Pin Configuration And Function Descriptions - Analog Devices EVAL AD5933-U1 Preliminary Technical Data

Preliminary Technical Data

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

Table 4. Recommended Pin Connections for System Development
Pin No. Mnemonic Description
1, 2, 3, 7 N/C No Connect.
4 RFB_PIN External Feedback Resistor. This is used to set the gain of the input signal of the VIN node. Feedback resistor
connected between TF2 and RFB. The resistor connects to the out put of internal trans impedance amplifier.
5 VIN Input Signal to Transimpedance Amplifier. External feedback resistor will control gain of transimpedance
amplifier. Test impedance is connected between this pin and the VOUT pin.
6 VOUT
Output AC Excitation Signal. Programmable frequency range 0 Hz to 50 kHz. Test impedance is connected
between this pin and the VIN pin.
8 MCLK Master Clock for the System. Used to provide output excitation signal and as sampling of ADC. External clock
pad. Used only if external clock option is selected.
9 DVDD Digital Supply Voltage. Recommended to be tied to 3.3 V.
10 AVDD1 Analog Supply Voltage 1. Recommended to be tied to 3.3 V.
11 AVDD2 Analog Supply Voltage 2. Recommended to be tied to 3.3 V.
12 DGND Digital Ground. Must be tied to GND.
13 AGND1 Analog GND 1. Must be tied to GND.
14 AGND2 Analog GND 2. Must be tied to GND.
2
15 SDA I
2
16 SCL I
It is recommended to tie all supply connections (Pins 9, 10, 11) and run from a single supply between 3.0 V and 5.5 V. Also, it is
recommended to connect all ground signals together (Pins 12, 13, 14).
RFB_PIN
VOUT
MCLK
C Data Input.
C Clock Input.
NC SCL
1 16
NC SDA
2 15
NC AGND2
3 14
AD5933
AGND1
4 13
TOP VIEW
(Not to Scale)
DGND
5 12
VIN AVDD2
6 11
NC AVDD1
7 10
DVDD
8 9
NC = NO CONNECT
Figure 2. Pin Configuration
Rev. PrA | Page 5 of 16
EVAL AD5933-U1