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PDF LT1367 Data sheet ( Hoja de datos )
| Número de pieza | LT1367 | |
| Descripción | Dual and Quad Precision Rail-to-Rail Input and Output Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1366/LT1367
LT1368/LT1369
Dual and Quad Precision
Rail-to-Rail Input and Output
Op Amps
FEATURES
s Input Common Mode Range Includes Both Rails
s Output Swings Rail-to-Rail
s Low Input Offset Voltage: 150µV
s High Common Mode Rejection Ratio: 90dB
s High AVOL: >1V/µV Driving 10kΩ Load
s Low Input Bias Current: 10nA
s Wide Supply Range: 1.8V to ±15V
s Low Supply Current: 375µA per Amplifier
s High Output Drive: 30mA
s 400kHz Gain-Bandwidth Product
s Slew Rate: 0.13V/µs
s Stable for Capacitive Loads up to 1000pF
U
APPLICATIONS
s Rail-to-Rail Buffer Amplifiers
s Low Voltage Signal Processing
s Supply Current Sensing at Either Rail
s Driving A/D Converters
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTION
The LT®1366/LT1367/LT1368/LT1369 are dual and quad
bipolar op amps which combine rail-to-rail input and
output operation with precision specifications. These op
amps maintain their characteristics over a supply range of
1.8V to 36V. Operation is specified for 3V, 5V and ±15V
supplies. Input offset voltage is typically 150µV, with an
open-loop gain AVOL of 1 million while driving a 10k load.
Common mode rejection is typically 90dB over the full rail-
to-rail input range, and supply rejection is 110dB.
The LT1366/LT1367 have conventional compensation
which assures stability for capacitive loads of 1000pF or
less. The LT1368/LT1369 have compensation that
requires a 0.1µF output capacitor, which improves the
amplifier’s supply rejection and reduces output imped-
ance at high frequencies. The output capacitor’s filtering
action reduces high frequency noise, which is beneficial
when driving A/D converters.
The LT1366/LT1368 are available in plastic 8-pin PDIP and
8-lead SO packages with the standard dual op amp pinout.
The LT1367/LT1369 feature the standard quad pinout,
which is available in a plastic 14-lead SO package. These
devices can be used as plug-in replacements for many
standard op amps to improve input/output range and
precision.
TYPICAL APPLICATION
VCC R1
200Ω
Positive Supply Rail Current Sense
Rs
0.2Ω
ILOAD
LOAD
–
1/2 LT1366
+
R2
20k
Q1
TP0610L
–
1/2 LT1366
+
( )VO = ILOAD • RS
R2
R1
= ILOAD • 20Ω
1366 TA01
Output Saturation Voltage vs Load Current
1000
POSITIVE
100 RAIL
NEGATIVE
RAIL
10
1
0.001
0.01 0.1
1
LOAD CURRENT (mA)
10
1366 TA02
1
1 page  
ELECTRICAL CHARACTERISTICS
0°C < TA < 70°C, VS = 3V, 0V, VCM = 1.5V, VO = 1.5V, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
VOS
∆VOS
VOS TC
IB
∆IB
IOS
∆IOS
AVOL
CMRR
VOL
VOH
ISC
IS
Input Offset Voltage (LT1366/LT1368)
Input Offset Voltage (LT1367/LT1369)
Input Offset Voltage Shift (LT1366/LT1368)
Input Offset Voltage Match (Channel to Channel)
Input Offset Voltage Shift (LT1367/LT1369)
Input Offset Voltage Match (Channel to Channel)
Input Offset Voltage Drift
VCM = VCC
VCM = VEE
VCM = VCC
VCM = VEE
VCM = VEE to VCC
VCM = VEE, VCC (Notes 3, 4)
VCM = VEE to VCC
VCM = VEE, VCC (Notes 3, 4)
(Note 2)
Input Bias Current
Input Bias Current Shift
Input Offset Current
Input Offset Current Shift
Input Bias Current Match (Channel to Channel)
Large-Signal Voltage Gain
Common Mode Rejection Ratio (LT1366/LT1368)
CMRR Match (Channel to Channel)
Common Mode Rejection Ratio (LT1367 /LT1369)
CMRR Match (Channel to Channel)
Output Voltage Swing LOW
Output Voltage Swing HIGH
Short-Circuit Current
VCM = VCC
VCM = VEE
VCM = VEE to VCC
VCM = VCC
VCM = VEE
VCM = VEE to VCC
VCM = VCC (Note 3)
VCM = VEE (Note 3)
VO = 50mV to 2.8V, RL = 10k
VCM = VEE to VCC
VCM = VEE to VCC (Note 3)
VCM = VEE to VCC
VCM = VEE to VCC (Note 3)
No Load
ISINK = 0.5mA
ISINK = 2.5mA
No Load
ISOURCE = 0.5mA
ISOURCE = 2.5mA
(Note 1)
Supply Current per Amplifier
LT1366/LT1367
LT1368/LT1369
MIN TYP
q 200
q 200
q 200
q 200
q 200
q 250
q 200
q 250
q2
q0
q –45
15
–10
q 25
q2
q1
q2
q0
q0
2
1
q 150
1500
q 76
q 70
83
83
q 72
q 66
83
83
q9
q 45
q 120
q VCC – 0.014 VCC – 0.005
q VCC – 0.110 VCC – 0.055
q VCC – 0.300 VCC – 0.180
q ±10
q 375
MAX
575
575
950
900
425
900
675
1900
6
45
0
90
15
15
15
15
15
14
80
230
520
UNITS
µV
µV
µV
µV
µV
µV
µV
µV
µV/°C
nA
nA
nA
nA
nA
nA
nA
nA
V/mV
dB
dB
dB
dB
mV
mV
mV
V
V
V
mA
µA
5
5 Page 
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
V+
different 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 fabri-
IN+
IN –
Q12
V+
– 300mV
V–
I1
Q5
Q10
Q11
V–
D4 D5
Q16
Q3 Q4
Q6
V–
D1
Q1 Q2
D3
V+
D2
Q7
Q8 Q9
CC
Q14 Q15
V+
Q13
D7
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
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LT1367.PDF ] | |
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