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The LTC2500IDKD-32 is a 32-bit oversampling ADC powered by a single 2.5V supply and supports sampling rates up to 1MHz for applications requiring high precision measurement ‌.

Technical Specification

The main specifications of LTC2500IDKD-32 include:

Resolution: 32 bits

Number of channels: 1 Channel

Interface type: SPI

Sampling ratio: 1 MS/s

Input type: Differential

Structure: SAR

Analog power supply voltage: 2.5V

Digital power supply voltage: 1.71V to 5.25V

SNR - Signal-to-Noise Ratio: 104 dB

Minimum operating temperature: -40 ° C

Maximum operating temperature: + 85 ° C

Package/Box: DFN-24

Inl-integral nonlinearity: +/- 0.5 ppm

Number of converters: 1 Converter

Pd- Power dissipation: 24 mW

Product type: ADCs-Analog to Digital Converters

Reference type: External

Reference voltage: 2.5V to 5.1V

SFDR - Stray dynamic Range: 128 dB

Shutdown: No Shutdown

SINAD - Signal-to-noise and distortion rate: 104 dB

THD - Total Harmonic distortion: -120 dB

Type: Oversampling ADC

Unit weight: 894.062 mg

Overview

The LTC2500IDKD-32 is a low-noise, low-power, high-performance 32-bit ADC with an integrated configurable digital filter. This device operates with a single 2.5V power supply and features a fully differential input range up to ±VREF, with the variation range of VREF ranging from 2.5V to 5.1V. The LTC2500IDKD-32 supports a wide common-mode range from 0V to VREF, thereby simplifying the requirements for analog signal conditioning.

The LTC2500IDKD-32 provides two output codes simultaneously, including a 32-bit digital filtering high-precision and low-noise code and a 32-bit delay-free composite code. The configurable digital filter reduces measurement noise by implementing low-pass filtering and frequency-reduced sampling on the data stream from the SAR ADC core, thus generating a 32-bit filtered output code. The 32-bit compound code consists of an out-of-range detection bit, a 24-bit code representing the differential input voltage, and a 7-bit code representing the common-mode input voltage. Each conversion cycle provides 32-bit composite code, thereby eliminating the delay cycle.

Digital filters are highly configurable (via SPI-compatible interfaces) and have many unique filter types suitable for a wide range of applications. Digital low-pass filters relax the requirements for analog anti-aliasing. The synchronization of multiple LTC2500-32 devices can be easily achieved by using the SYNC pin.

In addition, the LTC2500IDKD-32 also has the following main features:

±0.5ppm INL (typical value)

The typical value of SNR at 1Msps is 104dB

The typical value of the dynamic range at 61sps is 148dB

Ensure 32 bits and no missed codes

Configurable digital filter with synchronization function

Relaxed requirements for anti-aliasing filters

Dual-output 32-bit SAR ADC

32-bit digital filtered low-noise output

24-bit differential + 7-bit common-mode 1Msps output and out-of-range detection function

Wide input common-mode range

Ensure operation at 85°C

1.8V to 5V SPI-compatible serial I/O

Low power: 24mW (at 1Msps)

24-pin 7mm x 4mm DFN package

Application field

The LTC2500IDKD-32 is suitable for various fields that require high-precision measurement, including:

Seismology and energy exploration ‌ : For data acquisition and processing.

Automated Test equipment ‌ : providing high-precision signal conversion in industrial automation.

High-precision instruments ‌ : For instruments and meters that require high-precision measurement ‌.

For the exclusive quotation of LTC2500IDKD-32, please visit the official website of Mingjiada Electronics (www.hkmjd.com).