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 750-6713
Tillv. art.nrADS1118IDGST
VarumärkeTexas Instruments
56,09 kr
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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-artikelnummer 921-5315
Tillv. art.nrADS1118IDGST
VarumärkeTexas Instruments
35,256 kr
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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-artikelnummer 884-6986
Tillv. art.nrLTC2452CTS8#TRMPBF
VarumärkeAnalog Devices
29,833 kr
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Delta Sigma 1 16-bit - Differential Current, Voltage Surface Mount TSOT-23 8 10LSB Serial (SPI) Single 2.7 to 5.5 V 2.9 x 1.75 x 0.9mm
RS-artikelnummer 178-8939
Tillv. art.nrLTC2452CTS8#TRMPBF
VarumärkeAnalog Devices
17,731 kr
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Delta Sigma 1 16-bit - Differential Current, Voltage Surface Mount TSOT-23 8 10LSB Serial (SPI) Single 2.7 to 5.5 V 2.9 x 1.75 x 0.9mm
RS-artikelnummer 669-6098
Tillv. art.nrMCP3425A0T-E/CH
VarumärkeMicrochip
20,635 kr
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Delta Sigma 1 16-bit 0.015ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 10ppm FSR Serial (I2C) - 5 V 3.1 x 1.8 x 1.3mm
RS-artikelnummer 538-6501
Tillv. art.nrAD7910ARMZ
VarumärkeAnalog Devices
50,97 kr
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SAR 1 10-bit 250ksps Single Ended Voltage Surface Mount MSOP 8 ±0.5LSB Serial (SPI/QSPI/Microwire) - 2.5 V, 3.3 V, 5 V 3 x 3 x 0.85mm
RS-artikelnummer 887-7287
Tillv. art.nrMCP3425A0T-E/CH
VarumärkeMicrochip
14,915 kr
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Delta Sigma 1 16-bit 0.015ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 10ppm FSR Serial (I2C) - 5 V 3.1 x 1.8 x 1.3mm
RS-artikelnummer 922-2552
Tillv. art.nrADS1100A2IDBVT
VarumärkeTexas Instruments
30,29 kr
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Delta Sigma 1 16-bit 0.128ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 ±0.013%FSR Serial (I2C) - 5 V 2.9 x 1.6 x 1.15mm
RS-artikelnummer 545-6076
Tillv. art.nrLTC1298CS8#PBF
VarumärkeAnalog Devices
114,85 kr
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SAR 2 12-bit 11.1ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±2LSB Serial - 5 V 5 x 3.99 x 1.48mm
RS-artikelnummer 629-3056
Tillv. art.nrAD7688BRMZ
VarumärkeAnalog Devices
305,42 kr
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SAR 1 16-bit 500ksps Differential Voltage Surface Mount MSOP 10 ±1.5LSB Serial (SPI/QSPI/Microwire) - 5 V 3 x 3 x 0.85mm
RS-artikelnummer 923-6911
Tillv. art.nrADS1115IDGST
VarumärkeTexas Instruments
35,256 kr
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Delta Sigma 4 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 506-1690
Tillv. art.nrLTC2433-1CMS#PBF
VarumärkeAnalog Devices
41,06 kr
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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-artikelnummer 538-6466
Tillv. art.nrAD7655ASTZ
VarumärkeAnalog Devices
196,22 kr
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SAR 4 16-bit 1000ksps Single Ended Voltage Surface Mount LQFP 48 ±6LSB Parallel, Serial - 5 V 7 x 7 x 1.4mm
RS-artikelnummer 709-4544
Tillv. art.nrADS1115IDGST
VarumärkeTexas Instruments
57,91 kr
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Delta Sigma 4 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 496-9824
Tillv. art.nrAD7927BRUZ
VarumärkeAnalog Devices
65,37 kr
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SAR 8 12-bit 200ksps Single Ended Voltage Surface Mount TSSOP 20 ±1LSB Serial (SPI/QSPI/Microwire) - 3 V, 5 V 6.5 x 4.4 x 1.05mm
RS-artikelnummer 661-9868
Tillv. art.nrADS1100A2IDBVT
VarumärkeTexas Instruments
48,20 kr
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Delta Sigma 1 16-bit 0.128ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 ±0.013%FSR Serial (I2C) - 5 V 2.9 x 1.6 x 1.15mm
RS-artikelnummer 662-0023
Tillv. art.nrADS1251U
VarumärkeTexas Instruments
122,32 kr
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Delta Sigma 1 24-bit 20ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±0.002%FSR Serial (SPI) - 5 V 4.9 x 3.91 x 1.58mm
RS-artikelnummer 922-2571
Tillv. art.nrADS1251U
VarumärkeTexas Instruments
104,426 kr
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Delta Sigma 1 24-bit 20ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±0.002%FSR Serial (SPI) - 5 V 4.9 x 3.91 x 1.58mm
RS-artikelnummer 758-9822
Tillv. art.nrAD7684BRMZ
VarumärkeAnalog Devices
131,06 kr
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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
RS-artikelnummer 703-7951
Tillv. art.nrMCP3426A0-E/MS
VarumärkeMicrochip
24,85 kr
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Delta Sigma 2 16-bit 0.015ksps Differential Voltage Surface Mount MSOP 8 10ppm FSR Serial (I2C) Single 2.7 to 5.5 V 3 x 3 x 0.95mm