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. 191-3979
    Mfr. Part No.MAX506BCPP+
    TWD493.40
    Each (In a Tube of 18)
    units
    R-2R 8 bit - ±14mV - 4 Through Hole PDIP 20 6µs Parallel Bipolar, Unipolar External Single
    New
    RS Stock No. 208-8494
    Mfr. Part No.DAC104S085CIMM/NOPB
    TWD168.00
    Each (In a Pack of 2)
    units
    - 10 bit - - - 4 Surface Mount VSSOP 10 - - - - -
    RS Stock No. 522-9509
    Mfr. Part No.AD7541AJNZ
    TWD781.00
    Each
    units
    R-2R, Resistor String 12 bit - ±8LSB ±1LSB 1 Through Hole PDIP 18 0.6µs Parallel - External Single
    RS Stock No. 709-6225
    Mfr. Part No.AD7243BNZ
    TWD882.00
    Each
    units
    R-2R, Resistor String 12 bit 300ksps ±6LSB ±0.5LSB 1 Through Hole PDIP 16 10µs Serial (SPI) Bipolar, Unipolar External, Internal Dual, 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. 191-3364
    Mfr. Part No.MAX5250BCAP+
    TWD370.00
    Each
    units
    R-2R 10 bit - - ±1LSB 4 Surface Mount SSOP 20 10µs SPI Serial Bipolar, Unipolar External Single
    RS Stock No. 190-4645
    Mfr. Part No.MAX5725BAUP+
    TWD258.80
    Each (In a Tube of 74)
    units
    - 12 bit - ±0.5%FSR ±1LSB 8 Surface Mount TSSOP 20 4.5µs 4-Wire Serial, Microwire, Serial (DSP), SPI/QSPI Bipolar, Unipolar External, Internal Single
    RS Stock No. 708-9987
    Mfr. Part No.AD7835ASZ
    TWD1,937.00
    Each
    units
    R-2R, Resistor String 14 bit 100ksps ±5mV ±2LSB 4 Surface Mount MQFP 44 10µs Parallel Bipolar, Unipolar External Dual
    RS Stock No. 887-7316
    Mfr. Part No.MCP4725A0T-E/CH
    BrandMicrochip
    TWD26.10
    Each (On a Reel of 3000)
    units
    Resistor String 12 bit - ±2%FSR ±14.5LSB 1 Surface Mount SOT-23A 6 6µs Serial (I2C) Unipolar External Single
    RS Stock No. 538-4505
    Mfr. Part No.AD7302BNZ
    TWD270.00
    Each
    units
    - 8 bit 833ksps -0.75LSB ±1LSB 2 Through Hole PDIP 20 2µs Parallel Unipolar External, Internal Single
    RS Stock No. 158-0461
    Mfr. Part No.AD5450YUJZ-REEL7
    TWD90.60
    Each (On a Reel of 3000)
    units
    R-2R, Resistor String 8 bit 2.7Msps ±0.25LSB ±0.25LSB 1 Surface Mount TSOT 8 0.11µs Serial (SPI/QSPI/Microwire) - External Single
    RS Stock No. 662-1710
    Mfr. Part No.PCM1755DBQ
    TWD123.00
    Each
    units
    Delta Sigma 24 bit 192ksps ±6%FSR ±0.5dB 2 Surface Mount SSOP 16 - Serial (SPI) Bipolar - 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. 761-9125
    Mfr. Part No.LTC1655CS8#PBF
    TWD668.00
    Each
    units
    R-2R, Resistor String 16 bit 750kHz ±1LSB ±20LSB 1 Surface Mount SOIC 8 10µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 796-8830
    Mfr. Part No.AD5317RBRUZ
    TWD234.00
    Each
    units
    Resistor String 10 bit - ±0.1%FSR ±0.12LSB 4 Surface Mount TSSOP 16 7µs Serial (SPI) Unipolar External Single
    RS Stock No. 190-4623
    Mfr. Part No.MAX518BESA+
    TWD185.90
    Each (In a Tube of 100)
    units
    R-2R 8 bit - ±20mV - 2 Surface Mount SO 8 6µs Serial (I2C) Unipolar External Single
    RS Stock No. 538-4381
    Mfr. Part No.AD421BNZ
    TWD622.00
    Each
    units
    Delta Sigma 16 bit 125sps ±0.2%FSR ±0.01%FSR 1 Through Hole PDIP 16 8000µs Serial (SPI) - External, Internal Single
    RS Stock No. 662-1931
    Mfr. Part No.TLV5624CD
    TWD155.00
    Each
    units
    Resistor String 8 bit 233ksps ±0.6%FSR ±0.5LSB 1 Surface Mount SOIC 8 7µs Serial (SPI/QSPI/Microwire) Unipolar External, Internal Single
    RS Stock No. 190-4642
    Mfr. Part No.MAX5523EUA+
    TWD151.90
    Each (In a Tube of 50)
    units
    - 10 bit - - ±4LSB 2 Surface Mount μMAX 8 660µs Microwire, Serial (3 Wire), SPI/QSPI Bipolar, Unipolar Internal Single
    RS Stock No. 819-7253
    Mfr. Part No.AD9716BCPZ
    TWD657.00
    Each
    units
    Segmented 12 bit 125Msps ±2%FSR ±0.01LSB 2 Surface Mount LFCSP VQ 40 - Serial (SPI) - - Single