Analog Devices Inc. LTC2512IDKD-24#TRPBF

Overview

LTC2512IDKD-24#TRPBF from Analog Devices (formerly Linear Technology) is a 24-bit successive approximation register (SAR) analog-to-digital converter with integrated configurable digital filter, operating from a single 2.5V supply and supporting ±VREF differential input range up to 5.1V reference. It delivers dual outputs: a 24-bit low-noise filtered code and a 22-bit no-latency composite code (14-bit differential + 8-bit common-mode), enabling simultaneous high-precision measurement and real-time control in seismic data acquisition systems.

For engineers reviewing the LTC2512IDKD-24#TRPBF datasheet, LTC2512IDKD-24#TRPBF pinout, LTC2512IDKD-24#TRPBF application, or LTC2512IDKD-24#TRPBF equivalent, key selection criteria include guaranteed 24-bit no-missing-codes performance, ±1ppm typical INL, 117dB dynamic range at 50ksps, 1.8V–5V SPI-compatible serial I/O, and synchronization capability across multiple devices via SYNC pin.

Technical Context

The LTC2512IDKD-24#TRPBF implements a charge redistribution capacitor DAC architecture with 24-bit resolution and two parallel output paths: one routed through a pin-selectable digital lowpass filter (down-sampling factors 4/8/16/32), and the other bypassing filtering for immediate 14-bit differential + 8-bit common-mode output. Its wide 0V–VREF common-mode input range simplifies front-end design for bipolar, pseudo-differential, and fully differential signals.

It features dual independent serial interfaces-SDOA/SCKA for filtered output and SDOB/SCKB for no-latency output-each with separate read-enable pins (RDLA/RDLB) and compatible with OVDD voltages from 1.71V to 5.25V. The MCLK-initiated conversion cycle includes 405–460ns conversion time and 152ns acquisition time, supporting up to 1.6Msps sampling rate.

Key Specifications

Pinout & Package

24-lead 7mm × 4mm plastic DFN package (DKD) with exposed pad (Pin 25) soldered to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS1282IPWR and AD7768-1BCPZ, the LTC2512IDKD-24#TRPBF uniquely provides concurrent 24-bit precision and 22-bit zero-latency outputs in a single chip, enabling closed-loop control and high-fidelity logging within one acquisition cycle - a capability not replicated by either alternative.

Availability

LTC2512IDKD-24#TRPBF is available at Aetrix Electronics and suitable for seismology data acquisition, energy exploration sensor systems, and automated test equipment requiring stable component supply, long-term industrial temperature qualification, and guaranteed 24-bit monotonicity.

Supply support for LTC2512IDKD-24#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, serving industrial, automotive, communications, and healthcare markets.

The LTC2512IDKD-24#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for applications demanding both high DC accuracy and real-time responsiveness - such as geophysical sensing, metrology-grade instrumentation, and synchronized multi-channel data acquisition.

FAQ

What is the maximum sampling rate supported by the LTC2512IDKD-24#TRPBF?

The LTC2512IDKD-24#TRPBF supports a maximum raw sampling rate of 1.6Msps. Its filtered output data rate depends on the selected down-sampling factor: 400ksps at DF=4, 200ksps at DF=8, 100ksps at DF=16, and 50ksps at DF=32. The no-latency 22-bit output remains available at the full 1.6Msps rate, making the LTC2512IDKD-24#TRPBF suitable for hybrid applications requiring both high-speed monitoring and high-precision logging.

Does the LTC2512IDKD-24#TRPBF require external anti-aliasing filters?

The LTC2512IDKD-24#TRPBF integrates a configurable digital lowpass filter that significantly relaxes analog anti-aliasing requirements. While a simple RC filter may still be recommended to limit broadband noise entering the ADC inputs, the digital filter's sharp roll-off eliminates the need for complex, high-order passive or active analog filters - reducing component count, board area, and phase distortion in the signal chain.

How does the dual-output architecture of the LTC2512IDKD-24#TRPBF function in practice?

The LTC2512IDKD-24#TRPBF simultaneously generates two independent outputs: a 24-bit digitally filtered code (SDOA) optimized for high SNR and dynamic range, and a 22-bit no-latency composite code (SDOB) comprising 14-bit differential + 8-bit common-mode data. These outputs use separate serial interfaces (SCKA/SDOA and SCKB/SDOB) with independent read-enable pins (RDLA/RDLB), allowing asynchronous or synchronized readout based on system timing constraints.

What is the operating temperature range of the LTC2512IDKD-24#TRPBF?

The LTC2512IDKD-24#TRPBF is rated for operation from –40°C to +85°C, meeting industrial temperature specifications. This range is confirmed in the manufacturer's ordering information table, where the "I" grade (LTC2512I-24) explicitly denotes the –40°C to +85°C range, and the DKD package variant LTC2512IDKD-24#TRPBF inherits this qualification. It is suitable for deployment in energy exploration, outdoor instrumentation, and factory automation environments.

Can multiple LTC2512IDKD-24#TRPBF devices be synchronized?

Yes, multiple LTC2512IDKD-24#TRPBF devices can be synchronized using the dedicated SYNC pin. A synchronous edge applied to SYNC aligns the phase of the internal digital filter across all connected devices, ensuring coherent sampling and consistent filter group delay - essential for multi-channel phased-array or distributed sensor systems where timing alignment directly impacts measurement accuracy.