General Purpose DACs

Digital-to-analog converter (DAC) are devices that convert digital signals into an analog output signal for other devices to recognise.

DACs are used most in the audio industry. The digital audio signal (binary code) gets converted into analog signal ready for the next device or headphone amplifier to pick up. Other uses for DACs include use in TVs (televisions) and smartphones, they typically convert digital video into analog. You can also use DACs in calibration equipment, motor controllers. Potentiometers and data distribution.

Types of Digital to Analog Converter

R-2R Ladder DAC - This DAC is a binary converter that uses a repeating cascaded resistor values R and 2R. Using R-2R improves accuracy.

Switched Capacitor - A switched capacitor includes a parallel capacitor network.

Switched Resistor - Contains a parallel resistor system. 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.

DACS in audio-

To be able to listen to MP3 files or CDs you must have a conversion from the digital signal (MP3 files, CDs) into an analog signal for the music to be played through headphones or speakers. Once the signal has been converted it can then be passed onto an amplifier.

When playing games online or using VOIP (voice over IP) you will also need a conversion from digital to analog. You can find a range of our Audio DACs

Things to consider -

  • DACs come with all types of performance specifications, a few to consider are listed below
  • Maximum sample rate - The measurement of which the DAC circuit can operate and still provide a high accuracy reading.
  • Resolution - This would be the number of output levels that the DAC can convert. The measurement is usually bits
  • Dynamic range - The measurement of the highest and lowest decibels the DAC can re-create. the dynamic range is closely related to the resolution.

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Description Price Resolution Number of DAC Channels Digital Interface Type Mounting Type Package Type Power Supply Type Conversion Rate Typical Single Supply Voltage Voltage Reference Architecture Pin Count Maximum Settling Time Output Polarity Full Scale Error
RS Stock No. 160-1653
Mfr. Part No.AD5504BRUZ
£13.387
Each (In a Tube of 96)
Units
12 bit 4 Serial (SPI/QSPI/Microwire) Surface Mount TSSOP Single - 2.3 → 5.5 V Internal Resistor String 16 55µs - +275mV
RS Stock No. 920-0044
Mfr. Part No.LTC1595CCS8#PBF
£14.785
Each (In a Tube of 100)
Units
16 bit 1 Serial (SPI/Microwire) Surface Mount SOIC Single - 5 V Internal R-2R 8 1µs Bipolar, Unipolar ±1LSB
RS Stock No. 709-5888
Mfr. Part No.AD5420AREZ
£8.61
Each
Units
16 bit 1 Serial (SPI/QSPI/Microwire) Surface Mount TSSOP Single - 12 V, 15 V, 18 V, 24 V, 28 V External, Internal R-2R, Resistor String 24 40µs Unipolar ±0.2%FSR
RS Stock No. 726-3876
Mfr. Part No.MCP4902-E/P
BrandMicrochip
£0.69
Each (In a Pack of 5)
Units
8 bit 2 Serial (SPI) Through Hole PDIP Single - 2.7 → 5.5 V External Resistor String 14 4.5µs Unipolar -1%FSR
RS Stock No. 540-4003
Mfr. Part No.MAX517ACSA+
£4.69
Each
Units
8 bit 1 Serial (I2C) Surface Mount SOIC Single - 5 V External R-2R, Resistor String 8 6µs Unipolar ±18mV
RS Stock No. 496-9925
Mfr. Part No.AD9748ACPZ
£5.94
Each
Units
8 bit 1 Parallel Surface Mount LFCSP Single 210Msps 3.3 V External, Internal Segmented 32 0.011µs Unipolar ±0.5%FSR
RS Stock No. 620-0414
Mfr. Part No.TLC7528CDW
£3.78
Each (In a Pack of 5)
Units
8 bit 2 Parallel Surface Mount SOIC Single 10Msps 15 V, 5 V External R-2R, Resistor String 20 0.1µs - 2.5LSB
RS Stock No. 161-0566
Mfr. Part No.AD9748ACPZ
£4.217
Each (In a Tray of 490)
Units
8 bit 1 Parallel Surface Mount LFCSP Single 210Msps 3.3 V External, Internal Segmented 32 0.011µs Unipolar ±0.5%FSR
RS Stock No. 660-5178
Mfr. Part No.DAC7724UB
£21.93
Each
Units
12 bit 4 Parallel Surface Mount SOIC Dual, Single 100ksps 15 V External R-2R, Resistor String 28 10µs Bipolar, Unipolar ±2LSB
RS Stock No. 540-3993
Mfr. Part No.MAX517ACPA+
£5.68
Each
Units
8 bit 1 Serial (I2C) Through Hole PDIP Single - 5 V External R-2R, Resistor String 8 6µs Unipolar ±18mV
RS Stock No. 145-5742
Mfr. Part No.DAC7724UB
£19.933
Each (In a Tube of 20)
Units
12 bit 4 Parallel Surface Mount SOIC Dual, Single 100ksps 15 V External R-2R, Resistor String 28 10µs Bipolar, Unipolar ±2LSB
RS Stock No. 517-123
Mfr. Part No.DAC121C085CIMM/NOPB
£1.79
Each
Units
12 bit 1 Serial (I2C) Surface Mount MSOP Single - 3.3 V, 5 V External Resistor String 8 8.5µs Unipolar -0.7%FSR
RS Stock No. 912-7725
Mfr. Part No.AD5627BRMZ
£3.616
Each (In a Tube of 50)
Units
12 bit 2 Serial (I2C) Surface Mount MSOP Single 333ksps 3.3 V, 5 V External Resistor String 10 4.5µs Unipolar ±1%FSR
RS Stock No. 145-9359
Mfr. Part No.MCP4902-E/P
BrandMicrochip
£0.667
Each (In a Tube of 30)
Units
8 bit 2 Serial (SPI) Through Hole PDIP Single - 2.7 → 5.5 V External Resistor String 14 4.5µs Unipolar -1%FSR
RS Stock No. 111-2213
Mfr. Part No.AD7846JNZ
£41.193
Each (In a Tube of 13)
Units
16 bit 1 Parallel Through Hole PDIP Dual 143ksps - External Resistor String 28 9µs Bipolar, Unipolar ±16LSB
RS Stock No. 669-6294
Mfr. Part No.MCP4822-E/MS
BrandMicrochip
£2.515
Each (In a Pack of 2)
Units
12 bit 2 Serial (SPI/Microwire) Surface Mount MSOP Single - 5 V Internal Resistor String 8 4.5µs Unipolar ±2%FSR
RS Stock No. 162-4166
Mfr. Part No.DAC121C085CIMM/NOPB
£0.893
Each (On a Reel of 1000)
Units
12 bit 1 Serial (I2C) Surface Mount MSOP Single - 3.3 V, 5 V External Resistor String 8 8.5µs Unipolar -0.7%FSR
RS Stock No. 145-5716
Mfr. Part No.TLC7528CDW
£3.398
Each (In a Tube of 25)
Units
8 bit 2 Parallel Surface Mount SOIC Single 10Msps 5 V, 15 V External R-2R, Resistor String 20 0.1µs - 2.5LSB
RS Stock No. 165-9072
Mfr. Part No.MAX517ACPA+
£4.878
Each (In a Tube of 50)
Units
8 bit 1 Serial (I2C) Through Hole PDIP Single - 5 V External R-2R, Resistor String 8 6µs Unipolar ±18mV
RS Stock No. 538-4139
Mfr. Part No.AD7846JNZ
£45.31
Each
Units
16 bit 1 Parallel Through Hole PDIP Dual 143ksps - External Resistor String 28 9µs Bipolar, Unipolar ±16LSB
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