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. 545-7170
    Mfr. Part No.LTC1450CN#PBF
    MYR62.49
    Each
    units
    Resistor String 12 bit - - ±4LSB 1 Through Hole PDIP 24 14µs Parallel Unipolar External, Internal Single
    RS Stock No. 162-4881
    Mfr. Part No.TLV5623ID
    MYR12.375
    Each (In a Tube of 75)
    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. 169-8392
    Mfr. Part No.CS43L22-CNZ
    MYR17.88
    Each (In a Tube of 100)
    units
    Delta Sigma 24 bit 96ksps - - 1 Surface Mount QFN 40 - Serial Bipolar Internal Single
    RS Stock No. 761-9147
    Mfr. Part No.LTC1663CS5#TRMPBF
    MYR18.94
    Each
    units
    R-2R, Resistor String 10 bit - ±20LSB ±3LSB 1 Surface Mount TSOT-23 5 30µs Serial - Internal Single
    RS Stock No. 191-4948
    Mfr. Part No.MAX5217BGUA+
    MYR20.22
    Each (In a Pack of 2)
    units
    Resistor String 16 bit - - ±8LSB 1 Surface Mount μMAX 8 18µs - Bipolar, Unipolar External Single
    RS Stock No. 726-3908
    Mfr. Part No.MCP4802-E/MS
    BrandMicrochip
    MYR6.784
    Each (In a Pack of 5)
    units
    Resistor String 8 bit - ±2%FSR 1LSB 2 Surface Mount MSOP 8 4.5µs Serial (SPI) Bipolar Internal Single
    RS Stock No. 157-8506
    Mfr. Part No.DAC08EPZ
    MYR17.534
    Each (In a Tube of 25)
    units
    Current Steering 8 bit 11.8Msps ±1LSB ±0.19%FSR 1 Through Hole PDIP 16 0.15µs Parallel Unipolar External Dual
    RS Stock No. 192-2500
    Mfr. Part No.MAX5302CUA+
    MYR20.85
    Each (In a Pack of 2)
    units
    R-2R, Resistor String 12 bit - ±3LSB ±4LSB 1 Surface Mount μMAX 8 14µs Serial (SPI) Unipolar External Single
    RS Stock No. 151-3294
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    MYR32.96
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    - 12 bit - - ±1LSB 2 Surface Mount TSOT-23 8 4.7µs Serial (I2C) - External, Internal Single
    RS Stock No. 189-7410
    Mfr. Part No.MAX532BCPE+
    MYR85.744
    Each (In a Tube of 25)
    units
    R-2R, Resistor String 12 bit - ±7LSB ±1LSB 2 Through Hole PDIP 16 2.5µs Serial (SPI/QSPI/Microwire) Unipolar External Dual
    RS Stock No. 806-5386
    Mfr. Part No.AD5625RBRUZ-2
    MYR46.99
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    Resistor String 12 bit - ±0.5%FSR ±1LSB 4 Surface Mount TSSOP 14 4.5µs Serial (I2C) Bipolar External, Internal Single
    RS Stock No. 522-9240
    Mfr. Part No.AD7542JNZ
    MYR188.35
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    R-2R, Resistor String 12 bit - ±4LSB ±1LSB 1 Through Hole PDIP 16 2µs Parallel - External Single
    RS Stock No. 183-2203
    Mfr. Part No.AD5340BRUZ
    MYR41.88
    Each
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    - 12 bit - - - 1 Surface Mount TSSOP 24 8µs Parallel Bipolar External Single
    RS Stock No. 192-2215
    Mfr. Part No.MAX536BCWE+
    MYR127.023
    Each (In a Tube of 46)
    units
    R-2R, Resistor String 12 bit - ±1.5LSB ±1LSB 4 Surface Mount SOIC 16 3µs Serial (SPI) Unipolar External Single
    RS Stock No. 865-2218
    Mfr. Part No.AD5761RBRUZ
    MYR51.92
    Each
    units
    R-2R 16 bit - ±13mV ±2LSB 1 Surface Mount TSSOP 16 12.5µs Parallel & Serial (LVDS/SPI) Bipolar, Unipolar External Single
    RS Stock No. 538-4909
    Mfr. Part No.AD5391BSTZ-5
    MYR171.54
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    Resistor String 12 bit 167ksps ±0.06%FSR ±1LSB 16 Surface Mount LQFP 52 8µs Serial (I2C/SPI/QSPI/Microwire) Unipolar External, Internal Single
    New
    RS Stock No. 210-8596
    Mfr. Part No.AD5677RBCPZ-2
    MYR187.18
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    Mfr. Part No.AD5334BRUZ
    MYR47.08
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    Resistor String 8 bit 167ksps ±1%FSR ±1LSB 4 Surface Mount TSSOP 24 8µs Parallel Unipolar External Single
    RS Stock No. 545-7287
    Mfr. Part No.LTC1454CN#PBF
    MYR66.04
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    - 12 bit - - ±4.5LSB 2 Through Hole PDIP 16 14µs Serial (SPI) Unipolar External, Internal Single
    RS Stock No. 191-3982
    Mfr. Part No.MAX515ESA+
    MYR25.464
    Each (In a Tube of 100)
    units
    R-2R 10 bit - - ±0.5LSB 1 Surface Mount SOIC 8 25µs - Bipolar, Unipolar External Single