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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Description Prix 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
N° de stock RS 662-0127
Référence fabricantADS8509IBDW
24,83 €
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SAR 1 16-bit 250ksps Single Ended Voltage Surface Mount SOIC 20 ±2LSB Serial (SPI) - 5 V 12.8 x 7.52 x 2.35mm
N° de stock RS 734-4972
Référence fabricantHCPL-786J-000E
MarqueBroadcom
5,74 €
Each
Unité
Delta Sigma 1 12 bit - Single Ended Voltage Surface Mount SOIC 16 - - Single 4.5 to 5.5 V 10.31 x 7.493 x 3.505mm
N° de stock RS 669-6054
Référence fabricantMCP3002-I/P
MarqueMicrochip
1,675 €
Each (In a Pack of 2)
Unité
SAR 2 10-bit 200ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 8 ±1LSB Serial (SPI) - 5 V 9.27 x 6.35 x 3.3mm
N° de stock RS 145-6070
Référence fabricantADS1231ID
4,582 €
Each (In a Tube of 40)
Unité
Delta Sigma 1 24-bit 80sps Differential Voltage Surface Mount SOIC 16 ±8ppm Serial (SPI) Single 3 to 5.3 V 10 x 4 x 1.5mm
N° de stock RS 159-6624
Référence fabricantMCP3002-I/P
MarqueMicrochip
1,254 €
Each (In a Tube of 60)
Unité
SAR 2 10-bit 200ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 8 ±1LSB Serial (SPI) - 5 V 9.27 x 6.35 x 3.3mm
N° de stock RS 461-7214
Référence fabricantADS8320E/250
10,14 €
Each
Unité
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
N° de stock RS 758-9822
Référence fabricantAD7684BRMZ
12,29 €
Each
Unité
SAR 1 16-bit 100ksps Differential Voltage Surface Mount MSOP 8 ±3LSB Serial (SPI/QSPI/Microwire) Single 2.7 to 5.5 V 3.2 x 3.2 x 0.95mm
N° de stock RS 817-5685
Référence fabricantADS1018IDGST
3,102 €
Each (In a Pack of 5)
Unité
Delta Sigma 4 12-bit 3.3ksps Differential, Single Ended Voltage Surface Mount VSSOP 10 0.5LSB Serial (SPI) Single 2 to 5.5 V 3.1 x 3.1 x 0.95mm
N° de stock RS 144-9088
Référence fabricantMCP3301-CI/P
MarqueMicrochip
1,698 €
Each (In a Tube of 60)
Unité
SAR 1 12-bit + Sign 100ksps Differential, Pseudo Differential Voltage Through Hole PDIP 8 ±2LSB Serial (SPI) - 5 V 9.27 x 6.35 x 3.3mm
N° de stock RS 145-7288
Référence fabricantADS7842E
7,445 €
Each (In a Tube of 50)
Unité
SAR 4 12-bit 200ksps Single Ended Voltage Surface Mount SSOP 28 ±2LSB Parallel - 3.3 V, 5 V 10.2 x 5.3 x 1.95mm
N° de stock RS 669-6060
Référence fabricantMCP3004-I/SL
MarqueMicrochip
1,84 €
Each (In a Pack of 2)
Unité
SAR 4 10-bit 200ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 14 ±1LSB Serial (SPI) - 5 V 8.65 x 3.9 x 1.25mm
N° de stock RS 146-0196
Référence fabricantMCP3001-I/P
MarqueMicrochip
1,166 €
Each (In a Tube of 60)
Unité
SAR 1 10-bit 200ksps Pseudo Differential Voltage Through Hole PDIP 8 ±1LSB Serial (SPI) Single 2.7 to 5.5 V 10.16 x 7.11 x 4.95mm
N° de stock RS 889-6064
Référence fabricantMCP3426A0-E/SN
MarqueMicrochip
1,676 €
Each (In a Tube of 100)
Unité
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
N° de stock RS 819-5604
Référence fabricantMCP3426A0T-E/SN
MarqueMicrochip
1,676 €
Each (On a Reel of 3300)
Unité
Delta Sigma 2 16-bit 328sps Differential, Single Ended Voltage Surface Mount SOIC 8 10ppm FSR Serial (I2C) Single 2.7 to 5.5 V 4.9 x 3.9 x 1.25mm
N° de stock RS 876-7247
Référence fabricantMCP3551-E/SN
MarqueMicrochip
2,553 €
Each (In a Tube of 100)
Unité
Delta Sigma 1 22-bit 13.75sps Differential Voltage Surface Mount SOIC 8 6ppm Serial (SPI) Single 2.7 to 5.5 V 4.9 x 3.9 x 1.5mm
N° de stock RS 921-5220
Référence fabricantADS1147IPW
6,815 €
Each (In a Tube of 70)
Unité
Delta Sigma 4 16-bit 2ksps Differential, Single Ended Voltage Surface Mount TSSOP 20 ±1LSB Serial (SPI) Dual, Single 2.7 to 5.25 V 6.6 x 4.5 x 1.05mm
N° de stock RS 817-5691
Référence fabricantADS1231ID
5,33 €
Each
Unité
Delta Sigma 1 24-bit 80sps Differential Voltage Surface Mount SOIC 16 ±8ppm Serial (SPI) Single 3 to 5.3 V 10 x 4 x 1.5mm
N° de stock RS 759-1415
Référence fabricantAD9254BCPZ-150
81,00 €
Each
Unité
Pipelined 2 14-bit 150Msps Differential Voltage Surface Mount LFCSP VQ 48 ±5LSB Parallel Single 1.8 V 7 x 7 x 0.95mm
N° de stock RS 661-9938
Référence fabricantADS7822EB/250
4,05 €
Each
Unité
SAR 1 12-bit 200ksps Pseudo Differential Voltage Surface Mount MSOP 8 ±1LSB Serial (SPI) - 2.7 V, 5 V 3 x 3 x 0.97mm
N° de stock RS 506-3876
Référence fabricantLTC2420CS8#PBF
8,40 €
Each
Unité
Delta Sigma 1 20-bit 0.008ksps Single Ended Voltage Surface Mount SOIC 8 20ppm Vref Serial (SPI) - 3.3 V, 5 V 5 x 3.99 x 1.48mm