Datasheet

LT1783
12
1783fd
SIMPLIFIED SCHEMATIC
Gain
The open-loop gain is almost independent of load when
the output is sourcing current. This optimizes performance
in single supply applications where the load is returned to
ground. The typical performance curve of open-loop gain
for various loads shows the details.
Shutdown
The 6-lead part includes a shutdown feature that disables
the part, reducing quiescent current and making the output
high impedance. The part can be shut down by bringing
the SHDN pin 1.2V or more above V
–
. When shut down,
the supply current is about 5μA and the output leakage
current is less than 1μA (V
–
≤ V
OUT
≤ V
+
). In normal opera-
tion, the SHDN pin can be tied to V
–
or left fl oating. See
the Typical Performance Characteristics curves, “Supply
Current vs Shutdown Voltage.”
Q10
D5
Q9
Q1
Q7
R2
1k
R3
1k
R4
8k
Q8
Q5
–IN
+IN
Q11 Q12
D4
Q2
D1
Q6
Q13 Q14
R1
6k
R5
8k
Q4
Q15
Q19
D3
Q3
Q16 Q18
Q22
V
+
Q17 Q20
Q21
OUT
V
–
1783 SS
SHDN
10μA
+
Q23 Q24Q25
Q26
J1
APPLICATIONS INFORMATION