MXL1001 查看數據表（PDF） - Maxim Integrated
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MXL1001 Datasheet PDF : 4 Pages
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Precision Operational Amplifier
__________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 10kΩ 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 10kΩ 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.
INPUT
1
20k
2
8
7
MXL1001 6
3
4
V-
Figure 1. Optional Offset Nulling Circuit
V+
OUTPUT
___________________Chip Topography
VOS TRIM VOS TRIM
V+
VOUT
0.076"
(1.93mm)
V-
VOS TRIM -IN
+IN
0.102"
(2.59mm)
SUBSTRATE IS CONNECTED TO V-
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.
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