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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Omschrijving Prijs 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-stocknr. 876-7247
FabrikantnummerMCP3551-E/SN
FabrikantMicrochip
€ 2,553
Each (In a Tube of 100)
Aantal stuks
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
RS-stocknr. 835-3810
FabrikantnummerAD7091R-4BRUZ
FabrikantAnalog Devices
€ 5,54
Each
Aantal stuks
SAR 4 12-bit 1Msps Single Ended Voltage Surface Mount TSSOP 20 ±1.25LSB Serial (SPI/QSPI/Microwire) Single 2.7 to 5.25 V 6.6 x 4.5 x 1.05mm
RS-stocknr. 506-1628
FabrikantnummerLTC2402CMS#PBF
FabrikantAnalog Devices
€ 10,77
Each
Aantal stuks
Delta Sigma 2 24-bit 0.008ksps Pseudo Differential, Single Ended Voltage Surface Mount MSOP 10 15ppm Vref Serial (SPI) - 3.3 V, 5 V 3 x 3 x 0.86mm
RS-stocknr. 669-6095
FabrikantnummerMCP3424-E/ST
FabrikantMicrochip
€ 3,54
Each
Aantal stuks
Delta Sigma 4 18-bit 0.004ksps Differential, Single Ended Voltage Surface Mount TSSOP 14 35ppm FSR Serial (I2C) - 5 V 5 x 4.4 x 0.9mm
RS-stocknr. 772-8758
FabrikantnummerMCP3221A5T-I/OT
FabrikantMicrochip
€ 1,364
Each (On a Reel of 5)
Aantal stuks
SAR 1 12-bit 22.3ksps Single Ended Voltage Surface Mount SOT-23 5 ±2LSB Serial (I2C) Single 2.7 to 5.5 V 3.1 x 1.75 x 1.3mm
RS-stocknr. 889-5950
FabrikantnummerMCP3424-E/ST
FabrikantMicrochip
€ 2,819
Each (In a Tube of 96)
Aantal stuks
Delta Sigma 4 18-bit 0.004ksps Differential, Single Ended Voltage Surface Mount TSSOP 14 35ppm FSR Serial (I2C) - 5 V 5 x 4.4 x 0.9mm
RS-stocknr. 809-9317
FabrikantnummerAD7920AKSZ-500RL7
FabrikantAnalog Devices
€ 5,05
Each
Aantal stuks
SAR 1 12-bit 250ksps Single Ended Voltage Surface Mount SC-70 6 ±0.75LSB Serial (SPI/QSPI/Microwire) Single 2.35 to 5.25 V 2.2 x 1.35 x 1mm
RS-stocknr. 697-7094
FabrikantnummerAD7715ARZ-5
FabrikantAnalog Devices
€ 12,01
Each
Aantal stuks
Delta Sigma 1 16-bit 19.2ksps Differential Voltage Surface Mount SOIC W 16 ±0.002%FSR Serial (SPI) - 5 V 10.5 x 7.6 x 2.35mm
RS-stocknr. 506-1690
FabrikantnummerLTC2433-1CMS#PBF
FabrikantAnalog Devices
€ 3,85
Each
Aantal stuks
Delta Sigma 1 16-bit 0.007ksps Differential Voltage Surface Mount MSOP 10 ±1.25LSB Serial (SPI) - 3.3 V, 5 V 3 x 3 x 0.86mm
RS-stocknr. 496-9818
FabrikantnummerAD7920BRMZ
FabrikantAnalog Devices
€ 6,33
Each
Aantal stuks
SAR 1 12-bit 250ksps Single Ended Voltage Surface Mount USOIC 8 ±1.5LSB Serial (SPI/QSPI/Microwire) - 2.5 V, 3.3 V, 5 V 3 x 3 x 0.85mm
RS-stocknr. 819-5585
FabrikantnummerMCP3421A1T-E/CH
FabrikantMicrochip
€ 1,532
Each (On a Reel of 3000)
Aantal stuks
Delta Sigma 1 18-bit 328sps Differential, Single Ended Voltage Surface Mount SOT-23 6 35ppm FSR Serial (I2C) Single 2.7 to 5.5 V 3.1 x 3.2 x 1.3mm
RS-stocknr. 732-1648
FabrikantnummerADS7924IRTET
€ 2,58
Each
Aantal stuks
SAR 4 12-bit 100ksps Differential Voltage Surface Mount WQFN 16 ±1.5LSB Serial (SPI) Single 5 V 3.15 x 3.15 x 0.8mm
RS-stocknr. 703-7945
FabrikantnummerMCP3428-E/SL
FabrikantMicrochip
€ 3,17
Each
Aantal stuks
Delta Sigma 4 16-bit 0.015ksps Differential Voltage Surface Mount SOIC 14 10ppm FSR Serial (I2C) Single 2.7 to 5.5 V 8.65 x 3.9 x 1.25mm
RS-stocknr. 102-5652
FabrikantnummerADS8320EB/250
€ 7,654
Each (On a Reel of 250)
Aantal stuks
SAR 1 16-bit 100ksps Differential Voltage Surface Mount MSOP 8 ±0.012%FSR Serial (SPI) - 2.5 V, 3.3 V, 5 V 3 x 3 x 0.97mm
RS-stocknr. 774-1212
FabrikantnummerADS8028IRTJT
€ 5,79
Each
Aantal stuks
SAR 8 12-bit 1Msps Single Ended Voltage Surface Mount QFN 20 ±1LSB Serial (SPI) Single 3 V 4.15 x 4.15 x 0.75mm
RS-stocknr. 412-668
FabrikantnummerAD7705BRZ
FabrikantAnalog Devices
€ 9,17
Each
Aantal stuks
Delta Sigma 2 16-bit 0.5ksps Differential Voltage Surface Mount SOIC W 16 ±0.003%FSR Serial (SPI) - 3 V, 5 V 10.5 x 7.6 x 2.35mm
RS-stocknr. 889-6064
FabrikantnummerMCP3426A0-E/SN
FabrikantMicrochip
€ 1,676
Each (In a Tube of 100)
Aantal stuks
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-stocknr. 921-5315
FabrikantnummerADS1118IDGST
€ 3,306
Each (On a Reel of 250)
Aantal stuks
Delta Sigma 4 16-bit 860sps Differential, Single Ended Voltage Surface Mount MSOP 10 1LSB Serial (SPI) Single 3.3 V 3.1 x 3.1 x 1.1mm
RS-stocknr. 750-6713
FabrikantnummerADS1118IDGST
€ 5,26
Each
Aantal stuks
Delta Sigma 4 16-bit 860sps Differential, Single Ended Voltage Surface Mount MSOP 10 1LSB Serial (SPI) Single 3.3 V 3.1 x 3.1 x 1.1mm
RS-stocknr. 823-0076
FabrikantnummerLTC2990CMS#PBF
FabrikantAnalog Devices
€ 4,685
Each (In a Pack of 2)
Aantal stuks
- 4 14-bit - Differential, Single Ended Temperature, Voltage Surface Mount MSOP 10 2LSB Serial (I2C) Single 2.9 to 5.5 V 3 x 3 x 0.86mm