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 Price 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
RS Stock No. 629-3056
Mfr. Part No.AD7688BRMZ
kr 311,36
Each
Units
SAR 1 16-bit 500ksps Differential Voltage Surface Mount MSOP 10 ±1.5LSB Serial (SPI/QSPI/Microwire) - 5 V 3 x 3 x 0.85mm
RS Stock No. 851-4639
Mfr. Part No.LTC2486IDE#PBF
kr 63,82
Each
Units
Delta Sigma 4 16-bit 15sps Differential Voltage Surface Mount DFN 14 20ppm Vref Serial (SPI) Single 2.7 to 5.5 V 4 x 3 x 0.75mm
RS Stock No. 145-0845
Mfr. Part No.TLC541IDW
kr 44,674
Each (In a Tube of 25)
Units
SAR 11 8-bit 40ksps Single Ended Voltage Surface Mount SOIC 20 ±0.5LSB Serial (SPI) - 5 V 12.8 x 7.52 x 2.35mm
RS Stock No. 629-3129
Mfr. Part No.AD7687BRMZ
kr 206,01
Each
Units
SAR 1 16-bit 250ksps Differential Voltage Surface Mount MSOP 10 ±1.5LSB Serial (SPI/QSPI/Microwire) - 2.5 V, 3.3 V, 5 V 3 x 3 x 0.85mm
RS Stock No. 662-0322
Mfr. Part No.TLC541IDW
kr 56,64
Each
Units
SAR 11 8-bit 40ksps Single Ended Voltage Surface Mount SOIC 20 ±0.5LSB Serial (SPI) - 5 V 12.8 x 7.52 x 2.35mm
RS Stock No. 786-9871
Mfr. Part No.LTC1864CS8#PBF
kr 130,78
Each
Units
- 1 16-bit 250ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±6.5LSB Serial (SPI/Microwire) Single 4.75 to 5.25 V 5.004 x 3.988 x 1.498mm
RS Stock No. 145-6070
Mfr. Part No.ADS1231ID
kr 49,816
Each (In a Tube of 40)
Units
Delta Sigma 1 24-bit 80sps Differential Voltage Surface Mount SOIC 16 ±8ppm Serial (SPI) Single 3 to 5.3 V 10 x 4 x 1.5mm
RS Stock No. 403-923
Mfr. Part No.MCP3204-CI/SL
BrandMicrochip
kr 30,22
Each (In a Pack of 2)
Units
SAR 4 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 14 ±2LSB Serial (SPI) - 5 V 8.65 x 3.9 x 1.25mm
RS Stock No. 761-9327
Mfr. Part No.LTC2442CG#PBF
kr 163,83
Each
Units
Delta Sigma 4 24-bit - Differential, Single Ended Voltage Surface Mount SSOP 36 10ppm Serial (SPI) Single 4.5 to 5.5 V 13.1 x 5.6 x 2mm
RS Stock No. 709-6575
Mfr. Part No.AD7685CRMZ
kr 175,36
Each
Units
SAR 1 16-bit 250ksps Pseudo Differential Voltage Surface Mount MSOP 10 ±2LSB Serial (SPI/QSPI/Microwire) - 2.5 V, 3.3 V, 5 V 3 x 3 x 0.85mm
RS Stock No. 697-7082
Mfr. Part No.AD7714YRUZ
kr 195,36
Each
Units
Delta Sigma 5 24-bit 1ksps Differential, Pseudo Differential Voltage Surface Mount TSSOP 24 ±0.002%FSR Serial (SPI) - 3 V, 5 V 7.8 x 4.4 x 1.05mm
RS Stock No. 709-8919
Mfr. Part No.ADS1178IPAPT
kr 172,09
Each
Units
Delta Sigma 8 16-bit 52ksps Differential, Single Ended Voltage Surface Mount HTQFP 64 ±1LSB Serial (SPI) - 5 V 10 x 10 x 1mm
RS Stock No. 662-0023
Mfr. Part No.ADS1251U
kr 124,69
Each
Units
Delta Sigma 1 24-bit 20ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±0.002%FSR Serial (SPI) - 5 V 4.9 x 3.91 x 1.58mm
RS Stock No. 709-6162
Mfr. Part No.AD7192BRUZ
kr 106,54
Each
Units
Delta Sigma 4 24-bit 4.8ksps Differential, Pseudo Differential Voltage Surface Mount TSSOP 24 ±30ppm FSR Serial (SPI) - 3.3 V, 5 V 7.8 x 4.4 x 1.05mm
RS Stock No. 798-9896
Mfr. Part No.AD7173-8BCPZ
kr 156,66
Each
Units
Delta Sigma 16 24-bit 31.25ksps Differential, Single Ended Voltage Surface Mount LFCSP 40 ±7.5ppm FSR Serial (I2C/SPI/QSPI/Microwire) Single 3 to 5.5 V 6.1 x 6.1 x 0.75mm
RS Stock No. 545-5124
Mfr. Part No.LTC1098CN8#PBF
kr 61,31
Each
Units
SAR 2 8-bit 33ksps Differential, Single Ended Voltage Through Hole PDIP 8 ±1LSB Serial - 5 V 10.16 x 6.48 x 3.3mm
RS Stock No. 716-5823
Mfr. Part No.CS5361-KZZ
kr 125,56
Each
Units
Delta Sigma 2 24-bit 192ksps Differential Voltage Surface Mount TSSOP 24 - Serial Single 5 V 7.9 x 4.5 x 0.95mm
RS Stock No. 912-2815
Mfr. Part No.MCP3204-CI/SL
BrandMicrochip
kr 24,377
Each (In a Tube of 57)
Units
SAR 4 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 14 ±2LSB Serial (SPI) - 5 V 8.65 x 3.9 x 1.25mm
RS Stock No. 506-3832
Mfr. Part No.LTC2400CS8#PBF
kr 121,00
Each
Units
Delta Sigma 1 24-bit 0.008ksps Single Ended Voltage Surface Mount SOIC 8 15ppm Vref Serial (SPI) - 3.3 V, 5 V 5 x 3.99 x 1.48mm
RS Stock No. 911-5713
Mfr. Part No.MCP3008-I/SL
BrandMicrochip
kr 16,775
Each (In a Tube of 50)
Units
SAR 8 10-bit 200ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 16 ±1LSB Serial (SPI) - 5 V 9.9 x 3.9 x 1.25mm