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. 157-8519
    Mfr. Part No.AD5320BRTZ-500RL7
    MYR22.30
    Each (On a Reel of 500)
    units
    Resistor String 12 bit 125ksps -1.25%FSR ±16LSB 1 Surface Mount SOT-23 6 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 183-1858
    Mfr. Part No.AD5446YRMZ
    MYR43.08
    Each
    units
    - 14 bit - - - 1 Surface Mount MSOP 10 110ns - Bipolar External Single
    RS Stock No. 922-2631
    Mfr. Part No.DAC8551IADGKT
    MYR20.584
    Each (On a Reel of 250)
    units
    Resistor String 16 bit 200ksps ±0.5%FSR ±12LSB 1 Surface Mount MSOP 8 12µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 796-8903
    Mfr. Part No.AD5621BKSZ-500RL7
    MYR12.17
    Each (In a Pack of 5)
    units
    Resistor String 12 bit - ±0.5mV ±1LSB 1 Surface Mount SC-70 6 10µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 851-6881
    Mfr. Part No.LTC2641CMS8-16#PBF
    MYR61.81
    Each
    units
    - 16 bit - - ±2LSB 1 Surface Mount MSOP 8 1µs Serial (SPI/Microwire) Bipolar - Single
    RS Stock No. 165-9461
    Mfr. Part No.MAX531BCPD+
    MYR55.121
    Each (In a Tube of 25)
    units
    R-2R 12 bit - - ±1LSB 1 Through Hole PDIP 14 25µs Serial (SPI/QSPI/Microwire) Bipolar, Unipolar Internal Single
    RS Stock No. 912-8201
    Mfr. Part No.AD5660BRJZ-2500RL7
    MYR29.523
    Each (On a Reel of 500)
    units
    Resistor String 16 bit - ±1%FSR ±1LSB 1 Surface Mount SOT-23 8 10µs Serial (SPI/QSPI/Microwire) Bipolar External, Internal Single
    RS Stock No. 922-2634
    Mfr. Part No.DAC8550IBDGKT
    MYR22.178
    Each (On a Reel of 250)
    units
    Resistor String 16 bit 200ksps ±0.5%FSR ±8LSB 1 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 825-3271
    Mfr. Part No.PCM1774RGPT
    MYR14.23
    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. 759-0147
    Mfr. Part No.AD9742ARZ
    MYR68.58
    Each
    units
    R-2R, Resistor String 12 bit 210Msps 20mA +2.5LSB - Surface Mount SOIC 28 0.011µs Parallel Unipolar External, Internal Single
    RS Stock No. 522-9004
    Mfr. Part No.DAC08CPZ
    MYR17.65
    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. 190-4584
    Mfr. Part No.DS4432U+
    MYR3.958
    Each (In a Tube of 50)
    units
    Current Sink 7 bit - - - 2 Surface Mount μSOP 8 - Serial (I2C) - External Single
    RS Stock No. 191-4834
    Mfr. Part No.MAX5886EGK+D
    MYR106.06
    Each
    units
    Current Steering 12 bit 500Msps - ±0.2LSB 1 Surface Mount QFN 68 11ns Parallel (LVDS) Unipolar External, Internal Single
    RS Stock No. 538-8248
    Mfr. Part No.AD5325ARMZ
    MYR58.57
    Each
    units
    Resistor String 12 bit 125ksps ±1%FSR ±16LSB 4 Surface Mount MSOP 10 10µs Serial (I2C) Unipolar External Single
    RS Stock No. 809-9326
    Mfr. Part No.AD5660BRJZ-2500RL7
    MYR34.72
    Each
    units
    Resistor String 16 bit - ±1%FSR ±1LSB 1 Surface Mount SOT-23 8 10µs Serial (SPI/QSPI/Microwire) Bipolar External, Internal Single
    RS Stock No. 662-1735
    Mfr. Part No.PCM1798DB
    MYR28.59
    Each
    units
    Delta Sigma 24 bit 192ksps 7%FSR ±1dB 2 Surface Mount SSOP 28 - Serial (SPI) Bipolar Internal Dual
    RS Stock No. 786-9786
    Mfr. Part No.LTC1257CS8#PBF
    MYR49.29
    Each
    units
    Resistor String 12 bit - ±0.5LSB ±3.5LSB 1 Surface Mount SOIC 8 6µs Serial Unipolar Internal Single
    RS Stock No. 879-3246
    Mfr. Part No.MCP47FEB12A0-E/ST
    BrandMicrochip
    MYR7.44
    Each (In a Pack of 5)
    units
    Resistor String 10 bit - 4.5LSB ±0.5LSB 2 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 160-0714
    Mfr. Part No.AD9204BCPZ-20
    MYR42.275
    Each (In a Tray of 260)
    units
    Pipelined 10 bit 20Msps +1.8%FSR ±0.6LSB 2 Surface Mount LFCSP 64 - Serial (SPI) Unipolar Internal Single
    RS Stock No. 742-2858
    Mfr. Part No.DAC8162SDSCT
    MYR51.09
    Each
    units
    Resistor String 14 bit - ±0.2%FSR 1LSB 2 Surface Mount SON 10 10µs Serial (SPI) Unipolar Internal Single