EVAL-AD7400EB AD [Analog Devices], EVAL-AD7400EB Datasheet - Page 8

• Manufacturer Part Number: EVAL-AD7400EB
• Description: Isolated Sigma-Delta Modulator
• Manufacturer: AD [Analog Devices]

AD7400
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 8. Pin Function Descriptions
Pin No.
1, 7
2
3
4 to 6, 10, 12, 15
8
9, 16
11
13
14
V
V
V
Mnemonic
V
NC
GND
GND
MDAT
MCLKOUT
DD1
IN
IN
DD2
+
−
1
2
Description
Supply Voltage, 4.5 V to 5.25 V. This is the supply voltage for the isolated side of the AD7400 and
is relative to GND
Positive Analog Input. Specified range of ±200 mV.
Negative Analog Input. Normally connected to GND
No Connect.
Ground 1. This is the ground reference point for all circuitry on the isolated side.
Ground 2. This is the ground reference point for all circuitry on the nonisolated side.
Serial Data Output. The single bit modulator output is supplied to this pin as a serial data stream.
The bits are clocked out on the rising edge of the MCLKOUT output and valid on the following
MCLKOUT rising edge.
Master Clock Logic Output. 10 MHz typical. The bit stream from the modulator is valid on the rising edge
of MCLKOUT.
Supply Voltage. 3 V to 5.5 V. This is the supply voltage for the nonisolated side and is relative to GND
1
.
GND
V
V
V
V
DD1
DD1
IN
IN
NC
NC
NC
+
–
1
Figure 5. Pin Configuration
1
2
3
4
5
6
7
8
NC = NO CONNECT
Rev. A | Page 8 of 20
(Not to Scale)
AD7400
TOP VIEW
16
15
14
13
12
11
10
9
GND
NC
V
MCLKOUT
NC
MDAT
NC
GND
DD2
2
2
1
.
2
.