參數(shù)資料
型號(hào)： ADA4938-2ACPZ-RL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 27/28頁(yè)
文件大?。?/td> 0K
描述： IC ADC DRIVER DUAL DIFF 24LFCSP
標(biāo)準(zhǔn)包裝： 5,000
類型： ADC 驅(qū)動(dòng)器
應(yīng)用： 數(shù)據(jù)采集
安裝類型： 表面貼裝
封裝/外殼： 24-VFQFN 裸露焊盤，CSP
供應(yīng)商設(shè)備封裝： 24-LFCSP-VQ（4x4）
包裝： 帶卷 (TR)
ADA4938-1/ADA4938-2
Rev. A | Page 8 of 28
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
06
59
2-
0
03
1
–FB
2
+IN
3
–IN
4
+FB
11 –OUT
12 PD
10 +OUT
9VOCM
5
+
V
S
6
+
V
S
7
+
V
S
8
+
V
S
1
5
–
V
S
1
6
–
V
S
1
4
–
V
S
1
3
–
V
S
ADA4938-1
TOP VIEW
(Not to Scale)
PIN 1
INDICATOR
NOTES
1. THE EXPOSED PAD IS NOT ELECTRICALLY CONNECTED
TOTHE DEVICE. IT IS TYPICALLY SOLDERED TO GROUND
OR A POWER PLANE ON THE PCB THAT IS THERMALLY
CONDUCTIVE.
Figure 5. ADA4938-1 Pin Configuration
06
59
2-
2
06
PIN 1
INDICATOR
1
2
3
4
5
6
15
16
17
18
14
13
7
8
9
1
2
1
0
2
1
2
3
2
4
+
IN
1
2
0
1
9
TOP VIEW
(Not to Scale)
ADA4938-2
–IN1
+FB1
+VS1
–FB2
+IN2
–VS2
VOCM1
+OUT1
PD2
–OUT2
–
IN
2
+
F
B
2
+
V
S
2
V
O
C
M
2
+
O
U
T
2
+
V
S
2
–
V
S
1
–
V
S
1
–
F
B
1
P
D
1
–
O
U
T
1
NOTES
1. THE EXPOSED PAD IS NOT ELECTRICALLY CONNECTED
TOTHE DEVICE. IT IS TYPICALLY SOLDERED TO GROUND
OR A POWER PLANE ON THE PCB THAT IS THERMALLY
CONDUCTIVE.
Figure 6. ADA4938-2 Pin Configuration
Table 7. ADA4938-1 Pin Function Descriptions
Pin No.
Mnemonic
Description
1
FB
Negative Output Feedback Pin.
2
+IN
Positive Input Summing Node.
3
IN
Negative Input Summing Node.
4
+FB
Positive Output Feedback Pin.
5 to 8
+VS
Positive Supply Voltage.
9
VOCM
Output Common-Mode Voltage.
10
+OUT
Positive Output for Load Connection.
11
OUT
Negative Output for Load Connection.
12
PD
Power-Down Pin.
13 to 16
VS
Negative Supply Voltage.
EP
Exposed Paddle. The exposed pad is not
electrically connected to the device. It is
typically soldered to ground or a
power plane on the PCB that is
thermally conductive.
Table 8. ADA4938-2 Pin Function Descriptions
Pin No.
Mnemonic
Description
1
IN1
Negative Input Summing Node 1.
2
+FB1
Positive Output Feedback Pin 1.
3, 4
+VS1
Positive Supply Voltage 1.
5
FB2
Negative Output Feedback Pin 2.
6
+IN2
Positive Input Summing Node 2.
7
IN2
Negative Input Summing Node 2.
8
+FB2
Positive Output Feedback Pin 2.
9, 10
+VS2
Positive Supply Voltage 2.
11
VOCM2
Output Common-Mode Voltage 2.
12
+OUT2
Positive Output 2.
13
OUT2
Negative Output 2.
14
PD2
Power-Down Pin 2.
15, 16
VS2
Negative Supply Voltage 2.
17
VOCM1
Output Common-Mode Voltage 1.
18
+OUT1
Positive Output 1.
19
OUT1
Negative Output 1.
20
PD1
Power-Down Pin 1.
21, 22
VS1
Negative Supply Voltage 1.
23
FB1
Negative Output Feedback Pin 1.
24
+IN1
Positive Input Summing Node 1.
EP
Exposed Paddle. The exposed pad is
not electrically connected to the
device. It is typically soldered to
ground or a power plane on the PCB
that is thermally conductive.
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