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PDF ISO102B Data sheet ( Hoja de datos )
| Número de pieza | ISO102B | |
| Descripción | SIGNAL ISOLATION BUFFER AMPLIFIERS | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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® ISO102
ISO106
SIGNAL ISOLATION BUFFER AMPLIFIERS
FEATURES
q 14-BIT LINEARITY
q INDUSTRY’S FIRST HERMETIC
ISOLATION AMPLIFIERS AT LOW COST
q EASY-TO-USE COMPLETE CIRCUIT
q RUGGED BARRIER, HV CERAMIC
CAPACITORS
q 100% TESTED FOR HIGH VOLTAGE
BREAKDOWN
ISO102: 4000Vrms/10s, 1500Vrms/1min
ISO106: 8000Vpk/10s, 3500Vrms/1min
q ULTRA HIGH IMR: 125dB min at 60Hz,
ISO106
q WIDE INPUT RANGE: –10V to +10V
q WIDE BANDWIDTH: 70kHz
q VOLTAGE REFERENCE OUTPUT: 5VDC
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL
Transducer channel isolator for thermo-
couples, RTDs, pressure bridges, flow
meters
q 4mA TO 20mA LOOP ISOLATION
q MOTOR AND SCR CONTROL
q GROUND LOOP ELIMINATION
q BIOMEDICAL/ANALYTICAL
MEASUREMENTS
q POWER PLANT MONITORING
q DATA ACQUISITION/TEST EQUIPMENT
ISOLATION
q MILITARY EQUIPMENT
DESCRIPTION
The ISO102 and ISO106 isolation buffer amplifiers
are two members of our series of capacitive coupled
isolation products from Burr-Brown. They have the
same electrical performance and they differ in accu-
racy. The ISO102 is rated for 1500Vrms in a 24-pin
DIP. The ISO106 is rated for 3500Vrms in a 40-pin
DIP. Both side-brazed DIPs are 600mil wide and have
industry standard package dimensions with the excep-
tion of missing pins between input and output stages.
This permits utilization of automatic insertion tech-
niques in production. The three-chip hybrid with its
generous high voltage spacing is easy to use (no
external components are required).
Each buffer accurately isolates ±10V analog signals
by digitally encoding the input voltage and uniquely
coupling across a differential ceramic capacitive bar-
Covered by patent number 4,748,419 and others pending.
rier. All elements necessary for operation are con-
tained within the DIP. This provides compact signal
isolation in a hermetic package.
+VCC1
–VCC1
Gain
Adjust
Isolation
Barrier
+VCC2
–VCC2
Digital
Common
VIN
Offset
Adjust
Offset
Reference 1
Common 1
+5V
VOUT
C1
C2
+5V Reference2
Common 2
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1987 Burr-Brown Corporation
PDS-1716F
ISOPr1int0ed2in/1U.0S.A6. January, 1995
®
1 page  
TYPICAL PERFORMANCE CURVES
TA = +25°C, VCC = ±15VDC unless otherwise noted.
160
140
120
100
80
60
10
ISOLATION-MODE REJECTION
vs ISOLATION VOLTAGE FREQUENCY
ISO106
ISO102
100 1k 10k 100k
Isolation Voltage Frequency (Hz)
1M
10m
1m
100µ
10µ
1µ
100n
10
ISOLATION LEAKAGE CURRENT
vs ISOLATION VOLTAGE FREQUENCY
Isolation Voltage = 240Vrms
100 1k 10k 100k
Isolation Voltage Frequency (Hz)
1M
∆ GAIN ERROR AND ∆ OFFSET VOLTAGE
vs ISOLATION VOLTAGE
12
T = TMIN to TMAX
0.5 1
Gain
00
Offset
–0.5 –1
–1
0
Isolation Voltage (V)
–2
Rated
POWER DISSIPATION vs TEMPERATURE
1.6
1.57
±20
1.4
Maximum Junction
Temperature = 150°C
1.2
1.178
Maximum Junction
Temperature = 160°C
±15
1
Slope = θJA = 40°C/W
P D MAX = (TJ MAX – TA )/θJA
0.8
0.785
±10
0
–25
85 95 105 115 125
Ambient Temperature (°C)
0
135
BANDWIDTH CONTROL
1M
100k
10k
C2 = 2 (C1)
1k
100
See Figure 4
10
1
3p
30p 300p
3n
30n 300n
C1 (F)
3µ
DYNAMIC RANGE vs BANDWIDTH
120
110
See “Bandwidth
Control” Curve
100
90
VOUT = ±1V
VOUT = ±10V
80
See Figure 4
70
BW — 1
10 100 1k 10k
Small Signal Bandwidth (Hz)
C1— 3µ
300n
30n
3nF 300p
Bandwidth Control Capacitors (F)
100k
30p
®
5 ISO102/106
5 Page 
Thermometrics Thermistor
B43KB753F
133.3kΩ
+15V –15V +15V 1–5V
+5V Ref. 40
1
37
20
206.9kΩ
75kΩ
69.76kΩ
38
2
1/2 +0.5V to +2.5V
LM358
ISO
21
106
18
24
22
VOUT
2.5V
4
0
10°C
50°F
0.5V
30°C
86°F
FIGURE 8. Isolated RTD Temperature Amplifier.
+5V
Reference 7 +15V
5
6
–5V
Reference
VIN
25kΩ
25kΩ
INA105
25kΩ
41
–15V
3
2
+15V –15V +15V 1– 5V
40
37 1
20
38 21
22
ISO 106
2 VOUT
18
24
4
Digital
Optocoupler
AO
A1
+15V –15V +15V 1– 5V
24
1
1 21 12
62
13
7 15 22
14
PGA102
ISO 102
8
5
VIN
4
3
2
16
10
VOUT
4
FIGURE 9. Programmable-Gain Isolation Channel with Gains
of 1, 10, and 100.
FIGURE 10. Isolation Amplifier with Isolated Bipolar Input
Reference.
Channel
1
*Supplies 15mA (35mA
max) of isolated supply
current per channel.
Bridge Rectifier Transformer
PWS740-3 PWS740-2
Oscillator/Driver
PWS740-1
T
+VCC
T
+15V
Input Common*
–15V
0.1µF
Power to
Other 7
Channels
0.1µF
1
4
1µF
100µH/0.1Ω
0.33µF
24
12
14
VIN1 ISO 102
2 16
+5V Reference Out
21 22
10
13
–15V
Input From
Other 7
Channels
Offset
Uses 8 ISO102s, 1 isolator/driver, 8 transformers, and 8 rectifiers.
13
4
5
6
7
12
11
10
9
–15V
3
+15V
1
A0
16
A1
8
VOUT
14
FIGURE 11. Low Cost Eight-Channel Isolation Amplifier Block with Channel-to-Channel Isolation.
11 ISO102/106
Analog
Ground
Digital
Ground
®
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet ISO102B.PDF ] | |
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