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. 169-8388
    Mfr. Part No.CS4334-KSZ
    £1.693
    Each (In a Tube of 100)
    Units
    Delta Sigma 24 bit 96ksps ±5%FSR - 2 Surface Mount SOIC 8 - Serial Bipolar Internal Single
    RS Stock No. 759-0695
    Mfr. Part No.AD420ARZ-32
    £20.74
    Each
    Units
    Delta Sigma 16 bit 400sps - ±0.012%FSR 1 Surface Mount SOIC 24 3ns Serial (SPI) Bipolar External Single
    RS Stock No. 538-4381
    Mfr. Part No.AD421BNZ
    £14.26
    Each
    Units
    Delta Sigma 16 bit 125sps ±0.2%FSR ±0.01%FSR 1 Through Hole PDIP 16 8000µs Serial (SPI) - External, Internal Single
    RS Stock No. 145-0081
    Mfr. Part No.TLC7524CN
    £2.669
    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. 650-087
    Mfr. Part No.TLC7524CN
    £3.16
    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. 497-0149
    Mfr. Part No.AD1955ARSZ
    £10.97
    Each
    Units
    Delta Sigma 24 bit 192ksps ±6%FSR - 2 Surface Mount SSOP 28 - Serial (SPI) Bipolar Internal Single
    RS Stock No. 662-1638
    Mfr. Part No.DAC8830ICD
    £10.92
    Each
    Units
    R-2R, Resistor String 16 bit 1Msps ±7LSB ±1LSB 1 Surface Mount SOIC 8 1µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 922-2675
    Mfr. Part No.DAC8830ICD
    £9.606
    Each (In a Tube of 75)
    Units
    R-2R, Resistor String 16 bit 1Msps ±7LSB ±1LSB 1 Surface Mount SOIC 8 1µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 545-7158
    Mfr. Part No.LTC1446CN8#PBF
    £9.46
    Each
    Units
    R-2R 12 bit - - 5LSB 2 Through Hole PDIP 8 14µs Serial (SPI) Unipolar Internal Single
    RS Stock No. 709-6480
    Mfr. Part No.AD7538KNZ
    £33.04
    Each
    Units
    R-2R, Resistor String 14 bit 667ksps ±5LSB ±1LSB 1 Through Hole PDIP 24 1.5µs Parallel - External Single
    RS Stock No. 545-6565
    Mfr. Part No.LTC1257CN8#PBF
    £7.37
    Each
    Units
    Resistor String 12 bit - ±2LSB ±3.5LSB 1 Through Hole PDIP 8 6µs Serial (SPI) Unipolar External, Internal Single
    RS Stock No. 806-5395
    Mfr. Part No.AD5648ARUZ-2
    £14.90
    Each
    Units
    Resistor String 14 bit - -1%FSR ±8LSB 8 Surface Mount TSSOP 16 7µs Serial (SPI/QSPI/Microwire) - External, Internal Single
    RS Stock No. 806-5513
    Mfr. Part No.AD5791BRUZ
    £85.09
    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. 709-9139
    Mfr. Part No.DAC8411IDCKT
    £4.99
    Each
    Units
    Resistor String 16 bit - 0.2%FSR ±12LSB 1 Surface Mount SC-70 6 10µs Serial (SPI/QSPI/Microwire) Unipolar Supply Single
    RS Stock No. 921-5131
    Mfr. Part No.DAC8411IDCKT
    £3.249
    Each (On a Reel of 250)
    Units
    Resistor String 16 bit - 0.2%FSR ±12LSB 1 Surface Mount SC-70 6 10µs Serial (SPI/QSPI/Microwire) Unipolar Supply Single
    RS Stock No. 809-9720
    Mfr. Part No.ADDAC80NZ-CBI-V
    £27.96
    Each
    Units
    Current Steering 12 bit - - 1/2LSB 1 Through Hole PDIP 24 4µs Parallel Bipolar, Unipolar External, Internal Dual, Single
    RS Stock No. 709-8442
    Mfr. Part No.DAC10GPZ
    £8.18
    Each
    Units
    Current Steering 10 bit - - 1LSB 1 Through Hole PDIP 18 0.15µs Parallel Unipolar External Dual
    RS Stock No. 200-6640
    Mfr. Part No.TLC5628CN
    £5.85
    Each
    Units
    Resistor String 8 bit 45ksps ±60mV ±1LSB 8 Through Hole PDIP 16 10µs Serial (SPI) Unipolar External Single
    RS Stock No. 146-0165
    Mfr. Part No.MCP4911-E/P
    BrandMicrochip
    £0.877
    Each (In a Tube of 60)
    Units
    Resistor String 10 bit - 1%FSR 3.5LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar External Single
    RS Stock No. 726-3882
    Mfr. Part No.MCP4911-E/P
    BrandMicrochip
    £1.156
    Each (In a Pack of 5)
    Units
    Resistor String 10 bit - 1%FSR 3.5LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar External Single