RCV420JP 반도체 회로 부품 판매점
Precision 4mA to 20mA CURRENT LOOP RECEIVER
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 Burr-Brown Corporation |
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RCV420
RCV420
Precision 4mA to 20mA
CURRENT LOOP RECEIVER
FEATURES
q COMPLETE 4-20mA TO 0-5V CONVERSION
q INTERNAL SENSE RESISTORS
q PRECISION 10V REFERENCE
q BUILT-IN LEVEL-SHIFTING
q ±40V COMMON-MODE INPUT RANGE
q 0.1% OVERALL CONVERSION ACCURACY
q HIGH NOISE IMMUNITY: 86dB CMR
DESCRIPTION
The RCV420 is a precision current-loop receiver de-
signed to convert a 4–20mA input signal into a 0–5V
output signal. As a monolithic circuit, it offers high
reliability at low cost. The circuit consists of a pre-
mium grade operational amplifier, an on-chip precision
resistor network, and a precision 10V reference. The
RCV420 features 0.1% overall conversion accuracy,
86dB CMR, and ±40V common-mode input range.
The circuit introduces only a 1.5V drop at full scale,
which is useful in loops containing extra instrument
burdens or in intrinsically safe applications where
APPLICATIONS
q PROCESS CONTROL
q INDUSTRIAL CONTROL
q FACTORY AUTOMATION
q DATA ACQUISITION
q SCADA
q RTUs
q ESD
q MACHINE MONITORING
transmitter compliance voltage is at a premium. The
10V reference provides a precise 10V output with a
typical drift of 5ppm/°C.
The RCV420 is completely self-contained and offers a
highly versatile function. No adjustments are needed
for gain, offset, or CMR. This provides three important
advantages over discrete, board-level designs: 1) lower
initial design cost, 2) lower manufacturing cost, and
3) easy, cost-effective field repair of a precision circuit.
RCV420
V+
16
–In 1
300kΩ
RS
75Ω
CT 2
RS
75Ω
+In 3
300kΩ
V– Ref In
4 12
99kΩ
92kΩ
11.5kΩ
1.01kΩ
+10V
Ref
100kΩ
13
Rcv
Com
5
Ref
Com
15 Rcv fB
14 Rcv Out
11 Ref Out
10 Ref fB
8 Ref Trim
7 Ref Noise Reduction
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1988 Burr-Brown Corporation
PDS-1837E
RCV420Printed in U.S.A. October, 1997
®
SPECIFICATIONS
ELECTRICAL
At T = +25°C and VS = ±15V, unless otherwise noted.
CHARACTERISTICS
GAIN
Initial
Error
Error—JP Grade
vs Temp
Nonlinearity(1)
OUTPUT
Rated Voltage (IO = +10mA, –5mA)
Rated Current (EO = 10V)
Impedance (Differential)
Current Limit (To Common)
Capacitive Load
(Stable Operation)
INPUT
Sense Resistance
Input Impedance (Common-Mode)
Common-Mode Voltage
CMR(2)
vs Temp (DC) (TA = TMIN to TMAX)
AC 60Hz
OFFSET VOLTAGE (RTO)(3)
Initial
vs Temp
vs Supply (±11.4V to ±18V)
vs Time
ZERO ERROR(4)
Initial
Initial—JP Grade
vs Temp
OUTPUT NOISE VOLTAGE
fB = 0.1Hz to 10Hz
fO = 10kHz
DYNAMIC RESPONSE
Gain Bandwidth
Full Power Bandwidth
Slew Rate
Settling Time (0.01%)
VOLTAGE REFERENCE
Initial
Trim Range(5)
vs Temp
vs Supply (±11.4V to ±18V)
vs Output Current (IO = 0 to +10mA)
vs Time
Noise (0.1Hz to 10Hz)
Output Current
POWER SUPPLY
Rated
Voltage Range(6)
Quiescent Current (VO = 0V)
TEMPERATURE RANGE
Specification
Operation
Storage
Thermal Resistance, θJA
MIN
10
+10, –5
74.25
70
74
9.99
+10, –2
–5, +11.4
0
–25
–40
RCV420KP, JP
TYP
0.3125
0.05
15
0.0002
12
0.01
+49, –13
1000
75
200
80
76
80
10
90
200
0.025
10
50
800
150
30
1.5
10
±4
5
0.0002
0.0002
15
5
±15
3
80
MAX
0.15
0.25
0.002
75.75
±40
1
0.075
0.15
10.01
±18
4
+70
+85
+85
UNITS
V/mA
% of span
% of span
ppm/°C
% of span
V
mA
Ω
mA
pF
Ω
kΩ
V
dB
dB
dB
mV
µV/°C
dB
µV/mo
% of span
% of span
ppm of
span/°C
µVp-p
nV/√Hz
kHz
kHz
V/µs
µs
V
%
ppm/°C
%/V
%/mA
ppm/kHz
µVp-p
mA
V
V
mA
°C
°C
°C
°C/W
NOTES: (1) Nonlinearity is the max peak deviation from best fit straight line. (2) With 0 source impedance on Rcv Com pin. (3) Referred to output with all inputs
grounded including Ref In. (4) With 4mA input signal and Voltage Reference connected (includes VOS, Gain Error, and Voltage Reference Errors). (5) External trim
slightly affects drift. (6) IO Ref = 5mA, IO Rcv = 2mA.
®
RCV420
2
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RCV420JP receiver
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