Datasheet

10
LT1995
1995fb
UU
U
PI FU CTIO S
P1 (Pin 1): Noninverting Gain-of-1 Input. Connects a 4k
internal resistor to the op amp’s noninverting input.
P2 (Pin 2): Noninverting Gain-of-2 Input. Connects a 2k
internal resistor to the op amp’s noninverting input.
P4 (Pin 3): Noninverting Gain-of-4 Input. Connects a 1k
internal resistor to the op amp’s noninverting input.
V
S
–
(Pin 4): Negative Supply Voltage.
REF (Pin 5): Reference Voltage. Sets the output level when
the difference between the inputs is zero. Connects a 4k
internal resistor to the op amp’s non inverting input.
OUT (Pin 6): Output Voltage. V
OUT
= V
REF
+ 1 • (V
P1
– V
M1
)
+ 2 • (V
P2
– V
M2
) + 4 • (V
P4
– V
M4
).
V
S
+
(Pin 7): Positive Supply Voltage.
M4 (Pin 8): Inverting Gain-of-4 Input. Connects a 1k
internal resistor to the op amp’s inverting input.
M2 (Pin 9): Inverting Gain-of-2 Input. Connects a 2k
internal resistor to the op amp’s inverting input.
M1 (Pin 10): Inverting Gain-of-1 Input. Connects a 4k
internal resistor to the op amp’s inverting input.
(Difference Amplifier Configuration)