LT1078 Linear Technology, LT1078 Datasheet - Page 12

• Manufacturer Part Number: LT1078
• Description: Micropower/ Dual and Quad/ Single Supply/ Precision Op Amps
• Manufacturer: Linear Technology

APPLICATIONS
Comparator Applications
The single supply operation of the LT1078/LT1079 and its
ability to swing close to ground while sinking current
LT1078/LT1079
Table 1
PARAMETER
V
Temperature Coefficient V
Average Noninverting I
Match of Noninverting I
CMRR Match
PSRR Match
12
Matching Specifications
In many applications the performance of a system de-
pends on the matching between two op amps, rather than
the individual characteristics of the two devices. The two
and three op amp instrumentation amplifier configura-
tions shown in this data sheet are examples. Matching
characteristics are not 100% tested on the LT1078/LT1079.
OS
Match, V
OS
–100
4
2
0
0
V
Figure 3. Comparator Rise Response
Time to 10mV, 5mV, 2mV Overdrives
S
B
B
= 5V, 0V
U
LT1078
LT1079
OS
INFORMATION
U
LT1078AC/LT1079AC/LT1078AM/LT1079AM
200 s/DIV
50% YIELD
0.12
120
117
0.5
30
40
W
6
LT2078/79 • F03
U
98% YIELD
110
150
100
105
1.2
0.4
8
Some specifications are guaranteed by definition. For
example, 70 V maximum offset voltage implies that mis-
match cannot be more than 140 V. 97dB (= 14 V/V)
CMRR means that worst-case CMRR match is 91dB
(= 28 V/V). However, Table 1 can be used to estimate the
expected matching performance at V
the two sides of the LT1078, and between amplifiers A and
D, and between amplifiers B and C of the LT1079.
lends itself to use as a precision comparator with TTL
compatible output.
LT1078C/LT1079C/LT1078M/LT1079M
50% YIELD
100
4
2
0
0
0.15
117
117
0.6
50
50
6
V
Figure 4. Comparator Fall Response
Time to 10mV, 5mV, 2mV Overdrives
S
= 5V, 0V
200 s/DIV
98% YIELD
190
250
102
1.8
0.5
10
97
S
= 5V, 0V between
LT2078/79 • F04
UNITS
V/ C
nA
dB
dB
nA
V
V