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. 111-2213
Mfr. Part No.AD7846JNZ
SGD86.017
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. 669-6290
Mfr. Part No.MCP4725A0T-E/CH
BrandMicrochip
SGD1.45
Each (In a Pack of 5)
units
12 bit 1 Serial (I2C) Surface Mount SOT-23A Single - 3.3 V, 5 V External Resistor String 6 6µs Unipolar ±2%FSR
RS Stock No. 887-7316
Mfr. Part No.MCP4725A0T-E/CH
BrandMicrochip
SGD1.10
Each (On a Reel of 3000)
units
12 bit 1 Serial (I2C) Surface Mount SOT-23A Single - 3.3 V, 5 V External Resistor String 6 6µs Unipolar ±2%FSR
RS Stock No. 738-6027
Mfr. Part No.MCP4921-E/P
BrandMicrochip
SGD2.86
Each (In a Pack of 2)
units
12 bit 1 Serial (SPI/Microwire) Through Hole PDIP Single - 5 V External Resistor String 8 4.5µs Unipolar 1%FSR
RS Stock No. 162-4365
Mfr. Part No.TLC5628CN
SGD9.682
Each (In a Tube of 25)
units
8 bit 8 Serial (SPI) Through Hole PDIP Single 45ksps 5 V External Resistor String 16 10µs Unipolar ±60mV
RS Stock No. 820-9334
Mfr. Part No.AD5641BKSZ-500RL7
SGD7.79
Each (In a Pack of 2)
units
14 bit 1 Serial (SPI/QSPI) Surface Mount SC-70 Single - 2.7 → 5.5 V External Resistor String 6 10µs Bipolar ±0.5mV
RS Stock No. 159-7839
Mfr. Part No.AD7837BRZ
SGD54.58
Each (In a Tube of 31)
units
12 bit 2 Parallel Surface Mount SOIC W Dual 250ksps - External R-2R, Resistor String 24 5µs Unipolar ±3LSB
RS Stock No. 200-6640
Mfr. Part No.TLC5628CN
SGD8.51
Each
units
8 bit 8 Serial (SPI) Through Hole PDIP Single 45ksps 5 V External Resistor String 16 10µs Unipolar ±60mV
RS Stock No. 758-9689
Mfr. Part No.AD5668BRUZ-2
SGD36.59
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. 159-8074
Mfr. Part No.AD5668BRUZ-2
SGD30.26
Each (In a Tube of 96)
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. 522-9240
Mfr. Part No.AD7542JNZ
SGD59.48
Each
units
12 bit 1 Parallel Through Hole PDIP Single - 5 V External R-2R, Resistor String 16 2µs - ±4LSB
RS Stock No. 770-9798
Mfr. Part No.MCP4821-E/P
BrandMicrochip
SGD3.345
Each (In a Pack of 2)
units
12 bit 1 Serial (SPI) Through Hole PDIP Single - 2.7 → 5.5 V Internal Resistor String 8 4.5µs Bipolar 12LSB
RS Stock No. 145-0836
Mfr. Part No.TLC5620CD
SGD8.91
Each (In a Tube of 50)
units
8 bit 4 Serial (SPI) Surface Mount SOIC Single 48ksps 5 V External Resistor String 14 10µs Unipolar ±60mV
RS Stock No. 817-3585
Mfr. Part No.MCP4728T-E/UN
BrandMicrochip
SGD2.09
Each (On a Reel of 2500)
units
12 bit 4 Serial (I2C) Surface Mount MSOP Single - 2.7 → 5.5 V External, Internal Resistor String 10 6µs Unipolar -
RS Stock No. 161-0640
Mfr. Part No.AD7542JNZ
SGD53.20
Each (In a Tube of 25)
units
12 bit 1 Parallel Through Hole PDIP Single - 5 V External R-2R, Resistor String 16 2µs - ±4LSB
RS Stock No. 651-2105
Mfr. Part No.DAC084S085CIMM/NOPB
SGD3.652
Each (In a Pack of 5)
units
8 bit 4 Serial (SPI/QSPI/Microwire) Surface Mount MSOP Single - 3.3 V, 5 V External Resistor String 10 4.5µs Unipolar -0.75%FSR
RS Stock No. 160-7973
Mfr. Part No.AD5641BKSZ-500RL7
SGD4.769
Each (On a Reel of 500)
units
14 bit 1 Serial (SPI/QSPI) Surface Mount SC-70 Single - 2.7 → 5.5 V External Resistor String 6 10µs Bipolar ±0.5mV
RS Stock No. 823-7926
Mfr. Part No.MCP4811-E/SN
BrandMicrochip
SGD2.44
Each (In a Pack of 5)
units
10 bit 1 Serial (SPI) Surface Mount SOIC Single - 2.7 → 5.5 V Internal Resistor String 8 4.5µs Bipolar -
RS Stock No. 146-0260
Mfr. Part No.MCP4811-E/SN
BrandMicrochip
SGD1.88
Each (In a Tube of 100)
units
10 bit 1 Serial (SPI) Surface Mount SOIC Single - 2.7 → 5.5 V Internal Resistor String 8 4.5µs Bipolar -
RS Stock No. 158-0545
Mfr. Part No.AD9767ASTZ
SGD36.216
Each (In a Tray of 250)
units
14 bit 2 Parallel Surface Mount LQFP Single 125Msps 5 V External, Internal Segmented 48 0.035µs Unipolar ±5%FSR