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 759-1042
製造零件編號AD7606BSTZ
TWD1,157.00
單位
SAR 8 16-bit 200ksps Single Ended Voltage Surface Mount LQFP 64 ±2LSB Parallel, Serial Single 5 V 10.2 x 10.2 x 1.45mm
RS庫存編號 889-5143
製造零件編號MCP3008-I/P
BrandMicrochip
TWD71.70
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 669-6064
製造零件編號MCP3008-I/P
BrandMicrochip
TWD84.50
/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 709-6566
製造零件編號AD7685ARMZ
TWD524.00
單位
SAR 1 16-bit 250ksps Pseudo Differential Voltage Surface Mount MSOP 10 ±6LSB Serial (SPI/QSPI/Microwire) - 2.5 V, 3.3 V, 5 V 3 x 3 x 0.85mm
RS庫存編號 661-9843
製造零件編號ADS1000A0IDBVT
TWD97.00
單位
Delta Sigma 1 12-bit 0.128ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 1LSB Serial (I2C) - 5 V 2.9 x 1.6 x 1.15mm
RS庫存編號 922-2537
製造零件編號ADS1000A0IDBVT
TWD56.30
個 (在毎卷:250)
單位
Delta Sigma 1 12-bit 0.128ksps Differential, Single Ended Voltage Surface Mount SOT-23 6 1LSB Serial (I2C) - 5 V 2.9 x 1.6 x 1.15mm
RS庫存編號 709-6531
製造零件編號AD7572AJNZ10
TWD1,383.00
單位
SAR 1 12-bit - Single Ended Voltage Through Hole PDIP 24 ±1LSB Parallel - - 31.19 x 6.61 x 3.3mm
RS庫存編號 121-9700
製造零件編號ADS7883SBDBVT
TWD120.10
個 (在毎卷:250)
單位
SAR 1 12-bit 3Msps Single Ended Voltage Surface Mount SOT-23 6 1LSB Serial (SPI) Single 3.3 V 3.05 x 1.75 x 1.3mm
RS庫存編號 817-5727
製造零件編號ADS7883SBDBVT
TWD192.00
單位
SAR 1 12-bit 3Msps Single Ended Voltage Surface Mount SOT-23 6 1LSB Serial (SPI) Single 3.3 V 3.05 x 1.75 x 1.3mm
RS庫存編號 757-8153
製造零件編號LTC2380CMS-16#PBF
TWD1,365.00
單位
SAR 1 16-bit 2Msps Differential, Single Ended Voltage Surface Mount MSOP 16 ±0.6LSB Serial (SPI) Single 2.5 V 4.039 x 3 x 0.86mm
RS庫存編號 738-6651
製造零件編號MCP3008-I/SL
BrandMicrochip
TWD80.00
/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 911-5713
製造零件編號MCP3008-I/SL
BrandMicrochip
TWD66.30
毎管:50 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 669-6082
製造零件編號MCP3423-E/UN
BrandMicrochip
TWD111.00
單位
Delta Sigma 2 18-bit 0.004ksps Differential, Single Ended Voltage Surface Mount MSOP 10 35ppm FSR Serial (I2C) - 5 V 3 x 3 x 0.85mm
RS庫存編號 889-5768
製造零件編號MCP3423-E/UN
BrandMicrochip
TWD85.40
毎管:100 個
單位
Delta Sigma 2 18-bit 0.004ksps Differential, Single Ended Voltage Surface Mount MSOP 10 35ppm FSR Serial (I2C) - 5 V 3 x 3 x 0.85mm
RS庫存編號 922-6734
製造零件編號HCPL-786J-000E
BrandBroadcom
TWD174.70
毎管:45 個
單位
Delta Sigma 1 12-bit - Single Ended Voltage Surface Mount SOIC 16 - - Single 4.5 to 5.5 V 10.31 x 7.493 x 3.505mm
RS庫存編號 734-4972
製造零件編號HCPL-786J-000E
BrandBroadcom
TWD206.00
單位
Delta Sigma 1 12 bit - Single Ended Voltage Surface Mount SOIC 16 - - Single 4.5 → 5.5 V 10.31 x 7.493 x 3.505mm
RS庫存編號 639-4200
製造零件編號ADC121S625CIMM/NOPB
TWD190.20
/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 102-5606
製造零件編號ADC121S625CIMM/NOPB
TWD88.20
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 796-8868
製造零件編號AD7091RBRMZ
TWD215.50
/個 (每包:2個)
單位
SAR 1 12-bit 1Msps Single Ended Voltage Surface Mount MSOP 10 ±1LSB Serial (SPI/QSPI/Microwire) Single 2.7 → 5.25 V 3.1 x 3.1 x 0.95mm
RS庫存編號 884-6980
製造零件編號LTC1407AIMSE#PBF
TWD678.00
單位
- 2 14-bit 3Msps Differential Current, Voltage Surface Mount MSOP 10 4LSB Serial (SPI) Single 4 V 3 x 3 x 0.86mm