Analog Devices AD604 AD604 , PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

AD604
Rev. E | Page 6 of 32
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
–
DSX1 1
+
DSX1 2
PAO1 3
FBK1 4
VGN1
24
VREF23
OUT122
GND1
21
PAI1 5
COM1 6
COM2 7
VPOS20
VNEG19
VNEG
18
PAI2 8VPOS17
FBK2 9GND216
PAO2 10 OUT2
15
+
DSX2 11 VOCM14
–
DSX2 12 VGN213
AD604
TOPVIEW
(Notto Scale)
00540-002
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description
1 –DSX1 Channel 1 Negative Signal Input to DSX1.
2 +DSX1 Channel 1 Positive Signal Input to DSX1.
3 PAO1 Channel 1 Preamplifier Output.
4 FBK1 Channel 1 Preamplifier Feedback Pin.
5 PAI1 Channel 1 Preamplifier Positive Input.
6 COM1 Channel 1 Signal Ground. When this pin is connected to positive supply, Preamplifier 1 shuts down.
7 COM2 Channel 2 Signal Ground. When this pin is connected to positive supply, Preamplifier 2 shuts down.
8 PAI2 Channel 2 Preamplifier Positive Input.
9 FBK2 Channel 2 Preamplifier Feedback Pin.
10 PAO2 Channel 2 Preamplifier Output.
11 +DSX2 Channel 2 Positive Signal Input to DSX2.
12 –DSX2 Channel 2 Negative Signal Input to DSX2.
13 VGN2 Channel 2 Gain Control Input and Power-Down Pin. If this pin is grounded, the device is off; otherwise, positive
voltage increases gain.
14 VOCM Input to this pin defines the common mode of the output at OUT1 and OUT2.
15 OUT2 Channel 2 Signal Output.
16 GND2 Ground.
17 VPOS Positive Supply.
18 VNEG Negative Supply.
19 VNEG Negative Supply.
20 VPOS Positive Supply.
21 GND1 Ground.
22 OUT1 Channel 1 Signal Output.
23 VREF Input to this pin sets gain scaling for both channels to 2.5 V = 20 dB/V and 1.67 V = 30 dB/V.
24 VGN1 Channel 1 Gain Control Input and Power-Down Pin. If this pin is grounded, the device is off; otherwise, positive
voltage increases gain.