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 923-6911
Référence fabricantADS1115IDGST
3,306 €
Each (On a Reel of 250)
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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
N° de stock RS 709-4544
Référence fabricantADS1115IDGST
5,27 €
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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
N° de stock RS 912-8144
Référence fabricantAD7194BCPZ
9,35 €
Each (In a Tray of 490)
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Delta Sigma 8 24-bit - Single Ended Voltage Surface Mount LFCSP WQ 32 ±30LSB Serial (SPI/QSPI/Microwire) Single 2.7 to 5.25 V 5.1 x 5.1 x 0.75mm
N° de stock RS 889-5143
Référence fabricantMCP3008-I/P
MarqueMicrochip
1,543 €
Each (In a Tube of 30)
Unité
SAR 8 10-bit 200ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 16 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
N° de stock RS 669-6064
Référence fabricantMCP3008-I/P
MarqueMicrochip
2,04 €
Each (In a Pack of 2)
Unité
SAR 8 10-bit 200ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 16 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
N° de stock RS 806-5588
Référence fabricantAD7194BCPZ
12,70 €
Each
Unité
Delta Sigma 8 24-bit - Single Ended Voltage Surface Mount LFCSP WQ 32 ±30LSB Serial (SPI/QSPI/Microwire) Single 2.7 to 5.25 V 5.1 x 5.1 x 0.75mm
N° de stock RS 889-5118
Référence fabricantMCP3421A0T-E/CH
MarqueMicrochip
1,532 €
Each (On a Reel of 3000)
Unité
Delta Sigma 1 18-bit 0.004ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 35ppm FSR Serial (I2C) - 5 V 2.95 x 1.63 x 1.1mm
N° de stock RS 669-6076
Référence fabricantMCP3421A0T-E/CH
MarqueMicrochip
2,12 €
Each (In a Pack of 2)
Unité
Delta Sigma 1 18-bit 0.004ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 35ppm FSR Serial (I2C) - 5 V 2.95 x 1.63 x 1.1mm
N° de stock RS 806-5575
Référence fabricantAD7193BCPZ
10,58 €
Each
Unité
Delta Sigma 8 24-bit - Single Ended Voltage Surface Mount LFCSP WQ 32 ±30ppm FSR Serial (SPI/Microwire) Single 2.7 to 5.25 V 5.1 x 5.1 x 0.75mm
N° de stock RS 497-0206
Référence fabricantAD7477AARMZ
6,18 €
Each
Unité
SAR 1 10-bit 1000ksps 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
N° de stock RS 160-9844
Référence fabricantAD7452BRTZ-R2
5,395 €
Each (On a Reel of 250)
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SAR 1 12-bit 555ksps Differential Voltage Surface Mount SOT-23 8 ±1LSB Serial (SPI/QSPI/Microwire) Single 2.7 to 5.25 V 2.9 x 1.6 x 1.3mm
N° de stock RS 820-9735
Référence fabricantAD7452BRTZ-R2
8,25 €
Each
Unité
SAR 1 12-bit 555ksps Differential Voltage Surface Mount SOT-23 8 ±1LSB Serial (SPI/QSPI/Microwire) Single 2.7 to 5.25 V 2.9 x 1.6 x 1.3mm
N° de stock RS 709-1921
Référence fabricantADS1248IPW
9,67 €
Each
Unité
Delta Sigma 8 24-bit 2ksps Differential, Single Ended Voltage Surface Mount TSSOP 28 15ppm FSR Serial (SPI) - 3.3 V 9.7 x 4.4 x 1.15mm
N° de stock RS 923-6687
Référence fabricantADS1248IPW
8,514 €
Each (In a Tube of 50)
Unité
Delta Sigma 8 24-bit 2ksps Differential, Single Ended Voltage Surface Mount TSSOP 28 15ppm FSR Serial (SPI) - 3.3 V 9.7 x 4.4 x 1.15mm
N° de stock RS 379-2487
Référence fabricantMCP3208-BI/P
MarqueMicrochip
4,042 €
Each (In a Pack of 5)
Unité
SAR 8 12-bit 100ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 16 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
N° de stock RS 697-7088
Référence fabricantAD7714YNZ
18,69 €
Each
Unité
Delta Sigma 5 24-bit 1ksps Differential, Pseudo Differential Voltage Through Hole PDIP 24 ±0.002%FSR Serial (SPI) - 3 V, 5 V 31.75 x 6.35 x 3.3mm
N° de stock RS 522-8203
Référence fabricantAD1674JNZ
31,56 €
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SAR 1 12-bit 100ksps Single Ended Voltage Through Hole PDIP 28 ±1LSB Parallel - - 39.75 x 14.73 x 4.95mm
N° de stock RS 144-9128
Référence fabricantMCP3208-BI/P
MarqueMicrochip
3,064 €
Each (In a Tube of 30)
Unité
SAR 8 12-bit 100ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 16 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
N° de stock RS 162-6116
Référence fabricantADS1148IPW
7,70 €
Each (In a Tube of 50)
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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
N° de stock RS 100-3840
Référence fabricantADS7828E/250
5,162 €
Each (On a Reel of 250)
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SAR 8 12-bit 50ksps Differential, Pseudo Differential Voltage Surface Mount TSSOP 16 ±2LSB Serial (I2C) - 3.3 V, 5 V 5 x 4.4 x 1.15mm