參數(shù)資料
型號： XTR108
英文描述： 4-20mA, TWO-WIRE TRANSMITTER Smart Programmable with Signal Conditioning
中文描述： 的4 - 20mA，兩線制變送器可編程智能與信號調理
文件頁數(shù)： 21/27頁
文件大?。?/td> 497K
代理商： XTR108
XTR108
SBOS187B
21
www.ti.com
CALIBRATED ERROR
(ppm of Full Scale)
ERROR SOURCE
ERROR EQUATION
SAMPLE ERROR CALCULATION
INPUT
Input Offset Voltage
vs Common Mode
Input Bias Current
Input Offset Current
Note (1)
0
CMRR
CM/(V
IN MAX
)
10
6
Note (1)
Note (1)
5
μ
V/V
0.1V/0.04V
10
6
12.5
0
0
12.5
Total Input Error:
EXCITATION
Current Reference Accuracy
vs Common Mode
Current Reference Matching
DAC Resolution and Linearity
Note (1)
0
CM/R
OUT
R
/(V
IN MAX
)
10
6
Note (1)
1LSB
FINE
R
RTD MIN
/(V
IN MAX
)
10
6
0.1V/100M
100
/40mV
2.5
96nA
100
/40mV
10
6
Total Excitation Error:
240
242.5
GAIN
Span
Nonlinearity
Note (1)
0
Nonlinearity (%)/100%
10
6
0.01%/100%
10
6
100
100
Total Gain Error:
OUTPUT
Zero Output
vs Supply
DAC Resolution and Linearity
Note (1)
0
6
(I
ZERO
vs V
+
)
V
/16mA
10
6
2LSB
FINE
/16mA
10
6
Note (2)
2
1.8
μ
A/16mA
10
6
Total Output Error:
225
231
DRIFT (
T
= 20
°
C)
Input Offset Voltage
Current Reference Accuracy
Current Reference Matching
Span
Zero Output
Drift
T
/(V
IN MAX
)
10
6
Drift
A
Drift
T
A
I
R
RTD MIN
/(V
IN MAX
)
Drift
A
Drift
T
A
0.02
μ
V/
°
C
20
°
C/40mV
106
35ppm
20
°
C
15ppm
20
°
C
518.9
μ
A
100/40mV
30ppm
20
°
C
Note (1)
10
700
390
600
250
1950
Total Drift Error:
NOISE (0.1Hz to 10Hz, Typ)
Input Offset Voltage
Current Reference
Zero Output
V
N
/(V
IN MAX
)
10
6
6
μ
V/40mV
10
6
0.015
μ
A
100
/40mV
10
6
1.1
μ
A/16mA
10
6
Total Noise Error:
150
37.5
68.5
256
I
REF
Noise
R
/(V
IN MAX
)
10
6
I
ZERO
Noise/16mA
6
TOTAL ERROR:
2792 (1997)
(3)
0.28% (0.20%)
(3)
SAMPLE ERROR CALCULATION
RTD value at 4mA Output (R
) 100
: RTD Measurement Range 200
°
C; Ambient Temperature Range (
T
A
) 20
°
C; Supply Voltage Change (
V
+
) 5V; Common-
Mode Voltage Change (
CM) 0.1V.
Chosen XTR108 parameters: PGIA gain = 50; I
REF
= 518.9
μ
A; Full-scale V
IN
= 40mW. Register 06 = 0
H
03; Register 11 = 0
H
11; Register 13 = 0
H
FC; Register 14 = 0
H
70.
NOTES: (1) Does not contribute to the output error due to calibration. (2) All errors are referred to input unless otherwise stated. (3) Calculated as root-
sum
–
square.
TABLE XVII. Sample Error Budget Calculation.
SAMPLE ERROR ANALYSIS
Table XVII shows a detailed computation of the error
accumulation. The sample error budget is based on a typical
RTD circuit (Pt100, 200
°
C measurement span). Note that
these calculations are based on typical characteristics where
no maximum or minimum characteristic is available. The
assumption is made that all errors are positive and additive.
As the various error sources are independent, a closer
approximation to nominal performance might be to accumu-
late the errors with a root-sum-square calculation.
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相關代理商/技術參數(shù)
參數(shù)描述
XTR108_12 制造商:BB 制造商全稱:BB 功能描述:4-20mA, TWO-WIRE TRANSMITTER a??Smarta?? Programmable with Signal Conditioning
XTR108-DIE 制造商:TI 制造商全稱:Texas Instruments 功能描述:TWO-WIRE TRANSMITTER
XTR108EA 功能描述:接口 - 專用 4-20mA 2Wire Trsmtr ’Smart’ Prog RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59
XTR108EA/2K5 功能描述:接口 - 專用 4-20mA 2Wire Trsmtr ’Smart’ Prog RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59
XTR108EA/2K5G4 功能描述:接口 - 專用 4-20mA 2Wire Trsmtr ’Smart’ Prog RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59
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