The circuit shown in Figure 1 is a 12-bit, 1 MSPS data acquisition system utilizing only two active devices. The system processes charge input signals from piezoelectric sensors using a single 3.3 V supply and has a total error of less than 0.25% FSR after calibration over a ±10°C temperature range, making it ideal for a wide variety of laboratory and industrial measurements.
The small footprint of the circuit makes this combination an industry-leading solution for data acquisition systems where accuracy, speed, cost, and size play a critical role.
The circuit design allows single supply operation. The minimum output voltage specification of the AD8608 is 50 mV for a 2.7 V power supply and 290 mV for 5 V power supply with 10 mA load current, over the temperature range of -40°C to +125°C. A minimum output voltage of 45 mV to 60 mV is a conservative estimate for a 3.3 V power supply, a load current less than 1 mA, and a narrower temperature range.
Manufacturer | Analog Devices Inc. |
---|---|
Category | Sensor Solutions |
Sub-Category | Other Sensing Solutions |
Eval Board Part Number | EVAL-CN0350-PMDZ-ND |
Eval Board Supplier | Analog Devices Inc. |
Eval Board |
Normally In Stock
|
Purpose |
Piezoelectric
Signal Conditioning |
Range |
Up to 7.5 MHz
|
Sensing Method |
Electrochemical Sensor
|
Voltage In |
3.3 V
|
Features |
Over Voltage Protection
Shutdown, Enable, Standby SPI Interface Voltage Reference |
Design Author |
Analog Devices
|
Component Count + Extras |
24 + 6
|
Main I.C. Base Part |
AD7091R
AD8608 |
Date Created By Author | 2014-05 |
Date Added To Library | 2018-03 |