Datasheet

AD5933 Data Sheet
Rev. E | Page 8 of 40
PIN CONFIGURATION AND DESCRIPTIONS
NC
1
NC
2
NC
3
RFB
4
SC
L
16
SDA
15
AGND2
14
AGND1
13
VIN
5
VOUT
6
NC
7
DGND
12
AVDD2
1
1
A
VDD1
10
MCLK
8
DVDD
9
NC = NO CONNECT
AD5933
TO
P
VIEW
(Not to Scale)
05324-003
IT IS RECOMMENDED T
O TIE
ALL
SUPPL
Y
CONNECTIONS (PIN 9, PIN 10,
AND PIN
11)
AND RUN FROM
A
SINGLE SUPPL
Y BETWEEN
2.7V
AND 5.5V. IT IS ALSO RECOMMENDED
TO
CONNECT
AL
L GROUND SIGNALS
TOGETHER
(PIN 12, PIN 13,
AND PIN 14).
NOTES:
1.
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1, 2, 3, 7 NC No Connect.
4 RFB External Feedback Resistor. Connected from Pin 4 to Pin 5 and used to set the gain of the current-to-voltage
amplifier on the receive side.
5
VIN
Input to Receive Transimpedance Amplifier. Presents a virtual earth voltage of VDD/2.
6 VOUT Excitation Voltage Signal Output.
8 MCLK The master clock for the system is supplied by the user.
9 DVDD Digital Supply Voltage.
10 AVDD1 Analog Supply Voltage 1.
11 AVDD2 Analog Supply Voltage 2.
12 DGND Digital Ground.
13 AGND1 Analog Ground 1.
14 AGND2 Analog Ground 2.
15 SDA I
2
C Data Input. Open-drain pins requiring 10 kΩ pull-up resistors to VDD.
16 SCL I
2
C Clock Input. Open-drain pins requiring 10 kΩ pull-up resistors to VDD.