www.fairchildsemi.com
RC4207
Precision Monolithic Dual Operational Amplifier
Features
•
•
•
•
•
Low Noise – 0.35 mVp-p (0.1 Hz to 10 Hz)
Ultra-low VOS – 75 mV
Ultra-low VOS drift – 1.3 mV/°C
Long term VOS stability – 0.2 mV/Mo
Low input bias and offset currents – ±5 nA
•
•
•
•
High gain – 400 V/mV
Fits 4558 socket
Industry standard pinout
8-lead mini-DIP
Description
Designed for low level signal conditioning and instrumentation applications, the 4207 is a precision dual amplifier
combining excellent DC input specifications with low input
noise characteristics. Ultra low input offset voltage, low
drift, high CMRR, and low input bias currents serve to
reduce input related errors to less than 0.01% in a typical
high gain instrumentation amplifier system (AV = 1000). The
4207 contains two separate amplifiers with a high degree of
isolation between them; each is complete requiring no external compensation capacitors or offset nulling potentiometers.
The inherent VOS is typically less than 150 mV, resulting in
superior temperature drift, and this low initial offset is further reduced by "Zener-zap" nulling when the wafers are
tested.
Block Diagram
Pin Assignments
Output A
+VS
–Input A
A
B
Output B
+Input A
–Input B
–VS
+Input B
Advanced thin film and nitride dielectric processing allows
the 4207 to achieve its high performance and small size (the
4207 is offered in 8-lead DIPs). The 4207 fits the industry
standard 8-lead op amp pin-out.
Output A
1
8
+VS
–Input A
2
7
Output B
+Input A
3
6
–Input B
–VS
4
5
+Input B
65-4207-02
65-3468-01
Rev. 1.0.1
PRODUCT SPECIFICATION
RC4207
Absolute Maximum Ratings
(beyond which the device may be damaged)1
Parameter
Min
Typ
Supply Voltage
Input
Voltage2
Max
Units
±18
V
±18
V
Differential Input Voltage
30
V
Internal Power Dissipation3
500
mW
PDTA < 50°C
468
mW
Output Short Circuit Duration
Indefinite
125
°C
-65
150
°C
0
70
°C
300
°C
Junction Temperature
Storage Temperature
Operating Temperature
Lead Soldering Temperature (60 sec)
For TA > 50°C Derate at
6.25
mW/°C
Notes:
1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if
Operating Conditions are not exceeded.
2. For supply voltages less than ±18V, the absolute maximum input voltage is equal to the supply voltage.
3. Observe package thermal characteristics.
Operating Conditions
Parameter
qJA
Min
Thermal resistance
Typ
Max
Units
°C/W
160
Electrical Characteristics
(VS = ±15V, 0°C £ TA £ +70˚C unless otherwise noted)
4207F
Parameters
Test Conditions
Min
Input Offset Voltage
Average Input Offset Voltage
Drift2
Typ
Max
45
150
Min
Typ
Max
Units
85
250
mV
0.3
1.3
0.7
Input Offset Current
±2.0
±10
±1.6
Average Input Offset Current Drift
8.0
Input Bias Current
±2.0
Average Input Bias Current Drift
mV/°C
±15
12
±10
±3.0
13
nA
pA/°C
±15
18
nA
pA/°C
±10
±13.5
±10
±13.5
V
Common Mode Rejection Ratio
VCM = ±10V
94
120
92
106
dB
Power Supply Rejection Ratio
VS = ±4.0V to
±16.5V
94
115
92
100
dB
Large Signal Voltage Gain
RL > 2.0kW,
VOUT = ±10V
200
450
75
400
V/mV
Maximum Output Voltage Swing
RL > 2.0kW
±11
±12.6
±11
±12.6
Power Consumption
RL = ¥
Input Voltage Range
2
4207G
150
240
150
V
240
mW
RC4207
PRODUCT SPECIFICATION
Electrical Characteristics
(VS = ±15V, and TA = +25°C unless otherwise noted)
4207F
Parameters
Test Conditions
Min
3
Input Offset Voltage
Long Term VOS
Stability1
4207G
Typ
Max
30
75
Min
0.2
Typ
Max
Units
60
150
mV
mV/Mo
0.5
Input Offset Current
±0.5
±5
±2
±10
nA
Input Bias Current
±0.5
±5
±2
±10
nA
Input Noise Voltage
0.1 Hz to 10 Hz
0.35
0.35
Input Noise Voltage Density
FO = 10 Hz
10.3
10.3
FO = 100 Hz
10
10
FO = 1000 Hz
9.6
9.6
Input Noise Current
0.1 Hz to 10 Hz
14
14
Input Noise Current Density
FO = 10 Hz
0.32
0.32
FO = 100 Hz
0.14
0.14
FO = 1000 Hz
mVp-p
nV
----------Hz
pAp-p
pA
----------Hz
0.12
0.12
Input Resistance (Diff. Mode)
60
31
MW
Input Resistance (Com. Mode)
200
120
GW
Input Voltage
Range4
Common Mode Rejection Ratio
VCM = ±11V
±11
±14
±11
±14
V
100
126
94
110
dB
Power Supply Rejection Ratio
VS = ±4.0V to ±16.5V
100
110
94
104
dB
Large Signal Voltage Gain
RL ³ 2kW,
VOUT = ±10V
400
600
250
400
V/mV
VOUT = ±1.0V
RL = 1KW, VS = ±4.0V
200
400
100
200
RL ³ 10kW
±12.5
±13
±12.5
±13
RL ³ 2kW
±12
±12.8
±12
±12.8
RL ³ 1kW
±11
±12
±11
±12
Slew Rate
RL ³ 2kW
0.1
0.3
0.1
0.3
V/ms
Closed Loop Bandwidth
AVOL = +1.0
1.5
MHz
Output Voltage Swing
1.5
V
W
Open Loop Output Resistance
VOUT = 0, IOUT = 0
60
Power Consumption
VS = ±15V, RL = ¥
150
200
160
240
VS = ±4.0V, RL = ¥
35
50
48
64
Crosstalk
DC
126
155
60
126
155
mW
dB
Notes:
1. Long Term Input Offset Voltage Stability refers to the averaged trend line of VOS vs. Time over extended periods after the
first 30 days of operation. Excluding the initial hour of operation, changes in VOS during the first 30 operating days are typically
2.5 mV.
2. Guaranteed by design.
3. Input Offset Voltage measurements are performed by automated test equipment approximately 0.5 seconds after application
of power.
4. The input protection diodes do not allow the device to be removed or inserted into the circuit without first removing power.
3
PRODUCT SPECIFICATION
RC4207
Typical Performance Characteristics
+120
At V DIFF
+80
50
25
0
+50
0.5V I B
-40
0
0
-40
+40
VS = 15V
T A = +25 C
-120
-30
+100
-20
-10
+80
+120
+30
+20
65-0368
Figure 2. Input Bias Current vs.
Differential Input Voltage
2.5
8
VS = 15V
2.0
IOS (nA)
4
2
-50
0
+50
1.5
1.0
0.5
65-0369
0
V S = 15V
65-0370
6
IB (nA)
+10
0
VDIFF (V)
Figure 1. Input Offset Voltage vs. Temperature
0
-50
+100
0
Figure 3. Input Bias Current vs. Temperature
Figure 4. Input Offset Current vs. Temperature
120
120
110
110
100
PSRR (dB)
130
100
90
80
T A = +25 C
90
80
10
1K
100
10K
F (Hz)
Figure 5. CMRR vs. Frequency
100K
65-0372
65-0371
70
70
60
1.0
+100
+50
TA (¡C)
TA (¡C)
CMRR (dB)
-80
+40
TA (¡C)
4
3nA
-80
65-0366
0
-50
-120
-IB (mA)
VS = ±15V
R = 100½
+IB (mA)
VOS ( µV)
85
75
60
50
0.1
1.0
10
100
F (Hz)
Figure 6. PSRR vs. Frequency
1K
10K
RC4207
PRODUCT SPECIFICATION
Typical Performance Characteristics (continued)
1000
120
T A = +25 C
VS = 15V
T A = +25 C
80
600
400
65-0373
200
0
5
0
10
15
40
0
-40
0.1
20
65-0374
AVOL (dB)
AVOL (V/mV)
800
1
10
100
±VS (V)
10K 100K 1M
10M
F (Hz)
Figure 7. Open Loop Gain vs. Supply Voltage
Figure 8. Open Loop Gain vs. Frequency
100
28
24
60
VOUTp-p (V)
V S = 15V
T A = +25 C
80
40
20
V S = 15V
T A = +25 C
20
16
12
-20
100
1K
10K
100K
1M
4
0
10M
1
10
100
F (Hz)
1000
F (kHz)
Figure 9. Closed Loop Response for
Various Gain Configurations
Figure 10. Maximum Undistorted Output
vs. Frequency
20
VS = 15V
T A = +25¡C
V IN = 10mV
15
+VOUT
-VOUT
10
5
65-0377
0
65-0376
65-0375A
8
0
VOUT (V)
AVCL (dB)
1K
0
0.1
1.0
10
RL (k½)
Figure 11. Output Voltage vs. Load Resistance to Ground
5
PRODUCT SPECIFICATION
RC4207
Typical Performance Characteristics (continued)
60
1000
T A = +25 C
1. VIN (Pin 3) = -10mV, VOUT = +15V
2. VIN (Pin 3) = +10mV, VOUT = -15V
50
ISC (mA)
10
1
40
2
65-0378A
30
1
0
20
40
VS = 15V
T A = +25 C
65-0379
PC (mW)
100
20
50
0
1
2
+VS to -VS (V)
3
4
Time (Min)
Figure 12. Power Consumption vs. Total Supply Voltage
Figure 13. Output Short Circuit Current vs. Time
Typical Applications
Sensing
Junction
V1
R2
10K
R3
R1
R4
10K
R1
10K
+15V
+15V
V2
2
R3
10K
8
1/2 4207
V3
2
8
1/2 4207
1
VOUT
3
VOUT
3
1
Reference
Junction
4
R2
4
-15V
R5
2.5K
-15V
R4
R1 = R2 = R3 = R4
R1
R2
R3
R4
65-0381
65-0382
Figure 14. Adjustment-Free Precision Summing Amplifier
R4
10K
R3
10K
VIN
±10V
R1
10K
Figure 15. High Stability Thermocouple Amplifier
R5
10K
+15V
+15V
2
D1
8
1/2 4207
A
3
4
1
6
8
1/2 4207
B
5
4
7
VOUT
0 to +10V
D2
-15V
-15V
VA
R2
10K
Figure 16. Precision Absolute Value Circuit
6
65-0383
+Input A
(3)
-Input A
(2)
R1D
15.7K
R25
200
R24
200
R1E
36.6K
D1
Z1
Amplifier A
Z2
D2
R1C
5.3K
Z3
R11
16K
Q20
2X
Q1
2X
R1B
5K
Z4
R12
10K
Q2
2X
R2A
125K
C1
30 pF
R2C
2.4K
R22
32K
Q47
Q4
R23
10K
Q21
Q6
Q5
Q3
R2B
5K
(4)
-VS
C3
75 pF
R27
1.2K
Q26
Q30
Q23
Q48
R28
2K
Q25
Q29
R6
200
Q7
R7
200
Q12
R5
30K
R3
750
R14
5K
Q9
R4
750
C2A
50 pF
Q33
R19
250
.75 .25
Q8
Q10
Q24
Q31
R8
2K
R13
5K
Q11
R29
360
C2B
20
R9
50
Q13
D3
R15
84
Q34
R20
188
R10
180
Q22
Q14
Q55
Q32
R18
20
R26
1K
Q17
Q16
R17
20
Q49
Q19
Q15
Q18
R16
1.5K
Q35
R21
450
+VS
(8)
Q39
R34
1.5K
Output B
(7)
Q45
R31
375
R30
800
Q40
Q42
Q56
.67
Q37
.33
R33
1.5K
Q53
Q36
Q38
Output A
(1)
Q57
Q44
Q43
Q50
Q51
Q52
R32
100K
Q54
Q41
65-2660
Amplifier B
+Input B
(5)
-Input B
(6)
RC4207
PRODUCT SPECIFICATION
Schematic Diagram
7
PRODUCT SPECIFICATION
RC4207
Mechanical Dimensions – 8-Lead Plastic DIP Package
Inches
Symbol
A
A1
A2
B
B1
C
D
D1
E
E1
e
eB
L
Millimeters
Min.
Max.
Min.
Max.
—
.015
.115
.014
.045
.008
.348
.005
.300
.240
.210
—
.195
.022
.070
.015
.430
—
.325
.280
—
.38
2.93
.36
1.14
.20
8.84
.13
7.62
6.10
5.33
—
4.95
.56
1.78
.38
10.92
—
8.26
7.11
.100 BSC
—
.430
.115
.160
2.54 BSC
—
10.92
2.92
4.06
8¡
8¡
N
Notes:
Notes
1. Dimensioning and tolerancing per ANSI Y14.5M-1982.
2. "D" and "E1" do not include mold flashing. Mold flash or protrusions
shall not exceed .010 inch (0.25mm).
3. Terminal numbers are for reference only.
4. "C" dimension does not include solder finish thickness.
5. Symbol "N" is the maximum number of terminals.
4
2
2
5
D
4
1
5
8
E1
D1
E
e
A2
A
A1
C
L
B1
8
B
eB
PRODUCT SPECIFICATION
RC4207
Ordering Information
Product Number
Temperature Range
Screening
Package
RC4207FN
0° to +70°C
Commercial
8 Pin Plastic DIP
RC4207GN
0° to +70°C
Commercial
8 Pin Plastic DIP
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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