Analog Devices Inc. LTC2312HTS8-12#WTRMPBF

Overview

LTC2312HTS8-12#WTRMPBF from Analog Devices is a 12-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 72.7dB SINAD, –84dB THD, and guaranteed no missing codes across –40°C to 125°C, targeting high-speed data acquisition in automotive and industrial systems.

For engineers reviewing the LTC2312HTS8-12#WTRMPBF datasheet, LTC2312HTS8-12#WTRMPBF pinout, LTC2312HTS8-12#WTRMPBF application, or LTC2312HTS8-12#WTRMPBF equivalent, this AEC-Q100 qualified ADC supports SPI-compatible serial interface with 1.8V–5V OVDD, nap/sleep power modes, and single-ended 0V–VREF analog input for compact, low-power, high-accuracy sampling.

Technical Context

The LTC2312HTS8-12#WTRMPBF implements a SAR architecture with internal bandgap reference, programmable 2.048V or 4.096V output depending on VDD range, and automatic nap mode entry post-conversion. Its timing logic synchronizes acquisition (600ns), conversion (1400ns), and serial output (MSB-first, no latency) via CONV-triggered SDO enable and SCK-driven bit shifting.

It features separate analog (VDD) and digital I/O (OVDD) supplies, enabling interoperability with 1.8V/2.5V/3.3V/5V host logic while maintaining analog performance. The REF pin serves as both reference output and overdrive-capable input, and GND is dedicated to analog ground return-critical for noise-sensitive 12-bit precision at 500ksps.

Key Specifications

Pinout & Package

Package: 8-lead plastic TSOT-23 (TS8), 2.9mm × 1.6mm × 0.8mm profile, lead-free, RoHS-compliant, optimized for space-constrained PCB layouts.

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 LTC2312HTS8-12#WTRMPBF uniquely combines AEC-Q100 qualification, integrated low-drift reference, nap-mode power gating, and TSOT-23 footprint - making it the only drop-in solution for space-constrained automotive and industrial 500ksps sampling where reliability and thermal efficiency are critical.

Availability

LTC2312HTS8-12#WTRMPBF is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial motor current sensing, portable ultrasound front-ends, and railway signaling data acquisition requiring stable component supply across extended temperature ranges.

Supply support for LTC2312HTS8-12#WTRMPBF 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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The LTC2312 family was designed for high-speed, low-power, precision data acquisition in space- and power-constrained environments - emphasizing integrated references, wide supply flexibility, and robust automotive qualification.

FAQ

What is the maximum sampling rate supported by the LTC2312HTS8-12#WTRMPBF?

The LTC2312HTS8-12#WTRMPBF supports a maximum sampling rate of 500ksps, verified across its full operating temperature range (–40°C to 125°C). This rate is achieved with 20MHz SCK and guarantees 72.7dB SINAD and no missing codes. At lower rates, the device automatically enters nap mode to reduce supply current to ~2mA, improving power efficiency without sacrificing timing accuracy.

Does the LTC2312HTS8-12#WTRMPBF require an external reference voltage?

No, the LTC2312HTS8-12#WTRMPBF includes an integrated reference that outputs 2.048V when VDD is 2.7–3.6V or 4.096V when VDD is 4.75–5.25V. The REF pin can also accept an external reference ≥50mV above the internal value, but external reference is optional. The internal reference has a maximum drift of 20ppm/°C and is buffered to drive 5mA loads - eliminating need for external components in most designs.

How does nap mode operate in the LTC2312HTS8-12#WTRMPBF?

Nap mode in the LTC2312HTS8-12#WTRMPBF activates automatically after each conversion completes, reducing supply current to ~2mA while retaining reference and bandgap bias. Wake-up occurs within <50ns upon next CONV rising edge, enabling immediate acquisition - unlike sleep mode which requires 1.1ms reference recovery. Nap mode is ideal for intermittent sampling at variable rates without latency penalties.

Is the LTC2312HTS8-12#WTRMPBF compatible with 1.8V digital logic?

Yes, the LTC2312HTS8-12#WTRMPBF supports 1.8V digital logic through its dedicated OVDD pin (1.71–5.25V range). When OVDD = 1.8V, SDO output swing and SCK/CONV input thresholds comply with 1.8V CMOS levels, and timing parameters including t4 (11ns) and t7 (1ns) remain fully guaranteed. This allows direct connection to 1.8V FPGAs or microcontrollers without level-shifting circuitry.

What package type and footprint does the LTC2312HTS8-12#WTRMPBF use?

The LTC2312HTS8-12#WTRMPBF uses an 8-lead plastic TSOT-23 (TS8) package measuring 2.9mm × 1.6mm × 0.8mm. It features a standard pitch of 0.65mm and exposed pad-less construction, compatible with reflow soldering per IPC/JEDEC J-STD-020. The pinout matches industry-standard TSOT-23 footprints, enabling drop-in replacement in space-constrained layouts where QFN or SOIC packages are impractical.