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FEATURES Low Input Offset Voltage 150 V Max Low Offset Voltage Drift, Over -55 C to +125 C 1.2 pV/ C Max Low Supply Current (Per Amplifier) 725 A Max High Open-Loop Gain 5000 V/mV Min Input Bias Current 3 nA Max Low Noise Voltage Density 11 nV//Hz at 1 kHz Stable With Large Capacitive Loads 10 nF Typ Pin Compatible to LM148, HA4741, RM4156, and LT1014 with Improved Performance Available in Die Form GENERAL DESCRIPTION
Quad Low-Offset, Low-Power Operational Amplifier OP400
PIN CONNECTIONS 14-PIN HERMETIC DIP
(Y-Suffix)
16-PIN SOL
(S-Suffix)
14-PIN PLASTIC DIP
(P-Suffix)
The OP400 is the first monolithic quad operational amplifier that features OP77 type performance. Precision performance no longer has to be sacrificed to obtain the space and cost savings offered by quad amplifiers. The OP400 features an extremely low input offset voltage of less than 150 mV with a drift of under 1.2 mV/C, guaranteed over the full military temperature range. Open-loop gain of the OP400 is over 5,000,000 into a 10 kW load, input bias current is under 3 nA, CMR is above 120 dB, and PSRR is below 1.8 mV/V. On-chip zener-zap trimming is used to achieve the low input offset voltage of the OP400 and eliminates the need for offset nulling. The OP400 conforms to the industry-standard quad pinout which does not have null terminals.
The OP400 features low power consumption, drawing less than 725 mA per amplifier. The total current drawn by this quad amplifier is less than that of a single OP07, yet the OP400 offers significant improvements over this industry standard op amp. Voltage noise density of the OP400 is a low 11 nV//Hz at 10 Hz, which is half that of most competitive devices. The OP400 is pin-compatible with the LM148, HA4741, RM4156, and LT1014 operational amplifiers and can be used to upgrade systems using these devices. The OP400 is an ideal choice for applications requiring multiple precision operational amplifiers and where low power consumption is critical.
Figure 1. Simplified Schematic (One of Four Amplifiers is Shown)
REV. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 (c) Analog Devices, Inc., 2002
OP400-SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (@ V = 15 V, T = 25 C, unless otherwise noted.)
S A
Parameter Input Offset Voltage Long-Term Input Voltage Stability Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density1 Input Noise Current Input Noise Current Density Input Resistance Differential Mode Input Resistance Common Mode Large Signal Voltage Gain
Symbol Conditions VOS
Min
OP400A/E Typ Max 40 0.1 150
Min
OP400F Typ Max 60 0.1 230
Min
OP400G/H Typ Max 80 0.1 300
Unit mV mV/mo
IOS IB en p-p en
VCM = V VCM = V 0.1 Hz to 10 Hz fO = 10 Hz1 fO = 1000 Hz1 0.1 Hz to 10 Hz fO= 10 Hz
0.1 0.75 0.5 22 11 15 0.6 10 200
1.0 3.0
0.1 0.75 0.5
2.0 6.0
0.1 0.75 05
3.5 7.0
nA nA mV p-p nV//Hz pAp-p pA//Hz MW GW
36 18
22 11 15 0.6 10 200
36 18
22 11 15 0.6 10 200
in p-p in RIN RINCM AVO
VO = 10 V RL = 10 kW RL = 2 kW
5000 2000 12
12000 3500 13 140
3000 1500 12 115
7000 3000 13 140
3000 1500 12 110
7000 3000 13 135
V/mV V dB mV/V V mA V/ms kHz dB
Input Voltage Range3 Common Mode Rejection Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier Slew Rate Gain Bandwidth Product Channel Separation Input Capacitance Capacitive Load Stability
IVR CMR PSRR VCM = 12 V VS = 3 V to 18 V RL = 10 kW RL = 2 kW No Load
120
0.1 12 11 12.6 12.2 600 0.15 500 123 135
1.8 12 11 725 0.1
0.1 12.6 12.2 600 0.15 500 123 135
3.2 12 11 725 0.1
0.2 12.6 12.2 600 0.15 500 123 135
56
VO
ISY SR GBWP CS
725
0.1 AV = 1 VO = 20 V p-p fO = 10 Hz2
CIN AV = 1 No Oscillations
3.2
3.2
3.2
pF
10
10
10
nF
NOTES 1 Sample tested 2 Guaranteed but not 100% tested. 3 Guaranteed by CMR test
-2-
REV. A
OP400
SPECIFICATIONS (continued)
ELECTRICAL CHARACTERISTICS (@ V = 15 V, -55 C < T = 125 C for OP400A, unless otherwise noted.)
S A
Parameter Input Offset Voltage Average Input Offset Voltage Drift Input Offset Current Input Bias Current Large Signal Voltage Gain Input Voltage Range* Common Mode Rejection Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier Capacitive Load Stability
NOTE
*Guaranteed by CMR test
Symbol VoS TCVOS IOS IB AVO IVR CMR PSRR VO ISY
Conditions
Min
VCM = 0 V VCM = 0 V VO = 10 V RL = 10 kW RL = 2 kW VCM = 12 V VO = 3 V to 18 V RL = 10 kW RL = 2 kW No Load AV = 1 No Oscillations
3000 1000 12 115 12 11
Typ 70 0.3 01 1.3 9000 2300 12.5 130 0.2 12.4 12 600 8
Max 270 12 2.5 5.0
Unit mV mV/C nA nA V/mV V dB mV/V V mA nF
3.2
775
ELECTRICAL CHARACTERISTICS
Parameter Input Offset Voltage Average Input Offset Voltage Drift Input Offset Current Symbol Conditions VOS TCVOS IOS VCM = 0 V E, F, G Grades H Grade VCM = 0 V E, F, G Grades H Grade VCM = 0 V RL = 10 kW RL = 2 kW
*
(@ VS = 15 V, -25 C < TA S 85 C for OP400E/F, 0 C S TA < 70 C for OP400G, -40 C < TA < +85 C for OP400H, unless otherwise noted.)
Min OP400A/E Typ Max 60 03 220 1.2 Min OP400F Typ Max 80 0.3 350 2.0 Min OP400G/H Typ Max 110 0.6 400 2.5 Unit mV mV/C
0.1
2.5
0.1
3.5
0.2 0.2
6.0 12.0
nA
Input Bias Current
IB
0.1
2.5
0.1
3.5
1.0 1.0
12.0 20.0
nA
Large-Signal Voltage Gain
AVO
3000 1500 12 115
10000 2700 12.5 135
2000 1000 12 110
5000 2000 12.5 135
2000 1000 12 105
5000 2000 12.5 130
V/mv V dB mV/V V mA nF
Input Voltage Range Common-Mode Rejection Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier Capacitive Load Stability
NOTE
*Guaranteed by CMR test.
IVR CMR PSRR
VCM = 12 V VS = 3 V to 18 V RL = 10 kW RL = 2 kW No Load No Oscillations
0.15 12 11
3.2 12.4 12 600 10 775
0.15 12 11
5.6 12.4 12 600 10 775
0.3 12 11
10.0 12.6 12.2 600 10 775
VO ISY
REV. A
-3-
OP400
ORDERING INFORMATION DICE CHARACTERISTICS
TA = 25 C VOS Max (mV) 150 150 230 300 300 300 300
Package CerDIP 14-Lead Plastic OP400AY OP400EY OP400FY OP400GP OP400GS OP400HP OP400HS
Operating Temperature Range MIL IND IND COM COM XIND XIND
NOTES 1 For devices processed in total compliance to MIL-STD-883, add/883after part number. Consult factory for 883 data sheet. 2 Burn-in is available on commercial and industrial temperature range parts in CerDIP, plastic DIP, and TO-can packages.
DIE SIZE 0.181 0.123 inch, 22,263 sq. milts
For Military processed devices, please refer to the standard microcircuit drawing (SMD) available at www.dscc.dla.mil/programs/milspec/default.asp SMD Part Number 5962-8777101M3A 5962-8777101MCA ADI Equivalent OP400ATCMDA OP400AYMDA
(4.60
3.12 mm, 14.35 sq. mm) 8. OUT C 9. -IN C 10. +IN C 11. V12. +IND 13. -IN D 14. OUT D
1. OUT A 2. -IN A 3. +INA 4. V+ 5. +IN B 6. -IN B 7. OUT B
WAFER TEST LIMITS (@ V =
S
15 V, TA = 25 C, unless otherwise noted.)
Symbol VOS VOS IB AVO IVR CMR PSRR VO ISY Conditions VCM = 0 V VCM = 0 V VO = 10 V RL = 10 kW Rig 2 kW
*
Parameter Input Offset Voltage Input Offset Current Input Bias Current Large Signal Voltage Gain Input Voltage Range* Common Mode Rejection Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier
NOTE
VCM = 12 V VS = 3 V to 18 V RL = 10 kW RL = 2 kW No Load
OP400GBC Limit 230 2 6 3000 1500 12 115 3.2 12 725
Unit mA Max nA Max nA Max V/mV Min V Min dB Min mV/V Max V Min mA Max
*Guaranteed by CMR test. Electrical tests are performed at wafer probe to the limits shown Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed for standard product dice. Consult factory to negotiate specifications based on dice lot qualification through sample lot assembly and testing.
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the OP400 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
-4-
REV. A
Typical Performance Characteristics-OP400
TPC 1. Warm-Up Drift
TPC 2. Input Offset Voltage vs. Temperature
TPC 3. Input Bias Current vs. Temperature
TPC 4. Input Offset Current vs. Temperature
TPC 5. Input Bias Current vs. Common-Mode Voltage
TPC 6. Common-Mode Rejection vs. Frequency
TPC 7. Noise Voltage Density vs. Frequency
TPC 8. Current Noise Density vs. Frequency
TPC 9. 0.1 Hz to10 Hz Noise
REV. A
-5-
OP400
TPC 10. Total Supply Current vs. Supply Voltage
TPC 11. Total Supply Current vs. Temperature
TPC 12. Power Supply Rejection vs. Frequency
TPC 13. Power Supply Rejection vs. Temperature
TPC 14. Open-Loop Gain vs. Temperature
TPC 15. Open-Loop Gain and Phase Shift vs. Frequency
TPC 16. Closed-Loop Gain vs. Frequency
TPC 17. Maximum Output Swing Frequency
TPC 18. Total Harmonic Distortion vs. Frequency
-6-
REV. A
OP400
TPC 19. Overshoot vs. Capacitive Load
TPC 20. Short Circuit vs. Time
TPC 21. Channel Separation vs. Frequency
TPC 22. Large-Signal Transient Response
TPC 23. Small-Signal Transient Response
TPC 24. Small-Signal Transient Response CLOAD = 1nF
Figure 2. Noise Test Schematic
REV. A
-7-
OP400
Table I. Gain Bandwidth
Gain 5 10 100 1000
Bandwidth 150 kHz 67 kHz 7.5 kHz 500 Hz
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.
Figure 3. Burn-In Circuit
APPLICATIONS INFORMATION
The OP400 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 OP400. Total supply current can be reduced by connecting the inputs of an unused amplifier to -V. This turns the amplifier off, lowering the total supply current.
APPLICATIONS Dual Low-Power Instrumentation Amplifier
A dual instrumentation amplifier that consumes less than 33 mW of power per channel is shown in Figure 1. 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 (G = 1000). Offset voltage drift is typically 0.4 mV/C over the military temperature range which is comparable to the best monolithic instrumentation amplifiers. The bandwidth of the low-power instrumentation amplifier is a function of gain and is shown in Table I.
Figure 4. Dual Low-Power Instrumentation Amplifier
-8-
REV. A
OP400
Figure 5. Bipolar Current Transmitter
BIPOLAR CURRENT TRANSMITTER
In the circuit of Figure 5, which is an extension of the standard three op amp instrumentation amplifier, the output current is proportional to the differential input voltage. Maximum output current is 5 mA with voltage compliance equal to 10 V when using 15 V supplies. Output impedance of the current transmitter exceeds 3 MW and linearity is better than 16 bits with gain set for a full scale input of 100 mV.
DIFFERENTIAL OUTPUT INSTRUMENTATION AMPLIFIER
The output voltage swing of a single-ended instrumentation amplifier is limited by the supplies, normally at 15 V, to a maximum of 24 V p-p. The differential output instrumentation amplifier of Figure 6 can provide an output voltage swing of 48 V p-p when operated with 15 V supplies. The extended output swing is due to the opposite polarity of the outputs. Both outputs will swing 24 V p-p but with opposite polarity, for a total output voltage swing of 48 V p-p. The reference input can be used to set a common-mode output voltage over the range 10 V. PSRR of the amplifier is less than 1 mV/V with CMRR (G = 1000) better than 115 dB. Offset voltage drift is typically 0.4 mV/C over the military temperature range.
Figure 6. Differential Output Instrumentation Amplifier
REV. A
-9-
OP400
MULTIPLE OUTPUT TRACKING VOLTAGE REFERENCE
Figure 7 shows a circuit that provides outputs of 10 V, 7.5 V, 5 V, and 2.5 V for use as a system voltage reference. Maximum output current from each reference is 5 mA with load regulation
under 25 mV/mA. Line regulation is better than 15 mV/V and output voltage drift is under 20 mV/C. Output voltage noise from 0.1 Hz to 10 Hz is typically 75 mV p-p from the 10 V output and proportionately less from the 7.5 V, 5 V, and 2.5 V outputs.
Figure 7. Multiple-Output Tracking Voltage Reference
-10-
REV. A
OP400
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
14-Lead Hermetic DIP Package (Y-Suffix)
0.005 (0.13) MIN 0.098 (2.49) MAX
14 8 7
14-Lead Plastic DIP Package (P-Suffix)
0.795 (20.19) 0.725 (18.42)
14 1 8 7
PIN 1
1
0.310 (7.87) 0.220 (5.59) 0.320 (8.13) 0.290 (7.37) 0.060 (1.52) 0.015 (0.38)
0.280 (7.11) 0.240 (6.10) 0.325 (8.25) 0.300 (7.62) 0.195 (4.95) 0.115 (2.93) 0.015 (0.381) 0.008 (0.204)
0.100 (2.54) BSC 0.785 (19.94) MAX 0.200 (5.08) MAX 0.200 (5.08) 0.125 (3.18) 0.023 (0.58) 0.014 (0.36)
PIN 1
0.100 (2.54) BSC
0.150 (3.81) MIN 0.070 (1.78) SEATING 15 PLANE 0 0.030 (0.76)
0.015 (0.38) 0.008 (0.20)
0.210 (5.33) MAX 0.130 (3.30) 0.160 (4.06) MIN 0.115 (2.93) 0.022 (0.558) 0.070 (1.77) SEATING PLANE 0.014 (0.356) 0.045 (1.15)
0.060 (1.52) 0.015 (0.38)
16-Lead SOL Package (S-Suffix)
0.4133 (10.50) 0.3977 (10.00)
16 9
0.2992 (7.60) 0.2914 (7.40)
1 8
0.4193 (10.65) 0.3937 (10.00)
PIN 1
0.050 (1.27) BSC
0.1043 (2.65) 0.0926 (2.35)
0.0291 (0.74) 0.0098 (0.25)
45
0.0118 (0.30) 0.0040 (0.10)
8 0.0192 (0.49) SEATING 0 0.0125 (0.32) PLANE 0.0138 (0.35) 0.0091 (0.23)
0.0500 (1.27) 0.0157 (0.40)
Revision History
Location Data Sheet changed from REV. 0 to REV. A. Page
Edits to FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to PIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Edits to GENERAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 2 Edits to PACKAGE TYPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REV. A
-11-
-12-
C00304-0-4/02(A)
PRINTED IN U.S.A.

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