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 TV’s (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. 709-4945
Mfr. Part No.AD7849CNZ
HK$277.36
Each
units
16 bit 1 Serial (SPI) Through Hole PDIP Dual 143ksps - External R-2R, Resistor String 20 10µs Bipolar, Unipolar ±16LSB
RS Stock No. 158-2582
Mfr. Part No.AD7849CNZ
HK$279.239
Each (In a Tube of 18)
units
16 bit 1 Serial (SPI) Through Hole PDIP Dual 143ksps - External R-2R, Resistor String 20 10µs Bipolar, Unipolar ±16LSB
RS Stock No. 111-1138
Mfr. Part No.AD7541AKNZ
HK$160.646
Each (In a Tube of 20)
units
12 bit 1 Parallel Through Hole PDIP Single - 15 V External R-2R, Resistor String 18 0.6µs - ±5LSB
RS Stock No. 522-8578
Mfr. Part No.AD766JNZ
HK$256.00
Each
units
16 bit 1 Serial (SPI) Through Hole PDIP Dual 390ksps - Internal Current Steering 16 1.5µs Bipolar ±2%FSR
RS Stock No. 161-0628
Mfr. Part No.AD766JNZ
HK$237.41
Each (In a Tube of 25)
units
16 bit 1 Serial (SPI) Through Hole PDIP Dual 390ksps - Internal Current Steering 16 1.5µs Bipolar ±2%FSR
RS Stock No. 522-9896
Mfr. Part No.AD7541AKNZ
HK$150.21
Each
units
12 bit 1 Parallel Through Hole PDIP Single - 15 V External R-2R, Resistor String 18 0.6µs - ±5LSB
RS Stock No. 709-4790
Mfr. Part No.AD5662BRMZ-1
HK$60.93
Each
units
16 bit 1 Serial (SPI/QSPI/Microwire) Surface Mount MSOP Single 1.2Msps 3.3 V, 5 V External Resistor String 8 10µs Unipolar ±1.5%FSR
RS Stock No. 523-0004
Mfr. Part No.AD420ANZ-32
HK$229.85
Each
units
16 bit 1 Serial (SPI/Microwire) Through Hole PDIP Single 400sps 15 V, 18 V, 24 V External, Internal Delta Sigma 24 3000µs Unipolar -
RS Stock No. 522-8590
Mfr. Part No.AD7226KNZ
HK$387.30
Each
units
8 bit 4 Parallel Through Hole PDIP Dual, Single 143ksps 15 V External R-2R, Resistor String 20 20µs Unipolar ±1.5LSB
RS Stock No. 912-6574
Mfr. Part No.AD5662BRMZ-1
HK$43.746
Each (In a Tube of 50)
units
16 bit 1 Serial (SPI/QSPI/Microwire) Surface Mount MSOP Single 1.2Msps 3.3 V, 5 V External Resistor String 8 10µs Unipolar ±1.5%FSR
RS Stock No. 697-7445
Mfr. Part No.AD9708ARUZ
HK$59.50
Each
units
8 bit 1 Parallel Surface Mount TSSOP Single 125Msps 5 V External, Internal Segmented 28 0.035µs - ±10%FSR
RS Stock No. 111-1142
Mfr. Part No.AD420ANZ-32
HK$181.776
Each (In a Tube of 15)
units
16 bit 1 Serial (SPI/Microwire) Through Hole PDIP Single 400sps 15 V, 18 V, 24 V External, Internal Delta Sigma 24 3000µs Unipolar -
RS Stock No. 378-2143
Mfr. Part No.DAC902E
HK$118.55
Each
units
12 bit 1 Parallel Surface Mount TSSOP Single 200Msps 5 V External, Internal Segmented 28 0.03µs Unipolar ±10%FSR
RS Stock No. 145-6773
Mfr. Part No.AD9708ARUZ
HK$50.759
Each (In a Tube of 50)
units
8 bit 1 Parallel Surface Mount TSSOP Single 125Msps 5 V External, Internal Segmented 28 0.035µs - ±10%FSR
RS Stock No. 106-7067
Mfr. Part No.AD7226KNZ
HK$366.406
Each (In a Tube of 18)
units
8 bit 4 Parallel Through Hole PDIP Dual, Single 143ksps 15 V External R-2R, Resistor String 20 20µs Unipolar ±1.5LSB
RS Stock No. 160-1656
Mfr. Part No.AD5541ABRMZ
HK$119.372
Each (In a Tube of 50)
units
16 bit 2 Serial (SPI/QSPI/Microwire) Surface Mount MSOP Single - 2.7 → 5.5 V External, Internal Current Steering 10 1µs Bipolar, Unipolar ±1LSB
RS Stock No. 162-4366
Mfr. Part No.TLC7528CN
HK$23.553
Each (In a Tube of 20)
units
8 bit 2 Parallel Through Hole PDIP Single 10Msps 5 V, 15 V External R-2R, Resistor String 20 0.1µs - 2.5LSB
RS Stock No. 522-8483
Mfr. Part No.AD7243ANZ
HK$163.33
Each
units
12 bit 1 Serial (SPI) Through Hole PDIP Dual, Single 300ksps 12 V, 15 V External, Internal R-2R, Resistor String 16 10µs Bipolar, Unipolar ±6LSB
RS Stock No. 759-0834
Mfr. Part No.AD5668BRUZ-3
HK$181.32
Each
units
16 bit 8 Serial (SPI) Surface Mount TSSOP Single 95ksps 2.7 → 5.5 V Internal Resistor String 16 7µs - -1%FSR
RS Stock No. 165-8949
Mfr. Part No.MAX528CPP+
BrandMaxim
HK$180.437
Each (In a Tube of 18)
units
8 bit 8 Serial (SPI) Through Hole PDIP Dual, Single - 12 V External R-2R, Resistor String 20 3µs Unipolar ±0.5LSB
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