|Datasheet||Download AD648AH datasheet
|Cross ref.||Similar parts: LF147, LF147JAN, LF147QML, LF156JAN, LF256, LF347, LF347-N, LF347B, LF353, LF353-N|
FEATURES DC Performance 400 A max Quiescent Current 10 pA max Bias Current, Warmed 300 V max Offset Voltage V/ C max Drift 2 V p-p Noise, Hz AC Performance V/ s Slew Rate 1 MHz Unity Gain Bandwidth Available in Plastic Mini-DIP, Cerdip, Plastic SOIC and Hermetic Metal Can 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
The 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. The C grade reduces offset voltage to less than 0.30 mV and offset voltage drift to less than 3 µV/°C. This level of dc precision is achieved utilizing 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 additional 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 (86 dB, min on the "C" 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 to +70°C. The AD648A, AD648B and AD648C are rated over the industrial temperature range to +85°C. REV. C
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.
The AD648S and AD648T are rated over the military temperature range to +125°C and are available processed to MIL-STD-883B, Rev. C. The AD648 is available an 8-pin plastic mini-DIP, cerdip, SOIC, TO-99 metal can, or in chip form.
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 85%. 3. Guaranteed low input offset voltage (2 mV max) and drift (20 µV/°C max) for the AD648J are achieved utilizing 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, for the C grade matching is within 0.4 mV. 6. Crosstalk between amplifiers is less than at 1 kHz. 7. The AD648 is available in chip form.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703
Model Min INPUT OFFSET VOLTAGE 1 Initial Offset TMIN to TMAX vs. Temperature vs. Supply vs. Supply, T MIN to TMAX Long-Term Offset Stability INPUT BIAS CURRENT Either Input, 2 VCM = 0 Either Input 2 at TMAX, VCM = 0 Max Input Bias Current Over Common-Mode Voltage Range Offset Current, = 0 Offset Current at T MAX MATCHING CHARACTERISTICS 3 Input Offset Voltage Input Offset Voltage T MIN to T MAX 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 10 V TMIN to TMAX VCM 11 V TMIN to TMAX INPUT VOLTAGE NOISE Voltage = 1 kHz = 10 kHz INPUT CURRENT NOISE = 1 kHz FREQUENCY RESPONSE Unity Gain, Small Signal Full Power Response Slew Rate, Unity Gain Settling Time ± 0.01% OPEN-LOOP GAIN 10 k TMIN to TMAX, 10 V, TMIN to TMAX, 5 k OUTPUT CHARACTERISTICS Voltage 10 k, TMIN to TMAX Voltage k, TMIN to TMAX Short Circuit Current POWER SUPPLY Rated Performance Operating Range Quiescent Current (Both Amplifiers) TEMPERATURE RANGE Operating, Rated Performance Commercial to +70 °C) Industrial to +85°C) Military to +125°C) PACKAGE OPTIONS SOIC (R-8) Plastic (N-8) Cerdip (Q-8) Metal Can (H-08A) Tape and Reel Chips Available 0.8 1.0
NOTES 1 Input Offset Voltage specifications are guaranteed after 5 minutes of operation +25°C. 2 Bias Current specifications are guaranteed maximum at either input after 5 minutes of operation = +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. Specifications subject to change without notice.
Supply Voltage. 18 V Internal Power 500 mW Input 18 V Output Short Circuit Duration. Indefinite Differential Input Voltage. +VS and VS Storage Temperature Range (Q, H). to +150°C Storage Temperature Range (N, R). to +125°C Operating Temperature Range 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: 165°C/Watt 8-Pin Cerdip Package: 110°C/Watt 8-Pin Metal Package: 150°C/Watt 8-Pin SOIC Package: 160°C/Watt 3 For supply voltages less than 18 V, the absolute maximum input voltage is equal to the supply voltage.Contact factory for latest dimensions. Dimensions shown in inches and (mm).
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high 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.
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