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. 819-7244
    Mfr. Part No.AD9116BCPZ
    SGD29.21
    Each
    units
    Segmented 12 bit 125Msps - - 2 Surface Mount LFCSP VQ 40 11.5ns Serial (SPI) - - Single
    RS Stock No. 522-8843
    Mfr. Part No.AD558JNZ
    SGD35.15
    Each
    units
    R-2R, Resistor String 8 bit - ±2.5LSB ±0.5LSB 1 Through Hole PDIP 16 3µs Parallel Unipolar Internal Single
    RS Stock No. 851-6881
    Mfr. Part No.LTC2641CMS8-16#PBF
    SGD23.08
    Each
    units
    - 16 bit - - ±2LSB 1 Surface Mount MSOP 8 1µs Serial (SPI/Microwire) Bipolar - Single
    RS Stock No. 169-0511
    Mfr. Part No.BU2506FV-E2
    BrandROHM
    SGD2.955
    Each (On a Reel of 2500)
    units
    R-2R, Resistor String 10 bit - ±25mV ±3.5LSB 8 Surface Mount SSOP 20 20µs Serial (SPI) Unipolar External Single
    RS Stock No. 650-087
    Mfr. Part No.TLC7524CN
    SGD6.79
    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. 522-9521
    Mfr. Part No.AD7548JNZ
    SGD49.20
    Each
    units
    R-2R, Resistor String 12 bit - ±6LSB ±1LSB 1 Through Hole PDIP 20 1.5µs Parallel - External Single
    RS Stock No. 378-1926
    Mfr. Part No.DAC7612U
    SGD17.69
    Each
    units
    R-2R, Resistor String 12 bit 130ksps - ±2LSB 2 Surface Mount SOIC 8 7µs Serial (SPI) Unipolar Internal Single
    RS Stock No. 709-8464
    Mfr. Part No.DAC8143FSZ
    SGD27.74
    Each
    units
    R-2R, Resistor String 12 bit 2.63Msps ±2LSB ±1LSB 1 Surface Mount SOIC W 16 1µs Serial (SPI) - External Single
    RS Stock No. 145-0081
    Mfr. Part No.TLC7524CN
    SGD5.764
    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. 697-6896
    Mfr. Part No.AD5318ARUZ
    SGD15.84
    Each
    units
    Resistor String 10 bit 167ksps ±1.25%FSR ±4LSB 8 Surface Mount TSSOP 16 9µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 759-0695
    Mfr. Part No.AD420ARZ-32
    SGD40.24
    Each
    units
    Delta Sigma 16 bit 400sps - ±0.012%FSR 1 Surface Mount SOIC 24 3ns Serial (SPI) Bipolar External Single
    RS Stock No. 522-9004
    Mfr. Part No.DAC08CPZ
    SGD6.26
    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. 496-7660
    Mfr. Part No.AD5443YRMZ
    SGD9.75
    Each
    units
    R-2R, Resistor String 12 bit 2.5Msps ±10mV ±1LSB 1 Surface Mount MSOP 10 0.16µs Serial (SPI/QSPI/Microwire) - External Single
    RS Stock No. 100-3823
    Mfr. Part No.DAC7612U
    SGD15.435
    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. 545-7158
    Mfr. Part No.LTC1446CN8#PBF
    SGD23.19
    Each
    units
    R-2R 12 bit - - 5LSB 2 Through Hole PDIP 8 14µs Serial (SPI) Unipolar Internal Single
    RS Stock No. 407-331
    Mfr. Part No.DAC088S085CIMT/NOPB
    SGD5.76
    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. 517-123
    Mfr. Part No.DAC121C085CIMM/NOPB
    SGD4.10
    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. 912-5287
    Mfr. Part No.MCP48FEB21-E/UN
    BrandMicrochip
    SGD2.16
    Each (In a Pack of 5)
    units
    Resistor String 12 bit - 70LSB 6LSB 1 Surface Mount MSOP 10 7.8µs - Bipolar External, Internal Single
    RS Stock No. 759-0737
    Mfr. Part No.AD5338ARMZ
    SGD9.06
    Each
    units
    Resistor String 10 bit 14.8ksps ±1%FSR ±4LSB 2 Surface Mount MSOP 8 9µs Serial Bipolar External Single
    RS Stock No. 191-4294
    Mfr. Part No.MAX5886EGK+D
    SGD30.855
    Each (In a Tube of 30)
    units
    Current Steering 12 bit 500Msps - ±0.2LSB 1 Surface Mount QFN 68 11ns Parallel (LVDS) Unipolar External, Internal Single