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. 687-8736
    Mfr. Part No.MCP4728-E/UN
    BrandMicrochip
    €1.66
    Each
    units
    Resistor String 12 bit - ±3%FSR ±13LSB 4 Surface Mount MSOP 10 6µs Serial (I2C) Unipolar Internal Single
    RS Stock No. 709-6253
    Mfr. Part No.AD7249ANZ
    €29.47
    Each
    units
    R-2R, Resistor String 12 bit 125ksps ±6LSB ±1LSB 2 Through Hole PDIP 16 10µs Serial (SPI) Bipolar, Unipolar External, Internal Dual, Single
    RS Stock No. 758-9664
    Mfr. Part No.AD5664RBRMZ-5
    €15.41
    Each
    units
    Resistor String 16 bit 220ksps ±1%FSR ±16LSB 4 Surface Mount MSOP 10 7µs Serial (SPI) Bipolar External, Internal Single
    RS Stock No. 162-4365
    Mfr. Part No.TLC5628CN
    €5.648
    Each (In a Tube of 25)
    units
    Resistor String 8 bit 45ksps ±60mV ±1LSB 8 Through Hole PDIP 16 10µs Serial (SPI) Unipolar External Single
    RS Stock No. 738-6027
    Mfr. Part No.MCP4921-E/P
    BrandMicrochip
    €1.83
    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. 522-9896
    Mfr. Part No.AD7541AKNZ
    €22.04
    Each
    units
    R-2R, Resistor String 12 bit - ±5LSB ±0.5LSB 1 Through Hole PDIP 18 0.6µs Parallel - External Single
    RS Stock No. 697-6922
    Mfr. Part No.AD5734RBREZ
    €18.99
    Each
    units
    Resistor String 14 bit - 0.08%FSR ±4LSB 4 Surface Mount TSSOP 24 12µs Serial (SPI/QSPI/Microwire) Bipolar, Unipolar External, Internal Dual, Single
    RS Stock No. 165-2133
    Mfr. Part No.MCP4821-E/P
    BrandMicrochip
    €1.632
    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. 169-8392
    Mfr. Part No.CS43L22-CNZ
    €3.34
    Each (In a Tube of 100)
    units
    Delta Sigma 24 bit 96ksps - - 1 Surface Mount QFN 40 - Serial Bipolar Internal Single
    RS Stock No. 697-6940
    Mfr. Part No.AD5764RBSUZ
    €41.63
    Each
    units
    R-2R, Resistor String 16 bit - ±0.02%FSR ±2LSB 4 Surface Mount TQFP 32 10µs Serial (SPI/QSPI/Microwire) Bipolar External, Internal Dual
    RS Stock No. 887-7423
    Mfr. Part No.MCP4728-E/UN
    BrandMicrochip
    €1.221
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - - ±13LSB - Surface Mount MSOP 10 - Serial (I2C) - - Single
    RS Stock No. 922-2634
    Mfr. Part No.DAC8550IBDGKT
    €3.827
    Each (On a Reel of 250)
    units
    Resistor String 16 bit 200ksps ±0.5%FSR ±8LSB 1 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 786-9859
    Mfr. Part No.LTC1660CGN#PBF
    €11.73
    Each
    units
    R-2R, Resistor String 10 bit - ±3LSB ±2.5LSB 8 Surface Mount SSOP 16 30µs Serial Unipolar Internal Single
    RS Stock No. 709-6231
    Mfr. Part No.AD7244JRZ
    €49.36
    Each
    units
    R-2R, Resistor String 14 bit 250ksps ±10LSB ±2LSB 2 Surface Mount SOIC W 28 4µs Serial Bipolar External, Internal Dual
    RS Stock No. 806-5507
    Mfr. Part No.AD5781BRUZ
    €42.14
    Each
    units
    R-2R, Resistor String 18 bit - ±5.25LSB ±0.5LSB 1 Surface Mount TSSOP 20 1µs Serial (SPI) Bipolar External, Internal Dual
    RS Stock No. 200-6640
    Mfr. Part No.TLC5628CN
    €6.49
    Each
    units
    Resistor String 8 bit 45ksps ±60mV ±1LSB 8 Through Hole PDIP 16 10µs Serial (SPI) Unipolar External Single
    RS Stock No. 522-8556
    Mfr. Part No.AD669ANZ
    €35.88
    Each
    units
    Current Steering 16 bit 167ksps ±0.15%FSR ±4LSB 1 Through Hole PDIP 28 13µs Parallel Bipolar, Unipolar External, Internal Dual
    RS Stock No. 716-5851
    Mfr. Part No.CS43L22-CNZ
    €4.77
    Each
    units
    Delta Sigma 24 bit 96ksps - - 1 Surface Mount QFN 40 - Serial Bipolar Internal Single
    RS Stock No. 523-6715
    Mfr. Part No.AD7537JNZ
    €31.67
    Each
    units
    R-2R, Resistor String 12 bit 667ksps ±6LSB ±1LSB 2 Through Hole PDIP 24 1.5µs Parallel - External Single
    RS Stock No. 662-1489
    Mfr. Part No.DAC8550IBDGKT
    €5.87
    Each
    units
    Resistor String 16 bit 200ksps ±0.5%FSR ±8LSB 1 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single