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. 191-4971
    Mfr. Part No.MAX529CAG+
    TWD269.00
    Each (In a Pack of 2)
    units
    R-2R 8 bit - ±1/2LSB - 8 Surface Mount SSOP 24 1µs Serial (SPI) Unipolar External Single
    RS Stock No. 151-3086
    Mfr. Part No.LTC2631CTS8-LZ12#TRMPBF
    TWD83.10
    Each (On a Reel of 500)
    units
    - 12 bit - ±0.4%FSR ±1LSB 1 Surface Mount TSOT-23 8 4.6µs Serial (I2C) - External, Internal Single
    RS Stock No. 191-5292
    Mfr. Part No.MAX528CAG+
    TWD318.10
    Each (In a Tube of 58)
    units
    R-2R 8 bit - ±1/2LSB - 8 Surface Mount SSOP 24 3µs Serial (3 Wire) - External Single
    RS Stock No. 922-2622
    Mfr. Part No.DAC8541Y/250
    TWD168.90
    Each (On a Reel of 250)
    units
    Resistor String 16 bit 100ksps -0.8%FSR ±0.098%FSR 1 Surface Mount TQFP 32 10µs Parallel Unipolar External Single
    RS Stock No. 709-5967
    Mfr. Part No.AD569JNZ
    TWD2,118.00
    Each
    units
    Resistor String 16 bit - ±0.75mV ±0.04%FSR 1 Through Hole PDIP 28 6µs Parallel Bipolar, Unipolar External Dual
    RS Stock No. 192-2711
    Mfr. Part No.MAX549ACUA+
    TWD161.50
    Each (In a Pack of 2)
    units
    R-2R, Resistor String 8 bit - ±1LSB - 2 Surface Mount μMAX 8 4µs Serial (SPI) Unipolar External Single
    RS Stock No. 191-3982
    Mfr. Part No.MAX515ESA+
    TWD173.00
    Each (In a Tube of 100)
    units
    R-2R 10 bit - - ±0.5LSB 1 Surface Mount SOIC 8 25µs - Bipolar, Unipolar External Single
    RS Stock No. 709-4866
    Mfr. Part No.AD7247KRZ
    TWD1,442.00
    Each
    units
    R-2R, Resistor String 12 bit - ±5LSB ±0.5LSB 2 Surface Mount SOIC W 24 10µs Parallel Bipolar, Unipolar External, Internal Dual, Single
    RS Stock No. 378-2143
    Mfr. Part No.DAC902E
    TWD526.00
    Each
    units
    Segmented 12 bit 200Msps ±10%FSR ±2.5LSB 1 Surface Mount TSSOP 28 0.03µs Parallel Unipolar External, Internal Single
    RS Stock No. 190-5389
    Mfr. Part No.MAX5216BGUA+
    TWD164.80
    Each (In a Pack of 5)
    units
    String DAC 16 bit - - ±8LSB 1 Surface Mount μMAX 8 18µs SPI Serial Unipolar External Single
    RS Stock No. 165-2215
    Mfr. Part No.MCP4706A3T-E/CH
    BrandMicrochip
    TWD19.30
    Each (On a Reel of 3000)
    units
    Resistor String 8 bit - 5.2LSB 0.907LSB 1 Surface Mount SOT-23 6 6µs Serial (I2C) Bipolar External Single
    RS Stock No. 823-7926
    Mfr. Part No.MCP4811-E/SN
    BrandMicrochip
    TWD57.60
    Each (In a Pack of 5)
    units
    Resistor String 10 bit - - 3.5LSB 1 Surface Mount SOIC 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 412-961
    Mfr. Part No.AD5321BRMZ
    TWD303.00
    Each
    units
    Resistor String 12 bit 125ksps ±1.25%FSR ±16LSB 1 Surface Mount MSOP 8 10µs Serial (I2C) Unipolar External Single
    RS Stock No. 806-5513
    Mfr. Part No.AD5791BRUZ
    TWD3,713.00
    Each
    units
    R-2R, Resistor String 20 bit - ±21LSB ±1LSB 1 Surface Mount TSSOP 20 1µs Serial (SPI) Bipolar External, Internal Dual
    RS Stock No. 851-6881
    Mfr. Part No.LTC2641CMS8-16#PBF
    TWD504.00
    Each
    units
    - 16 bit - - ±2LSB 1 Surface Mount MSOP 8 1µs Serial (SPI/Microwire) Bipolar - Single
    RS Stock No. 162-4169
    Mfr. Part No.DAC7611P
    TWD289.30
    Each (In a Tube of 50)
    units
    R-2R, Resistor String 12 bit 132ksps - ±2LSB 1 Through Hole PDIP 8 7µs Serial (SPI) Unipolar Internal Single
    RS Stock No. 165-1905
    Mfr. Part No.MCP4726A1T-E/CH
    BrandMicrochip
    TWD26.10
    Each (On a Reel of 3000)
    units
    Resistor String 12 bit - 82LSB 14.5LSB 1 Surface Mount SOT-23 6 6µs Serial (I2C) Bipolar External Single
    RS Stock No. 183-2083
    Mfr. Part No.AD7840JNZ
    TWD1,083.00
    Each
    units
    - 14 bit - ±10LSB ±2LSB 1 Surface Mount DIP 24 4µs Parallel Bipolar External Dual
    RS Stock No. 165-4144
    Mfr. Part No.MCP47FEB21A0-E/ST
    BrandMicrochip
    TWD38.30
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - 4.5LSB ±0.5LSB 1 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 411-918
    Mfr. Part No.LTC1665CGN#PBF
    TWD249.00
    Each
    units
    - 8 bit - ±4LSB ±1LSB 8 Surface Mount SSOP 16 30µs Serial Bipolar External Single