Analog Devices Inc. LTC2314HTS8-14#TRMPBF

Overview

LTC2314HTS8-14#TRMPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 4.5 Msps successive approximation register (SAR) analog-to-digital converter in an 8-lead TSOT-23 package, operating from –40°C to +125°C. It features an integrated 2.048 V / 4.096 V reference, 77.5 dB SNR at 500 kHz input, 6.2 mA supply current at 5 V, and SPI-compatible serial interface with 1.8 V–5 V OVDD support. It is used in high-speed data acquisition systems requiring precision, low power, and extended temperature operation.

For engineers reviewing the LTC2314HTS8-14#TRMPBF datasheet, LTC2314HTS8-14#TRMPBF pinout, LTC2314HTS8-14#TRMPBF application, or LTC2314HTS8-14#TRMPBF equivalent, key selection criteria include guaranteed 14-bit no-missing-codes performance over full temperature range, internal reference temperature coefficient ≤20 ppm/°C, nap/sleep mode power states (<1 µA sleep current), and TSOT-23 footprint compatibility with other members of the LTC2312/13/14/15 family.

Technical Context

The LTC2314HTS8-14#TRMPBF implements a fully differential SAR architecture with integrated bandgap reference and reference buffer, automatically selecting 2.048 V span for 2.7–3.6 V VDD or 4.096 V span for 4.75–5.25 V VDD. Its timing logic supports three SCK timing modes - including SCK-high-during-acquisition for full 4.5 Msps throughput - with 1-cycle conversion latency and precise aperture jitter (10 ps RMS).

It separates analog (VDD) and digital I/O (OVDD) supplies to decouple noise-sensitive sampling from logic-level interfacing. The device achieves 77 dB SINAD and –85 dB THD at 500 kHz while maintaining <1 LSB INL and DNL across –40°C to +125°C, validated per its H-grade qualification.

Key Specifications

Pinout & Package

Package: 8-lead TSOT-23 (0.65 mm pitch), 2.9 mm × 1.6 mm × 0.8 mm profile, RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8860IDRCT, LTC2314HTS8-14#TRMPBF delivers 4.5× higher throughput and integrated reference at the cost of 2-bit resolution; compared with LTC2315ITS8-12#TRMPBF, it adds 2 bits of resolution with only 10% throughput reduction, enabling better SFDR in wideband receivers.

Availability

LTC2314HTS8-14#TRMPBF is available at Aetrix Electronics and suitable for automotive radar signal acquisition, industrial motor control feedback, portable ultrasound beamforming, and uninterruptible power supply monitoring requiring stable component supply across extended temperature ranges.

Supply support for LTC2314HTS8-14#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 technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC2314-14 belongs to ADI's high-speed precision SAR ADC product line, designed specifically for applications demanding both wide bandwidth and DC accuracy in harsh thermal environments - such as automotive ADAS, industrial automation, and portable medical equipment.

FAQ

What is the operating temperature range of the LTC2314HTS8-14#TRMPBF?

The LTC2314HTS8-14#TRMPBF is rated for operation from –40°C to +125°C, meeting the requirements of automotive under-hood and industrial high-temperature applications. All specified electrical characteristics - including INL, DNL, SINAD, and timing - are guaranteed across this full range, as confirmed in the H-grade qualification test report.

Does the LTC2314HTS8-14#TRMPBF require an external reference?

No, the LTC2314HTS8-14#TRMPBF integrates a precision bandgap reference and reference buffer, automatically generating either a 2.048 V output (when VDD is 2.7–3.6 V) or 4.096 V output (when VDD is 4.75–5.25 V). An external reference may be applied to the REF pin only if overdriven ≥50 mV above the internal voltage.

How does the nap mode of the LTC2314HTS8-14#TRMPBF differ from sleep mode?

Nap mode reduces current to 1.8 mA while retaining active reference and bandgap bias, allowing wake-up and valid conversion within one SCK cycle. Sleep mode reduces current to 0.8 µA typical by shutting down reference and bandgap, requiring 1.1 ms VREF recovery before the first accurate conversion - making nap mode optimal for short idle periods and sleep for extended standby.

Can the LTC2314HTS8-14#TRMPBF interface directly with a 1.8 V microcontroller?

Yes. The LTC2314HTS8-14#TRMPBF uses a dedicated OVDD pin supporting 1.71–5.25 V, enabling direct connection to 1.8 V logic without level shifters. CS, SCK, and SDO operate at OVDD-defined thresholds, and SDO output swing tracks OVDD, ensuring robust signal integrity with low-voltage hosts.

What is the minimum acquisition time required for full 4.5 Msps operation of the LTC2314HTS8-14#TRMPBF?

The minimum acquisition time for full 4.5 Msps throughput is 40 ns, achievable only when using the SCK-high-during-acquisition timing mode (Figure 6 in datasheet). This mode requires strict adherence to t2 (SCK setup after CS↓) and t10 (CS↑ setup after 16th SCK↓) timing constraints to avoid data loss.