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OP200GS

P1-P3P4-P6P7-P9P10-P12
REV. B
–7–
OP200
SUPPLY VOLTAGE – V
TOTAL SUPPLY CURRENT – mA
1.06
2 6 10 14 16
1.08
1.10
1.12
1.14
1.16
1.18
TWO AMPLIFIERS
T
A
= 25C
TPC 10. Total Supply Current
vs. Supply Voltage
–75
0.2
0.1
TEMPERATURE – C
POWER SUPPLY REJECTION –V/V
0.3
0.4
0.5
0.6
0.7
–50 –25 0 25 50 75 100 125
TPC 13. Power Supply Rejection
vs. Temperature
FREQUENCY – Hz
GAIN – dB
0
20
40
60
80
100
120
140
10 100 1k 10k 100k
T
A
= 25C
V
S
= 15V
A
V
= 1000
1M
A
V
= 100
A
V
= 10
A
V
= 1
TPC 16. Closed-Loop Gain
vs. Frequency
–75
1.11
TEMPERATURE – C
TOTAL SUPPLY CURRENT – mA
TWO AMPLIFIERS
V
S
= 15V
–50 –25 0 25 50 75 100 125
1.12
1.13
1.14
1.15
1.16
TPC 11. Total Supply Current
vs. Temperature
1000
0
OPEN-LOOP GAIN – V/mV
V
S
= 15V
R
L
= 2k
2000
3000
4000
5000
6000
–75
TEMPERATURE – C
–50 –25 0 25 50 75 100 125
TPC 14. Open-Loop Gain vs.
Temperature
FREQUENCY – Hz
OUTPUT SWING – V p-p AT 1% Distortion
0
5
10
15
20
25
30
10 100 1k 10k
T
A
= 25C
V
S
= 15V
100k
TPC 17. Maximum Output Swing
vs. Frequency
0.1
20
0
FREQUENCY – Hz
POWER SUPPLY REJECTION – nA
NEGATIVE
SUPPLY
110100 1k 10k 100k
40
60
80
100
POSITIVE
SUPPLY
120
140
T
A
= 25C
TPC 12. Power Supply Rejection
vs. Frequency
FREQUENCY – Hz
OPEN-LOOP GAIN – dB
0
20
40
60
80
100
120
140
10 100 1k 10k 100k
T
A
= 25C
V
S
= 15V
PHASE
GAIN
1M
–20
180
135
90
0
PHASE SHIFT – Degrees
TPC 15. Open-Loop Gain and
Phase Shift vs. Frequency
FREQUENCY – Hz
DISTORTION – %
1
10k1k100
0.001
T
A
= 25C
V
S
= 15V
V
OUT
= 10V p-p
R
L
= 2k
A
V
= 100
A
V
= 10
A
V
= 1
0.01
0.1
TPC 18. Total Harmonic Distortion
vs. Frequency
REV. B
OP200
–8–
0
5
30
25
20
10
15
0
CAPACITIVE LOAD – nF
OVERSHOOT – %
0.5 1.0 1.5
T
A
= 25C
V
S
= 15V
RISING
FALLING
1.0 1.5 3.0
35
40
45
50
TPC 19. Overshoot vs.
Capacitive Load
TPC 22. Large Signal
Transient Response
1/2
OP200AZ
V
OUT
V
OUT
= 5 +
40000
R
G
V
IN
+ V
REF
20k 5k
5k
1/2
OP200AZ
7
5
6
V
IN
V
REF
3
2
R
G
20k
–15V
+15V
1
8
4
Figure 4. Dual Low Power Instrumentation Amplifier
The output signal is specified with respect to the reference
input, which is normally connected to analog ground. The
reference input can be used to offset the output from –10 V
to +10 V if required.
Gain Bandwidth
5 150 kHz
10 67 kHz
100 7.5 kHz
1000 500 Hz
APPLICATIONS INFORMATION
The OP200 is inherently stable at all gains and is capable of
driving large capacitive loads without oscillating. Nonetheless,
good supply decoupling is highly recommended. Proper supply
decoupling reduces problems caused by supply line noise and
improves the capacitive load driving capability of the OP200.
APPLICATIONS
Dual Low-Power Instrumentation Amplifier
A dual instrumentation amplifier that consumes less than 33 mW
of power per channel is shown in Figure 4. The linearity of the
instrumentation amplifier exceeds 16 bits in gains of 5 to 200
and is better than 14 bits in gains from 200 to 1000. CMRR is
above 115 dB (gain = 1000). Offset voltage drift is typically
0.2 µV/°C over the military temperature range, which is compa-
rable to the best monolithic instrumentation amplifiers. The
bandwidth of the low power instrumentation amplifier is a func-
tion of gain and is shown below:
TIME – Minutes
SHORT-CIRCUIT CURRENT – mA
2
T
A
= 25C
V
S
= 15V
SOURCING
SINKING
22
23
24
25
26
27
28
29
01 345
TPC 20. Short-Circuit
Current vs. Time
TPC 23. Small Signal
Transient Response
FREQUENCY – Hz
CHANNEL SEPARATION – dB
100
10 100 1k 10k
100k
90
110
120
130
140
150
TPC 21. Channel Separation
vs. Frequency
TPC 24. Small Signal Transient
Response C
LOAD
= 1 nF
REV. B
OP200
–9–
Precision Absolute Value Amplifier
The circuit in Figure 5 is a precision absolute value amplifier
with an input impedance of 10 MΩ. The high gain and low
TCV
OS
of the OP200 ensure accurate operation with microvolt
input signals. In this circuit, the input always appears as a
common-mode signal to the op amps. The CMR of the OP200
exceeds 120 dB, yielding an error of less than 2 ppm.
1/2
OP200AZ
V
OUT
1/2
OP200AZ
7
6
5
V
IN
3
2
0V < V
OUT
< 10V
1
R1
1k
R3
1k
C1
30pF
D1
1N4148
C2
0.1pF
–15
D1
1N4148
R2
2k
C2
0.1pF
+15
8
4
Figure 5. Precision Absolute Value Amplifier
Precision Current Pump
Maximum output current of the precision current pump shown
in Figure 6 is ±10 mA. Voltage compliance is ± 10 V with ±15 V
supplies. Output impedance of the current transmitter exceeds
3 MΩ with linearity better than 16 bits.
1/2
OP200EZ
1/2
OP200EZ
5
6
V
IN
3
2
1
R5
100
–15
+15
I
OUT
7
R1
10k
R2
10k
R3
10k
R4
1k
I
OUT
=
=
V
IN
RS
V
IN
100
= 10mA/V
8
4
Figure 6. Precision Current Pump
Dual 12-Bit Voltage Output DAC
The dual output DAC shown in Figure 7 is capable of providing
untrimmed 12-bit accurate operation over the entire military
temperature range. Offset voltage, bias current, and gain errors
of the OP200 contribute less than 1/10 of an LSB error at 12
bits over the military temperature range.
OUTA
V
DD
–15V
OUTB
I
OUT
A
I
OUT
B
R
FB
A
AGND
5V
V
REF
A
V
REF
B
DAC A/DAC B
CS
WR
DAC
CONTROL
10V
REFERENCE
VOLTAGE
DAC-8222EW
DAC A
DAC B
1/2
OP200AZ
1/2
OP200AZ
23
2
3
4
5
6
7
8
18
19
20
21
22
1
24
4
2
3
DAC DATA BUS
PINS 6(MSB) – 17(LSB)
5
1
1/2
DAC8212AV
1/2
DAC8212AV
R
FB
B
DGND
–
–
Figure 7. Dual 12-Bit Voltage Output DAC
P1-P3P4-P6P7-P9P10-P12

OP200GS

Mfr. #:
Buy OP200GS
Manufacturer:
Analog Devices Inc.
Description:
Operational Amplifiers - Op Amps Low Offset Low Power Mono Dual
Lifecycle:
New from this manufacturer.
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