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庫存編號 889-5770
製造零件編號MCP3201-CI/P
BrandMicrochip
HK$19.26
毎管:60 個
單位
SAR 1 12-bit 100ksps Pseudo Differential Voltage Through Hole PDIP 8 ±2LSB Serial (SPI) - 5 V 9.27 x 6.35 x 3.3mm
RS庫存編號 379-2386
製造零件編號MCP3201-CI/P
BrandMicrochip
HK$22.554
/個 (每包:5個)
單位
SAR 1 12-bit 100ksps Pseudo Differential Voltage Through Hole PDIP 8 ±2LSB Serial (SPI) - 5 V 9.27 x 6.35 x 3.3mm
RS庫存編號 703-7949
製造零件編號MCP3427-E/UN
BrandMicrochip
HK$29.34
單位
Delta Sigma 2 16-bit 0.015ksps Differential Voltage Surface Mount MSOP 10 10ppm FSR Serial (I2C) Single 2.7 → 5.5 V 3 x 3 x 0.95mm
RS庫存編號 911-5583
製造零件編號MCP3427-E/UN
BrandMicrochip
HK$21.688
毎管:100 個
單位
Delta Sigma 2 16-bit 0.015ksps Differential Voltage Surface Mount MSOP 10 10ppm FSR Serial (I2C) Single 2.7 to 5.5 V 3 x 3 x 0.95mm
RS庫存編號 379-2370
製造零件編號MCP3201-BI/SN
BrandMicrochip
HK$24.748
/個 (每包:5個)
單位
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
RS庫存編號 165-3428
製造零件編號MCP3221A5T-E/OT
BrandMicrochip
HK$10.485
個 (在毎卷:3000)
單位
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
RS庫存編號 819-5617
製造零件編號MCP3427T-E/UN
BrandMicrochip
HK$20.213
個 (在毎卷:2500)
單位
Delta Sigma 2 16-bit 328sps Differential, Single Ended Voltage Surface Mount MSOP 10 10ppm FSR Serial (I2C) Single 2.7 to 5.5 V 3 x 3 x 0.95mm
RS庫存編號 889-5985
製造零件編號MCP3201-BI/SN
BrandMicrochip
HK$20.373
毎管:100 個
單位
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
RS庫存編號 738-6020
製造零件編號MCP3221A5T-E/OT
BrandMicrochip
HK$13.565
/個 (每包:2個)
單位
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
RS庫存編號 889-5143
製造零件編號MCP3008-I/P
BrandMicrochip
HK$18.996
毎管:30 個
單位
SAR 8 10-bit 200ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 16 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
RS庫存編號 819-5581
製造零件編號MCP3202T-CI/SN
BrandMicrochip
HK$18.155
個 (在毎卷:3300)
單位
SAR 2 12-bit 100ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±2LSB Serial (SPI) Single 2.7 to 5.5 V 4.9 x 3.9 x 1.25mm
RS庫存編號 889-5225
製造零件編號MCP3202-CI/SN
BrandMicrochip
HK$18.155
毎管:100 個
單位
SAR 2 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 8 ±2LSB Serial (SPI) - 3.3 V, 5 V 4.9 x 3.9 x 1.25mm
RS庫存編號 523-8446
製造零件編號AD7705BNZ
HK$107.77
單位
Delta Sigma 2 16-bit 0.5ksps Differential Voltage Through Hole PDIP 16 ±0.003%FSR Serial (SPI) - 3 V, 5 V 20.07 x 6.35 x 3.3mm
RS庫存編號 639-4200
製造零件編號ADC121S625CIMM/NOPB
HK$50.40
/個 (每包:5個)
單位
SAR 1 12-bit 200ksps Differential, Single Ended Voltage Surface Mount MSOP 8 ±1LSB Serial (SPI) - 5 V 3 x 3 x 0.86mm
RS庫存編號 669-6064
製造零件編號MCP3008-I/P
BrandMicrochip
HK$21.65
/個 (每包:2個)
單位
SAR 8 10-bit 200ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 16 ±1LSB Serial (SPI) - 5 V 19.05 x 6.35 x 3.3mm
RS庫存編號 102-5605
製造零件編號ADC121S021CIMF/NOPB
HK$9.583
個 (在毎卷:1000)
單位
SAR 1 12-bit 200ksps Single Ended Voltage Surface Mount SOT-23 6 ±1LSB Serial (SPI) - 3.3 V, 5 V 2.92 x 1.6 x 1.02mm
RS庫存編號 102-5606
製造零件編號ADC121S625CIMM/NOPB
HK$25.253
個 (在毎卷:1000)
單位
SAR 1 12-bit 200ksps Differential, Single Ended Voltage Surface Mount MSOP 8 ±1LSB Serial (SPI) - 5 V 3 x 3 x 0.86mm
RS庫存編號 639-4187
製造零件編號ADC121S021CIMF/NOPB
HK$19.582
/個 (每包:5個)
單位
SAR 1 12-bit 200ksps Single Ended Voltage Surface Mount SOT-23 6 ±1LSB Serial (SPI) - 3.3 V, 5 V 2.92 x 1.6 x 1.02mm
RS庫存編號 403-913
製造零件編號MCP3202-CI/SN
BrandMicrochip
HK$23.90
/個 (每包:2個)
單位
SAR 2 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 8 ±2LSB Serial (SPI) - 3.3 V, 5 V 4.9 x 3.9 x 1.25mm
RS庫存編號 159-6624
製造零件編號MCP3002-I/P
BrandMicrochip
HK$15.102
毎管:60 個
單位
SAR 2 10-bit 200ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 8 ±1LSB Serial (SPI) - 5 V 9.27 x 6.35 x 3.3mm