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
    New
    RS Stock No. 210-8592
    Mfr. Part No.AD5677RBCPZ-1
    TWD1,157.30
    Each (In a Tray of 490)
    units
    - 16 bit - - - 16 Surface Mount LFCSP 28 - Serial (I2C) - - -
    RS Stock No. 820-9435
    Mfr. Part No.AD9750ARZ
    TWD426.00
    Each
    units
    Segmented 10 bit 125Msps - ±1LSB 1 Surface Mount SOIC 28 35ns Parallel Bipolar, Unipolar External Single
    RS Stock No. 162-8300
    Mfr. Part No.PCM1780DBQ
    TWD56.20
    Each (In a Tube of 75)
    units
    Delta Sigma 24 bit 192ksps - - 8 Surface Mount SSOP 16 - Serial Bipolar - Single
    RS Stock No. 538-8282
    Mfr. Part No.AD5341BRUZ
    TWD310.00
    Each
    units
    Resistor String 12 bit 125ksps ±1%FSR ±16LSB 1 Surface Mount TSSOP 20 10µs Parallel Unipolar External Single
    RS Stock No. 197-7114
    Mfr. Part No.DAC7571IDBVT
    TWD89.40
    Each (In a Pack of 5)
    units
    - 12 bit - - - 1 Surface Mount SOT-23 6 - - - - -
    RS Stock No. 651-2098
    Mfr. Part No.DAC101S101CIMM/NOPB
    TWD56.60
    Each (In a Pack of 5)
    units
    Resistor String 10 bit - -1%FSR ±2.8LSB 1 Surface Mount MSOP 8 7.5µs Serial (SPI/QSPI/Microwire) Unipolar Supply Single
    RS Stock No. 759-0695
    Mfr. Part No.AD420ARZ-32
    TWD1,001.00
    Each
    units
    Delta Sigma 16 bit 400sps - ±0.012%FSR 1 Surface Mount SOIC 24 3ns Serial (SPI) Bipolar External Single
    RS Stock No. 190-5105
    Mfr. Part No.MAX518BESA+
    TWD237.00
    Each (In a Pack of 2)
    units
    R-2R 8 bit - ±20mV - 2 Surface Mount SO 8 6µs Serial (I2C) Unipolar External Single
    RS Stock No. 522-9212
    Mfr. Part No.AD7533JNZ
    TWD434.00
    Each
    units
    R-2R, Resistor String 10 bit 1.7Msps ±1%FSR ±0.2%FSR 1 Through Hole PDIP 16 0.8µs Parallel - External Single
    RS Stock No. 757-8156
    Mfr. Part No.LTC2600CGN#PBF
    TWD1,177.00
    Each
    units
    R-2R, Resistor String 16 bit - - ±64LSB 8 Surface Mount SSOP 16 10µs Serial - External Single
    RS Stock No. 697-6903
    Mfr. Part No.AD5447YRUZ
    TWD365.00
    Each
    units
    R-2R, Resistor String 12 bit 21.3Msps ±25mV ±1LSB 2 Surface Mount TSSOP 24 0.12µs Parallel - External Single
    RS Stock No. 522-8578
    Mfr. Part No.AD766JNZ
    TWD1,282.00
    Each
    units
    Current Steering 16 bit 390ksps ±2%FSR - 1 Through Hole PDIP 16 1.5µs Serial (SPI) Bipolar Internal Dual
    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. 538-8254
    Mfr. Part No.AD5325BRMZ
    TWD655.00
    Each
    units
    Resistor String 12 bit 125ksps ±1%FSR ±10LSB 4 Surface Mount MSOP 10 10µs Serial (I2C) Unipolar External Single
    RS Stock No. 523-6399
    Mfr. Part No.AD5320BRTZ-500RL7
    TWD224.00
    Each
    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. 162-7102
    Mfr. Part No.TLC7528IN
    TWD151.10
    Each (In a Tube of 20)
    units
    R-2R, Resistor String 8 bit 10Msps 2.5LSB ±0.5LSB 2 Through Hole PDIP 20 0.1µs Parallel - External Single
    RS Stock No. 709-2481
    Mfr. Part No.PCM1770PW
    TWD154.00
    Each
    units
    Delta Sigma 24 bit 48ksps ±8%FSR - 2 Surface Mount TSSOP 16 - Serial (SPI) Bipolar - Single
    RS Stock No. 190-4621
    Mfr. Part No.MAX5134AGUE+
    TWD284.90
    Each (In a Tube of 96)
    units
    Resistor String 16 bit - - -8 → +10LSB 4 Surface Mount TSSOP 16 5µs SPI Serial Bipolar, Unipolar External, Internal Single
    RS Stock No. 288-705
    Mfr. Part No.DAC7802KU
    TWD1,068.00
    Each
    units
    R-2R, Resistor String 12 bit 1.25Msps ±3LSB ±1LSB 2 Surface Mount SOIC 24 0.8µs Parallel - External Single
    RS Stock No. 183-2168
    Mfr. Part No.AD9764ARZ
    TWD637.00
    Each
    units
    - 14 bit - - - 1 Surface Mount SOIC 28 35ns Parallel Bipolar External, Internal Single