參數(shù)資料
型號： XTR112
英文描述： 4-20mA CURRENT TRANSMITTERS with Sensor Excitation and Linearization
中文描述： 的4 - 20mA的傳感器激勵和線性電流遞質(zhì)
文件頁數(shù)： 13/16頁
文件大?。?/td> 255K
代理商： XTR112
13
XTR112, XTR114
TABLE IV. Error Calculation.
SAMPLE ERROR CALCULATION FOR XTR112
(1)
RTD value at 4mA Output (R
RTD MIN
)
RTD Measurement Range
Ambient Temperature Range (
T
A
)
Supply Voltage Change (
V+)
Common-Mode Voltage Change (
CM)
1000
200
°
C
20
°
C
5V
0.1V
SAMPLE
ERROR SOURCE
ERROR EQUATION
ERROR CALCULATION
(2)
UNADJ.
ADJUST.
INPUT
Input Offset Voltage
vs Common-Mode
Input Bias Current
Input Offset Current
V
OS
/(V
) 10
6
CMRR
CM/(V
IN 6
) 10
6
I
B
/I
REF
10
I
OS
R
RTD MIN
/(V
IN MAX
) 10
6
100
μ
V/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
50
μ
V/V 0.1V/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
0.025
μ
A/250
μ
A 10
6
3nA 1000
/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
526
26
100
16
668
0
26
0
0
26
Total Input Error:
EXCITATION
Current Reference Accuracy
vs Supply
Current Reference Matching
I
REF
Accuracy (%)/100% 10
6
(I
vs V+)
V+
I
REF
Matching (%)/100% I
REF
R
/(V
) 10
6
(I
REF
matching vs V+)
V+
R
RTD MIN
/(V
IN MAX
)
0.2%/100% 10
6
25ppm/V 5V
2000
125
1316
0
125
0
0.1%/100% 250
μ
A 1000
/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
vs Supply
10ppm/V 5V 250
μ
A 1000
/(250
μ
A 3.8
/
°
C 200
°
C)
66
66
Total Excitation Error:
3507
191
GAIN
Span
Nonlinearity
Span Error (%)/100% 10
6
Nonlinearity (%)/100% 10
6
0.2%/100% 10
6
0.01%/100% 10
6
2000
100
2100
0
100
100
Total Gain Error:
OUTPUT
Zero Output
vs Supply
I
ZERO
- 4mA) 16000
μ
A 10
6
(I
ZERO
V+/16000
μ
A 10
6
25
μ
A/16000
μ
A 10
6
0.2
μ
A/V 5V/16000
μ
A 10
6
1563
63
1626
0
63
63
Total Output Error:
DRIFT (
T
= 20
°
C)
Input Offset Voltage
Input Bias Current (typical)
Input Offset Current (typical)
Current Reference Accuracy
Current Reference Matching
Span
Zero Output
Drift
T
A
/(V
IN MAX
) 10
6
Drift
T
A
/I
REF
10
6
Drift
T
A
R
/(V
IN MAX
) 10
6
Drift
T
A
Drift
T
A
I
R
RTD MIN
/(V
IN MAX
)
Drift
A
Drift
T
A
/16000
μ
A 10
6
1.5
μ
V/
°
C 20
°
C/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
20pA/
°
C 20
°
C/250
μ
A 10
6
5pA/
°
C 20
°
C 1000
/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
35ppm/
°
C 20
°
C
15ppm/
°
C 20
°
C 250
μ
A 1000
/(250
μ
A 3.8
/
°
C 200
°
C)
25ppm/
°
C 20
°
C
0.5
μ
A/
°
C 20
°
C/16000
μ
A 10
6
158
2
0.5
700
395
500
626
2382
158
2
0.5
700
395
500
626
2382
Total Drift Error:
NOISE (0.1Hz to 10Hz, typ)
Input Offset Voltage
Current Reference
Zero Output
v
n
/(V
IN MAX
) 10
6
0.6
μ
V/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
3nA 1000
/(250
μ
A 3.8
/
°
C 200
°
C) 10
6
0.03
μ
A/16000
μ
A 10
6
3
3
I
REF
Noise R
RTD MIN
/(V
IN MAX
) 10
6
I
ZERO
Noise/16000
μ
A 10
6
16
2
21
16
2
21
Total Noise Error:
TOTAL ERROR:
10304
(1.03%)
2783
(0.28%)
NOTES: (1) For XTR114, I
REF
= 100
μ
A. Total unadjusted error is 1.16%, adjusted error 0.31%. (2) All errors are min/max and referred to input, unless
otherwise stated.
ERROR
(ppm of Full Scale)
REVERSE-VOLTAGE PROTECTION
The XTR112’s and XTR114’s low compliance rating (7.5V)
permits the use of various voltage protection methods with-
out compromising operating range. Figure 4 shows a diode
bridge circuit which allows normal operation even when the
voltage connection lines are reversed. The bridge causes a
two diode drop (approximately 1.4V) loss in loop supply
voltage. This results in a compliance voltage of approxi-
mately 9V—satisfactory for most applications. If 1.4V drop
in loop supply is too much, a diode can be inserted in series
with the loop supply voltage and the V+ pin. This protects
against reverse output connection lines with only a 0.7V loss
in loop supply voltage.
SURGE PROTECTION
Remote connections to current transmitters can sometimes be
subjected to voltage surges. It is prudent to limit the maximum
surge voltage applied to the XTR to as low as practical.
Various zener diode and surge clamping diodes are specially
designed for this purpose. Select a clamp diode with as low a
voltage rating as possible for best protection. For example, a
36V protection diode will assure proper transmitter operation
at normal loop voltages, yet will provide an appropriate level
of protection against voltage surges. Characterization tests on
three production lots showed no damage to the XTR112 or
XTR114 within loop supply voltages up to 65V.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XTR112/XTR114 制造商:BB 制造商全稱:BB 功能描述:XTR112. XTR114 - 4-20mA CURRENT TRANSMITTERS with Sensor Excitation and Linearization
XTR112U 功能描述:電流靈敏放大器 4-20mA Crnt Trnsmtr w/Sensor Exc & Lin RoHS:否 制造商:Texas Instruments 通道數(shù)量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel
XTR112U/2K5 功能描述:IC 4-20MA I-TRANSMITTER 14-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件
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