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. 460-613
    Mfr. Part No.DAC0808LCN/NOPB
    TWD83.00
    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. 427-262
    Mfr. Part No.DAC8420FSZ
    TWD2,347.00
    Each
    units
    - 12 bit 125ksps ±8LSB ±4LSB 4 Surface Mount SOIC W 16 13µs Serial (SPI) Bipolar, Unipolar External Dual, Single
    RS Stock No. 758-9689
    Mfr. Part No.AD5668BRUZ-2
    TWD854.00
    Each
    units
    Resistor String 16 bit 95ksps -1%FSR ±16LSB 8 Surface Mount TSSOP 16 7µs Serial (SPI) - Internal Single
    RS Stock No. 189-9049
    Mfr. Part No.MAX5842LEUB+
    TWD339.00
    Each
    units
    Resistor String 12 bit - -3%FSR ±16LSB 4 Surface Mount μMAX 10 12µs Serial (I2C) Unipolar External Single
    RS Stock No. 806-5430
    Mfr. Part No.AD5685RBRUZ
    TWD474.00
    Each
    units
    Resistor String 14 bit - ±0.2%FSR ±1LSB 4 Surface Mount TSSOP 16 8µs Serial (SPI) - Internal Single
    RS Stock No. 825-3271
    Mfr. Part No.PCM1774RGPT
    TWD116.00
    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. 183-2025
    Mfr. Part No.AD5663RBRMZ-3
    TWD363.00
    Each
    units
    Resistor String 16 bit - ±1%FSR - 2 Surface Mount MSOP 10 7µs - Bipolar External, Internal Single
    RS Stock No. 662-1502
    Mfr. Part No.DAC8560IDDGKT
    TWD301.00
    Each
    units
    Resistor String 16 bit 200ksps ±0.5%FSR ±8LSB 1 Surface Mount MSOP 8 12µs Serial (SPI/QSPI/Microwire) Unipolar External, Internal Single
    RS Stock No. 806-5487
    Mfr. Part No.AD5732RBREZ
    TWD573.00
    Each
    units
    Resistor String 14 bit - ±4LSB ±4LSB 2 Surface Mount TSSOP 24 12µs Serial (SPI/QSPI/Microwire) Bipolar, Unipolar External, Internal Dual, Single
    RS Stock No. 913-0006
    Mfr. Part No.AD5300BRTZ-500RL7
    TWD78.20
    Each (On a Reel of 500)
    units
    Resistor String 8 bit - -3.5LSB ±1LSB 1 Surface Mount SOT-23 6 6µs Serial (SPI) Bipolar External Single
    RS Stock No. 709-5872
    Mfr. Part No.AD5410AREZ
    TWD324.00
    Each
    units
    R-2R, Resistor String 12 bit - ±0.2%FSR ±0.032%FSR 1 Surface Mount TSSOP 24 40µs Serial (SPI/QSPI/Microwire) Unipolar External, Internal Single
    RS Stock No. 879-3261
    Mfr. Part No.MCP47FEB21A0-E/ST
    BrandMicrochip
    TWD54.80
    Each (In a Pack of 5)
    units
    Resistor String 12 bit - 4.5LSB ±0.5LSB 1 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 806-5440
    Mfr. Part No.AD5687RBRUZ
    TWD233.00
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - ±0.2%FSR ±1LSB 2 Surface Mount TSSOP 16 7µs Serial (SPI) - External, Internal -
    RS Stock No. 913-0002
    Mfr. Part No.AD5601BKSZ-500RL7
    TWD29.90
    Each (On a Reel of 500)
    units
    Resistor String 8 bit - ±0.5mV ±0.5LSB 1 Surface Mount SC-70 6 10µs Serial (SPI) Bipolar Internal Single