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Details, datasheet, quote on part number:AD704JN
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| Part: | AD704JN |
| Category: | Analog & Mixed-Signal Processing => Amplifiers => Operational Amplifiers => Precision => Quad |
| Description: | Quad Picoampere Input Current Bipolar op Amp |
| Company: | Analog Devices |
| Datasheet: | Download AD704JN datasheet File size : 408 kB |
| Request For quote: | Find where to buy AD704JN
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Datasheet text preview:
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FEATURES High DC Precision 75 V max Offset Voltage 1 V/ C max Offset Voltage Drift 150 pA max Input Bias Current 0.2 pA/ C typical IB Drift Low Noise 0.5 V p-p typical Noise, 0.1 Hz to 10 Hz Low Power 600 A max Supply Current per Amplifier Chips & MIL-STD-883B Processing Available Available in Tape and Reel in Accordance with EIA-481A Standard Single Version: AD705, Dual Version: AD706 PRIMARY APPLICATIONS Industrial/Process Controls Weigh Scales ECG/EKG Instrumentation Low Frequency Active Filters
Quad Picoampere Input Current Bipolar Op Amp AD704
CONNECTION DIAGRAMS 14-Pin Plastic DIP (N) 14-Pin Cerdip (Q) Packages
OUTPUT IN + IN +VS + IN IN OUTPUT 1 2 3 4 5 6 7 2 3 1 4 14 13 12 OUTPUT IN + IN V S + IN IN OUTPUT
OUTPUT IN + IN +V S + IN IN OUTPUT NC 1 2 3 4 5 6 7 8 NC = NO CONNECT 2 3 1 4
16-Pin SOIC (R) Package
16 15 14 OUTPUT IN + IN V S + IN IN OUTPUT NC
AD704
(TOP VIEW)
11 10 9 8
AD704
(TOP VIEW)
13 12 11 10 9
(E) Package 20-Terminal LCC
OUT1 OUT4 IN1 NC IN4
3
2
1
20
19
PRODUCT DESCRIPTION
The AD704 is a quad, low power bipolar op amp that has the low input bias current of a BiFET amplifier but which offers a significantly lower IB drift over temperature. It utilizes Superbeta bipolar input transistors to achieve picoampere input bias current levels (similar to FET input amplifiers at room temperature), while its IB typically only increases by 5× at +125°C (unlike a BiFET amp, for which IB doubles every 10°C resulting in a 1000× increase at +125°C). Furthermore the AD704 achieves 75 µV offset voltage and low noise characteristics of a precision bipolar input op amp.
100
+IN1 4 NC 5 +VS 6 NC 7 +IN2 8 AMP 1 AMP 4
18 +IN4 17 NC 16 VS 15 NC 14 +IN3
AD704
AMP 2 AMP 3
9
IN2
10
OUT2
11
NC
12
OUT3
13
IN3
NC = NO CONNECT
10
TYPICAL I B nA
TYPICAL JFET AMP 1
Since it has only 1/20 the input bias current of an AD OP07, the AD704 does not require the commonly used "balancing" resistor. Furthermore, the current noise is 1/5 that of the AD OP07 which makes the AD704 usable with much higher source impedances. At 1/6 the supply current (per amplifier) of the AD OP07, the AD704 is better suited for today's higher density circuit boards and battery powered applications. The AD704 is an excellent choice for use in low frequency active filters in 12- and 14-bit data acquisition systems, in precision instrumentation, and as a high quality integrator. The AD704 is internally compensated for unity gain and is available in five performance grades. The AD704J and AD704K are rated over the commercial temperature range of 0°C to +70°C. The AD704A and AD704B are rated over the industrial temperature of 40°C to +85°C. The AD704T is rated over the military temperature range of 55°C to +125°C and is available processed to MIL-STD-883B, Rev. C.
0.1
AD704T
0.01 55 +25 TEMPERATURE °C +125
Figure 1. Input Bias Current Over Temperature
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 which 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: 617/329-4700 Fax: 617/326-8703
AD704SPECIFICATIONS (@ T = +25 C, V
A
CM
= 0 V, and
15 V dc, unless otherwise noted)
AD704K/B Min Typ Max 30 50 0.2 132 126 0.3 80 0.2 75 150 1.0 112 108 150 200 200 300 30 0.4 80 80 100 150 200 300 130 200 300 400 110 104 110 106 104 104 110 106 150 150 50 0.4 80 100 Min AD704T Typ Max 30 80 132 126 0.3 80 1.0 600 700 150 200 400 500 150 250 400 600 200 250 100 150 1.0 Units µV µV µV/°C dB dB µV/month pA pA p A / °C pA pA pA pA p A / °C pA pA µV µV pA pA dB dB dB dB dB
Model Conditions INPUT OFFSET VOLTAGE Initial Offset Offset vs. Temp, Average TC vs. Supply (PSRR) TMIN TMAX Long Term Stability INPUT BIAS CURRENT 1 vs. Temp, Average TC TMIN TMAX TMIN TMAX INPUT OFFSET CURRENT vs. Temp, Average TC TMIN TMAX TMIN TMAX MATCHING CHARACTERISTICS Offset Voltage TMIN TMAX Input Bias Current2 TMIN TMAX Common-Mode Rejection 3 TMIN TMAX Power Supply Rejection 4 Crosstalk 5 FREQUENCY RESPONSE UNITY GAIN Crossover Frequency Slew Rate, Unity Gain Slew Rate INPUT IMPEDANCE Differential Common-Mode INPUT VOLTAGE RANGE Common-Mode Voltage Common-Mode Rejection Ratio INPUT CURRENT NOISE INPUT VOLTAGE NOISE TMIN TMAX f = 10 Hz RLOAD = 2 k
AD704J/A Min Typ Max 50 100 0.2 132 126 0.3 100 0.3 150 250 1.5
TMIN TMAX 100 VS = ± 2 to ± 18 V VS = ± 2.5 to ± 18 V 100 V CM = 0 V V CM = ± 1 3 . 5 V V CM = 0 V V CM = ± 1 3 . 5 V V CM = 0 V V CM = ± 1 3 . 5 V V CM = 0 V V CM = ± 1 3 . 5 V
112 108 270 300 300 400
80 0.6 100 100
250 300 300 400 250 400 500 600
94 94 94 94 150
G = 1 TMIN TMAX
0.8 0.15 0.1 40 2 300 2 ± 13.5 ± 14 100 132 98 128 3 50 0.5 17 15 200 150 200 150 2000 1500 1000 1000
0.8 0.15 0.1 40 2 300 2 ± 13.5 ± 14 114 132 108 128 3 50 0.5 17 15 400 300 300 200 2000 1500 1000 1000 2.0 22 400 300 200 100
0.8 0.15 0.1 40 2 300 2 ± 13.5 ± 14 110 132 108 128 3 50 0.5 17 15 2000 1500 1000 1000 2.0 22
MHz V/µs V/µs M pF G pF V dB dB pA p-p fA/ Hz µV p-p nV/ Hz nV/ Hz V/mV V/mV V/mV V/mV
V CM = ± 1 3 . 5 V TMIN TMAX 0.1 to 10 Hz f = 10 Hz 0.1 to 10 Hz f = 10 Hz f = 1 kHz V O = ± 12 V RLOAD = 10 k TMIN TMAX V O = ± 10 V RLOAD = 2 k TMIN TMAX
22
OPEN-LOOP GAIN
2
REV. A
AD704
Model Conditions OUTPUT CHARACTERISTICS Voltage Swing Current CAPACITIVE LOAD Drive Capability POWER SUPPLY Rated Performance Operating Range Quiescent Current TMIN TMAX TRANSISTOR COUNT # of Transistors RLOAD = 10 k TMIN TMAX Short Circuit Gain = + 1 AD704J/A Min Typ Max AD704K/B Min Typ Max Min AD704T Typ Max Units
± 13
± 14 ± 15 10,000 ± 15 1.5 1.6 180
± 13
± 14 ± 15 10,000 ± 15 1.5 1.6 180
± 13
± 14 ± 15 10,000 ± 15 1.5 1.6 180
V mA pF V V mA mA
± 2.0
± 18 2.4 2.6
± 2.0
± 18 2.4 2.6
± 2.0
± 18 2.4 2.6
NOTES 1 Bias current specifications are guaranteed maximum at either input. 2 Input bias current match is the maximum difference between corresponding inputs of all four amplifiers. 3 CMRR match is the difference of VOS/VCM between any two amplifiers, expressed in dB. 4 PSRR match is the difference between VOS/VSUPPLY for any two amplifiers, expressed in dB. 5 See Figure 2a for test circuit. All min and max specifications are guaranteed. Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS 1
METALIZATION PHOTOGRAPH
Dimensions shown in inches and (mm). Contact factory for latest dimensions.
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V Internal Power Dissipation (+25°C) . . . . . . . . . . . See Note 2 Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± VS Differential Input Voltage3 . . . . . . . . . . . . . . . . . . . . . . . ± 0.7 V Output Short Circuit Duration (Single Input) . . . . . Indefinite Storage Temperature Range (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to +150°C (N, R) . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to +125°C Operating Temperature Range AD704J/K . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C AD704A/B . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C AD704T . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to +125°C Lead Temperature Range (Soldering 10 seconds) . . . . +300°C
NOTES 1 Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2 Specification is for device in free air: 14-Pin Plastic Package: JA = 150°C/Watt 14-Pin Cerdip Package: JA = 110°C/Watt 16-Pin SOIC Package: JA = 100°C/Watt 20-Terminal LCC Package: JA = 150°C/Watt 3 The input pins of this amplifier are protected by back-to-back diodes. If the differential voltage exceeds ± 0.7 volts, external series protection resistors should be added to limit the input current to less than 25 mA.
9k 1k
80 AMP4 100
CROSSTALK dB
AMP2 AMP3 120
IN P U T * SIGNAL 1k
1/4 AD704
OUTPUT +VS 2 .5 k 0.1 µF COM 0.1 µF VS 1µF 1µF
AD704 P IN 4
140
AD704 P IN 11
160 10 100 1k FREQUENCY Hz 10k 100k
A L L 4 AMPLIFIERS ARE CONNECTED AS SHOWN INPUT (SUCH THAT AMPLIFIER'S OUTPUT IS AT MAX *THE SIGNAL WITHOUT CLIPPING THESLEW LIMITING) IS APPLIED TO ONE AMPLITUDE OR AMPLIFIER AT A TIME. THE OUTPUTS OF THE OTHER THREE AMPLIFIERS ARE THEN MEASURED FOR CROSSTALK.
Figure 2b. Crosstalk vs. Frequency
Figure 2a. Crosstalk Test Circuit
REV. A
3
AD704Typical Characteristics (@ +25 C, V =
S
15 V, unless otherwise noted)
ORDERING GUIDE
Model AD704JN AD704JR AD704JR-/REEL AD704KN AD704AN AD704AQ AD704AR AD704AR-REEL AD704BQ AD704SE/883B AD704TQ AD704TQ/883B
Temperature Range 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 40°C to +85°C 40°C to +85°C 40°C to +85°C 40°C to +85°C 40°C to +85°C 55°C to +125°C 55°C to +125°C 55°C to +125°C
Package Option* N-14 R-16 Tape and Reel N-14 N-14 Q-14 R-16 Tape and Reel Q-14 E-20A Q-14 Q-14
Chips are also available. * E = Leadless Ceramic Chip Carrier; N = Plastic DIP; Q = Cerdip; R = Small Outline (SOIC).
50
50
50
PERCENTAGE OF UNITS
PERCENTAGE OF UNITS
30
30
PERCENTAGE OF UNITS 80 +160
40
40
40
30
20
20
20
10
10
10
0 80 40 0 +40 +80 INPUT OFFSET VOLTAGE µV
0 160 0 +80 INPUT BIAS CURRENT pA
0 120 60 0 +60 +120 INPUT OFFSET CURRENT pA
Figure 3. Typical Distribution of Input Offset Voltage
Figure 4. Typical Distribution of Input Bias Current
Figure 5. Typical Distribution of Input Offset Current
INPUT COMMON-MODE VOLTAGE LIMIT Volts (REFERRED TO SUPPLY VOLTAGES)
+V S 0.5 1.0 1.5
35 30 25 20 15 10 5 0
100
OFFSET VOLTAGE DRIFT µV/°C
OUTPUT VOLTAGE Volts p-p
SOURCE RESISTANCE MAY BE EITHER BALANCED OR UNBALANCED 10
+1.5 +1.0 +0.5 VS 0 5 10 15 20 SUPPLY VOLTAGE Volts
1.0
0.1
1k
10k 100k FREQUENCY Hz
1M
1k
10k
100k
1M
10M
100M
SOURCE RESISTANCE
Figure 6. Input Common-Mode Voltage Range vs. Supply Voltage
Figure 7. Large Signal Frequency Response
Figure 8. Offset Voltage Drift vs. Source Resistance
4
REV. A
AD704
50
CHANGE IN OFFSET VOLTAGE µV 4
120
100
3
INPUT BIAS CURRENT pA
PERCENTAGE OF UNITS
40
80 POSITIVE I B 60
30
2
20
40 NEGATIVE I B 20
1
10
0 0.8 0.4 0 +0.4 +0.8 INPUT OFFSET VOLTAGE DRIFT µV/°C
0 0 1 2 3 4 5 WARM-UP TIME Minutes
0 15
10
5
0
5
10
15
COMMON MODE VOLTAGE Volts
Figure 9. Typical Distribution of Offset Voltage Drift
Figure 10. Change in Input Offset Voltage vs. Warm-Up Time
Figure 11. Input Bias Current vs. Common-Mode Voltage
1000
1000
VOLTAGE NOISE nV/ Hz
CURRENT NOISE fA/
100
Hz 100
10
10
100 20M
10k
VOUT
1 1 10 100 FREQUENCY Hz 1000
1 1 10 100 1000 FREQUENCY Hz
Figure 12. Input Noise Voltage Spectral Density
Figure 13. Input Noise Current Spectral Density
Figure 14. 0.1 Hz to 10 Hz Noise Voltage
500
+160 +140
180 160 V S = ±15V T A = +25°C
QUIESCENT CURRENT µA
450
FIGURE 15
CMR dB
+120 VS = ± 15V +100 +80 +60 +40
140 120 100 PSR 80 +PSR 60 40
400
+125°C +25°C
350 55°C 300 0 5 10 15 20
+20 0 0.1
PSR dB
1 10 100 1k 10k FREQUENCY Hz 100k 1M
20 0.1
1
10
SUPPLY VOLTAGE ±Volts
100 1k 10k FREQUENCY Hz
100k 1M
Figure 15. Quiescent Supply Current vs. Supply Voltage (per Amplifier)
Figure 16. Common-Mode Rejection vs. Frequency
Figure 17. Power Supply Rejection vs. Frequency
REV. A
5
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