Data Acquisition Systems

A Data Acquisition System, commonly abbreviated to DAS or DAQ, is a device that measures analogue electrical signals and converts them into digital form. The translation of analogue signals into digital provides data in a binary format that can be stored, read and processed by a computing system.

For example, a Data Acquisition System is commonly used to process the signals produced by sensors. A sensor monitors a physical phenomenon, producing an analogue output proportional to the variable being measured. A Data Acquisition System can be used to convert the signal into digital, allowing it to be used by the host system.

To provide complete analogue-to-digital conversion functionality a Data Acquisition System IC integrates all the required circuity into one device, marrying an analogue front-end (AFE) signal conditioning circuit to an analogue-to-digital converter in one package.

Signal conditioning circuity prepares the analogue input for processing, as often raw input signals are not suitable for processing by the analogue-to-digital converter. Filtering, amplification, isolation and attenuation are some examples of the conditioning circuity that may be integrated into the device.

Why use a Digital Acquisition System IC for Signal Conversion?

• A DAS IC provides a complete signal conversion solution, it minimises the external circuity required. Component count is less compared to utilising standalone analogue to digital converters with separate signal conditioning circuits
• Product development is simpler as all of the needed conversion functionality is already designed and provided by the device.
• Can be more space efficient and take up less PCB space

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Description Price Number of ADCs Number of DACs Data Rate Resolution Signal to Noise Ratio Maximum Settling Time Mounting Type Package Type Pin Count Integral Nonlinearity Error Full Scale Error Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage
RS Stock No. 875-4812
Mfr. Part No.AD5592RBRUZ
TWD259
Each
units
1 8 400ksps 12 bit 81dB 6µs Surface Mount TSSOP 16 ±1 (DAC) LSB, ±2 (ADC) LSB 0.3%FSR Single 2.7 → 5.5 V -
RS Stock No. 160-2729
Mfr. Part No.AD5592RBRUZ
TWD206
Each (In a Tube of 96)
units
1 8 400ksps 12 bit 81dB 6µs Surface Mount TSSOP 16 ±1 (DAC) LSB, ±2 (ADC) LSB 0.3%FSR Single 2.7 → 5.5 V -
RS Stock No. 130-1031
Mfr. Part No.AD7605-4BSTZ
TWD775
Each
units
1 - 300ksps 16 bit 90dB 80µs Surface Mount LQFP 64 ±2LSB ±32LSB Single 2.5 → 5 V -
RS Stock No. 806-7799
Mfr. Part No.AD7606BSTZ-4
TWD716
Each
units
1 - 200ksps 16 bit 95.5dB 80µs Surface Mount LQFP 64 ±2LSB ±32LSB Single 5 V -
RS Stock No. 912-8148
Mfr. Part No.AD7606BSTZ-4
TWD573
Each (In a Tray of 160)
units
1 - 200ksps 16 bit 95.5dB 80µs Surface Mount LQFP 64 ±2LSB ±32LSB Single 5 V -
New
RS Stock No. 172-7832
Mfr. Part No.AD7605-4BSTZ
TWD847
Each (In a Tray of 160)
units
1 - 300ksps 16 bit 90dB 80µs Surface Mount LQFP 64 ±2LSB ±32LSB Single 2.5 → 5 V -
RS Stock No. 681-1118
Mfr. Part No.MCP2122-E/SN
BrandMicrochip
TWD23
Each (In a Pack of 5)
units
- - - - - - Surface Mount SOIC 8 - - Single - -
RS Stock No. 160-2768
Mfr. Part No.AD7569BNZ
TWD1,049
Each (In a Tube of 15)
units
1 1 200kHz 8 bit 46dB 4µs Through Hole PDIP 24 - ±2LSB Dual, Single - ±5.25V
RS Stock No. 796-8701
Mfr. Part No.ADAS3022BCPZ
TWD1,008
Each
units
1 1 1Msps 16 bit 91.5dB 100ms Surface Mount LFCSP 40 +1.5LSB ±15LSB Dual, Single 4.75 → 5.25 V ±1.28 → ±10.24V
RS Stock No. 155-6751
Mfr. Part No.LTC1290DCSW#PBF
TWD628
Each (In a Tube of 38)
units
1 1 - 12 bit 74dB 13µs Surface Mount SOIC 20 ±0.75LSB 1LSB Dual, Single 5 V ±5V
RS Stock No. 786-9799
Mfr. Part No.LTC1290DCSW#PBF
TWD640
Each
units
1 1 - 12 bit 74dB 13µs Surface Mount SOIC 20 ±0.75LSB 1LSB Dual, Single 5 V ±5V
New
RS Stock No. 172-7833
Mfr. Part No.AD7616BSTZ
TWD989
Each (In a Tray of 90)
units
2 - 1Msps 16 (ADC) bit 90.5 dB @ ±10 V 120µs Surface Mount LQFP 80 ±2LSB ±32 LSB @ ±10 V Dual, Single 5 V ±10 V, ±2.5 V, ±5 V
RS Stock No. 159-6632
Mfr. Part No.MCP2122-E/SN
BrandMicrochip
TWD20
Each (In a Tube of 100)
units
- - - - - - Surface Mount SOIC 8 - - Single - -
RS Stock No. 806-7802
Mfr. Part No.AD7609BSTZ
TWD1,350
Each
units
18 - 200ksps 18 bit 101dB 80µs Surface Mount LQFP 64 ±7.5LSB ±140LSB Single 5 V -
New
RS Stock No. 171-4091
Mfr. Part No.BU92001KN-E2
BrandROHM
TWD68
Each (On a Reel of 2500)
units
- - 115.2ksps - - - Surface Mount VQFN 20 - - Single 3 V -
RS Stock No. 144-6431
Mfr. Part No.ADAQ7988BCCZ
TWD637
Each (In a Tray of 442)
units
1 - - 16 bit - - Surface Mount LGA 24 ±20ppm - Dual, Single - -
RS Stock No. 538-4145
Mfr. Part No.AD7569JNZ
TWD755
Each
units
1 1 200kHz 8 bit 44dB 4µs Through Hole PDIP 24 ±1LSB ±3LSB Dual, Single 5 V ±5V
RS Stock No. 158-0133
Mfr. Part No.AD7569JNZ
TWD869
Each (In a Tube of 15)
units
1 1 200kHz 8 bit 44dB 4µs Through Hole PDIP 24 ±1LSB ±3LSB Dual, Single 5 V ±5V
RS Stock No. 160-2730
Mfr. Part No.AD5593RBRUZ
TWD206
Each (In a Tube of 96)
units
1 8 10kHz 12 bit 81dB 6µs Surface Mount TSSOP 16 ±1 (DAC) LSB, ±2 (ADC) LSB 0.3%FSR Single 2.7 → 5.5 V -
RS Stock No. 155-9347
Mfr. Part No.LTC1091CN8#PBF
TWD493
Each (In a Tube of 50)
units
1 - - 10 bit - - Through Hole PDIP 8 - ±2LSB Single 4.5 → 10 V -