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 461-4877
Référence fabricantADS7828E/250
5,91 €
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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
N° de stock RS 822-6742
Référence fabricantLTC2990IMS#PBF
5,385 €
Each (In a Pack of 2)
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Delta Sigma 4 14-bit - Differential, Single Ended Voltage Surface Mount MSOP 10 ±2LSB Serial (I2C) Single 3 to 5.5 V 3 x 3 x 0.86mm
N° de stock RS 178-9100
Référence fabricantADC0838CCWM/NOPB
3,178 €
Each (In a Tube of 36)
Unité
SAR 8 8-bit 31ksps Differential, Pseudo Differential Voltage Surface Mount SOIC W 20 - Serial (SPI/Microwire) - 5 V 12.8 x 7.47 x 2.34mm
N° de stock RS 169-0170
Référence fabricantSI8902B-A01-GS
MarqueSilicon Labs
2,638 €
Each (In a Tube of 46)
Unité
SAR 3 10-bit - - Current, Voltage Surface Mount SOIC W 16 ±1LSB Serial (SPI) Single 2.7 to 3.6 V 10.3 x 7.5 x 2.35mm
N° de stock RS 538-7172
Référence fabricantAD7490BRUZ
11,48 €
Each
Unité
SAR 16 12-bit 1000ksps Single Ended Voltage Surface Mount TSSOP 28 ±1LSB Serial (SPI/QSPI/Microwire) - 3.3 V, 5 V 9.7 x 4.4 x 1.05mm
N° de stock RS 379-2370
Référence fabricantMCP3201-BI/SN
MarqueMicrochip
2,366 €
Each (In a Pack of 5)
Unité
SAR 1 12-bit 100ksps Pseudo Differential Voltage Surface Mount SOIC 8 ±1LSB Serial (SPI) - 5 V 4.9 x 3.9 x 1.25mm
N° de stock RS 786-9881
Référence fabricantLTC2480CDD#PBF
3,66 €
Each
Unité
Delta Sigma 1 16-bit 7.5sps Differential Voltage Surface Mount DFN 10 10ppm Vref Serial (SPI/Microwire) Single 2.7 to 5.5 V 3 x 3 x 0.7mm
N° de stock RS 732-1537
Référence fabricantADS1148IPW
8,94 €
Each
Unité
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 162-7222
Référence fabricantADS1246IPW
3,873 €
Each (In a Tube of 90)
Unité
Delta Sigma 2 24-bit 2ksps Differential, Single Ended Voltage Surface Mount TSSOP 16 15ppm FSR Serial (SPI) - 3.3 V 5 x 4.4 x 1.15mm
N° de stock RS 506-1656
Référence fabricantLTC2414CGN#PBF
12,01 €
Each
Unité
Delta Sigma 8 24-bit 0.008ksps Differential, Single Ended Voltage Surface Mount SSOP 28 14ppm Vref Serial (SPI) - 3.3 V, 5 V 9.98 x 3.99 x 1.5mm
N° de stock RS 162-5792
Référence fabricantADS7822EB/250
2,523 €
Each (On a Reel of 250)
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 709-6402
Référence fabricantAD7401AYRWZ
5,85 €
Each
Unité
Delta Sigma 1 16-bit 16000ksps Single Ended Voltage Surface Mount SOIC W 16 ±46LSB Serial - 3.3 V, 5 V 10.5 x 7.6 x 2.35mm
N° de stock RS 165-4749
Référence fabricantMCP3204-BI/P
MarqueMicrochip
2,786 €
Each (In a Tube of 30)
Unité
SAR 4 12-bit 100ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 14 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
N° de stock RS 100-3821
Référence fabricantADS7844E
7,046 €
Each (In a Tube of 50)
Unité
SAR 8 12-bit 200ksps Differential, Single Ended Voltage Surface Mount SSOP 20 ±2LSB Serial (SPI) - 5 V 8.75 x 4 x 1.5mm
N° de stock RS 462-2430
Référence fabricantTLC2543CDW
11,78 €
Each
Unité
SAR 11 12-bit 66ksps Single Ended Voltage Surface Mount SOIC 20 ±1LSB Serial (SPI) - 5 V 12.8 x 7.52 x 2.35mm
N° de stock RS 379-2443
Référence fabricantMCP3204-BI/P
MarqueMicrochip
3,676 €
Each (In a Pack of 5)
Unité
SAR 4 12-bit 100ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 14 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
N° de stock RS 772-8758
Référence fabricantMCP3221A5T-I/OT
MarqueMicrochip
1,364 €
Each (On a Reel of 5)
Unité
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
N° de stock RS 378-1746
Référence fabricantADS7842E
8,85 €
Each
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 724-0328
Référence fabricantMCP3553-E/MS
MarqueMicrochip
3,57 €
Each
Unité
Delta Sigma 1 22-bit 0.06ksps Differential Voltage Surface Mount MSOP 8 6ppm FSR Serial (SPI) Single 2.7 to 5.5 V 3 x 3 x 0.95mm
N° de stock RS 459-225
Référence fabricantADS1274IPAPT
23,20 €
Each
Unité
Delta Sigma 4 24-bit 144ksps Differential, Single Ended Voltage Surface Mount HTQFP 64 ±0.001%FSR Serial (SPI) - 5 V 10 x 10 x 1mm