LT1078I Linear Technology, LT1078I Datasheet - Page 10

• Manufacturer Part Number: LT1078I
• Description: Micropower/ Dual and Quad/ Single Supply/ Precision Op Amps
• Manufacturer: Linear Technology

LT1078/LT1079
TYPICAL PERFORMANCE CHARACTERISTICS
APPLICATIONS
10
The LT1078/LT1079 devices are fully specified with
V
conditions appears to be the most representative for
battery-powered micropower circuits. Offset voltage is
internally trimmed to a minimum value at these supply
voltages. When 9V or 3V batteries or 2.5V dual supplies
to a common mode voltage change of 2.4V or a V
change of 7 V if CMRR = 110dB (3 V/V).
are used, bias and offset current changes will be minimal.
Offset voltage changes will be just a few microvolts as
given by the PSRR and CMRR specifications. For example,
if PSRR = 114dB (= 2 V/V), at 9V the offset voltage change
will be 8 V. Similarly, V
+
= 5V, V
–
Small-Signal Transient Response
V
A
C
INPUT 50mV TO 150mV
= 0V, V
V
L
S
= 1
= 15pF
= 5V, 0V
U
CM
S
INFORMATION
= 2.5V, V
U
= 0.1V. This set of operating
10 s/DIV
W
U
W
CM
LT1078/79 • TPC24
= 0V is equivalent
Small-Signal Transient Response
V
A
C
V
L
S
0.1V
= 1
= 15pF
= 15V
U
OS
10 s/DIV
A full set of specifications is also provided at 15V supply
voltages for comparison with other devices and for com-
pleteness.
Single Supply Operation
The LT1078/LT1079 are fully specified for single supply
operation, i.e., when the negative supply is 0V. Input
common mode range goes below ground and the output
swings within a few millivolts of ground while sinking
current. All competing micropower op amps either cannot
swing to within 600mV of ground (OP-20, OP-220, OP-420)
or need a pull-down resistor connected to the output to swing
to ground (OP-90, OP-290, OP-490, HA5141/42/44). This
LT1078/79 • TPC26
0V
Small-Signal Transient Response
V
A
C
V
L
S
= 1
= 15pF
= 2.5V
10 s/DIV
LT1078/79 • TPC25
0V