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. 146-0329
    Mfr. Part No.MCP48FEB21-E/UN
    BrandMicrochip
    TWD39.10
    Each (In a Tube of 100)
    units
    Resistor String 12 bit - 70LSB 6LSB 1 Surface Mount MSOP 10 7.8µs - Bipolar External, Internal Single
    RS Stock No. 538-5233
    Mfr. Part No.AD5426YRMZ
    TWD186.00
    Each
    units
    R-2R, Resistor String 8 bit 2.5Msps ±10mV ±0.25LSB 1 Surface Mount MSOP 10 0.16µs Serial (SPI/QSPI/Microwire) - 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. 700-3485
    Mfr. Part No.BU2506FV-E2
    BrandROHM
    TWD145.00
    Each
    units
    R-2R, Resistor String 10 bit - ±25mV ±3.5LSB 8 Surface Mount SSOP 20 20µs Serial (SPI) 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. 809-9326
    Mfr. Part No.AD5660BRJZ-2500RL7
    TWD323.00
    Each
    units
    Resistor String 16 bit - ±1%FSR ±1LSB 1 Surface Mount SOT-23 8 10µs Serial (SPI/QSPI/Microwire) Bipolar External, Internal Single
    RS Stock No. 121-8497
    Mfr. Part No.DAC8043U
    TWD297.80
    Each (In a Tube of 75)
    units
    - - - - - - - - - - - - - -
    RS Stock No. 190-5478
    Mfr. Part No.MAX531BESD+
    TWD423.00
    Each
    units
    R-2R 12 bit - - ±1LSB 1 Surface Mount SO 14 25µs SPI Serial Bipolar, Unipolar Internal Single
    RS Stock No. 169-7575
    Mfr. Part No.MAX5717AGSD+
    TWD380.00
    Each
    units
    Resistor Ladder 16 bit - - ±4LSB 1 Surface Mount SOIC 14 0.75µs - Unipolar External Single
    RS Stock No. 786-3353
    Mfr. Part No.AD5421BREZ
    TWD439.00
    Each
    units
    - 16 bit - 0.107%FSR +1LSB 1 Surface Mount TSSOP 28 50µs Serial - Internal Single
    RS Stock No. 822-6685
    Mfr. Part No.LTC2604IGN#PBF
    TWD736.00
    Each
    units
    R-2R 16 bit - 9mV ±64LSB 4 Surface Mount SSOP 16 10µs Serial (SPI) - Internal Single
    RS Stock No. 169-8303
    Mfr. Part No.CS4398-CZZ
    TWD375.80
    Each (In a Tube of 50)
    units
    Delta Sigma 24 bit 216ksps - - 2 Surface Mount TSSOP 28 - Serial Bipolar External, Internal Single
    RS Stock No. 162-6137
    Mfr. Part No.DAC5311IDCKT
    TWD31.80
    Each (On a Reel of 250)
    units
    Resistor String 8 bit - 0.2%FSR ±0.25LSB 1 Surface Mount SC-70 6 10µs Serial (SPI/QSPI/Microwire) Unipolar Supply Single
    RS Stock No. 523-8553
    Mfr. Part No.AD5322BRMZ
    TWD385.00
    Each
    units
    Resistor String 12 bit 125ksps ±1%FSR ±8LSB 2 Surface Mount MSOP 10 10µs Serial (SPI/QSPI/Microwire) Unipolar External Single
    RS Stock No. 758-9585
    Mfr. Part No.AD5024BRUZ
    TWD414.00
    Each
    units
    R-2R, Resistor String 12 bit 125ksps ±0.07%FSR ±1LSB 4 Surface Mount TSSOP 16 8µs Serial (SPI) Bipolar External Single
    RS Stock No. 922-2644
    Mfr. Part No.PCM4104PFBT
    TWD201.10
    Each (On a Reel of 250)
    units
    Delta Sigma 24 bit 216ksps 0.5%FSR - 4 Surface Mount TQFP 48 - Serial (SPI) Bipolar External Single
    RS Stock No. 191-4779
    Mfr. Part No.MAX5136AGTG+
    TWD208.00
    Each (In a Pack of 2)
    units
    Resistor String 16 bit - - ±8LSB 2 Surface Mount TQFN 24 5µs - Bipolar, Unipolar External, Internal Single
    RS Stock No. 191-5070
    Mfr. Part No.MAX506BCPP+
    TWD519.00
    Each
    units
    R-2R 8 bit - ±14mV - 4 Through Hole PDIP 20 6µs Parallel Bipolar, Unipolar External Single
    RS Stock No. 922-2622
    Mfr. Part No.DAC8541Y/250
    TWD185.50
    Each (On a Reel of 250)
    units
    Resistor String 16 bit 100ksps -0.8%FSR ±0.098%FSR 1 Surface Mount TQFP 32 10µs Parallel Unipolar External Single
    RS Stock No. 709-5998
    Mfr. Part No.AD5754AREZ
    TWD762.00
    Each
    units
    Resistor String 16 bit 100ksps 0.08%FSR ±16LSB 4 Surface Mount TSSOP 24 12µs Serial (SPI/QSPI/Microwire) Bipolar, Unipolar External Dual, Single