Analog Devices Inc. LTC2313ITS8-12#TRPBF

Overview

LTC2313ITS8-12#TRPBF 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) 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 space-constrained, low-power systems such as handheld medical devices and battery-powered data loggers.

For engineers reviewing the LTC2313ITS8-12#TRPBF datasheet, LTC2313ITS8-12#TRPBF pinout, LTC2313ITS8-12#TRPBF application, or LTC2313ITS8-12#TRPBF equivalent, key selection considerations include guaranteed 12-bit no-missing-codes performance, nap/sleep mode 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 +85°C industrial temperature range.

Technical Context

The LTC2313ITS8-12#TRPBF implements a fully integrated SAR architecture with on-chip 2.048 V / 4.096 V reference and reference buffer, automatically selected based on VDD voltage range (2.7–3.6 V or 4.75–5.25 V). Its timing logic uses an internal oscillator to control conversion, eliminating external clock dependency for the core ADC function.

It features a dedicated OVDD pin (1.71–5.25 V) decoupled from analog VDD, enabling direct interfacing with mixed-voltage digital systems (e.g., 1.8 V FPGA I/O or 3.3 V MCU). The SDO output enters high-impedance state when CONV is high, and outputs MSB-first 12-bit data with zero cycle latency upon falling edge of CONV and subsequent SCK edges.

Key Specifications

Pinout & Package

Package: 8-lead plastic TSOT-23 (0.65 mm pitch), RoHS-compliant, lead-free finish. Exposed pad recommended for thermal and electrical grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS7953IRHBT and MAX11192ETE+, the LTC2313ITS8-12#TRPBF uniquely combines 2.5 Msps speed, integrated dual-range reference, OVDD-level shifting, and industrial temperature support in an 8-lead TSOT-23-making it optimal for compact, mixed-supply, high-fidelity acquisition where BOM reduction and autonomous power management are design priorities.

Availability

LTC2313ITS8-12#TRPBF is available at Aetrix Electronics and suitable for handheld medical terminals, battery-powered data loggers, industrial motor control interfaces, and automotive ADAS sensor signal chains requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for LTC2313ITS8-12#TRPBF 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 LTC2313-12 belongs to ADI's precision SAR ADC product line, designed specifically for high-speed, low-power, space-constrained applications demanding integrated references, wide supply flexibility, and guaranteed AC/DC performance across industrial temperatures.

FAQ

What is the maximum sampling rate supported by the LTC2313ITS8-12#TRPBF?

The LTC2313ITS8-12#TRPBF supports a maximum sampling rate of 2.5 Msps, verified across its full –40°C to +85°C operating temperature range. This rate is achievable with a minimum throughput time of 400 ns and requires an SCK frequency up to 90 MHz. At lower rates, the device automatically enters nap mode to reduce average current consumption.

Does the LTC2313ITS8-12#TRPBF require an external reference?

No, the LTC2313ITS8-12#TRPBF does not require an external reference. It integrates a factory-trimmed, low-drift reference that outputs 2.048 V when VDD is 2.7–3.6 V or 4.096 V when VDD is 4.75–5.25 V. The REF pin may be overdriven with an external reference if higher precision or custom span is needed, but internal operation is fully self-contained.

How does the nap mode and sleep mode differ in the LTC2313ITS8-12#TRPBF?

Nap mode (entered with two CONV pulses) reduces supply current to ~2 mA while retaining reference and bandgap bias, enabling wake-up and valid conversion in one cycle. Sleep mode (four CONV pulses) shuts down all bias circuitry, drawing <1 µA, but requires 1.1 ms for VREF recovery before accurate conversion. Both modes are controlled solely via the CONV pin-no SPI command needed.

Can the LTC2313ITS8-12#TRPBF interface directly with a 1.8 V microcontroller?

Yes, the LTC2313ITS8-12#TRPBF can interface directly with a 1.8 V microcontroller by connecting OVDD to 1.8 V. Its SDO output, SCK input, and CONV input are all referenced to OVDD, supporting logic levels from 1.71 V to 5.25 V. VDD remains independent (3 V or 5 V), allowing simultaneous high-precision analog conversion and low-voltage digital communication.

What is the guaranteed operating temperature range for the LTC2313ITS8-12#TRPBF?

The LTC2313ITS8-12#TRPBF is rated for industrial temperature operation from –40°C to +85°C (I-grade), with all key specifications-including INL, DNL, SINAD, THD, and reference drift-guaranteed across this full range. This qualification makes it suitable for deployment in uncontrolled environments such as factory floors, vehicle cabins, and outdoor instrumentation.