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 709-6626
Référence fabricantAD7711ANZ
40,67 €
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Delta Sigma 2 24-bit 19.5ksps Differential, Single Ended Voltage Through Hole PDIP 24 ±0.003%FSR Serial - 5 V, 10 V 31.75 x 6.35 x 3.3mm
N° de stock RS 203-4731
Référence fabricantMCP3564-E/ST
MarqueMicrochip
3,946 €
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- 4 24 bit 153.6ksps Differential - Surface Mount TSSOP, UQFN 20 - Parallel & Serial (SPI) - - -
N° de stock RS 168-4918
Référence fabricantADS8684AIDBT
10,457 €
Each (In a Tube of 50)
Unité
SAR 4 16-bit 500ksps Single Ended Voltage Surface Mount TSSOP 38 - Serial (SPI) - 3.3 V, 5 V 9.8 x 4.5 x 1.05mm
N° de stock RS 716-5823
Référence fabricantCS5361-KZZ
MarqueCirrus Logic
10,05 €
Each
Unité
Delta Sigma 2 24-bit 192ksps Differential Voltage Surface Mount TSSOP 24 - Serial Single 5 V 7.9 x 4.5 x 0.95mm
N° de stock RS 822-5705
Référence fabricantLTC2991IMS#PBF
9,91 €
Each
Unité
- 8 14-bit - Single Ended Current, Temperature, Voltage Surface Mount MSOP 16 ±2LSB Serial (I2C) Single 2.9 to 5.5 V 4.039 x 3 x 0.86mm
N° de stock RS 191-6841
Référence fabricantMAX135CPI+
16,42 €
Each
Unité
MS 1 15 bit 0.0016ksps - Analogue Through Hole DIP 28 ±2LSB Parallel Single 300 mV 37.34 x 14.16 x 4.45mm
N° de stock RS 709-6604
Référence fabricantAD7703BNZ
49,49 €
Each
Unité
Delta Sigma 1 20-bit 16ksps Single Ended Voltage Through Hole PDIP 20 ±0.002%FSR Serial (SPI) - - 7.11 x 5 x 4.57mm
N° de stock RS 412-377
Référence fabricantAD7794BRUZ
11,22 €
Each
Unité
Delta Sigma 6 24-bit 0.47ksps Differential Voltage Surface Mount TSSOP 24 ±15ppm FSR Serial (SPI) - 3.3 V, 5 V 7.8 x 4.4 x 1.05mm
N° de stock RS 709-5128
Référence fabricantAD9201ARSZ
9,73 €
Each
Unité
Pipelined 2 10-bit 20000ksps Differential, Single Ended Voltage Surface Mount SSOP 28 ±2.5LSB Parallel - 3 V 10.2 x 5.3 x 1.75mm
N° de stock RS 804-9974
Référence fabricantAD9637BCPZ-40
57,17 €
Each
Unité
Pipelined 8 12-bit 40Msps Differential, Single Ended Voltage Surface Mount LFCSP VQ 64 +1LSB Serial (LVDS) Single 1.8 V 9.1 x 9.1 x 0.95mm
N° de stock RS 190-4595
Référence fabricantMAX11606EUA+
1,98 €
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Unité
SAR 4 10 bit 94.4ksps - Analogue Surface Mount μMAX 8 ±1LSB - Single 5 to 5.5 V 3.1 x 3.1 x 0.95mm
N° de stock RS 709-6673
Référence fabricantAD7796BRUZ
6,07 €
Each
Unité
Delta Sigma 1 16-bit 0.123ksps Differential Voltage Surface Mount TSSOP 16 ±10ppm FSR Serial (SPI) - 3.3 V, 5 V 5 x 4.4 x 1.05mm
N° de stock RS 817-5736
Référence fabricantADS7884SDBVT
3,875 €
Each (In a Pack of 2)
Unité
SAR 1 10-bit 3Msps Single Ended Voltage Surface Mount SOT-23 6 0.8LSB Serial (SPI) Single 3.3 V 3.05 x 1.75 x 1.3mm
N° de stock RS 921-5030
Référence fabricantADS1256IDBT
10,14 €
Each (On a Reel of 250)
Unité
Delta Sigma 8 24-bit 30ksps Differential, Single Ended Voltage Surface Mount SSOP 28 ±0.001%FSR Serial (SPI) - 5 V 10.2 x 5.3 x 1.95mm
N° de stock RS 162-4380
Référence fabricantTLV1578CDA
8,616 €
Each (In a Tube of 46)
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SAR 8 10-bit 1250ksps Single Ended Voltage Surface Mount TSSOP 32 ±1LSB Parallel - 5 V 11 x 6.2 x 1.15mm
N° de stock RS 538-7560
Référence fabricantAD7495ARZ
11,29 €
Each
Unité
SAR 1 12-bit 1000ksps Single Ended Voltage Surface Mount SOIC 8 ±1.5LSB Serial (SPI/QSPI/Microwire) - 3.3 V, 5 V 5 x 4 x 1.5mm
N° de stock RS 412-743
Référence fabricantAD7710ARZ
34,97 €
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Delta Sigma 2 24-bit 1.028ksps Differential Voltage Surface Mount SOIC W 24 ±0.003%FSR Serial - 5 V, 10 V 15.6 x 7.6 x 2.35mm
N° de stock RS 758-9982
Référence fabricantAD7998BRUZ-1
10,15 €
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SAR 8 12-bit 188ksps Single Ended Voltage Surface Mount TSSOP 20 ±1LSB Serial (I2C) Single 2.7 to 5.5 V 6.6 x 4.5 x 1.05mm
N° de stock RS 506-1454
Référence fabricantLTC1859CG#PBF
27,87 €
Each
Unité
SAR 8 16-bit 100ksps Differential, Single Ended Voltage Surface Mount SSOP 28 ±3LSB Serial (SPI/Microwire) - 5 V 10.5 x 5.6 x 2mm
N° de stock RS 187-6183
Référence fabricantMCP33121-05-E/MS
MarqueMicrochip
2,528 €
Each (In a Tube of 100)
Unité
SAR 1 14 bit 500ksps Single Ended Single Ended Surface Mount MSOP 10 ±0.55LSB - Single 1.8 V 3 x 3 x 0.95mm