LT1369CS View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1369CS' PDF : 20 Pages View PDF
LT1366/LT1367
LT1368/LT1369
Typical Performance Characteristics
(The data presented here applies to the LT1366/LT1367/LT1368/LT1369 unless otherwise noted.)
THD + Noise vs Frequency
1
VS = ±1.5V
VIN = 2VP-P
RL = 10k
0.1
Large-Signal Response
(LT1366/LT1367)
0V
Small-Signal Response
(LT1366/LT1367)
0.01
0.001
0.01
AV = 1
AV = –1
0.1
1
FREQUENCY (kHz)
10
LT1366 TPC28
VS = ±15V
UNITY GAIN
100µs/DIV
LT1366 TPC29
VS = ±15V
UNITY GAIN
2µs/DIV
LT1366 TPC30
Applications information
Rail-to-Rail Operation
The LT1366 family differs from conventional op amps in the
design of both the input and output stages. Figure 1 shows
a simplified schematic of the amplifier. The input stage
consists of two differential amplifiers, a PNP stage Q1/Q2
and an NPN stage Q3/Q4, which are active over different
V+
portions of the input common mode range. Lateral devices
are used in both input stages, eliminating the need for
clamps across the input pins. Each input stage is trimmed
for offset voltage. A complementary output configuration
(Q23 through Q26) is employed to create an output stage
with rail-to-rail swing. The amplifier is fabricated on Linear
IN+
IN–
Q12
V+
– 300mV
V–
I1
Q5
Q10
Q11
D4
D5
V–
Q16
Q3 Q4
Q6
V–
D1
Q1 Q2
D3
V+
D2
Q7
Q8 Q9
CC
Q14 Q15
Q13
D7
V+
Q18
Figure 1. LT1366 Simplified Schematic Diagram
D6
Q17
Q21
V–
V+
Q20
Q22
Q19
D7
Q24
Q23
V–
C1
OUT
C2
V+
Q25
Q26
D8
LT1366 FO1
1366fb
11
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