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參數資料
| 型號： | PGA309AIPWR |
| 英文描述： | Voltage Output PROGRAMMABLE SENSOR CONDITIONER |
| 中文描述： | 電壓輸出可編程傳感器空調 |
| 文件頁數： | 5/20頁 |
| 文件大小： | 298K |
| 代理商： | PGA309AIPWR |
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SBOS292A DECEMBER 2003 REVISED AUGUST 2004
www.ti.com
5
ELECTRICAL CHARACTERISTICS (continued)
BOLDFACE
limits apply over the specified temperature range:
T
A
= 40
°
C to +125
°
C
TA = +25
°
C, VSA = VSD = +5V (VSA = VSUPPLY ANALOG, VSD = VSUPPLY DIGITAL; VSA must equal VSD), GNDD = GNDA = 0, and VREF = REFIN/REFOUT = +5V,
unless otherwise noted.
PGA309
PARAMETER
UNITS
MAX
TYP
MIN
CONDITIONS
INTERNAL VOLTAGE REFERENCE
VREF1
VREF1 Drift vs Temperature
VREF2
VREF2 Drift vs Temperature
Input Current REFIN/REFOUT
Output Current REFIN/REFOUT
Register 3, Bit D9 = 1
2.46
2.5
+10
4.096
+10
100
1
1
2.53
V
ppm/
°
C
V
ppm/
°
C
μ
A
mA
mA
Register 3, Bit D9 = 0
4.0
4.14
Internal VREF Disabled
VSA > 2.7V for VREF = 2.5V
VSA > 4.3V for VREF = 4.096V
TEMPERATURE SENSE CIRCUITRY (ADC)
Internal Temperature Measurement
Accuracy
Resolution
Temperature Measurement Range
Conversion Rate
Register 6, Bit D9 = 1
±
2
°
C
°
C
°
C
ms
12-Bit + Sign, Two’s Complement Data Format
±
0.0625
55
+150
R1, R0 = ‘11’, 12-Bit + Sign Resolution
24
TEMPERATURE ADC
External Temperature Mode
Gain Range Steps
Analog Input Voltage Range
Temperature ADC Internal REF (2.048V)
Full-Scale Input Voltage
Differential Input Impedance
Common-Mode Input Impedance
Temp PGA + Temp ADC
GPGA = 1, 2, 4, 8
1 to 8
V/V
V
GND0.2
VSA+0.2
Register 6, Bit D8 = 1
(+Input) (Input)
±
2.048/GPGA
2.8/GPGA
3.5
3.5
1.8
0.9
11
13
14
15
0.004
1.2
0.7
0.5
0.4
1.2
0.6
0.3
0.3
800
400
200
150
0.05
5
< 1
80
105
100
V
M
M
M
M
M
G
PGA
= 1
G
PGA
= 2
G
PGA
= 4
G
PGA
= 8
Resolution
R1, R0 = ‘00’, ADC2X = ‘0’, Conversion Time = 8ms
R1, R0 = ‘01’, ADC2X = ‘0’, Conversion Time = 32ms
R1, R0 = ‘10’, ADC2X = ‘0’, Conversion Time = 64ms
R1, R0 = ‘11’, ADC2X = ‘0’, Conversion Time = 128ms
Bits + Sign
Bits + Sign
Bits + Sign
Bits + Sign
%
mV
mV
mV
mV
μ
V/
°
C
μ
V/
°
C
μ
V/
°
C
μ
V/
°
C
μ
V/V
μ
V/V
μ
V/V
μ
V/V
%
ppm/
°
C
LSB
ppm/V
dB
dB
Integral Nonlinearity
Offset Error
G
PGA
= 1
G
PGA
= 2
G
PGA
= 4
G
PGA
= 8
G
PGA
= 1
G
PGA
= 2
G
PGA
= 4
G
PGA
= 8
G
PGA
= 1
G
PGA
= 2
G
PGA
= 4
G
PGA
= 8
Offset Drift
Offset vs VSA
Gain Error
Gain Error Drift
Noise
Gain vs VSA
Common-Mode Rejection
0.50
50
All Gains
At DC and
G
PGA
= 8
At DC and
G
PGA
= 1
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