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 545-6492
Référence fabricantLTC1288CS8#PBF
12,98 €
Each
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SAR 2 12-bit 6.6ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±2LSB Serial - 3 V 5 x 3.99 x 1.48mm
N° de stock RS 506-1634
Référence fabricantLTC2410CGN#PBF
11,13 €
Each
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Delta Sigma 1 24-bit 0.008ksps Differential Voltage Surface Mount SSOP 16 14ppm Vref Serial (SPI) - 3.3 V, 5 V 4.98 x 3.99 x 1.5mm
N° de stock RS 738-6020
Référence fabricantMCP3221A5T-E/OT
MarqueMicrochip
1,365 €
Each (In a Pack of 2)
Unité
SAR 1 12-bit 22.3ksps Single Ended Voltage Surface Mount SOT-23 5 ±2LSB Serial (I2C) - 5 V 3.1 x 1.8 x 1.3mm
N° de stock RS 806-7792
Référence fabricantAD7466BRTZ-R2
7,19 €
Each
Unité
SAR 1 12-bit 200ksps Single Ended Voltage Surface Mount SOT-23 6 ±1.5LSB Serial (SPI/QSPI/Microwire) Single 1.6 to 3.6 V 2.9 x 1.6 x 1.3mm
N° de stock RS 877-8900
Référence fabricantAD9222ABCPZ-65
78,29 €
Each
Unité
Pipelined 8 12-bit 65Msps Differential, Single Ended Voltage Surface Mount LFCSP 64 ±1LSB Serial (LVDS) Single 1.8 V 9 x 8.75 x 0.95mm
N° de stock RS 191-3940
Référence fabricantMAX180BCPL+
42,879 €
Each (In a Tube of 10)
Unité
SAR 8 12 bit 100ksps Differential, Single Ended Differential, Single Ended Through Hole DIP 40 ±1LSB Parallel Single 4.75 to 5.25 V 52.71 x 14.61 x 4.45mm
N° de stock RS 716-5864
Référence fabricantCS5524-ASZ
MarqueCirrus Logic
9,70 €
Each
Unité
Delta Sigma 4 24-bit 617sps Differential Voltage Surface Mount SSOP 24 ±0.002%FSR Serial (SPI) Single 5 V 8.5 x 5.6 x 1.88mm
N° de stock RS 758-9875
Référence fabricantAD7862ARSZ-10
21,83 €
Each
Unité
SAR 4 12-bit 250ksps Single Ended Voltage Surface Mount SSOP 28 ±1LSB Parallel Single 5 V 10.34 x 5.38 x 1.79mm
N° de stock RS 823-2139
Référence fabricantSi8900B-A01-GS
MarqueSilicon Labs
2,45 €
Each (In a Pack of 5)
Unité
SAR 3 10-bit - - Current, Voltage Surface Mount SOIC W 16 ±1LSB Serial Single 2.7 to 3.6 V 10.3 x 7.5 x 2.35mm
N° de stock RS 192-1720
Référence fabricantMAX1300BEUG+
10,223 €
Each (In a Tube of 62)
Unité
SAR 8 16-bit 115ksps Differential, Single Ended Voltage Surface Mount TSSOP 24 ±4LSB Serial (SPI/QSPI/Microwire) Single 5 V 7.9 x 4.5 x 0.95mm
N° de stock RS 144-9085
Référence fabricantMCP3202-CI/P
MarqueMicrochip
1,787 €
Each (In a Tube of 60)
Unité
SAR 2 12-bit 100ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 8 ±2LSB Serial (SPI) - 3.3 V, 5 V 9.27 x 6.35 x 3.3mm
N° de stock RS 796-8865
Référence fabricantAD7988-5BRMZ
12,20 €
Each
Unité
SAR 1 16-bit 100ksps Pseudo Differential Voltage Surface Mount MSOP 10 ±1.25LSB Serial (SPI/QSPI/Microwire) Single 1.8 V, 2.5 V, 3 V, 5 V 3.1 x 3.1 x 0.95mm
N° de stock RS 175-7407
Référence fabricantTLA2022IRUGT
0,616 €
Each (On a Reel of 250)
Unité
Delta Sigma 1 12 bit 3.3ksps Differential Single Ended Surface Mount X2QFN 10 1LSB - Single 5.5 V 2.05 x 1.55 x 0.35mm
N° de stock RS 523-8604
Référence fabricantAD7888ARZ
9,61 €
Each
Unité
SAR 8 12-bit 125ksps Single Ended Voltage Surface Mount SOIC 16 ±2LSB Serial (SPI/QSPI/Microwire) - 3.3 V, 5 V 10 x 4 x 1.5mm
N° de stock RS 709-6875
Référence fabricantAD7858ARZ
17,40 €
Each
Unité
SAR 8 12-bit 200ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC W 24 ±1LSB Serial (SPI/QSPI/Microwire) - 5 V 15.6 x 7.6 x 2.35mm
N° de stock RS 912-3017
Référence fabricantMCP3550-50E/SN
MarqueMicrochip
2,553 €
Each (In a Tube of 100)
Unité
Delta Sigma 1 22-bit 0.013ksps Differential Voltage Surface Mount SOIC 8 6ppm FSR Serial (SPI) Single 2.7 to 5.5 V 4.9 x 3.9 x 1.25mm
N° de stock RS 197-7084
Référence fabricantADS1220IPW
8,33 €
Each
Unité
- 4 24 bit 2ksps Differential, Single Ended - Surface Mount TSSOP 16 - - - - -
N° de stock RS 538-5312
Référence fabricantAD7667ASTZ
20,99 €
Each
Unité
SAR 1 16-bit 1000ksps Pseudo Differential Voltage Surface Mount LQFP 48 ±2LSB Serial - 5 V 7 x 7 x 1.4mm
N° de stock RS 191-4755
Référence fabricantMAX186CCWP+
19,38 €
Each
Unité
SAR 8 12 bit 133ksps Differential, Single Ended Differential, Single Ended Surface Mount SOIC 20 ±1LSB - Dual, Single 5 V 13 x 7.6 x 2.35mm
N° de stock RS 851-6871
Référence fabricantLTC1864ACMS8#PBF
13,83 €
Each
Unité
SAR 1 16-bit 250ksps Differential Voltage Surface Mount MSOP 8 ±8LSB Serial (SPI) Single 5 V 3 x 3 x 0.86mm