Analog Devices Inc. LTC2315HTS8-12#TRMPBF

Overview

LTC2315HTS8-12#TRMPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 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, 72.6 dB SINAD at 500 kHz input, 6.4 mA supply current at 5 V/5 Msps, 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 LTC2315HTS8-12#TRMPBF datasheet, LTC2315HTS8-12#TRMPBF pinout, LTC2315HTS8-12#TRMPBF application, or LTC2315HTS8-12#TRMPBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, internal reference temperature coefficient ≤20 ppm/°C, 200 ns minimum throughput time, nap/sleep mode power states, and TSOT-23 thermal resistance (θ_JA = 195°C/W).

Technical Context

The LTC2315HTS8-12#TRMPBF implements a single-ended SAR architecture with integrated bandgap reference and reference buffer, automatically selecting 2.048 V output for VDD = 2.7–3.6 V or 4.096 V for VDD = 4.75–5.25 V. Its timing logic supports three SCK configurations-SCK-high-during-acquisition (enabling full 5 Msps), SCK-low-during-acquisition (4.86 Msps), and continuous SCK (4.86 Msps)-with 1-cycle conversion latency and MSB-first serial output on SDO.

It separates analog (VDD) and digital I/O (OVDD) supplies to enable interoperability with 1.8 V, 2.5 V, 3.3 V, or 5 V host logic while maintaining analog integrity. Nap mode retains reference bias and enables wake-up in <50 ns; sleep mode reduces supply current to 0.8 µA but requires 1.1 ms reference recovery before valid conversion.

Key Specifications

Pinout & Package

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

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 LTC2315HTS8-12#TRMPBF uniquely delivers 5 Msps throughput with internal reference, 1.8 V–5 V OVDD flexibility, and guaranteed 12-bit performance across –40°C to 125°C-making it optimal for compact, high-speed, thermally demanding systems where board space and supply simplicity are critical.

Availability

LTC2315HTS8-12#TRMPBF is available at Aetrix Electronics and suitable for high-speed data acquisition, automotive sensor interfaces, and medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2315HTS8-12#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 LTC2315HTS8-12#TRMPBF belongs to ADI's precision SAR ADC product line, designed specifically for applications demanding high speed, low power, small size, and robust operation in extreme ambient conditions.

FAQ

What is the maximum sampling rate supported by the LTC2315HTS8-12#TRMPBF?

The LTC2315HTS8-12#TRMPBF supports a maximum sampling rate of 5 Msps, achievable only when using the SCK-high-during-acquisition timing configuration with an 87.5 MHz SCK clock and minimum 40 ns acquisition time. Other timing modes yield 4.86 Msps. This rate is fully specified and guaranteed over the –40°C to 125°C operating range for the LTC2315HTS8-12#TRMPBF.

Does the LTC2315HTS8-12#TRMPBF require an external reference voltage?

No, the LTC2315HTS8-12#TRMPBF includes an integrated reference that auto-selects 2.048 V for VDD = 2.7–3.6 V or 4.096 V for VDD = 4.75–5.25 V. An external reference may be applied to the REF pin if overdriven ≥50 mV above the internal value, but it is not required. The internal reference has a maximum temperature coefficient of 20 ppm/°C, and the LTC2315HTS8-12#TRMPBF is fully characterized with it enabled.

How does nap mode differ from sleep mode in the LTC2315HTS8-12#TRMPBF?

Nap mode reduces supply current to 1.8 mA while retaining internal reference and bandgap bias, enabling wake-up and valid conversion within one SCK cycle (<50 ns). Sleep mode reduces current to 0.8 µA typical but powers down the reference buffer, requiring 1.1 ms for V_REF recovery before accurate conversion. Both modes are entered via specific CS pulse sequences and controlled entirely through the serial interface of the LTC2315HTS8-12#TRMPBF.

What digital logic voltages are compatible with the LTC2315HTS8-12#TRMPBF's SDO, SCK, and CS pins?

The SDO, SCK, and CS pins of the LTC2315HTS8-12#TRMPBF operate with logic thresholds defined by OVDD, which supports 1.71 V to 5.25 V. This allows direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V digital systems without level shifters. Input high threshold is 0.8 × OVDD; input low is 0.2 × OVDD. SDO output swing tracks OVDD, ensuring clean signal integrity across all supported logic families in the LTC2315HTS8-12#TRMPBF.

Is the LTC2315HTS8-12#TRMPBF pin-compatible with other devices in the LTC2315 family?

Yes, the LTC2315HTS8-12#TRMPBF shares identical pinout and package (8-lead TSOT-23) with all members of the LTC2315-12 and LTC2315-14 families, including LTC2315CTS8-12#TRMPBF and LTC2315ITS8-12#TRMPBF. Differences are limited to temperature grade and marking; electrical behavior, timing, and interface are functionally identical. This allows design reuse across commercial, industrial, and automotive variants of the LTC2315HTS8-12#TRMPBF.