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. 190-4636
    Mfr. Part No.MAX5312EAE+
    €8.18
    Each (In a Tube of 76)
    units
    DAC Ladder 12 bit - - ±1LSB 1 Surface Mount SSOP 16 10µs Microwire, Serial, SPI/QSPI Bipolar, Unipolar External Dual, Single
    RS Stock No. 190-5108
    Mfr. Part No.MAX522CSA+
    €9.31
    1 Pack of 2
    Pack(s)
    R-2R 8 bit - - ±1LSB 2 Surface Mount SO 8 70µs SPI Serial - External Single
    RS Stock No. 169-7505
    Mfr. Part No.MAX5717AGSD+
    €8.235
    Each (In a Tube of 50)
    units
    Resistor Ladder 16 bit - - ±4LSB 1 Surface Mount SOIC 14 0.75µs - Unipolar External Single
    RS Stock No. 806-7837
    Mfr. Part No.AD7847ARZ
    €31.85
    Each
    units
    Segmented 12 bit 250ksps - ±1LSB 2 Surface Mount SOIC 24 5µs Parallel Bipolar, Unipolar Internal Dual
    RS Stock No. 708-9987
    Mfr. Part No.AD7835ASZ
    €46.82
    Each
    units
    R-2R, Resistor String 14 bit 100ksps ±5mV ±2LSB 4 Surface Mount MQFP 44 10µs Parallel Bipolar, Unipolar External Dual
    RS Stock No. 121-8946
    Mfr. Part No.DAC8554IPW
    €7.955
    Each (In a Tube of 90)
    units
    Resistor String 16 bit 200ksps ±0.5%FSR ±12LSB 4 Surface Mount TSSOP 16 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 540-4047
    Mfr. Part No.MAX521ACWG+
    €11.82
    Each
    units
    R-2R, Resistor String 8 bit - 18mV - 8 Surface Mount SOIC W 24 6µs Serial (I2C) Unipolar External Single
    RS Stock No. 190-4627
    Mfr. Part No.MAX5216BGUA+
    €3.144
    Each (In a Tube of 50)
    units
    String DAC 16 bit - - ±8LSB 1 Surface Mount μMAX 8 18µs SPI Serial Unipolar External Single
    RS Stock No. 799-7608
    Mfr. Part No.MAX521BEWG+
    €8.04
    Each
    units
    R-2R 8 bit - 20mV ±1.5 LSB, ±2LSB 8 Surface Mount SOIC 24 6µs Serial Unipolar External Single
    RS Stock No. 145-6388
    Mfr. Part No.PCM1755DBQ
    €2.413
    Each (In a Tube of 75)
    units
    Delta Sigma 24 bit 192ksps ±6%FSR ±0.5dB 2 Surface Mount SSOP 16 - Serial (SPI) Bipolar - Single
    RS Stock No. 165-1905
    Mfr. Part No.MCP4726A1T-E/CH
    BrandMicrochip
    €0.617
    Each (On a Reel of 3000)
    units
    Resistor String 12 bit - 82LSB 14.5LSB 1 Surface Mount SOT-23 6 6µs Serial (I2C) Bipolar External Single
    RS Stock No. 761-9131
    Mfr. Part No.LTC1658IS8#PBF
    €11.04
    Each
    units
    R-2R, Resistor String 14 bit - ±1LSB ±8LSB 1 Surface Mount SOIC 8 12µs Serial (SPI) - External Single
    RS Stock No. 538-8254
    Mfr. Part No.AD5325BRMZ
    €16.53
    Each
    units
    Resistor String 12 bit 125ksps ±1%FSR ±10LSB 4 Surface Mount MSOP 10 10µs Serial (I2C) Unipolar External Single
    RS Stock No. 146-0260
    Mfr. Part No.MCP4811-E/SN
    BrandMicrochip
    €1.029
    Each (In a Tube of 100)
    units
    Resistor String 10 bit - - 3.5LSB 1 Surface Mount SOIC 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 160-7973
    Mfr. Part No.AD5641BKSZ-500RL7
    €2.831
    Each (On a Reel of 500)
    units
    Resistor String 14 bit - ±0.5mV ±4LSB 1 Surface Mount SC-70 6 10µs Serial (SPI/QSPI) Bipolar External Single
    RS Stock No. 761-9143
    Mfr. Part No.LTC1661CMS8#PBF
    €3.47
    Each
    units
    R-2R, Resistor String 10 bit 10MHz ±12LSB ±2LSB 2 Surface Mount MSOP 8 30µs Serial (SPI) - External Single
    RS Stock No. 203-4735
    Mfr. Part No.MCP48CVB22-E/MF
    BrandMicrochip
    €1.662
    Each (In a Tube of 120)
    units
    - 12 bit - - - 2 Surface Mount DFN, MSOP, QFN 10 - Parallel & Serial (SPI) - - -
    RS Stock No. 522-8483
    Mfr. Part No.AD7243ANZ
    €18.50
    Each
    units
    R-2R, Resistor String 12 bit 300ksps ±6LSB ±1LSB 1 Through Hole PDIP 16 10µs Serial (SPI) Bipolar, Unipolar External, Internal Dual, Single
    RS Stock No. 662-1984
    Mfr. Part No.TLV5638CD
    €11.28
    Each
    units
    Resistor String 12 bit 233ksps ±0.6%FSR ±4LSB 2 Surface Mount SOIC 8 7µs Serial (SPI/QSPI/Microwire) Unipolar External, Internal Single
    RS Stock No. 820-9319
    Mfr. Part No.AD5622YKSZ-1500RL7
    €5.215
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - 0.5mV ±2LSB 1 Surface Mount SC-70 6 10µs Serial (I2C) Bipolar Internal Single