LTC2498IUHF#PBF

Product Overview

Category

The LTC2498IUHF#PBF belongs to the category of analog-to-digital converters (ADCs).

Use

This product is commonly used in applications that require high-precision measurement and conversion of analog signals into digital data.

Characteristics

• High resolution: The LTC2498IUHF#PBF offers a resolution of up to 24 bits, allowing for accurate and precise measurements.
• Low noise: It features low noise performance, ensuring reliable and clean signal conversion.
• Wide input voltage range: The ADC can handle input voltages ranging from -10V to +10V, making it suitable for various applications.
• High sampling rate: With a maximum sampling rate of 1Msps, the LTC2498IUHF#PBF can capture fast-changing signals effectively.
• Low power consumption: This ADC operates at low power, making it suitable for battery-powered devices.

Package and Quantity

The LTC2498IUHF#PBF comes in a small form factor QFN package. It is available in reel packaging with a quantity of 250 units per reel.

Specifications

• Resolution: 24 bits
• Input Voltage Range: -10V to +10V
• Sampling Rate: Up to 1Msps
• Power Supply: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: QFN

Pin Configuration

The LTC2498IUHF#PBF has a total of 32 pins. Here is the detailed pin configuration:

1. VDD: Power supply voltage
2. GND: Ground
3. VIN: Analog input voltage
4. REF: Reference voltage input
5. SCK: Serial clock input
6. SDI: Serial data input
7. SDO: Serial data output
8. CS: Chip select input
9. EXVDD: External voltage reference supply
10. EXREF: External reference voltage input
11. VIO: Digital I/O voltage 12-32. Reserved

Functional Features

• Differential Input: The LTC2498IUHF#PBF supports differential input, allowing for accurate measurement of signals with common-mode noise rejection.
• Built-in Temperature Sensor: It includes an integrated temperature sensor, enabling precise temperature measurements along with analog-to-digital conversion.
• Programmable Gain Amplifier: The ADC features a programmable gain amplifier that allows users to adjust the gain according to their specific application requirements.
• SPI Interface: It utilizes a serial peripheral interface (SPI) for communication, providing easy integration with microcontrollers and other digital devices.

Advantages and Disadvantages

Advantages

• High resolution and accuracy
• Low noise performance
• Wide input voltage range
• Fast sampling rate
• Low power consumption

Disadvantages

• Relatively higher cost compared to lower-resolution ADCs
• Requires external components for proper operation

Working Principles

The LTC2498IUHF#PBF operates based on the successive approximation register (SAR) architecture. It converts analog signals into digital data by comparing the input voltage with a reference voltage and iteratively adjusting the conversion process until the desired resolution is achieved. The built-in programmable gain amplifier amplifies the input signal, enhancing the overall accuracy of the conversion.

Application Field Plans

The LTC2498IUHF#PBF finds applications in various fields, including: 1. Precision instrumentation 2. Data acquisition systems 3. Industrial automation 4. Medical equipment 5. Test and measurement devices

Alternative Models

Here are some alternative models that offer similar functionality: 1. LTC2485: 16-bit ADC with integrated temperature sensor 2. ADS1256: 24-bit ADC with low noise performance 3. MCP3424: 18-bit ADC with differential input capability

These alternative models can be considered based on specific application requirements and cost considerations.

In conclusion, the LTC2498IUHF#PBF is a high-resolution analog-to-digital converter suitable for applications that demand accurate and precise signal conversion. Its low noise, wide input voltage range, and fast sampling rate make it an excellent choice for various industries. However, it is important to consider the cost and external component requirements when selecting this ADC for a particular application.