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. 190-4653
    Mfr. Part No.MAX5822LEUA+
    TWD303.80
    Each (In a Tube of 50)
    units
    String DAC 12 bit - - ±16LSB 2 Surface Mount μMAX 8 4µs - - External Single
    RS Stock No. 620-0284
    Mfr. Part No.DAC8554IPW
    TWD471.00
    Each
    units
    Resistor String 16 bit 200ksps ±0.5%FSR ±12LSB 4 Surface Mount TSSOP 16 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 178-1174
    Mfr. Part No.BU2507FV-E2
    BrandROHM
    TWD139.00
    Each (In a Pack of 5)
    units
    R-2R 10 bit - 1 (Differential) LSB, 3.5 (Integral) LSB 3.5LSB 6 Surface Mount SSOP-B 14 20µs - - Internal Single
    RS Stock No. 522-8635
    Mfr. Part No.AD7542KNZ
    TWD1,557.00
    Each
    units
    R-2R, Resistor String 12 bit - ±4LSB ±0.5LSB 1 Through Hole PDIP 16 2µs Parallel - External Single
    RS Stock No. 190-4634
    Mfr. Part No.MAX5259EEE+
    TWD97.30
    Each (In a Tube of 100)
    units
    Resistor String 8 bit - - ±1LSB 8 Surface Mount QSOP 16 10µs SPI Serial Unipolar External Single
    RS Stock No. 810-7714
    Mfr. Part No.AD5683RBRMZ
    TWD282.00
    Each
    units
    Resistor String 16 bit - ±0.075%FSR ±2LSB 1 Surface Mount MSOP 10 7µs Serial (SPI) - Internal Single
    RS Stock No. 178-9151
    Mfr. Part No.TLC7524CDR
    TWD111.90
    Each (In a Tube of 40)
    units
    R-2R, Resistor String 8 bit 10Msps ±2.5LSB ±0.5LSB 1 Surface Mount SOIC 16 0.1µs Parallel - External Single
    RS Stock No. 183-1851
    Mfr. Part No.AD1851RZ
    TWD580.00
    Each
    units
    - 16 bit - - - 1 Surface Mount SOIC 16 1.5µs PCM Bipolar Internal Dual
    RS Stock No. 809-9128
    Mfr. Part No.ADV7127JRUZ240
    TWD733.00
    Each
    units
    Segmented 10 bit 240Msps - ±1LSB 1 Surface Mount TSSOP 24 - Parallel - External, Internal Single
    RS Stock No. 796-8855
    Mfr. Part No.AD5696ARUZ
    TWD573.00
    Each
    units
    Resistor String 16 bit - ±0.2%FSR ±8LSB 4 Surface Mount TSSOP 16 8µs Serial (I2C) Unipolar External Single
    RS Stock No. 461-6306
    Mfr. Part No.DAC8532IDGK
    TWD476.00
    Each
    units
    Resistor String 16 bit 93ksps -1%FSR ±0.099%FSR 2 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 820-9261
    Mfr. Part No.AD5542AARUZ
    TWD477.00
    Each
    units
    R-2R, Resistor String 16 bit - - ±2LSB 1 Surface Mount TSSOP 16 1µs Serial (SPI/QSPI) Bipolar, Unipolar External Single
    RS Stock No. 183-2203
    Mfr. Part No.AD5340BRUZ
    TWD346.00
    Each
    units
    - 12 bit - - - 1 Surface Mount TSSOP 24 8µs Parallel Bipolar External Single
    RS Stock No. 190-5448
    Mfr. Part No.MAX5312EAE+
    TWD361.00
    Each
    units
    DAC Ladder 12 bit - - ±1LSB 1 Surface Mount SSOP 16 10µs Microwire, Serial, SPI/QSPI Bipolar, Unipolar External Dual, Single
    RS Stock No. 662-1690
    Mfr. Part No.PCM1739E
    TWD307.00
    Each
    units
    Delta Sigma 24 bit 192ksps ±3%FSR - 2 Surface Mount SSOP 28 - Serial (SPI) Bipolar - Single
    RS Stock No. 806-5430
    Mfr. Part No.AD5685RBRUZ
    TWD483.00
    Each
    units
    Resistor String 14 bit - ±0.2%FSR ±1LSB 4 Surface Mount TSSOP 16 8µs Serial (SPI) - Internal Single
    RS Stock No. 922-2625
    Mfr. Part No.DAC7513N/250
    TWD127.70
    Each (On a Reel of 250)
    units
    Resistor String 12 bit 95ksps -1.25%FSR ±8LSB 1 Surface Mount SOT-23 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 192-2449
    Mfr. Part No.MX7226KN+
    TWD658.00
    Each
    units
    R-2R, Resistor String 8 bit - ±1.5LSB ±1LSB 4 Through Hole PDIP 20 4µs Parallel Unipolar External Dual, Single
    RS Stock No. 912-8242
    Mfr. Part No.AD5612BKSZ-2500RL7
    TWD63.40
    Each (On a Reel of 500)
    units
    Resistor String 10 bit - 0.5mV ±0.5LSB 1 Surface Mount SC-70 6 10µs Serial (I2C) Bipolar Internal Single
    RS Stock No. 761-9339
    Mfr. Part No.LTC2622IMS8#PBF
    TWD271.00
    Each
    units
    R-2R, Resistor String 12 bit 50MHz ±0.5LSB ±4LSB 2 Surface Mount MSOP 8 10µs Serial (SPI) - External Single