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. 533-8776
    Mfr. Part No.DAC0800LCN/NOPB
    $2.68
    Each
    units
    Current Steering 8 bit - ±1LSB ±0.19%FSR 1 Through Hole MDIP 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 522-9004
    Mfr. Part No.DAC08CPZ
    $6.05
    Each
    units
    Current Steering 8 bit 11.8Msps ±1LSB ±0.39%FSR 1 Through Hole PDIP 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 517-123
    Mfr. Part No.DAC121C085CIMM/NOPB
    $3.85
    Each
    units
    Resistor String 12 bit - -0.7%FSR ±8LSB 1 Surface Mount MSOP 8 8.5µs Serial (I2C) Unipolar External Single
    RS Stock No. 165-4144
    Mfr. Part No.MCP47FEB21A0-E/ST
    BrandMicrochip
    $1.607
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - 4.5LSB ±0.5LSB 1 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 121-8717
    Mfr. Part No.DAC0800LCN/NOPB
    $2.837
    Each (In a Tube of 25)
    units
    Current Steering 8 bit - ±1LSB ±0.19%FSR 1 Through Hole MDIP 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 889-5503
    Mfr. Part No.MCP4822-E/MS
    BrandMicrochip
    $3.455
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - ±2%FSR ±12LSB 2 Surface Mount MSOP 8 4.5µs Serial (SPI/Microwire) Unipolar Internal Single
    RS Stock No. 879-3261
    Mfr. Part No.MCP47FEB21A0-E/ST
    BrandMicrochip
    $2.132
    Each (In a Pack of 5)
    units
    Resistor String 12 bit - 4.5LSB ±0.5LSB 1 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 523-7235
    Mfr. Part No.AD9754ARUZ
    $29.45
    Each
    units
    - 14 bit 125Msps ±5%FSR ±3LSB 1 Surface Mount TSSOP 28 0.035µs Parallel - External, Internal Single
    RS Stock No. 669-6294
    Mfr. Part No.MCP4822-E/MS
    BrandMicrochip
    $4.545
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - ±2%FSR ±12LSB 2 Surface Mount MSOP 8 4.5µs Serial (SPI/Microwire) Unipolar Internal Single
    RS Stock No. 169-0513
    Mfr. Part No.BU9480F-E2
    BrandROHM
    $2.667
    Each (On a Reel of 2500)
    units
    Resistor String 16 bit 200ksps - - 2 Surface Mount SOP 8 0.06µs Serial Bipolar External Single
    RS Stock No. 759-0819
    Mfr. Part No.AD5663ARMZ
    $12.65
    Each
    units
    Resistor String 16 bit 220ksps ±1%FSR ±16LSB 2 Surface Mount MSOP 10 7µs Serial (SPI) Bipolar External, Internal Single
    RS Stock No. 145-0081
    Mfr. Part No.TLC7524CN
    $5.376
    Each (In a Tube of 25)
    units
    R-2R, Resistor String 8 bit 10Msps ±2.5LSB ±0.5LSB 1 Through Hole PDIP 16 0.1µs Parallel - External Single
    RS Stock No. 759-1008
    Mfr. Part No.AD7524LNZ
    $37.76
    Each
    units
    R-2R, Resistor String 8 bit 4Msps - ±0.125LSB - Through Hole PDIP 16 0.25µs Parallel Bipolar, Unipolar External Single
    RS Stock No. 700-3501
    Mfr. Part No.BU9480F-E2
    BrandROHM
    $5.61
    Each
    units
    Resistor String 16 bit 200ksps - - 2 Surface Mount SOP 8 0.06µs Serial Bipolar External Single
    RS Stock No. 145-6748
    Mfr. Part No.PCM1781DBQ
    $3.36
    Each (In a Tube of 75)
    units
    Delta Sigma 24 bit 192ksps ±6%FSR - 2 Surface Mount SSOP 16 - Serial (SPI) Bipolar - Single
    RS Stock No. 146-0259
    Mfr. Part No.MCP4728A1-E/UN
    BrandMicrochip
    $2.144
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - - 13LSB 4 Surface Mount MSOP 10 6µs Serial (I2C) Unipolar External, Internal Single
    RS Stock No. 887-7274
    Mfr. Part No.MCP4822-E/SN
    BrandMicrochip
    $3.306
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - ±2%FSR ±12LSB 2 Surface Mount SOIC 8 4.5µs Serial (SPI/Microwire) Unipolar Internal Single
    RS Stock No. 650-087
    Mfr. Part No.TLC7524CN
    $6.33
    Each
    units
    R-2R, Resistor String 8 bit 10Msps ±2.5LSB ±0.5LSB 1 Through Hole PDIP 16 0.1µs Parallel - External Single
    RS Stock No. 806-5513
    Mfr. Part No.AD5791BRUZ
    $159.65
    Each
    units
    R-2R, Resistor String 20 bit - ±21LSB ±1LSB 1 Surface Mount TSSOP 20 1µs Serial (SPI) Bipolar External, Internal Dual
    RS Stock No. 669-6304
    Mfr. Part No.MCP4822-E/SN
    BrandMicrochip
    $5.46
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - ±2%FSR ±12LSB 2 Surface Mount SOIC 8 4.5µs Serial (SPI/Microwire) Unipolar Internal Single