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Part: AD648S
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Operational Amplifiers
Description:
Company: Analog Devices
Datasheet: Download AD648S datasheet File size : 954 kB
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FEATURES DC Performance 400 A max Quiescent Current 10 pA max Bias Current, Warmed Up (AD648B) 1 V max Offset Voltage (AD648B) 10 V/ C max Drift (AD648B) 2 V p-p Noise, 0.1 Hz to 10 Hz AC Performance 1.8 V/ s Slew Rate 1 MHz Unity Gain Bandwidth Available in Plastic Mini-DIP, CERDIP, and Plastic SOIC Packages MIL-STD-883B Parts Available Surface Mount (SOIC) Package Available in Tape and Reel in Accordance with EIA-481A Standard Single Version: AD548 PRODUCT DESCRIPTION
Dual Precision, Low Power BiFET Op Amp AD648
CONNECTION DIAGRAM Plastic Mini-Dip (N) Package, Plastic SOIC (R) Package and CERDIP (Q) Package
The AD648 is a matched pair of low power, precision monolithic operational amplifiers. It offers both low bias current (10 pA max, warmed up) and low quiescent current (400 µA max) and is fabricated with ion-implanted FET and laser wafer trimming technologies. Input bias current is guaranteed over the AD648's entire common-mode voltage range. The economical J grade has a maximum guaranteed offset voltage of less than 2 mV and an offset voltage drift of less than 20 µV/°C. This level of dc precision is achieved using Analog's laser wafer drift trimming process. The combination of low quiescent current and low offset voltage drift minimizes changes in input offset voltage due to self-heating effects. Five grades are offered over the commercial, industrial and military temperature ranges. The AD648 is recommended for any dual supply op amp application requiring low power and excellent dc and ac performance. In applications such as battery-powered, precision instrument front ends and CMOS DAC buffers, the AD648's excellent combination of low input offset voltage and drift, low bias current, and low 1/f noise reduces output errors. High common-mode rejection (82 dB, min on the "B" grade) and high open-loop gain ensures better than 12-bit linearity in high impedance, buffer applications. The AD648 is pinned out in a standard dual op amp configuration and is available in seven performance grades. The AD648J and AD648K are rated over the commercial temperature range of 0°C to 70°C. The AD648 and AD648B are rated over the industrial temperature range of 40°C to +85°C. The AD648S and AD648T are rated over the military temperature range of
55°C to +125°C and the AD648T* grade is available processed to MIL-STD-883B, Rev. C. The AD648 is available in an 8-lead plastic mini-DIP, CERDIP, and SOIC. *Not for new design, obsolete April 2002.
PRODUCT HIGHLIGHTS
1. A combination of low supply current, excellent dc and ac performance and low drift makes the AD648 the ideal op amp for high performance, low power applications. 2. The AD648 is pin compatible with industry standard dual op amps such as the LF442, TL062, and AD642, enabling designers to improve performance while achieving a reduction in power dissipation of up to 85%. 3. Guaranteed low input offset voltage (2 mV max) and drift (20 µV/°C max) for the AD648J are achieved using Analog Devices' laser drift trimming technology. 4. Analog Devices specifies each device in the warmed-up condition, insuring that the device will meet its published specifications in actual use. 5. Matching characteristics are excellent for all grades. The input offset voltage matching between amplifiers in the AD648J is within 2 mV. 6. Crosstalk between amplifiers is less than 120 dB at 1 kHz.
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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 © Analog Devices, Inc., 2002
AD648SPECIFICATIONS (@ + 25 C and V =
S
15 V dc, unless otherwise noted.)
Min AD648K/B/T Typ Max 0.3 1.0 1.5/1.5/2.0 10 Unit
Model INPUT OFFSET VOLTAGE1 Initial Offset TMIN to TMAX vs. Temperature vs. Supply vs. Supply, TMIN to TMAX Long-Term Offset Stability INPUT BIAS CURREN Either Input,2 VCM = 0 Either Input2 at TMAX, VCM = 0 Max Input Bias Current Over Common-Mode Voltage Range Offset Current, VCM = 0 Offset Current at TMAX MATCHING CHARACTERISTICS3 Input Offset Voltage Input Offset Voltage TMIN to TMAX Input Offset Voltage vs. Temperature Input Bias Current Crosstalk INPUT IMPEDANCE Differential Common Mode INPUT VOLTAGE RANGE Differential 4 Common Mode Common-Mode Rejection VCM = ± 1 0 V TMIN to TMAX VCM = ± 1 1 V TMIN to TMAX INPUT VOLTAGE NOISE Voltage 0.1 Hz to 10 Hz f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz INPUT CURRENT NOISE f = 1 kHz FREQUENCY RESPONSE Unity Gain, Small Signal Full Power Response Slew Rate, Unity Gain Settling Time to ± 0.01% OPEN-LOOP GAIN VO = ± 10 V, RL 10 k TMIN to TMAX, RL 10 k VO = ± 10 V, RL 5 k TMIN to TMAX, RL 5 k
Min
AD648J/A/S Typ 0.75
Max 2.0 3.0/3.0/3.0 20
80 76/76/76 15 5 20 0.45/1.3/20 30 10 0.25/0.7/10 2.0 3.0/3.0/3.0 10 120 1 × 101 2 3 3 × 1012 3 ± 20 ± 12
86 80 15 3 10 0.25/0.65/10 15 5 0.15/0.35/5 1.0 1.5/1.5/2.0 5 120 1 × 1012 3 3 × 1012 3 ± 20 ± 12
mV µV/°C dB dB µV/month pA nA pA pA nA mV mV µV/°C pA dB pF pF V V dB dB dB dB
5
2
1.0 8
0.5 5
± 11 76 76/76/76 70 70/70/70
± 11 82 82 76 76
2 80 40 30 30 1.8 0.8 1.0 1.0 30 1.8 8 1000 700 500 300 0.8 1.0
2 80 40 30 30 1.8 1.0 30 1.8 8 1000 700 500 300
µV p-p nV/ Hz nV/ Hz nV/ Hz nV/ Hz fA/ Hz MHz kHz V/µs µs V/mV V/mV V/mV V/mV
300 300/300/300 150 150/150/150
300 300 150 150
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AD648
SPECIFICATIONS (Continued)
Model Min AD648J/A/S Typ Max Min AD648K/B/T Typ Max Unit
OUTPUT CHARACTERISTICS Voltage @ RL 10 k, TMIN to TMAX Voltage @ RL 5 k, TMIN to TMAX Short Circuit Current POWER SUPPLY Rated Performance Operating Range Quiescent Current (Both Amplifiers) TEMPERATURE RANGE Operating, Rated Performance Commercial (0°C to 70°C) Industrial (40°C to +85°C) Military (55°C to +125°C) PACKAGE OPTIONS SOIC (R-8) Plastic (N-8) CERDIP (Q-8) Tape and Reel
± 12/± 12/± 12 ± 11/± 11/± 11 15 ± 15 340
± 13 ± 12
± 12 ± 11 15 ± 15 340
± 13 ± 12
V V mA V V µA
± 4.5
± 18 400
± 4.5
± 18 400
AD648J AD648A AD648S
AD648K AD648B AD648T
AD648JR AD648KR AD648JN AD648KN AD648BQ5, AD648TQ/883B5 AD648AQ5, AD648SQ5 AD648JR-REEL, AD648JR-REEL7 AD648KR-REEL, AD648KR-REEL7
NOTES 1 Input Offset Voltage specifications are guaranteed after five minutes of operation at T A = 25°C. 2 Bias Current specifications are guaranteed maximum at either input after five minutes of operation at T A = 25°C. For higher temperature, the current doubles every 10°C. 3 Matching is defined as the difference between parameters of the two amplifiers. 4 Defined as voltages between inputs, such that neither exceeds ± 10 V from ground. 5 Not for new design. Obsolete April 2002. Specifications subject to change without notice.
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AD648
ABSOLUTE MAXIMUM RATINGS 1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .± 18 V Internal Power Dissipation2 . . . . . . . . . . . . . . . . . . . . 500 mW Input Voltage3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V Output Short Circuit Duration . . . . . . . . . . . . . . . . . Indefinite Differential Input Voltage . . . . . . . . . . . . . . . . . . +VS and VS Storage Temperature Range (Q, H) . . . . . . . 65°C to +150°C Storage Temperature Range (N, R) . . . . . . . . 65°C to +125°C Operating Temperature Range AD648J/K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C AD648A/B . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C AD648S/T . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to +125°C Lead Temperature Range (Soldering 60 sec) . . . . . . . . . 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 Thermal Characteristics: 8-Pin Plastic Package: JA = 165°C/Watt 8-Pin CERDIP Package: JC = 22°C/Watt; JA = 110°C/Watt 8-Pin SOIC Package: JC = 42°C/Wat; JA = 160°C/Watt 3 For supply voltages less than ± 18 V, the absolute maximum input voltage is equal to the supply voltage.
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 AD648 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
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Typical Performance Characteristics-- AD648
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