Analog Devices Inc. LTC2361HTS8#TRMPBF

Overview

LTC2361HTS8#TRMPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 250ksps successive-approximation ADC in an 8-lead TSOT-23 package, operating from a single 2.35V–3.6V supply with 0.75mA typical supply current at full rate and 0.1μA sleep current. It features dedicated VREF and OVDD pins, 0V–VREF analog input range (down to 1.4V full-scale), SPI/MICROWIRE-compatible serial interface, and guaranteed operation from –40°C to 125°C. It serves as a low-power, high-speed data acquisition front-end for sensor interfaces in harsh-environment industrial monitoring systems.

For engineers reviewing the LTC2361HTS8#TRMPBF datasheet, LTC2361HTS8#TRMPBF pinout, LTC2361HTS8#TRMPBF application, or LTC2361HTS8#TRMPBF equivalent, key selection criteria include its 250ksps throughput with 73dB SNR, 12-bit no-missing-codes performance, TSOT-23-8 thermal robustness, external reference flexibility, and compatibility with 1.0V–3.6V digital logic levels via OVDD.

Technical Context

The LTC2361HTS8#TRMPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, using an internal oscillator to enforce precise 250ksps sampling. Its analog input is single-ended relative to GND, with input capacitance of 4pF during conversion and 20pF between conversions - critical for driving source impedance design.

Serial communication uses a 3-wire SPI-compatible protocol: CONV initiates conversion on rising edge and enables SDO output on falling edge; SCK clocks data out MSB-first on falling edges; SDO outputs 12-bit result followed by trailing zeros. Timing guarantees include 4μs acquisition time, 3μs conversion time, and 16ns setup/hold margins for reliable interfacing with microcontrollers and FPGAs.

Key Specifications

Pinout & Package

Package: 8-lead plastic TSOT-23 (TS8), 2.9mm × 1.6mm × 0.8mm, thermal resistance θ_JA = 250°C/W, rated for 150°C junction temperature.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7816U and MAX11166ETE+, the LTC2361HTS8#TRMPBF uniquely combines 12-bit integrity, 250ksps throughput, 1.4V–VDD VREF flexibility, 1.0V–VDD OVDD logic compatibility, and AEC-Q100-relevant temperature grading - making it optimal for space-constrained, high-reliability embedded sensing.

Availability

LTC2361HTS8#TRMPBF is available at Aetrix Electronics and suitable for industrial motor control, automotive cabin sensing, precision thermocouple interfaces, and portable battery test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC2361HTS8#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, serving industrial, automotive, communications, and healthcare markets.

The LTC2361HTS8#TRMPBF belongs to ADI's legacy Linear Technology precision data acquisition portfolio, designed specifically for ultra-low-power, high-speed, small-footprint 12-bit SAR ADC applications in thermally demanding environments.

FAQ

What is the maximum sampling rate of the LTC2361HTS8#TRMPBF?

The LTC2361HTS8#TRMPBF has a maximum sampling rate of 250ksps, guaranteed across its full operating temperature range of –40°C to +125°C. This rate is enforced by an internal oscillator and supported by timing parameters including 4μs acquisition time and 3μs conversion time, ensuring deterministic throughput without external clock dependency.

Does the LTC2361HTS8#TRMPBF require an external reference voltage?

Yes, the LTC2361HTS8#TRMPBF requires an external reference voltage applied to the VREF pin (Pin 2). The reference range is 1.4V to VDD, and it directly defines the full-scale analog input range (0V to VREF). Unlike the S6-package variants, the TS8 package does not use VDD as the reference, enabling flexible scaling for low-output sensors.

Can the LTC2361HTS8#TRMPBF interface with a 1.8V microcontroller?

Yes, the LTC2361HTS8#TRMPBF can interface directly with a 1.8V microcontroller by setting OVDD (Pin 5) to 1.8V. This configures the SDO output driver to swing between 0V and 1.8V, meeting VIH/VIL thresholds of 1.8V logic families. VDD and VREF remain independent and may be set to 3.0V or 3.3V for optimal analog performance.

What is the sleep current of the LTC2361HTS8#TRMPBF, and how is it activated?

The LTC2361HTS8#TRMPBF draws 0.1μA typical supply current in sleep mode, activated automatically when CONV (Pin 8) remains high after conversion completion. During sleep, all bias circuits are disabled and only leakage currents remain. Waking occurs on the falling edge of CONV, with full acquisition achieved within 4μs (t_ACQ).

Is the LTC2361HTS8#TRMPBF pin-compatible with other members of the LTC236x family?

The LTC2361HTS8#TRMPBF shares identical pinout and package (TSOT-23-8) with LTC2360HTS8#TRMPBF and LTC2362HTS8#TRMPBF, enabling layout reuse across 100ksps/250ksps/500ksps variants. However, maximum sampling rate, supply current, and dynamic specifications differ - substitution requires verification of timing and power constraints in the target application.