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. 709-4939
    Mfr. Part No.AD7849ARZ
    TWD666.00
    Each
    units
    R-2R, Resistor String 14 bit 143ksps ±4LSB ±5LSB 1 Surface Mount SOIC W 20 10µs Serial (SPI) Bipolar, Unipolar External Dual
    RS Stock No. 191-5001
    Mfr. Part No.MAX5590BEUG+
    TWD337.00
    Each
    units
    Resistor String 12 bit - - ±4LSB 8 Surface Mount TSSOP 24 3µs - Bipolar, Unipolar External Single
    RS Stock No. 915-6486
    Mfr. Part No.AD5676RBRUZ
    TWD740.00
    Each
    units
    - 16 bit - ±0.14%FSR ±3LSB 8 Surface Mount TSSOP 20 8µs - - Internal Single
    RS Stock No. 796-8852
    Mfr. Part No.AD5694BRUZ
    TWD378.00
    Each
    units
    Resistor String 12 bit - ±0.1%FSR ±1LSB 4 Surface Mount TSSOP 16 7µs Serial (I2C) Unipolar External Single
    RS Stock No. 162-4996
    Mfr. Part No.DAC084S085CIMM/NOPB
    TWD35.60
    Each (On a Reel of 1000)
    units
    Resistor String 8 bit - -0.75%FSR ±0.5LSB 4 Surface Mount MSOP 10 4.5µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 806-5418
    Mfr. Part No.AD5669RARUZ-1
    TWD824.00
    Each
    units
    Resistor String 16 bit - -1%FSR ±32LSB 8 Surface Mount TSSOP 16 7µs Serial (I2C) - Internal Single
    RS Stock No. 190-5121
    Mfr. Part No.MAX5250BCPP+
    TWD477.00
    Each
    units
    R-2R 10 bit - - ±1LSB 4 Surface Mount DIP 20 10µs SPI Serial Bipolar, Unipolar External Single
    RS Stock No. 190-5081
    Mfr. Part No.MAX1257BETM+
    TWD955.00
    Each
    units
    - 12 bit - - ±1LSB 16 Surface Mount QFN-EP 48 2µs - Bipolar, Unipolar Internal Single
    RS Stock No. 183-2055
    Mfr. Part No.AD7228ABRZ
    TWD1,283.00
    Each
    units
    Resistor String 8 bit - ±4LSB - 8 Surface Mount SOIC 24 7µs Parallel Unipolar External Single
    RS Stock No. 879-3261
    Mfr. Part No.MCP47FEB21A0-E/ST
    BrandMicrochip
    TWD54.80
    Each (In a Pack of 5)
    units
    Resistor String 12 bit - 4.5LSB ±0.5LSB 1 Surface Mount TSSOP 8 6µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 709-6506
    Mfr. Part No.AD7543KNZ
    TWD1,354.00
    Each
    units
    R-2R, Resistor String 12 bit - ±13.5LSB ±0.5LSB 1 Through Hole PDIP 16 2µs Serial - External Single
    RS Stock No. 921-5214
    Mfr. Part No.DAC8811IBDGKT
    TWD355.80
    Each (On a Reel of 250)
    units
    R-2R, Resistor String 16 bit 2Msps ±4mV ±2LSB 1 Surface Mount MSOP 8 0.5µs Serial (SPI) Unipolar External Single
    RS Stock No. 820-9258
    Mfr. Part No.AD5763CSUZ
    TWD804.00
    Each
    units
    R-2R 16 bit - ±1LSB ±2LSB 2 Surface Mount TQFP 32 10µs Serial (SPI/QSPI) Bipolar External Dual
    RS Stock No. 462-5495
    Mfr. Part No.TLV5623ID
    TWD128.00
    Each
    units
    Resistor String 8 bit 102ksps ±0.6%FSR ±0.5LSB 1 Surface Mount SOIC 8 20µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 709-2481
    Mfr. Part No.PCM1770PW
    TWD146.00
    Each
    units
    Delta Sigma 24 bit 48ksps ±8%FSR - 2 Surface Mount TSSOP 16 - Serial (SPI) Bipolar - Single
    RS Stock No. 709-6203
    Mfr. Part No.AD7228ACRZ
    TWD1,424.00
    Each
    units
    R-2R, Resistor String 8 bit 200ksps ±2LSB ±2LSB 8 Surface Mount SOIC W 24 7µs Parallel Unipolar External Dual, Single
    New
    RS Stock No. 210-5519
    Mfr. Part No.MAX22007ETN+
    TWD237.00
    Each (In a Tray of 260)
    units
    - 12 bit - - - 4 Surface Mount TQFN-EP 56 - Serial (I2C/SPI) - - -
    RS Stock No. 378-2143
    Mfr. Part No.DAC902E
    TWD487.00
    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. 427-262
    Mfr. Part No.DAC8420FSZ
    TWD2,347.00
    Each
    units
    - 12 bit 125ksps ±8LSB ±4LSB 4 Surface Mount SOIC W 16 13µs Serial (SPI) Bipolar, Unipolar External Dual, Single
    RS Stock No. 100-3823
    Mfr. Part No.DAC7612U
    TWD317.80
    Each (In a Tube of 75)
    units
    R-2R, Resistor String 12 bit 130ksps - ±2LSB 2 Surface Mount SOIC 8 7µs Serial (SPI) Unipolar Internal Single