參數(shù)資料
型號(hào)： XTR108
英文描述： 4-20mA, TWO-WIRE TRANSMITTER Smart Programmable with Signal Conditioning
中文描述： 的4 - 20mA，兩線(xiàn)制變送器可編程智能與信號(hào)調(diào)理
文件頁(yè)數(shù)： 3/27頁(yè)
文件大?。?/td> 497K
代理商： XTR108
XTR108
SBOS187B
3
www.ti.com
ELECTRICAL CHARACTERISTICS
(Cont.)
Boldface
limits apply over the specified temperature range,
T
A
=
–
40
°
C to +85
°
C.
At T
A
= +25
°
C, V
PS
= 24V, and Supertex DN2540 external depletion-mode FET transistor, unless otherwise noted, all voltages measured with respect to I
RET
pin.
XTR108EA
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
PGA (Cont.)
Input Impedance: Differential
Input Impedance: Common-Mode
Voltage Noise, 0.1Hz to 10Hz
PGA Gain
Gain Range Steps
Initial Error
30 || 6
50 || 20
6
G
|| pF
G
|| pF
μ
Vp-p
6.25, 12.5, 25, 50, 100, 200, 400
Gain = 6.25, 12.5, 25, 50
G = 100, 200
G = 400
6.25
400
±
2.5
±
3
±
3.5
V/V
%
%
%
±
0.5
±
0.5
±
0.8
±
30
vs Temperature
Output Voltage Range
(5)
Typical Operating Range
Capacitive Drive
Short-Circuit Current
ppm/
°
C
V
V
pF
mA
R
= 6.34k
to I
for 4-20mA XTR Output
0.2
4.5
0.5 to 2.5
200
+6/
–
9
ZERO OFFSET DACS
Zero-Code Output Level
RTO
(6)
of Current Amplifier
RTO
(6)
of PGA
Coarse DAC, 256 Steps
Adjustment Range
RTO
(6)
of Current Amplifier
RTO
(6)
of PGA
Step Size
RTO
(6)
of Current Amplifier
RTO
(6)
of PGA
Linearity
Fine DAC, 256 Steps
Adjustment Range
RTO
(6)
of Current Amplifier
RTO
(6)
of PGA
Step Size
RTO
(6)
of Current Amplifier
RTO
(6)
of PGA
Linearity
Noise, RTO
(6)
V
CM
= 1V, V
= 0V
R
V/I
= 6.34k
4.116
522
mA
mV
7 Bits + Sign
Relative to Zero-Code Level
–
3.77 to +3.77
–
470 to +470
mA
mV
0.029
3.7
±
0.5
mA
mV
LSB
Relative to Zero-Code Level
7 Bits + Sign
–
236 to +236
–
29.4 to +29.4
μ
A
mV
0.0018
0.23
±
1
1.1
mA
mV
LSB
μ
Ap-p
f = 0.1Hz to 10Hz
CURRENT AMPLIFIER
Current Gain
Current Gain Drift
49
50
10
51
A/A
ppm/
°
C
CURRENT SOURCES, I
AND I
REF2
Zero-Code Output Level, Each
Coarse DAC, 256 Steps
Adjustment Range
(7)
Step Size
Fine DAC, 256 Steps
Adjustment Range
(7)
Step Size
Linearity
Coarse
Fine
vs Temperature
Matching
vs Temperature
Compliance Voltage, Positive
(5)
Output Impedance
Current Noise
R
SET
= 12.1k
480
493
510
μ
A
7 Bits + Sign
–
195 to +195
1.54
7 Bits + Sign
–
12.2 to +12.2
96
μ
A
μ
A
μ
A
nA
±
0.2
±
0.5
±
35
±
0.2
±
10
V
S
–
1.5
100
0.015
LSB
LSB
ppm/
°
C
%
ppm/
°
C
V
M
μ
Ap-p
V
S
–
2
f = 0.1Hz to 10Hz
LINEARIZATION DAC
Linearization Range, 256 Steps
Max Linearization Coefficient
Step Size
8 Bits
0.99
3.9
I
REF
/
V
IN
, R
LIN
= 15.8k
μ
A/mV
nA/mV
SUB REGULATOR, V
S
Voltage
vs Temperature
vs Loop-Supply Voltage
Supply Voltage for XTR
4.8
5.1
±
50
±
0.03
5.4
V
ppm/
°
C
mV/V
V
LOOP
= 7.5V to 24V
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參數(shù)描述
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