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. 538-8260
    Mfr. Part No.AD5330BRUZ
    $9.67
    Each
    units
    Resistor String 8 bit 167ksps ±1%FSR ±1LSB 1 Surface Mount TSSOP 20 8µs Parallel Unipolar External Single
    RS Stock No. 876-7199
    Mfr. Part No.MCP4921-E/SN
    BrandMicrochip
    $2.216
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - 1%FSR +12LSB 1 Surface Mount SOIC 8 4.5µs Serial (SPI/Microwire) Bipolar External Single
    RS Stock No. 923-3524
    Mfr. Part No.DAC7625UB
    $31.90
    Each (In a Tube of 20)
    units
    R-2R, Resistor String 12 bit 100ksps ±8LSB ±1LSB 4 Surface Mount SOIC 28 10µs Parallel Bipolar, Unipolar External Dual, Single
    RS Stock No. 121-8521
    Mfr. Part No.TLC7226CN
    $7.931
    Each (In a Tube of 20)
    units
    - - - - - - - - - - - - - -
    RS Stock No. 921-5223
    Mfr. Part No.TLV5631IPW
    $15.624
    Each (In a Tube of 70)
    units
    Resistor String 10 bit 283ksps ±0.6%FSR ±2LSB 8 Surface Mount TSSOP 20 7µs Serial (SPI) Unipolar External Single
    RS Stock No. 876-7256
    Mfr. Part No.MCP4922-E/SL
    BrandMicrochip
    $3.265
    Each (In a Tube of 57)
    units
    Resistor String 12 bit - 1%FSR ±12LSB 2 Surface Mount SOIC 14 4.5µs Serial (SPI/Microwire) Bipolar External Single
    RS Stock No. 697-6887
    Mfr. Part No.AD5311BRMZ
    $11.02
    Each
    units
    Resistor String 10 bit 143ksps ±1.25%FSR ±4LSB 1 Surface Mount MSOP 8 9µs Serial (I2C) Unipolar External Single
    RS Stock No. 346-7030
    Mfr. Part No.TLC7226CN
    $8.87
    Each
    units
    R-2R, Resistor String 8 bit 143ksps ±2LSB ±1LSB 4 Through Hole PDIP 20 20µs Parallel Bipolar, Unipolar External Dual, Single
    RS Stock No. 145-9358
    Mfr. Part No.MCP4821-E/MS
    BrandMicrochip
    $2.544
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - ±2%FSR 12LSB 1 Surface Mount MSOP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 716-5820
    Mfr. Part No.CS4334-KSZ
    $4.135
    Each (In a Pack of 2)
    units
    Delta Sigma 24 bit 96ksps ±5%FSR - 2 Surface Mount SOIC 8 - Serial Bipolar Internal Single
    RS Stock No. 889-6048
    Mfr. Part No.MCP4821-E/SN
    BrandMicrochip
    $2.709
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - ±2%FSR 12LSB 1 Surface Mount SOIC 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 724-0126
    Mfr. Part No.MCP4821-E/MS
    BrandMicrochip
    $4.19
    Each
    units
    Resistor String 12 bit - ±2%FSR 12LSB 1 Surface Mount MSOP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 402-803
    Mfr. Part No.MCP4921-E/SN
    BrandMicrochip
    $3.005
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - 1%FSR +12LSB 1 Surface Mount SOIC 8 4.5µs Serial (SPI/Microwire) Bipolar External Single
    RS Stock No. 402-910
    Mfr. Part No.MCP4922-E/SL
    BrandMicrochip
    $4.695
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - 1%FSR ±12LSB 2 Surface Mount SOIC 14 4.5µs Serial (SPI/Microwire) Bipolar External Single
    RS Stock No. 786-3353
    Mfr. Part No.AD5421BREZ
    $20.23
    Each
    units
    - 16 bit - 0.107%FSR +1LSB 1 Surface Mount TSSOP 28 50µs Serial - Internal Single
    RS Stock No. 738-6682
    Mfr. Part No.MCP4821-E/SN
    BrandMicrochip
    $3.855
    Each (In a Pack of 2)
    units
    Resistor String 12 bit - ±2%FSR 12LSB 1 Surface Mount SOIC 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 169-8388
    Mfr. Part No.CS4334-KSZ
    $3.15
    Each (In a Tube of 100)
    units
    Delta Sigma 24 bit 96ksps ±5%FSR - 2 Surface Mount SOIC 8 - Serial Bipolar Internal Single
    RS Stock No. 732-1395
    Mfr. Part No.TLV5631IPW
    $17.70
    Each
    units
    Resistor String 10 bit 283ksps ±0.6%FSR ±2LSB 8 Surface Mount TSSOP 20 7µs Serial (SPI) Unipolar External Single
    RS Stock No. 884-6955
    Mfr. Part No.LTC1660CN#PBF
    $17.78
    Each
    units
    - 10 bit - ±15LSB ±2.5LSB 8 Through Hole PDIP 16 30µs Serial Bipolar External, Internal Single
    RS Stock No. 894-9007
    Mfr. Part No.AD5671RBRUZ
    $18.94
    Each
    units
    - 12 bit - ±0.14%FSR ±1LSB 8 Surface Mount TSSOP 20 8µs Serial (I2C) - Internal Single