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庫存編號 709-4945
    製造零件編號AD7849CNZ
    HK$435.00
    單位
    R-2R, Resistor String 16 bit 143ksps ±16LSB ±8LSB 1 Through Hole PDIP 20 10µs Serial (SPI) Bipolar, Unipolar External Dual
    RS庫存編號 522-9896
    製造零件編號AD7541AKNZ
    HK$341.89
    單位
    R-2R, Resistor String 12 bit - ±5LSB ±0.5LSB 1 Through Hole PDIP 18 0.6µs Parallel - External Single
    RS庫存編號 522-8578
    製造零件編號AD766JNZ
    HK$468.92
    單位
    Current Steering 16 bit 390ksps ±2%FSR - 1 Through Hole PDIP 16 1.5µs Serial (SPI) Bipolar Internal Dual
    RS庫存編號 522-8590
    製造零件編號AD7226KNZ
    HK$694.89
    單位
    R-2R, Resistor String 8 bit 143ksps ±1.5LSB ±1LSB 4 Through Hole PDIP 20 20µs Parallel Unipolar External Dual, Single
    RS庫存編號 523-0004
    製造零件編號AD420ANZ-32
    HK$395.27
    單位
    Delta Sigma 16 bit 400sps - ±0.012%FSR 1 Through Hole PDIP 24 3000µs Serial (SPI/Microwire) Unipolar External, Internal Single
    RS庫存編號 697-7445
    製造零件編號AD9708ARUZ
    HK$105.21
    單位
    Segmented 8 bit 125Msps ±10%FSR ±0.5LSB 1 Surface Mount TSSOP 28 0.035µs Parallel - External, Internal Single
    RS庫存編號 709-4790
    製造零件編號AD5662BRMZ-1
    HK$80.48
    單位
    Resistor String 16 bit 1.2Msps ±1.5%FSR ±16LSB 1 Surface Mount MSOP 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS庫存編號 378-2143
    製造零件編號DAC902E
    HK$172.26
    單位
    Segmented 12 bit 200Msps ±10%FSR ±2.5LSB 1 Surface Mount TSSOP 28 0.03µs Parallel Unipolar External, Internal Single
    RS庫存編號 158-1981
    製造零件編號AD5662ARJZ-2REEL7
    HK$52.632
    個 (在毎卷:3000)
    單位
    Resistor String 16 bit 1.2Msps ±1.5%FSR ±32LSB 1 Surface Mount SOT-23 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS庫存編號 806-5513
    製造零件編號AD5791BRUZ
    HK$1,137.25
    單位
    R-2R, Resistor String 20 bit - ±21LSB ±1LSB 1 Surface Mount TSSOP 20 1µs Serial (SPI) Bipolar External, Internal Dual
    RS庫存編號 162-4167
    製造零件編號DAC7551IDRNT
    HK$20.796
    個 (在毎卷:250)
    單位
    Resistor String 12 bit 500ksps ±0.5%FSR ±1LSB 1 Surface Mount USON 12 5µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS庫存編號 806-5367
    製造零件編號AD5541ABRMZ
    HK$189.73
    單位
    Current Steering 16 bit - ±1LSB ±1LSB 2 Surface Mount MSOP 10 1µs Serial (SPI/QSPI/Microwire) Bipolar, Unipolar External, Internal Single
    RS庫存編號 145-9159
    製造零件編號MCP48FVB01-E/UN
    BrandMicrochip
    HK$7.186
    毎管:100 個
    單位
    Resistor String 8 bit - 4.5LSB 0.5LSB 1 Surface Mount MSOP 10 7.8µs Serial (SPI) Bipolar Internal Single
    RS庫存編號 709-1577
    製造零件編號AD5662ARJZ-2REEL7
    HK$68.26
    單位
    Resistor String 16 bit 1.2Msps ±1.5%FSR ±32LSB 1 Surface Mount SOT-23 8 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS庫存編號 522-8556
    製造零件編號AD669ANZ
    HK$539.50
    單位
    Current Steering 16 bit 167ksps ±0.15%FSR ±4LSB 1 Through Hole PDIP 28 13µs Parallel Bipolar, Unipolar External, Internal Dual
    RS庫存編號 523-7235
    製造零件編號AD9754ARUZ
    HK$219.72
    單位
    - 14 bit 125Msps ±5%FSR ±3LSB 1 Surface Mount TSSOP 28 0.035µs Parallel - External, Internal Single
    RS庫存編號 916-3670
    製造零件編號MCP48FVB01-E/UN
    BrandMicrochip
    HK$7.811
    /個 (每包:10個)
    單位
    Resistor String 8 bit - 4.5LSB 0.5LSB 1 Surface Mount MSOP 10 7.8µs Serial (SPI) Bipolar Internal Single
    RS庫存編號 389-316
    製造零件編號DAC7551IDRNT
    HK$44.23
    單位
    Resistor String 12 bit 500ksps ±0.5%FSR ±1LSB 1 Surface Mount USON 12 5µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS庫存編號 522-8483
    製造零件編號AD7243ANZ
    HK$286.86
    單位
    R-2R, Resistor String 12 bit 300ksps ±6LSB ±1LSB 1 Through Hole PDIP 16 10µs Serial (SPI) Bipolar, Unipolar External, Internal Dual, Single
    RS庫存編號 506-1735
    製造零件編號LTC2620CGN#PBF
    HK$165.39
    單位
    - 12 bit - ±0.7%FSR ±4LSB 8 Surface Mount SSOP 16 7µs Serial (SPI/Microwire) Unipolar External Single