Technology in 2017.

The LTC2312HTS8-14#TRMPBF belongs to ADI's precision SAR ADC product line, designed specifically for space-constrained, low-power, high-temperature applications demanding metrology-grade accuracy without external support components.

FAQ

What is the maximum sampling rate of the LTC2312HTS8-14#TRMPBF?

The LTC2312HTS8-14#TRMPBF supports a guaranteed maximum sampling rate of 500ksps across its full operating temperature range (–40°C to 125°C). This rate is achieved with no cycle latency and fixed 1300ns conversion time, enabling deterministic real-time data capture for time-critical applications such as motor control feedback and power quality monitoring. The device maintains this throughput while delivering 77dB SINAD and –85dB THD at 500ksps.

Does the LTC2312HTS8-14#TRMPBF require an external reference voltage?

No, the LTC2312HTS8-14#TRMPBF does not require an external reference voltage-it integrates a low-drift (≤20ppm/°C), factory-trimmed reference that automatically outputs 2.048V when VDD is 2.7–3.6V or 4.096V when VDD is 4.75–5.25V. The REF pin functions as both output and overvoltage-capable input, and must be bypassed with a 2.2µF ceramic capacitor. This eliminates external reference ICs and reduces system cost and board area.

How does the nap mode function in the LTC2312HTS8-14#TRMPBF?

The LTC2312HTS8-14#TRMPBF automatically enters nap mode after each conversion completes, reducing supply current to ~2mA while retaining full reference and bias circuitry. Wake-up is immediate (<50ns), and the next conversion begins with full accuracy in one cycle-no re-stabilization delay. This behavior is distinct from sleep mode (<1µA, 1.1ms recovery) and optimizes power efficiency in burst-sampling applications without sacrificing timing predictability.

What digital logic levels does the LTC2312HTS8-14#TRMPBF support on its serial interface?

The LTC2312HTS8-14#TRMPBF supports 1.8V, 2.5V, 3V, and 5V logic levels on its SDO, SCK, and CONV pins via the dedicated OVDD supply (1.71–5.25V). This allows direct interfacing with diverse host processors-including 1.8V microcontrollers, 2.5V FPGAs, and 3.3V DSPs-without level-shifting circuitry. Logic thresholds are defined as VIH = 0.8 × OVDD and VIL = 0.2 × OVDD, ensuring robust noise margins across all supported voltages.

Is the LTC2312HTS8-14#TRMPBF pin-compatible with other members of the LTC2312 family?

Yes, the LTC2312HTS8-14#TRMPBF is pin-compatible with the entire LTC2312-14 and LTC2312-12 families in the 8-lead TSOT-23 package, including LTC2312CTS8-14#TRMPBF and LTC2312ITS8-14#TRMPBF. All share identical pinout, electrical interface, and timing behavior-the only differences are temperature grade (H = –40°C to 125°C) and part marking. This enables drop-in replacement across commercial, industrial, and extended-temperature designs.