AD5934
Rev. A | Page 8 of 40
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NC
1
NC
2
NC
3
RFB
4
SCL
16
SDA
15
AGND2
14
AGND1
13
VIN
5
VOUT
6
NC
7
DGND
12
AVDD2
11
AVDD1
10
MCLK
NOTES:
1. IT IS RECOMMENDED TO TIE ALL SUPPLY
CONNECTIONS (PIN 9, PIN 10, AND PIN 11)
AND RUN FROM A SINGLE SUPPLY BETWEEN
2.7V AND 5.5V.
2. IT IS ALSO RECOMMENDED TO
CONNECT ALL GROUND SIGNALS TOGETHER
(PIN 12, PIN 13, AND PIN 14).
8
DVDD
9
NC = NO CONNECT
AD5934
TOP VIEW
(Not to Scale)
0
532
5-
0
03
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Description
1 to 3, 7
NC
No Connect.
4 RFB External Feedback Resistor. Connect from Pin 4 to Pin 5. This pin sets the gain of the current-to-voltage amplifier
on the receive side.
5
VIN
Input to Receive Transimpedance Amplifier. VIN 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.
16 SCL I
2
C Clock Input.
Summary of Contents for AD5934
Page 35: ...AD5934 Rev A Page 35 of 40 SCHEMATICS 05325 144 Figure 40 EVAL AD5934EBZ USB Schematic ...
Page 36: ...AD5934 Rev A Page 36 of 40 05325 145 Figure 41 EVAL AD5934EBZ Schematic ...
Page 37: ...AD5934 Rev A Page 37 of 40 05325 146 Figure 42 Linear Regulator on EVAL AD5934EBZ ...
Page 38: ...AD5934 Rev A Page 38 of 40 05325 147 Figure 43 Decoupling on the EVAL AD5934EBZ ...
