Digital to Analogue Converters

Digital to analogue converters (also known as DACs) are devices that convert digital signals (e.g. a fixed-point binary number) into an analogue output signal (e.g. a physical quantity, such as voltage or pressure) for other devices to recognise. DACs are mostly in the audio industry, where they are used to convert digital audio signal (binary code) into an analogue signal ready for the next device or headphone amplifier to pick up. The reverse operation (analogue to digital conversion) can be performed by an ADC (analogue to digital converter). We have a curated range of DACs featuring products from well-known brands within the industry, including Analog Devices, Maxim Integrated, Microchip, Texas Instruments, and more.

What does a digital to analogue converter do?

Audio digital to analogue converters capture high-quality digital audio and convert it into a direct line level output analogue signal. An example of this is when digitally-stored music, such as an mp3 track or a CD, is converted into an analogue signal in order to be played through speakers. Video digital to analogue converters operate on a much larger scale and are high-frequency, low- to medium-resolution type converters. They are used to convert digital video data into analogue video signals, especially when using older models of monitors or televisions.

Types of digital to analogue converters

  • R-2R Ladder DACs - These converters are binary converters that use repeating cascaded resistor values R and 2R. Using R-2R improves accuracy.
  • Switched Capacitors - Switched capacitors include a parallel capacitor network.
  • Switched Resistors - Contain a parallel resistor system in which resistors are enabled or bypassed depending on the digital signal.
  • Switched Current Source - Different current sources are chosen based on the digital signal being input.

Applications

Digital to analogue converters are widely used in applications across audio and video industries, including mobile phones, televisions, music players, and telephone calls.

Converters for audio applications include:

  • Digital music systems when played through speakers or headphones
  • PC sound cards
  • ,li>Telecommunications

Video digital to analogue converters have application uses in:

  • Mobile phones
  • TVs

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    Description Price Architecture Resolution Conversion Rate Full Scale Error Integral Nonlinearity Error Number of DAC Channels Mounting Type Package Type Pin Count Maximum Settling Time Digital Interface Type Output Polarity Voltage Reference Power Supply Type
    RS Stock No. 681-1092
    Mfr. Part No.MCP4822-E/P
    BrandMicrochip
    $6.02
    Each
    units
    Resistor String 12 bit - ±2%FSR ±12LSB 2 Through Hole PDIP 8 4.5µs Serial (SPI/Microwire) Unipolar Internal Single
    RS Stock No. 889-5831
    Mfr. Part No.MCP4822-E/P
    BrandMicrochip
    $3.964
    Each (In a Tube of 60)
    units
    Resistor String 12 bit - ±2%FSR ±12LSB 2 Through Hole PDIP 8 4.5µs Serial (SPI/Microwire) Unipolar Internal Single
    RS Stock No. 491-5625
    Mfr. Part No.CS4398-CZZ
    $19.25
    Each
    units
    Delta Sigma 24 bit 216ksps - - 2 Surface Mount TSSOP 28 - Serial Bipolar External, Internal Single
    RS Stock No. 169-8303
    Mfr. Part No.CS4398-CZZ
    $15.919
    Each (In a Tube of 50)
    units
    Delta Sigma 24 bit 216ksps - - 2 Surface Mount TSSOP 28 - Serial Bipolar External, Internal Single
    RS Stock No. 889-5847
    Mfr. Part No.MCP4726A0T-E/CH
    BrandMicrochip
    $1.155
    Each (On a Reel of 3000)
    units
    Resistor String 12 bit - 82LSB 14.5LSB 1 Surface Mount SOT-23 6 6µs Serial (I2C) Unipolar External Single
    RS Stock No. 759-0787
    Mfr. Part No.AD5627RBRMZ-1
    $10.32
    Each
    units
    Resistor String 12 bit 333ksps ±1%FSR ±1LSB 2 Surface Mount MSOP 10 4.5µs Serial Bipolar External, Internal Single
    RS Stock No. 738-7121
    Mfr. Part No.MCP4726A0T-E/CH
    BrandMicrochip
    $1.608
    Each (In a Pack of 5)
    units
    Resistor String 12 bit - 82LSB 14.5LSB 1 Surface Mount SOT-23 6 6µs Serial (I2C) Unipolar External Single
    RS Stock No. 879-3255
    Mfr. Part No.MCP47FEB22A0-E/ST
    BrandMicrochip
    $3.704
    Each (In a Pack of 5)
    units
    Resistor String 12 bit - 4.5LSB ±0.5LSB 2 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 770-9798
    Mfr. Part No.MCP4821-E/P
    BrandMicrochip
    $4.26
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - 12LSB ±12LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 162-8162
    Mfr. Part No.DSD1794ADB
    $35.28
    Each (In a Tube of 47)
    units
    Delta Sigma 24 bit 192ksps ±6%FSR - 2 Surface Mount SOIC 28 - Serial (SPI) Bipolar Internal Single
    RS Stock No. 165-2133
    Mfr. Part No.MCP4821-E/P
    BrandMicrochip
    $3.027
    Each (In a Tube of 60)
    units
    Resistor String 12 bit - 12LSB ±12LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 145-9360
    Mfr. Part No.MCP4812-E/P
    BrandMicrochip
    $2.784
    Each (In a Tube of 60)
    units
    Resistor String 10 bit - ±2%FSR 3.5LSB 2 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 145-9395
    Mfr. Part No.MCP47FEB22A0-E/ST
    BrandMicrochip
    $2.888
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - 4.5LSB ±0.5LSB 2 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 726-3898
    Mfr. Part No.MCP4812-E/P
    BrandMicrochip
    $3.68
    Each (In a Pack of 2)
    units
    Resistor String 10 bit - ±2%FSR 3.5LSB 2 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 889-5531
    Mfr. Part No.MCP4921-E/P
    BrandMicrochip
    $2.585
    Each (In a Tube of 60)
    units
    Resistor String 12 bit - 1%FSR ±12LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI/Microwire) Unipolar External Single
    RS Stock No. 716-5851
    Mfr. Part No.CS43L22-CNZ
    $8.61
    Each
    units
    Delta Sigma 24 bit 96ksps - - 1 Surface Mount QFN 40 - Serial Bipolar Internal Single
    RS Stock No. 169-8392
    Mfr. Part No.CS43L22-CNZ
    $7.286
    Each (In a Tube of 100)
    units
    Delta Sigma 24 bit 96ksps - - 1 Surface Mount QFN 40 - Serial Bipolar Internal Single
    RS Stock No. 738-6027
    Mfr. Part No.MCP4921-E/P
    BrandMicrochip
    $4.17
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - 1%FSR ±12LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI/Microwire) Unipolar External Single
    RS Stock No. 522-8578
    Mfr. Part No.AD766JNZ
    $70.18
    Each
    units
    Current Steering 16 bit 390ksps ±2%FSR - 1 Through Hole PDIP 16 1.5µs Serial (SPI) Bipolar Internal Dual
    RS Stock No. 831-9103
    Mfr. Part No.AD5693RARMZ
    $10.15
    Each
    units
    Resistor String 16 bit - ±0.075%FSR ±8LSB 1 Surface Mount MSOP 10 7µs Serial (I2C) - External Single