参数资料
型号: PGA309EVM
厂商: Texas Instruments, Inc.
英文描述: PGA309 Evaluation Module(PGA309评估模块)
中文描述: PGA309评估模块(PGA309评估模块)
文件页数: 22/53页
文件大小: 4221K
代理商: PGA309EVM
Table 3 details the PGA309 settings defined by this file (PGA309_DK_Test.txt).
Parameter
Desired Setting
V
DIFF
0V to 33.67mV
V
REF
4.096V
V
EXC
3.4V
Page 22 of 53
Comments
Adjust R
TEST
from 0
to 20
Use Internal PGA309 Reference
Use Linearization Circuit, Range 0
(K
EXC
=0.83), LinDAC=0
With Over-Scale and Under-Scale disabled
With Over-Scale and Under-Scale enabled
Enable
Positive
Disable
Continuous Conversion Mode
Set so all temperatures < +128°C will use
same Gain DAC and Zero DAC settings
Coarse Offset
Front End PGA Gain
Gain DAC
Output Amplifier Gain
Zero DAC
Over-Scale
Under-Scale
V
OUT
Ideal
V
OUT
Final (Ideal)
Fault Detection
Temperature ADC
Output Enable Counter
EEPROM Temperature
Coefficients
Table 3: PGA309EVM Sensor Interface Board Functional Test Settings
Equations for Table 3:
V
OUT
= V
DIFF
(Front End PGA Gain)(Gain DAC)(Output Amplifier Gain) +
Coarse Offset (Front End PGA Gain)(Gain DAC)(Output Amplifier Gain) +
Zero DAC (Gain DAC)(Output Amplifier Gain)
V
OUT
= V
DIFF
(64)(1)(2.4) +
-3.277mV (64)(1)(2.4) +
100mV (1)(2.4)
V
OUT
= V
DIFF
(153.6) – 0.2633V
-3.277mV
64
1
2.4
100mV
3.976V
0.245V
-0.263V to +4.908V
0.245V to 3.976V
External Comparators
Fault Detect Polarity
Internal Comparators
Internal Mode
Set to all zeroes
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