Analogue to Digital Converters

Analogue to digital converters (ADCs) are devices that convert analogue input signals into a digital output signal, for example a sound captured from a microphone or light entering a digital camera. These analogue inputs are then converted into a digital signal output as either sound from a speaker or a picture in a camera.

ADCs sample the input signals at specific points in time which reduces the allowable bandwidth of the input signal for increased efficiency.

What does an analogue to digital converter do?

Audio analogue to digital converters captures and converts analogue sounds into digital signals using a mathematical function called quantisation. This conversion occurs periodically instead of continuing to minimise noise generation.

Video analogue to digital to converters are a high-frequency low- to medium-resolution type that is used to convert analogue video data into digital video signals such as displays on digital cameras.

General Purpose ADCs are considered the base type of ADC un of the mill ADCs are used to convert analogue signals to digital signals in equipment such as temperature sensors.

Types of analogue to digital converters

The most widely used types of ADCs are:

  • Flash - Flash ADCs are considered the fastest way to convert an analogue signal to a digital signal and are suitable for applications requiring very large bandwidths such as satellite communication, data acquisition, radar processing and sampling oscilloscopes.
  • Successive approximation - A successive approximation ADC converts continuous analogue waveform into digital using a binary search through all quantization levels before finally combining a digital output for each conversion.
  • Sigma-delta - Sigma delta ADCs converts the signal by large factors and filters the desired signal. They offer high resolution, low power consumption and are used in applications such as process control, temperature measurement and weight measurement scale devices.

Applications

Audio ADCs are widely used in applications such as:

  • Professional audio mixing consoles
  • Home theatre systems
  • Musical instruments

Video ADCs are used in:

  • Medical Imaging
  • Digital Instrumentation
  • Digital cameras

General Purpose ADCs are used primarily in applications such as:

  • Battery Operated Systems
  • Sensor Interfaces
  • Frequency measurement

...
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Beskrivning Pris Architecture Number of ADCs Resolution Sampling Rate Input Signal Type Input Type Mounting Type Package Type Pin Count Integral Nonlinearity Error Digital Interface Type Power Supply Type Typical Single Supply Voltage Dimensions
RS-artikelnummer 738-6020
Tillv. art.nrMCP3221A5T-E/OT
VarumärkeMicrochip
14,555 kr
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SAR 1 12-bit 22.3ksps Single Ended Voltage Surface Mount SOT-23 5 ±2LSB Serial (I2C) - 5 V 3.1 x 1.8 x 1.3mm
RS-artikelnummer 709-4541
Tillv. art.nrADS1114IDGST
VarumärkeTexas Instruments
29,33 kr
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Delta Sigma 1 16-bit 0.86ksps Differential, Single Ended Voltage Surface Mount VSSOP 10 1LSB Serial (I2C) - 3.3 V 3 x 3 x 1.02mm
RS-artikelnummer 804-9750
Tillv. art.nrAD9251BCPZ-40
VarumärkeAnalog Devices
307,28 kr
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Pipelined 2 14-bit 40Msps Differential Voltage Surface Mount LFCSP 64 ±1.75LSB Parallel Single 1.7 to 1.9 V 9 x 9 x 0.95mm
RS-artikelnummer 709-8919
Tillv. art.nrADS1178IPAPT
VarumärkeTexas Instruments
168,81 kr
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Delta Sigma 8 16-bit 52ksps Differential, Single Ended Voltage Surface Mount HTQFP 64 ±1LSB Serial (SPI) - 5 V 10 x 10 x 1mm
RS-artikelnummer 923-6902
Tillv. art.nrADS1114IDGST
VarumärkeTexas Instruments
35,601 kr
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Delta Sigma 1 16-bit 0.86ksps Differential, Single Ended Voltage Surface Mount VSSOP 10 1LSB Serial (I2C) - 3.3 V 3 x 3 x 1.02mm
RS-artikelnummer 403-923
Tillv. art.nrMCP3204-CI/SL
VarumärkeMicrochip
29,645 kr
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SAR 4 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 14 ±2LSB Serial (SPI) - 5 V 8.65 x 3.9 x 1.25mm
RS-artikelnummer 921-5093
Tillv. art.nrADS1178IPAPT
VarumärkeTexas Instruments
116,403 kr
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Delta Sigma 8 16-bit 52ksps Differential, Single Ended Voltage Surface Mount HTQFP 64 ±1LSB Serial (SPI) - 5 V 10 x 10 x 1mm
RS-artikelnummer 822-5948
Tillv. art.nrLTC2450IDC#TRMPBF
VarumärkeAnalog Devices
32,845 kr
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Delta Sigma 1 16-bit 30sps Single Ended Voltage Surface Mount DFN 6 10LSB Serial (SPI) Single 2.7 to 5.5 V 2 x 2 x 0.75mm
RS-artikelnummer 162-4980
Tillv. art.nrADS8344NB
VarumärkeTexas Instruments
155,208 kr
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SAR 8 16-bit 100ksps Differential, Single Ended Voltage Surface Mount SSOP 20 8LSB Serial - 3.3 V, 5 V 7.2 x 5.3 x 1.95mm
RS-artikelnummer 758-9967
Tillv. art.nrAD7991YRJZ-0500RL7
VarumärkeAnalog Devices
76,67 kr
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SAR 4 12-bit 140ksps Single Ended Voltage Surface Mount SOT-23 8 ±1LSB Serial (I2C) Single 2.7 to 5.5 V 3 x 1.7 x 1.3mm
RS-artikelnummer 709-5115
Tillv. art.nrAD9057BRSZ-40
VarumärkeAnalog Devices
75,29 kr
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Flash 1 8 bit 40Msps Single Ended Voltage Surface Mount SSOP 20 2LSB Parallel - 5 V 7.2 x 5.3 x 1.75mm
RS-artikelnummer 923-3710
Tillv. art.nrADS7828EB/250
VarumärkeTexas Instruments
62,731 kr
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SAR 8 12-bit 50ksps Differential, Pseudo Differential Voltage Surface Mount TSSOP 16 ±1LSB Serial (I2C) - 3.3 V, 5 V 5 x 4.4 x 1.15mm
RS-artikelnummer 709-6392
Tillv. art.nrAD7400YRWZ
VarumärkeAnalog Devices
69,21 kr
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Delta Sigma 1 16-bit 10000ksps Single Ended Voltage Surface Mount SOIC W 16 ±25LSB Serial - 3.3 V, 5 V 10.5 x 7.6 x 2.35mm
RS-artikelnummer 121-8667
Tillv. art.nrTLC2543CN
VarumärkeTexas Instruments
110,357 kr
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SAR 11 12-bit 66ksps Single Ended Voltage Through Hole PDIP 20 ±1LSB Serial (SPI) - 5 V 24.33 x 6.35 x 4.57mm
RS-artikelnummer 389-255
Tillv. art.nrADS7866IDBVT
VarumärkeTexas Instruments
35,30 kr
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SAR 1 12-bit 200ksps Single Ended Voltage Surface Mount SOT-23 6 ±1.5LSB Serial (SPI) - 1.8 V, 2.5 V, 3.3 V 2.9 x 1.6 x 1.15mm
RS-artikelnummer 165-3428
Tillv. art.nrMCP3221A5T-E/OT
VarumärkeMicrochip
11,612 kr
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SAR 1 12-bit 22.3ksps Single Ended Voltage Surface Mount SOT-23 5 ±2LSB Serial (I2C) - 5 V 3.1 x 1.8 x 1.3mm
RS-artikelnummer 703-7958
Tillv. art.nrMCP3426A0-E/SN
VarumärkeMicrochip
24,74 kr
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Delta Sigma 2 16-bit 0.015ksps Differential Voltage Surface Mount SOIC 8 10ppm FSR Serial (I2C) Single 2.7 to 5.5 V 4.9 x 3.9 x 1.25mm
RS-artikelnummer 461-7214
Tillv. art.nrADS8320E/250
VarumärkeTexas Instruments
108,13 kr
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SAR 1 16-bit 100ksps Differential Voltage Surface Mount MSOP 8 ±0.018%FSR Serial (SPI) Single 2.7 to 5.25 V 3.1 x 3.1 x 0.95mm
RS-artikelnummer 912-2815
Tillv. art.nrMCP3204-CI/SL
VarumärkeMicrochip
23,912 kr
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SAR 4 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 14 ±2LSB Serial (SPI) - 5 V 8.65 x 3.9 x 1.25mm
RS-artikelnummer 162-6116
Tillv. art.nrADS1148IPW
VarumärkeTexas Instruments
82,115 kr
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Delta Sigma 8 16-bit 2ksps Differential, Single Ended Voltage Surface Mount TSSOP 28 ±1LSB Serial (SPI) Dual, Single 2.7 to 5.25 V 9.8 x 4.5 x 1.05mm