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
RS-artikelnummer 750-6713
Tillv. art.nrADS1118IDGST
VarumärkeTexas Instruments
72,94 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
RS-artikelnummer 921-5315
Tillv. art.nrADS1118IDGST
VarumärkeTexas Instruments
57,18 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
RS-artikelnummer 887-7287
Tillv. art.nrMCP3425A0T-E/CH
VarumärkeMicrochip
25,886 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
RS-artikelnummer 669-6098
Tillv. art.nrMCP3425A0T-E/CH
VarumärkeMicrochip
36,875 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
RS-artikelnummer 922-2552
Tillv. art.nrADS1100A2IDBVT
VarumärkeTexas Instruments
49,998 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
RS-artikelnummer 538-6466
Tillv. art.nrAD7655ASTZ
VarumärkeAnalog Devices
228,70 kr
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SAR 4 16-bit 1000ksps Single Ended Voltage Surface Mount LQFP 48 ±6LSB Parallel, Serial - 5 V
RS-artikelnummer 661-9868
Tillv. art.nrADS1100A2IDBVT
VarumärkeTexas Instruments
71,45 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
RS-artikelnummer 709-4544
Tillv. art.nrADS1115IDGST
VarumärkeTexas Instruments
72,94 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
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
RS-artikelnummer 923-6911
Tillv. art.nrADS1115IDGST
VarumärkeTexas Instruments
57,18 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
RS-artikelnummer 709-6727
Tillv. art.nrAD7812YRUZ
VarumärkeAnalog Devices
118,67 kr
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SAR 8 10-bit 350ksps Pseudo Differential, Single Ended Voltage Surface Mount TSSOP 20 ±1LSB Serial (SPI) - 3.3 V, 5 V
RS-artikelnummer 703-7951
Tillv. art.nrMCP3426A0-E/MS
VarumärkeMicrochip
46,39 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
RS-artikelnummer 121-8999
Tillv. art.nrADC128S102CIMT/NOPB
VarumärkeTexas Instruments
126,054 kr
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SAR 8 12-bit 1000ksps Single Ended Voltage Surface Mount TSSOP 16 ±1.2LSB Serial (SPI/QSPI/Microwire) - 3.3 V, 5 V
RS-artikelnummer 651-1966
Tillv. art.nrADC128S102CIMT/NOPB
VarumärkeTexas Instruments
113,36 kr
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SAR 8 12-bit 1000ksps Single Ended Voltage Surface Mount TSSOP 16 ±1.2LSB Serial (SPI/QSPI/Microwire) - 3.3 V, 5 V
RS-artikelnummer 121-8667
Tillv. art.nrTLC2543CN
VarumärkeTexas Instruments
158,793 kr
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SAR 11 12-bit 66ksps Single Ended Voltage Through Hole PDIP 20 ±1LSB Serial (SPI) - 5 V
RS-artikelnummer 709-4541
Tillv. art.nrADS1114IDGST
VarumärkeTexas Instruments
70,60 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
RS-artikelnummer 877-8776
Tillv. art.nrAD7921AUJZ-R2
VarumärkeAnalog Devices
74,115 kr
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SAR 2 12-bit 250ksps Single Ended Voltage Surface Mount TSOT 8 ±0.5LSB Serial (SPI/QSPI/Microwire) Single 2.35 to 5.25 V
RS-artikelnummer 639-4200
Tillv. art.nrADC121S625CIMM/NOPB
VarumärkeTexas Instruments
69,274 kr
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SAR 1 12-bit 200ksps Differential, Single Ended Voltage Surface Mount MSOP 8 ±1LSB Serial (SPI) - 5 V
RS-artikelnummer 703-7958
Tillv. art.nrMCP3426A0-E/SN
VarumärkeMicrochip
47,34 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
RS-artikelnummer 912-3001
Tillv. art.nrMCP3021A5T-E/OT
VarumärkeMicrochip
14,458 kr
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SAR 1 10-bit 22.3ksps Single Ended Voltage Surface Mount SOT-23 5 ±1LSB Serial (I2C) - 5 V