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
    TWD195.10
    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
    TWD227.00
    Each
    units
    Delta Sigma 32 bit 384ksps - - 2 Surface Mount TSSOP 28 - Serial (SPI) Bipolar Internal Single
    RS Stock No. 647-9929
    Mfr. Part No.DAC0808LCM/NOPB
    TWD85.00
    Each (In a Pack of 5)
    units
    R-2R, Resistor String 8 bit - - ±0.19%FSR 1 Surface Mount SOIC 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 146-0302
    Mfr. Part No.MCP47FEB12A0-E/ST
    BrandMicrochip
    TWD47.80
    Each (In a Tube of 100)
    units
    Resistor String 10 bit - 4.5LSB ±0.5LSB 2 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 879-3246
    Mfr. Part No.MCP47FEB12A0-E/ST
    BrandMicrochip
    TWD63.00
    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. 356-7045
    Mfr. Part No.TLC5620CD
    TWD224.00
    Each
    units
    Resistor String 8 bit 48ksps ±60mV ±1LSB 4 Surface Mount SOIC 14 10µs Serial (SPI) Unipolar External Single
    RS Stock No. 145-0836
    Mfr. Part No.TLC5620CD
    TWD186.00
    Each (In a Tube of 50)
    units
    Resistor String 8 bit 48ksps ±60mV ±1LSB 4 Surface Mount SOIC 14 10µs Serial (SPI) Unipolar External Single
    RS Stock No. 660-5112
    Mfr. Part No.DAC712U
    TWD1,182.00
    Each
    units
    R-2R, Resistor String 16 bit 100ksps ±0.2%FSR ±8LSB 1 Surface Mount SOIC 28 6µs Parallel Bipolar Internal Dual
    RS Stock No. 121-9037
    Mfr. Part No.DAC712U
    TWD1,105.80
    Each (In a Tube of 20)
    units
    R-2R, Resistor String 16 bit 100ksps ±0.2%FSR ±8LSB 1 Surface Mount SOIC 28 6µs Parallel Bipolar Internal Dual
    RS Stock No. 823-0959
    Mfr. Part No.MCP4716A1T-E/CH
    BrandMicrochip
    TWD29.20
    Each (In a Pack of 10)
    units
    Resistor String 10 bit - 20.5LSB 3.625LSB 1 Surface Mount SOT-23 6 6µs Serial (I2C) Bipolar External Single
    RS Stock No. 876-7256
    Mfr. Part No.MCP4922-E/SL
    BrandMicrochip
    TWD79.80
    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. 522-9240
    Mfr. Part No.AD7542JNZ
    TWD1,410.00
    Each
    units
    R-2R, Resistor String 12 bit - ±4LSB ±1LSB 1 Through Hole PDIP 16 2µs Parallel - External Single
    RS Stock No. 662-1912
    Mfr. Part No.TLV5619CDW
    TWD391.00
    Each
    units
    Resistor String 12 bit 1Msps ±0.5%FSR ±4LSB 1 Surface Mount SOIC 20 3µs Parallel Unipolar External Single
    RS Stock No. 162-7120
    Mfr. Part No.TLV5619CDW
    TWD344.30
    Each (In a Tube of 25)
    units
    Resistor String 12 bit 1Msps ±0.5%FSR ±4LSB 1 Surface Mount SOIC 20 3µs Parallel Unipolar External Single
    RS Stock No. 522-9379
    Mfr. Part No.AD7224KNZ
    TWD598.00
    Each
    units
    R-2R, Resistor String 8 bit 143ksps ±1.5LSB ±1LSB 1 Through Hole PDIP 18 20µs Parallel Unipolar External Dual, Single
    RS Stock No. 165-2216
    Mfr. Part No.MCP4716A1T-E/CH
    BrandMicrochip
    TWD22.10
    Each (On a Reel of 3000)
    units
    Resistor String 10 bit - 20.5LSB 3.625LSB 1 Surface Mount SOT-23 6 6µs Serial (I2C) Bipolar External Single
    RS Stock No. 402-910
    Mfr. Part No.MCP4922-E/SL
    BrandMicrochip
    TWD87.00
    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. 522-9026
    Mfr. Part No.AD767JNZ
    TWD1,198.00
    Each
    units
    Current Steering 12 bit - ±0.2%FSR ±1LSB 1 Through Hole PDIP 24 4µs Parallel Bipolar, Unipolar External, Internal Dual
    RS Stock No. 378-1976
    Mfr. Part No.DAC7614U
    TWD633.00
    Each
    units
    R-2R, Resistor String 12 bit 89ksps ±8LSB ±2LSB 4 Surface Mount SOIC 16 10µs Serial Bipolar, Unipolar External Dual, Single
    RS Stock No. 402-803
    Mfr. Part No.MCP4921-E/SN
    BrandMicrochip
    TWD73.50
    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