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. 759-1008
Mfr. Part No.AD7524LNZ
$30.01
Each
units
8 bit - Parallel Through Hole PDIP Single 4Msps 5 → 15 V External R-2R, Resistor String 16 0.25µs Bipolar, Unipolar -
RS Stock No. 912-8126
Mfr. Part No.AD5791BRUZ
$150.223
Each (In a Tube of 75)
units
20 bit 1 Serial (SPI) Surface Mount TSSOP Dual - - External, Internal R-2R, Resistor String 20 1µs Bipolar ±21LSB
RS Stock No. 825-1060
Mfr. Part No.MCP4725A2T-E/CH
BrandMicrochip
$1.52
Each (In a Pack of 10)
units
12 bit 1 Serial (I2C) Surface Mount SOT-23 Single 3.4Msps 2.7 → 5.5 V External Resistor String 6 6µs Bipolar -
RS Stock No. 165-4144
Mfr. Part No.MCP47FEB21A0-E/ST
BrandMicrochip
$1.66
Each (In a Tube of 100)
units
12 bit 1 Serial (I2C) Surface Mount TSSOP Single - 1.8 → 5.5 V External, Internal Resistor String 8 6µs Bipolar 4.5LSB
RS Stock No. 538-4886
Mfr. Part No.AD5390BSTZ-5
$66.26
Each
units
14 bit 16 Serial (I2C/SPI/QSPI/Microwire) Surface Mount LQFP Single 125ksps 5 V External, Internal Resistor String 52 10µs Unipolar ±0.06%FSR
RS Stock No. 823-7922
Mfr. Part No.MCP4728A1-E/UN
BrandMicrochip
$2.89
Each (In a Pack of 5)
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. 912-7703
Mfr. Part No.AD5410AREZ
$11.21
Each (In a Tube of 62)
units
12 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. 759-0819
Mfr. Part No.AD5663ARMZ
$12.15
Each
units
16 bit 2 Serial (SPI) Surface Mount MSOP Single 220ksps 2.7 → 5.5 V External, Internal Resistor String 10 7µs Bipolar ±1%FSR
RS Stock No. 157-8541
Mfr. Part No.AD9754ARUZ
$24.446
Each (In a Tube of 50)
units
14 bit 1 Parallel Surface Mount TSSOP Single 125Msps 5 V External, Internal - 28 0.035µs - ±5%FSR
RS Stock No. 121-8717
Mfr. Part No.DAC0800LCN/NOPB
$2.714
Each (In a Tube of 25)
units
8 bit 1 Parallel Through Hole MDIP Dual - - External Current Steering 16 0.15µs Unipolar ±1LSB
RS Stock No. 159-7711
Mfr. Part No.DAC08EQ
$7.26
Each (In a Tube of 25)
units
8 bit - Parallel Through Hole CERDIP Dual 11.8Msps - External R-2R, Resistor String 16 0.085µs Bipolar, Unipolar ±1LSB
RS Stock No. 111-1099
Mfr. Part No.DAC08CPZ
$4.69
Each (In a Tube of 25)
units
8 bit 1 Parallel Through Hole PDIP Dual 11.8Msps - External Current Steering 16 0.15µs Unipolar ±1LSB
RS Stock No. 161-0165
Mfr. Part No.DAC8043AFPZ
$16.60
Each (In a Tube of 50)
units
12 bit 1 Serial (SPI) Through Hole PDIP Single 4Msps 5 V External R-2R, Resistor String 8 1µs - ±2LSB
RS Stock No. 669-6304
Mfr. Part No.MCP4822-E/SN
BrandMicrochip
$4.74
Each (In a Pack of 2)
units
12 bit 2 Serial (SPI/Microwire) Surface Mount SOIC Single - 5 V Internal Resistor String 8 4.5µs Unipolar ±2%FSR
RS Stock No. 517-123
Mfr. Part No.DAC121C085CIMM/NOPB
$3.70
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. 146-0259
Mfr. Part No.MCP4728A1-E/UN
BrandMicrochip
$2.22
Each (In a Tube of 100)
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. 165-1906
Mfr. Part No.MCP4725A2T-E/CH
BrandMicrochip
$1.12
Each (On a Reel of 3000)
units
12 bit 1 Serial (I2C) Surface Mount SOT-23 Single 3.4Msps 2.7 → 5.5 V External Resistor String 6 6µs Bipolar -
RS Stock No. 806-5513
Mfr. Part No.AD5791BRUZ
$171.45
Each
units
20 bit 1 Serial (SPI) Surface Mount TSSOP Dual - - External, Internal R-2R, Resistor String 20 1µs Bipolar ±21LSB
RS Stock No. 669-6294
Mfr. Part No.MCP4822-E/MS
BrandMicrochip
$4.74
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. 523-7235
Mfr. Part No.AD9754ARUZ
$27.29
Each
units
14 bit 1 Parallel Surface Mount TSSOP Single 125Msps 5 V External, Internal - 28 0.035µs - ±5%FSR
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