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. 169-8385
Mfr. Part No.CS5343-CZZ
SGD5.891
Each (In a Tray of 96)
units
Delta Sigma 2 24-bit 96ksps Single Ended Voltage Surface Mount TSSOP 10 - Serial Single 3.3 V, 5 V 3 x 3 x 0.95mm
RS Stock No. 716-5810
Mfr. Part No.CS5343-CZZ
SGD6.56
Each
units
Delta Sigma 2 24-bit 96ksps Single Ended Voltage Surface Mount TSSOP 10 - Serial Single 3.3 V, 5 V 3 x 3 x 0.95mm
RS Stock No. 716-5860
Mfr. Part No.CS5530-ISZ
SGD9.94
Each
units
Delta Sigma 1 24-bit 3840sps Differential Voltage Surface Mount SSOP 20 ±0.003%FSR Serial (SPI) Dual, Single 5 V 7.5 x 5.6 x 1.88mm
RS Stock No. 169-8394
Mfr. Part No.CS5530-ISZ
SGD8.15
Each (In a Tube of 66)
units
Delta Sigma 1 24-bit 3840sps Differential Voltage Surface Mount SSOP 20 ±0.003%FSR Serial (SPI) Dual, Single 5 V 7.5 x 5.6 x 1.88mm
RS Stock No. 716-5864
Mfr. Part No.CS5524-ASZ
SGD16.44
Each
units
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
RS Stock No. 169-8389
Mfr. Part No.CS5361-KZZ
SGD17.619
Each (In a Tube of 62)
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. 716-5817
Mfr. Part No.CS5341-CZZ
SGD14.47
Each
units
Delta Sigma 2 24-bit 192ksps Single Ended Voltage Surface Mount TSSOP 16 - Serial Single 3.3 V, 5 V 5.1 x 4.5 x 0.95mm
RS Stock No. 716-5823
Mfr. Part No.CS5361-KZZ
SGD17.88
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. 169-8395
Mfr. Part No.CS5524-ASZ
SGD12.70
Each (In a Tube of 59)
units
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
RS Stock No. 716-5814
Mfr. Part No.CS5361-KSZ
SGD17.88
Each
units
Delta Sigma 2 24-bit 192ksps Differential Voltage Surface Mount SOIC 24 - Serial Single 5 V 15.6 x 7.6 x 2.35mm
RS Stock No. 169-8386
Mfr. Part No.CS5361-KSZ
SGD17.619
Each (In a Tube of 31)
units
Delta Sigma 2 24-bit 192ksps Differential Voltage Surface Mount SOIC 24 - Serial Single 5 V 15.6 x 7.6 x 2.35mm
RS Stock No. 169-8387
Mfr. Part No.CS5341-CZZ
SGD11.19
Each (In a Tube of 96)
units
Delta Sigma 2 24-bit 192ksps Single Ended Voltage Surface Mount TSSOP 16 - Serial Single 3.3 V, 5 V 5.1 x 4.5 x 0.95mm