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. 162-8303
    Mfr. Part No.PCM5122PW
    MYR29.228
    Each (In a Tube of 50)
    units
    Delta Sigma 32 bit 384ksps - - 2 Surface Mount TSSOP 28 - Serial (SPI) Bipolar Internal Single
    RS Stock No. 814-3732
    Mfr. Part No.PCM5122PW
    MYR35.52
    Each
    units
    Delta Sigma 32 bit 384ksps - - 2 Surface Mount TSSOP 28 - Serial (SPI) Bipolar Internal Single
    RS Stock No. 758-9651
    Mfr. Part No.AD565AJD
    MYR267.25
    Each
    units
    Current Steering 12 bit 4Msps ±1/2LSB - 1 Through Hole CDIP 24 0.25µs Parallel Bipolar - Dual
    RS Stock No. 497-3570
    Mfr. Part No.AD5331BRUZ
    MYR26.42
    Each
    units
    Resistor String 10 bit 143ksps ±1%FSR ±4LSB 1 Surface Mount TSSOP 20 9µs Parallel Unipolar External Single
    RS Stock No. 411-918
    Mfr. Part No.LTC1665CGN#PBF
    MYR30.52
    Each
    units
    - 8 bit - ±4LSB ±1LSB 8 Surface Mount SSOP 16 30µs Serial Bipolar External Single
    RS Stock No. 523-7106
    Mfr. Part No.DAC8412FPZ
    MYR441.69
    Each
    units
    R-2R, Resistor String 12 bit 167ksps ±8LSB ±4LSB 4 Through Hole PDIP 28 10µs Parallel Unipolar External Dual, Single
    RS Stock No. 121-8717
    Mfr. Part No.DAC0800LCN/NOPB
    MYR8.232
    Each (In a Tube of 25)
    units
    Current Steering 8 bit - ±1LSB ±0.19%FSR 1 Through Hole MDIP 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 522-9515
    Mfr. Part No.AD7543JNZ
    MYR166.02
    Each
    units
    R-2R, Resistor String 12 bit - ±13.5LSB ±1LSB 1 Through Hole PDIP 16 2µs Serial - External Single
    RS Stock No. 522-8275
    Mfr. Part No.DAC08CSZ
    MYR14.92
    Each
    units
    Current Steering 8 bit 11.8Msps ±1LSB ±0.39%FSR 1 Surface Mount SOIC 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 770-9798
    Mfr. Part No.MCP4821-E/P
    BrandMicrochip
    MYR11.08
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - 12LSB ±12LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 506-1741
    Mfr. Part No.LTC2622CMS8#PBF
    MYR28.33
    Each
    units
    - 12 bit - ±0.7%FSR ±4LSB 2 Surface Mount MSOP 8 7µs Serial (SPI/Microwire) Unipolar External Single
    RS Stock No. 165-2133
    Mfr. Part No.MCP4821-E/P
    BrandMicrochip
    MYR9.24
    Each (In a Tube of 60)
    units
    Resistor String 12 bit - 12LSB ±12LSB 1 Through Hole PDIP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 533-8776
    Mfr. Part No.DAC0800LCN/NOPB
    MYR9.68
    Each
    units
    Current Steering 8 bit - ±1LSB ±0.19%FSR 1 Through Hole MDIP 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 538-4505
    Mfr. Part No.AD7302BNZ
    MYR30.84
    Each
    units
    - 8 bit 833ksps -0.75LSB ±1LSB 2 Through Hole PDIP 20 2µs Parallel Unipolar External, Internal Single
    RS Stock No. 709-5973
    Mfr. Part No.AD5724AREZ
    MYR51.44
    Each
    units
    Resistor String 12 bit 100ksps 0.08%FSR ±1LSB 4 Surface Mount TSSOP 24 12µs Serial (SPI/QSPI/Microwire) Bipolar, Unipolar External Dual, Single
    RS Stock No. 497-0149
    Mfr. Part No.AD1955ARSZ
    MYR60.70
    Each
    units
    Delta Sigma 24 bit 192ksps ±6%FSR - 2 Surface Mount SSOP 28 - Serial (SPI) Bipolar Internal Single
    RS Stock No. 662-1896
    Mfr. Part No.TLV5618ACD
    MYR58.97
    Each
    units
    Resistor String 12 bit - ±0.6%FSR ±4LSB 2 Surface Mount SOIC 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 877-8720
    Mfr. Part No.AD7224KRZ-18
    MYR57.88
    Each
    units
    R-2R 8 bit - ±3/2LSB ±1LSB 1 Surface Mount SOIC 18 20µs Serial Bipolar, Unipolar Internal Dual, Single
    RS Stock No. 709-9139
    Mfr. Part No.DAC8411IDCKT
    MYR24.60
    Each
    units
    Resistor String 16 bit - 0.2%FSR ±12LSB 1 Surface Mount SC-70 6 10µs Serial (SPI/QSPI/Microwire) Unipolar Supply Single
    RS Stock No. 662-1509
    Mfr. Part No.PCM4104PFBT
    MYR39.89
    Each
    units
    Delta Sigma 24 bit 216ksps 0.5%FSR - 4 Surface Mount TQFP 48 - Serial (SPI) Bipolar External Single