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 403-923
製造零件編號MCP3204-CI/SL
BrandMicrochip
HK$29.535
/個 (每包:2個)
單位
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
RS庫存編號 770-9757
製造零件編號MCP3208-BI/SL
BrandMicrochip
HK$40.54
單位
SAR 8 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 16 ±1LSB Serial (SPI) Single 2.7 → 5.5 V 9.9 x 3.9 x 1.5mm
RS庫存編號 738-6651
製造零件編號MCP3008-I/SL
BrandMicrochip
HK$20.665
/個 (每包:2個)
單位
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
RS庫存編號 170-8171
製造零件編號ICL7107CPLZ
HK$88.788
毎管:9 個
單位
Dual Slope 1 3.5 digit 0.003ksps Differential Voltage Through Hole PDIP 40 ±1Counts - - - 53.2 x 14.73 x 4.95mm
RS庫存編號 523-8216
製造零件編號AD9220ARZ
HK$127.71
單位
Pipelined 1 12-bit 10000ksps Differential, Single Ended Voltage Surface Mount SOIC W 28 ±1.25LSB Parallel - 5 V 18.1 x 7.6 x 2.35mm
RS庫存編號 165-4833
製造零件編號MCP3201-BI/P
BrandMicrochip
HK$22.399
毎管:60 個
單位
SAR 1 12-bit 100ksps Pseudo Differential Voltage Through Hole PDIP 8 ±1LSB Serial (SPI) - 5 V 9.27 x 6.35 x 3.3mm
RS庫存編號 517-296
製造零件編號ADC122S625CIMM/NOPB
HK$57.73
單位
SAR 2 12-bit 200ksps Differential, Single Ended Voltage Surface Mount MSOP 10 ±1LSB Serial (SPI/QSPI/Microwire) - 5 V 3 x 3 x 0.86mm
RS庫存編號 697-7029
製造零件編號AD7356BRUZ
HK$153.97
單位
SAR 2 12-bit 5000ksps Differential Voltage Surface Mount TSSOP 16 ±1LSB Serial (SPI/QSPI/Microwire) - 2.5 V 5 x 4.4 x 1.05mm
RS庫存編號 403-115
製造零件編號MCP3202-CI/P
BrandMicrochip
HK$24.98
/個 (每包:2個)
單位
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
RS庫存編號 697-7076
製造零件編號AD7701ANZ
HK$358.76
單位
Delta Sigma 1 16-bit 4ksps Single Ended Voltage Through Hole PDIP 20 ±0.003%FSR Serial - - 24.51 x 7.24 x 3.43mm
RS庫存編號 732-1408
製造零件編號TLV1572ID
HK$106.20
單位
SAR - 10-bit - Differential Voltage Surface Mount SOIC 8 - Serial (SPI) Single 5 V 5 x 4 x 1.5mm
RS庫存編號 506-1527
製造零件編號LTC1867CGN#PBF
HK$163.32
單位
SAR 8 16-bit 200ksps Differential, Single Ended Voltage Surface Mount SSOP 16 ±4LSB Serial (SPI/Microwire) - 5 V 4.98 x 3.99 x 1.5mm
RS庫存編號 703-7951
製造零件編號MCP3426A0-E/MS
BrandMicrochip
HK$24.89
單位
Delta Sigma 2 16-bit 0.015ksps Differential Voltage Surface Mount MSOP 8 10ppm FSR Serial (I2C) Single 2.7 → 5.5 V 3 x 3 x 0.95mm
RS庫存編號 162-4126
製造零件編號ADC122S625CIMM/NOPB
HK$33.968
個 (在毎卷:1000)
單位
SAR 2 12-bit 200ksps Differential, Single Ended Voltage Surface Mount MSOP 10 ±1LSB Serial (SPI/QSPI/Microwire) - 5 V 3 x 3 x 0.86mm
RS庫存編號 178-4949
製造零件編號MCP3202-BI/P
BrandMicrochip
HK$21.239
毎管:60 個
單位
SAR 2 12-bit 100ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 8 ±1LSB Serial (SPI) Single 2.7 to 5.5 V 10.16 x 7.11 x 4.95mm
RS庫存編號 770-9741
製造零件編號MCP3202-BI/P
BrandMicrochip
HK$28.57
/個 (每包:2個)
單位
SAR 2 12-bit 100ksps Pseudo Differential, Single Ended Voltage Through Hole PDIP 8 ±1LSB Serial (SPI) Single 2.7 → 5.5 V 10.16 x 7.11 x 4.95mm
RS庫存編號 889-5180
製造零件編號MCP3424-E/SL
BrandMicrochip
HK$28.737
毎管:57 個
單位
Delta Sigma 4 18-bit 0.004ksps Differential, Single Ended Voltage Surface Mount SOIC 14 35ppm FSR Serial (I2C) - 5 V 8.65 x 3.9 x 1.25mm
RS庫存編號 912-6820
製造零件編號MCP3202-BI/SN
BrandMicrochip
HK$19.302
毎管:100 個
單位
SAR 2 12-bit 100ksps Pseudo Differential, Single Ended Voltage Surface Mount SOIC 8 ±1LSB Serial (SPI) Single 2.7 to 5.5 V 4.9 x 3.9 x 1.5mm
RS庫存編號 819-5588
製造零件編號MCP3202T-BI/SN
BrandMicrochip
HK$19.302
個 (在毎卷:3300)
單位
SAR 2 12-bit 100ksps Differential, Single Ended Voltage Surface Mount SOIC 8 ±1LSB Serial (SPI) Single 2.7 to 5.5 V 4.9 x 3.9 x 1.25mm