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. 427-076
    Mfr. Part No.DAC8043AFPZ
    TWD449.00
    Each
    units
    R-2R, Resistor String 12 bit 4Msps ±2LSB ±1LSB 1 Through Hole PDIP 8 1µs Serial (SPI) - External Single
    RS Stock No. 662-1735
    Mfr. Part No.PCM1798DB
    TWD251.00
    Each
    units
    Delta Sigma 24 bit 192ksps 7%FSR ±1dB 2 Surface Mount SSOP 28 - Serial (SPI) Bipolar Internal Dual
    RS Stock No. 709-4796
    Mfr. Part No.AD5662ARMZ-1
    TWD224.00
    Each
    units
    Resistor String 16 bit 1.2Msps ±1.5%FSR ±32LSB 1 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 191-4293
    Mfr. Part No.MAX5841LEUB+
    TWD252.80
    Each (In a Tube of 50)
    units
    Resistor String 10 bit - - ±4LSB 4 Surface Mount μMAX 10 12µs Serial (2 Wire, I2C) - External Single
    RS Stock No. 813-6422
    Mfr. Part No.DAC7678SPW
    TWD399.00
    Each
    units
    Resistor String 12 bit - ±0.2%FSR 1LSB 8 Surface Mount TSSOP 16 12µs Serial Bipolar External, Internal Single
    RS Stock No. 806-5478
    Mfr. Part No.AD5697RBRUZ
    TWD233.00
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - ±0.1%FSR ±1LSB 2 Surface Mount TSSOP 16 7µs Serial (I2C) - Internal Single
    RS Stock No. 796-8893
    Mfr. Part No.AD5601BKSZ-500RL7
    TWD52.00
    Each (In a Pack of 5)
    units
    Resistor String 8 bit - ±0.5mV ±0.5LSB 1 Surface Mount SC-70 6 10µs Serial (SPI) Bipolar Internal Single
    New
    RS Stock No. 216-8634
    Mfr. Part No.LTC8043ES8#PBF
    TWD403.00
    Each
    units
    - 12 bit - - - 1 - SOIC 8 - - - - -
    RS Stock No. 190-8276
    Mfr. Part No.MAX5259EEE+
    TWD135.80
    Each (In a Pack of 5)
    units
    Resistor String 8 bit - - ±1LSB 8 Surface Mount QSOP 16 10µs SPI Serial Unipolar External Single
    RS Stock No. 497-3609
    Mfr. Part No.AD5334BRUZ
    TWD358.00
    Each
    units
    Resistor String 8 bit 167ksps ±1%FSR ±1LSB 4 Surface Mount TSSOP 24 8µs Parallel Unipolar External Single
    RS Stock No. 759-0695
    Mfr. Part No.AD420ARZ-32
    TWD1,001.00
    Each
    units
    Delta Sigma 16 bit 400sps - ±0.012%FSR 1 Surface Mount SOIC 24 3ns Serial (SPI) Bipolar External Single
    RS Stock No. 806-8073
    Mfr. Part No.AD8802ARUZ
    TWD347.40
    Each (In a Pack of 5)
    units
    R-2R 8 bit 1.7Msps ±1LSB ±1.5LSB 12 Surface Mount TSSOP 20 0.6µs Serial (SPI) - Internal Single
    RS Stock No. 913-0015
    Mfr. Part No.AD5621BKSZ-500RL7
    TWD55.90
    Each (On a Reel of 500)
    units
    Resistor String 12 bit - ±0.5mV ±1LSB 1 Surface Mount SC-70 6 10µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 185-1362
    Mfr. Part No.BU2508FV-E2
    BrandROHM
    TWD149.40
    Each (In a Pack of 5)
    units
    - 10 bit - ±25mV ±3.5LSB 4 Surface Mount SSOP 14 20µs - - - Single
    RS Stock No. 190-5448
    Mfr. Part No.MAX5312EAE+
    TWD361.00
    Each
    units
    DAC Ladder 12 bit - - ±1LSB 1 Surface Mount SSOP 16 10µs Microwire, Serial, SPI/QSPI Bipolar, Unipolar External Dual, Single
    RS Stock No. 799-7608
    Mfr. Part No.MAX521BEWG+
    TWD460.00
    Each
    units
    R-2R 8 bit - 20mV ±1.5 LSB, ±2LSB 8 Surface Mount SOIC 24 6µs Serial Unipolar External Single
    RS Stock No. 877-8720
    Mfr. Part No.AD7224KRZ-18
    TWD510.00
    Each
    units
    R-2R 8 bit - ±3/2LSB ±1LSB 1 Surface Mount SOIC 18 20µs Serial Bipolar, Unipolar Internal Dual, Single
    RS Stock No. 877-8736
    Mfr. Part No.AD7397ARZ
    TWD316.00
    Each
    units
    R-2R 10 bit - ±20mV ±2LSB 2 Surface Mount SOIC 24 70µs Parallel Bipolar, Unipolar External Single
    RS Stock No. 522-8893
    Mfr. Part No.AD7528JNZ
    TWD592.00
    Each
    units
    R-2R, Resistor String 8 bit 5.6Msps ±6LSB ±1LSB 2 Through Hole PDIP 20 0.4µs Parallel - External Single
    RS Stock No. 189-8788
    Mfr. Part No.MAX517BCPA+
    TWD213.00
    Each (In a Pack of 2)
    units
    R-2R, Resistor String 8 bit - ±18mV - 1 Through Hole PDIP 8 6µs Serial (I2C) Unipolar External Single