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ADA4254ACPZ-R7 数据表(PDF) 10 Page - Analog Devices

部件名 ADA4254ACPZ-R7
功能描述  Zero Drift, High Voltage, Low Power, Programmable Gain Instrumentation Amplifier
PDF  59 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADA4254ACPZ-R7 数据表(HTML) 10 Page - Analog Devices

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ADA4254
Data Sheet
Rev. B | Page 10 of 59
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
1
+IN1
2
–IN1
3
+IN2
4
–IN2
5
DNC
6
DVSS
7
DVDD
17 GPIO1
18 GPIO0
19 +OUT
20 –OUT
21 VOCM
NOTES
1. DNC = DO NOT CONNECT. DO NOT CONNECT
TO THIS PIN.
2. CONNECT THE EXPOSED PAD (EPAD)
TO VSSH.
16 GPIO2
15 GPIO3
ADA4254
TOP VIEW
EPAD
Figure 5. 28-Lead LFCSP Pin Configuration
1
2
3
4
5
6
7
8
9
10
20
21
22
23
24
19
18
17
16
15
14
13
12
11
VOCM
AVSS
AVDD
VDDH
IOUT_HV
IOUT_LV
–OUT
GPIO0
GPIO1
GPIO2
CS
GPIO4
GPIO3
VSSH
+IN1
–IN2
+IN2
–IN1
SCLK
SDI
DVSS
DVDD
SDO
+OUT
ADA4254
TOP VIEW
Figure 6. 24-Lead TSSOP Pin Configuration
Table 5. Pin Function Descriptions
Mnemonic
LFCSP Pin No.
TSSOP Pin No.
Description
+IN1
1
9
Channel 1 Positive Input.
−IN1
2
10
Channel 1 Negative Input.
+IN2
3
11
Channel 2 Positive Input.
−IN2
4
12
Channel 2 Negative Input.
DNC
5, 28
Not applicable
Do Not Connect. Do not connect to this pin.
DVSS
6
13
Negative Digital Supply Voltage.
DVDD
7
14
Positive Digital Supply Voltage.
SDO
8
15
SPI Serial Data Output.
SDI
9
16
SPI Serial Data Input.
SCLK
10
17
SPI Serial Clock Input.
CS
11
18
SPI Chip Select Input.
GPIO6
12
Not applicable
GPIO6/SCS6.
GPIO5
13
Not applicable
GPIO5/SCS5.
GPIO4
14
19
GPIO4/SCS4/Clock Input or Output.
GPIO3
15
20
GPIO3/SCS3/Fault Interrupt Output.
GPIO2
16
21
GPIO2/SCS2/Calibration Busy Out.
GPIO1
17
22
GPIO1/SCS1/External Multiplexer Control 1.
GPIO0
18
23
GPIO0/SCS0/External Multiplexer Control 0.
+OUT
19
24
Positive Output.
−OUT
20
1
Negative Output.
VOCM
21
2
Output Amplifier Common-Mode Voltage Input. This pin is high impedance
and is not internally biased.
AVSS
22
3
Output Amplifier Negative Supply Voltage.
AVDD
23
4
Output Amplifier Positive Supply Voltage.
IOUT_LV
24
5
Low Voltage Excitation Current Source Output.
IOUT_HV
25
6
High Voltage Excitation Current Source Output.
VDDH
26
7
Positive High Voltage Supply.
VSSH
27
8
Negative High Voltage Supply.
EPAD
Not applicable
Exposed Pad. Connect the exposed pad (EPAD) to VSSH.



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