LT1178S8 Datasheet, PDF (1/2 Pages) Linear Technology – 20uA Max, Dual SO-8 Package, Single Supply Precision Op Amp

LT1178S8
20µA Max, Dual
SO-8 Package, Single Supply
Precision Op Amp
FEATURES
s _{8-Pin SO Package}
s _{20µA Max Supply Current per Amplifier}
s _{180µV Max Offset Voltage}
s _{350pA Max Offset Current}
s _{0.9µVP-P, 0.1Hz to 10Hz Voltage Noise}
s _{1.5pAP-P, 0.1Hz to 10Hz Current Noise}
s _{0.6µV/°C Offset Voltage Drift}
s _{Single Supply Operation:}
– Input Voltage Range Includes Ground
– Output Swings to Ground While Sinking Current
– No Pull-Down Resistors Are Needed
s _{Output Sources and Sinks 5mA Load Current}
PACKAGE/ORDER I FOR ATIO
+IN A 1
V^– 2
+IN B ₃
–IN B ₄
TOP VIEW
8 –IN A
7 OUT A
6 V⁺
5 OUT B
S8 PACKAGE
8-LEAD PLASTIC SOIC
T_JMAX = 150°C, θ_JA = 200°C/ W
ORDER PART
NUMBER
LT1178S8
PART MARKING
1178
Please note that the LT1178S8 surface mount pinout differs from that of
the LT1178 standard plastic or ceramic dual-in-line packages.
Consult factory for Industrial and Military grade parts.
DESCRIPTIO
The LT1178S8 is a micropower dual op amp in the surface
mount 8-pin package. It is optimized for single supply
operation at 5V. Specifications are also provided at ±15V
supplies.
The extremely low supply current is combined with true
precision specifications: offset voltage is 60µV, offset
current is 50pA. Both offset parameters have low drift with
temperature. The 1.5pA_P-P current noise and picoampere
offset current permit the use of megohm level source
resistors without introducing serious errors. Voltage noise
at 0.9µV_P-P is remarkably low considering the low supply
current.
The LT1178S8 can be operated from a single supply as low
as one lithium cell or two Ni-Cad batteries. The input range
goes below ground. The all-NPN output stage swings to
within a few millivolts of ground while sinking current ––
no power consuming pull-down resistors are needed.
For applications where three times higher supply current
is acceptable, the micropower LT1077 single, LT1078
dual and LT1079 quad are recommended. The LT1077/
LT1078/LT1079 have significantly higher bandwidth, slew
rate; lower voltage noise and better output drive capability.
ELECTRICAL CHARACTERISTICS
For electrical specifications not listed below, refer to the standard LT1178C data sheet with the changes noted on this page.
SYMBOL PARAMETER
V_OS
Input Offset Voltage
∆V_OS
∆T
Input Offset Voltage Drift (Note 1)
CONDITIONS
V_S = 5V, 0V
V_S = 5V, 0V
V_S = ±15V
V_S = ±15V
V_S = 5V, 0V
V_S = ±15V
T_A = 25°C
0°C ≤ T_A ≤ 70°C
T_A = 25°C
0°C ≤ T_A ≤ 70°C
0°C ≤ T_A ≤ 70°C
0°C ≤ T_A ≤ 70°C
MIN
TYP
MAX
60
180
85
350
120
350
150
540
0.6
3.5
0.7
3.8
Note 1: Not 100% production tested.
UNITS
µV
µV
µV
µV
µV/°C
µV/°C
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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