How to configure the EVAL-ADAQ4003-PMDZ for single ended input signal?

Follow these jumper settings to configure for single-ended inputs: JP6 = connect A to COM JP7 = connect B to COM (this grounds the IN- pin) JP8 = connect B to COM Connect the input signal through the SMA connector J2.

How much current is needed to power-up the EVAL-ADAQ4003-PMDZ board? The user is not using the EVAL-SDP-CH1Z to control /communicate with the board.

To power-up the EVAL-ADAQ4003-PMDZ board, a 3.3V and at least 400mA power supply should be connected to the VIN pins of the PMOD connector P1. The reason for the large current is the presence of a boost and inverting buck-boost regulators which converts the 3.3V VIN to the +/-15V voltage rails needed by the ADAQ4003.

Where are the ADCIN+ and ADCIN- pins connected inside the ADAQ4003?

The ADCIN+ is connected to the positive(+) input of the ADC block meanwhile the ADCIN- is connected to the negative(-) input of the ADC block. These pins are not connected to the IN+ or IN- pins.

How to power up or power down the reference buffer and ADC driver inside the ADAQ4003.

Use PD_REF and PD_AMP pins to control the operation of the reference buffer and ADC driver. To simplify the connection and reduce the number of voltage rails needed, tie the PD_REF and PD_AMP pins to the same potential as VS+ to enable or tie the PD_REF and PD_AMP pins to the same potential as the GND pin on the ADAQ4003.

ADAQ4003: FAQ - Documents - Precision ADCs

ADAQ4003: FAQ

This is a compilation of the frequently asked questions for the ADAQ4003.