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MXL1001AMJ8 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MXL1001AMJ8 Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 4 page Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 4 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1994 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. Precision Operational Amplifier OUTPUT INPUT 20k V- V+ MXL1001 1 2 3 4 6 7 8 Figure 1. Optional Offset Nulling Circuit __________Applications Information The MXL1001 series devices are pin-compatible with the OP-07, OP-05, 725, 108A or 101A amplifiers. The MXL1001 amplifiers can be used to upgrade older designs using these devices, with or without removal of external frequency compensation or nulling components. The MXL1001 can also be used in 741, LF156 or OP-15 applications provided the nulling circuitry is removed. The MXL1001 is specified over a wide supply voltage range from ±3V to ±18V. Operation with lower supplies is possible down to ±1.2V (two NiCd batteries), howev- er, at this level the device is stable only in closed-loop gains of +2 and above (or inverting gain of one or high- er). Unless proper care is exercised, thermocouple effects caused by temperature gradients across dissimi- lar metals at the input terminal connections, can exceed the inherent offset-voltage drift of the amplifier. Air cur- rents over the device leads should be minimized, pack- age leads should be short, and the two input leads should be as close together as possible and maintained at the same temperature. Offset-Voltage Adjustment The input offset voltage of the MXL1001, and its temper- ature drift, are minimized by zener-zap trimming at the wafer level. If further nulling of VOS is required, this can be performed using a 10k Ω or 20kΩ potentiometer with no degradation of VOS drift with temperature. Trimming to a value other than zero creates a drift of (VOS/300)µV/°C; i.e., if VOS is adjusted to 300µV, the change in drift will be 1µV/°C. The adjustment range with a 10k Ω or 20kΩ potentiometer is approximately ±2.5mV. If less adjustment range is needed, the sensi- tivity and resolution of the offset nulling can be improved by using a potentiometer of lower ohmic value in con- junction with fixed resistors. ___________________Chip Topography VOUT V- +IN 0.076" (1.93mm) 0.102" (2.59mm) VOS TRIM -IN VOS TRIM VOS TRIM V+ SUBSTRATE IS CONNECTED TO V- |
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