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. 121-9190
    Mfr. Part No.DAC8501E/250
    PHP292.236
    Each (On a Reel of 250)
    units
    Resistor String 16 bit 93ksps ±1.25%FSR ±0.098%FSR 1 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 662-1473
    Mfr. Part No.DAC8501E/250
    PHP409.54
    Each
    units
    Resistor String 16 bit 93ksps ±1.25%FSR ±0.098%FSR 1 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 145-5921
    Mfr. Part No.DAC088S085CIMT/NOPB
    PHP194.481
    Each (In a Tube of 92)
    units
    Resistor String 8 bit - -0.75%FSR ±0.5LSB 8 Surface Mount TSSOP 16 4.5µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 162-8684
    Mfr. Part No.PCM1774RGPT
    PHP126.00
    Each (On a Reel of 250)
    units
    Delta Sigma 16 bit 50ksps - - 2 Surface Mount QFN 20 - Serial (I2C/SPI) - Internal Single
    RS Stock No. 378-1926
    Mfr. Part No.DAC7612U
    PHP592.70
    Each
    units
    R-2R, Resistor String 12 bit 130ksps - ±2LSB 2 Surface Mount SOIC 8 7µs Serial (SPI) Unipolar Internal Single
    RS Stock No. 825-3271
    Mfr. Part No.PCM1774RGPT
    PHP190.365
    Each (In a Pack of 2)
    units
    Delta Sigma 16 bit 50ksps - - 2 Surface Mount QFN 20 - Serial (I2C/SPI) - Internal Single
    RS Stock No. 407-331
    Mfr. Part No.DAC088S085CIMT/NOPB
    PHP224.75
    Each
    units
    Resistor String 8 bit - -0.75%FSR ±0.5LSB 8 Surface Mount TSSOP 16 4.5µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 100-3823
    Mfr. Part No.DAC7612U
    PHP510.899
    Each (In a Tube of 75)
    units
    R-2R, Resistor String 12 bit 130ksps - ±2LSB 2 Surface Mount SOIC 8 7µs Serial (SPI) Unipolar Internal Single
    RS Stock No. 922-2672
    Mfr. Part No.PCM1792ADB
    PHP1,198.365
    Each (In a Tube of 47)
    units
    Delta Sigma 24 bit 192ksps 6%FSR ±1dB 2 Surface Mount SSOP 28 - Serial (I2C/SPI) Bipolar Internal Dual
    RS Stock No. 162-4655
    Mfr. Part No.DAC7741YC/250
    PHP1,214.422
    Each (On a Reel of 250)
    units
    R-2R, Resistor String 16 bit - - ±3LSB 1 Surface Mount LQFP 48 5µs Parallel Bipolar, Unipolar Internal Dual
    RS Stock No. 921-5223
    Mfr. Part No.TLV5631IPW
    PHP566.979
    Each (In a Tube of 70)
    units
    Resistor String 10 bit 283ksps ±0.6%FSR ±2LSB 8 Surface Mount TSSOP 20 7µs Serial (SPI) Unipolar External Single
    RS Stock No. 545-7596
    Mfr. Part No.DAC7741YC/250
    PHP1,578.44
    Each
    units
    R-2R, Resistor String 16 bit - - ±3LSB 1 Surface Mount LQFP 48 5µs Parallel Bipolar, Unipolar Internal Dual
    RS Stock No. 460-613
    Mfr. Part No.DAC0808LCN/NOPB
    PHP126.052
    Each (In a Pack of 5)
    units
    R-2R, Resistor String 8 bit - - ±0.19%FSR 1 Through Hole MDIP 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 145-0836
    Mfr. Part No.TLC5620CD
    PHP310.28
    Each (In a Tube of 50)
    units
    Resistor String 8 bit 48ksps ±60mV ±1LSB 4 Surface Mount SOIC 14 10µs Serial (SPI) Unipolar External Single
    RS Stock No. 732-1395
    Mfr. Part No.TLV5631IPW
    PHP642.61
    Each
    units
    Resistor String 10 bit 283ksps ±0.6%FSR ±2LSB 8 Surface Mount TSSOP 20 7µs Serial (SPI) Unipolar External Single
    RS Stock No. 356-7045
    Mfr. Part No.TLC5620CD
    PHP355.31
    Each
    units
    Resistor String 8 bit 48ksps ±60mV ±1LSB 4 Surface Mount SOIC 14 10µs Serial (SPI) Unipolar External Single
    RS Stock No. 814-3717
    Mfr. Part No.PCM1780DBQ
    PHP107.53
    Each (In a Pack of 5)
    units
    Delta Sigma 24 bit 192ksps - - 8 Surface Mount SSOP 16 - Serial Bipolar - Single
    RS Stock No. 662-1717
    Mfr. Part No.PCM1792ADB
    PHP981.82
    Each
    units
    Delta Sigma 24 bit 192ksps 6%FSR ±1dB 2 Surface Mount SSOP 28 - Serial (I2C/SPI) Bipolar Internal Dual
    RS Stock No. 162-8300
    Mfr. Part No.PCM1780DBQ
    PHP92.095
    Each (In a Tube of 75)
    units
    Delta Sigma 24 bit 192ksps - - 8 Surface Mount SSOP 16 - Serial Bipolar - Single
    RS Stock No. 709-4591
    Mfr. Part No.DAC8218SRGZT
    PHP1,311.52
    Each
    units
    Resistor String 14 bit - ±4LSB ±1LSB 8 Surface Mount QFN 48 15µs Serial (SPI/QSPI/Microwire) Bipolar, Unipolar External Dual, Single