This Product Selection Guide contains information to help select products in the Analog to Digital Converters (ADC) category on DigiKey.com
Analog-to-digital converters (ADC, A/D, or A-to-D) sample an analog signal, such as a sound picked up by a microphone or the output of a sensor, into a digital signal. Typically, the digital output is a two’s complement binary number that is proportional to the input. Input types may be differential, pseudo-differential or single-ended. ADCs are selected by number of bits, sampling rate, number of inputs, interface, number of converters, and the architecture such as adaptive delta, dual slope, folding, pipelined, SAR, Sigma-Delta, or two-step.
SelectionCharacteristics
Number of Bits: Indicates data converter resolution; the width of the digital word used by a device to represent an analog quantity.
Sampling Rate (Per Second): The number of measurements per second the device is able to take.
Number of Inputs: Describes the number of analog signals that can be connected to a device for measurement. The ability of devices to accept signals in various formats (single-ended, differential, etc.) may result in multiple values being listed.
Input Type: Describes how the devices nominally are connected to the input data.
Data Interface: Describes the format of how the device communicates the data.
Configuration: Describes the internal devices and functions that is in the body of the item.
Ratio - S/H:ADC: The number of Sample & Hold amplifiers in the device divided by the number of Analog to Digital conversion cores therein. Describes device architecture and simultaneous sampling potential.
Number of A/D Converters: Indicates the number of analog-digital converter cores contained within a device. May differ from the number of analog inputs available on a device due to input multiplexing.
Architecture: Indicates the basic technique used by a device for converting between analog and digital domains, which has general implications for device performance and application suitability.
Reference Type: Indicates the source of the analog reference voltage used by a device for performing data conversion.
Voltage - Supply, Analog: Describes the permitted operating range of the supply voltage required for powering the analog portion of a mixed-signal device.
Voltage - Supply, Digital: Describes the permitted operating range of the supply voltage required for powering the digital portion of a mixed-signal device.
Features: Special features or functions the device includes.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and/or other system components.
Package / Case: Describes the footprint and type of body the item has based on a general standard.
Supplier Device Package: Describes the footprint and type of body the item has based on what the manufacturer names it.
Mounting Type: Indicates how the device is attached.
ProductExamples
| MFR PART # | NAU7802SGI |
|---|---|
| DIGI-KEY PART # | NAU7802SGI-ND |
| MANUFACTURER | Nuvoton Technology Corporation |
| DESCRIPTION | 24 Bit Analog to Digital Converter 2 Input 1 Sigma-Delta 16-SOP |
| DATASHEET | Click Here |
| MFR PART # | MCP3202T-BI/SN |
|---|---|
| DIGI-KEY PART # | MCP3202T-BI/SNTR-ND - Tape & Reel (TR) |
| MANUFACTURER | Microchip Technology |
| DESCRIPTION | 12 Bit Analog to Digital Converter 1, 2 Input 1 SAR 8-SOIC |
| DATASHEET | Click Here |
| MFR PART # | MAX11645EUA+T |
|---|---|
| DIGI-KEY PART # | MAX11645EUA+TTR-ND - Tape & Reel (TR) |
| MANUFACTURER | Analog Devices Inc./Maxim Integrated |
| DESCRIPTION | 12 Bit Analog to Digital Converter 1, 2 Input 1 SAR 8-uMAX/uSOP |
| DATASHEET | Click Here |
MediaLinks
Articles
Analog Basics – Part 1: SAR Analog-to-Digital Converters
Product Training Modules
Analog to Digital Converter
Blogs
Basics of ADC/DAC