FEATURES
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LT1783
1.25MHz, Over-The-Top
Micropower, Rail-to-Rail Input
and Output Op Amp in SOT-23
DESCRIPTION
The LT
®
1783 is a 1.25MHz op amp available in the small
SOT-23 package that operates on all single and split supplies
with a total voltage of 2.5V to 18V. The amplifier draws less
than 300μA of quiescent current and has reverse-battery
protection, drawing negligible current for reverse supply
voltages up to 18V.
The input range of the LT1783 includes ground, and a
unique feature of this device is its Over-The-Top
®
opera-
tion capabilitity with either or both of its inputs above the
positive rail. The inputs handle 18V both differential and
common mode, independent of supply voltage. The input
stage incorporates phase reversal protection to prevent
false outputs from occurring even when the inputs are 9V
below the negative supply.
The LT1783 can drive loads up to 18mA and still maintain
rail-to-rail capability. A shutdown feature on the 6-lead
version can disable the part, making the output high
impedance and reducing quiescent current to 5μA. The
LT1783 op amp is available in the 5- and 6-lead SOT-23
packages. For applications requiring lower power, refer
to the LT1782.
L,
LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered
trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology
Corporation. All other trademarks are the property of their respective owners.
Operates with Inputs Above V
+
Rail-to-Rail Input and Output
Micropower: 300μA Supply Current Max
Operating Temperature Range: –40°C to 125°C
Gain Bandwidth Product: 1.25MHz
Slew Rate: 0.42V/μs
Low Input Offset Voltage: 800μV Max
Single Supply Input Range: 0V to 18V
High Output Current: 18mA Min
Specified on 3V, 5V and ±5V Supplies
Output Shutdown on 6-Lead Version
Reverse-Battery Protection to 18V
High Voltage Gain: 1500V/mV
Low Profile (1mm) ThinSOT™ Package
APPLICATIONS
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Portable Instrumentation
Battery- or Solar-Powered Systems
Sensor Conditioning
Supply Current Sensing
Battery Monitoring
MUX Amplifiers
4mA to 20mA Transmitters
TYPICAL APPLICATION
Positive Supply Rail Current Sense
V
+
5V TO 18V
PERCENTAGE OF AMPLIFIERS
200Ω
5V
0.2Ω
200Ω
25
Distribution of Input Offset Voltage
V
S
= 5V, 0V
V
CM
= 2.5V
20
+
LT1783
2N3904
V
OUT
= 2Ω(I
LOAD
)
0V TO 4.3V
2k
1783 TA01
15
–
10
LOAD
I
LOAD
5
0
–900
–600 –300
0
300
600
INPUT OFFSET VOLTAGE (μV)
900
1783fd
1783 TA01b
1
LT1783
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V
+
to V
–
) ................................ 18V
Input Differential Voltage.......................................... 18V
Input Pin Voltage to V
–
............................... +24V/–10V
Shutdown Pin Voltage Above V
–
............................. 18V
Shutdown Pin Current ........................................ ±10mA
Output Short-Circuit Duration (Note 2) ........... Indefinite
Operating Temperature Range (Note 3)
LT1783C ............................................. –40°C to 85°C
LT1783I .............................................. –40°C to 85°C
LT1783H ........................................... –40°C to 125°C
Specified Temperature Range (Note 4)
LT1783C ............................................. –40°C to 85°C
LT1783I .............................................. –40°C to 85°C
LT1783H ........................................... –40°C to 125°C
Junction Temperature ......................................... 150°C
Storage Temperature Range.................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................. 300°C
PIN CONFIGURATION
TOP VIEW
OUT 1
V
–
2
+IN 3
+ –
TOP VIEW
5
V
+
OUT 1
V
–
2
4
–IN
+IN 3
+ –
+
6
V
5
SHDN
4
–IN
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/W
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 230°C/W
ORDER INFORMATION
TAPE AND REEL (MINI)
LT1783CS5#TRMPBF
LT1783IS5#TRMPBF
LT1783HS5#TRMPBF
LT1783CS6#TRMPBF
LT1783IS6#TRMPBF
LT1783HS6#TRMPBF
TAPE AND REEL
LT1783CS5#TRPBF
LT1783IS5#TRPBF
LT1783HS5#TRPBF
LT1783CS6#TRPBF
LT1783IS6#TRPBF
LT1783HS6#TRPBF
PART MARKING
LTLF
LTLG
LTXR
LTIU
LTIV
LTXS
PACKAGE DESCRIPTION
5-Lead Plastic SOT-23
5-Lead Plastic SOT-23
5-Lead Plastic SOT-23
6-Lead Plastic SOT-23
6-Lead Plastic SOT-23
6-Lead Plastic SOT-23
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
1783fd
2
LT1783
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
The
l
denotes the specifications which apply over the specified
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 3V, 0V; V
S
= 5V, 0V; V
CM
= V
OUT
= half supply, for the 6-lead part
V
PIN5
= 0V, pulse power tested unless otherwise specified. (Note 4)
CONDITIONS
T
A
= 25°C
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
l
l
l
l
l
l
LT1783C/LT1783I
MIN
TYP
MAX
400
800
950
1100
5
8
7
80
60
UNITS
μV
μV
μV
μV/°C
nA
μA
nA
μA
nA
nA/°C
μV
P-P
nV/√Hz
pA/√Hz
MΩ
GΩ
MΩ
pF
V
dB
dB
dB
V/mV
V/mV
V/mV
V/mV
V/mV
V/mV
mV
mV
mV
V
V
V
V
mA
mA
mA
mA
V
V
μA
μA
μA
μA
nA
μA
μA
μA
μA
1783fd
I
OS
I
B
Input Offset Voltage Drift (Note 9)
Input Offset Current
V
CM
= 18V (Note 5)
Input Bias Current
V
CM
= 18V (Note 5)
SHDN or V
S
= 0V, V
CM
= 0V to 18V
Input Bias Current Drift
Input Noise Voltage
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
Differential
Common Mode, V
CM
= 0V to (V
CC
– 1V)
Common Mode, V
CM
= 0V to 18V
2
4
45
35
0.1
0.06
0.6
20
0.14
1.3
1
0.5
5
100
80
100
1500
e
n
i
n
R
IN
l
l
l
0.65
0.3
0
90
68
90
200
133
100
400
250
200
C
IN
CMRR
PSRR
A
VOL
Input Capacitance
Input Voltage Range
Common Mode Rejection Ratio
(Note 5)
Power Supply Rejection Ratio
Large-Signal Voltage Gain
18
V
OL
Output Voltage Swing LOW
V
OH
Output Voltage Swing HIGH
I
SC
Short-Circuit Current (Note 2)
V
CM
= 0V to V
CC
– 1V
V
CM
= 0V to 18V (Note 8)
V
S
= 3V to 12.5V, V
CM
= V
O
= 1V
V
S
= 3V, V
O
= 500mV to 2.5V, R
L
= 10k
V
S
= 3V, 0°C ≤ T
A
≤ 70°C
V
S
= 3V, –40°C ≤ T
A
≤ 85°C
V
S
= 5V, V
O
= 500mV to 4.5V, R
L
= 10k
V
S
= 5V, 0°C ≤ T
A
≤ 70°C
V
S
= 5V, –40°C ≤ T
A
≤ 85°C
No Load
I
SINK
= 5mA
V
S
= 5V, I
SINK
= 10mA
V
S
= 3V, No Load
V
S
= 3V, I
SOURCE
= 5mA
V
S
= 5V, No Load
V
S
= 5V, I
SOURCE
= 10mA
V
S
= 3V, Short to GND
V
S
= 3V, Short to V
CC
V
S
= 5V, Short to GND
V
S
= 5V, Short to V
CC
I
S
= –100μA
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
V
PIN5
= 2V, No Load (Note 10)
V
PIN5
= 0.3V, No Load (Note 10)
V
PIN5
= 2V, No Load (Note 10)
V
PIN5
= 5V, No Load (Note 10)
V
PIN5
= 2V, No Load (Note 10)
V
PIN5
= 18V, No Load (Note 10)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
1500
2.91
2.6
4.91
4.5
5
15
15
20
18
I
S
Minimum Supply Voltage
Reverse Supply Voltage
Supply Current
(Note 6)
Supply Current, SHDN
Shutdown Pin Current
l
l
l
l
l
l
l
l
l
3
200
330
2.94
2.8
4.94
4.74
10
30
30
40
2.5
210
8
400
600
2.7
300
350
375
18
8
1
30
I
SHDN
Shutdown Output Leakage Current
Maximum Shutdown Pin Current
5
0.5
2
5
0.05
10
3
LT1783
ELECTRICAL CHARACTERISTICS
SYMBOL
V
L
V
H
t
ON
t
OFF
GBW
PARAMETER
Shutdown Pin Input Low Voltage
Shutdown Pin Input High Voltage
Turn-On Time
Turn-Off Time
Gain Bandwidth Product
(Note 5)
Slew Rate
(Note 7)
Full-Power Bandwidth (Note 11)
Settling Time
Distortion
The
l
denotes the specifications which apply over the specified
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 3V, 0V; V
S
= 5V, 0V; V
CM
= V
OUT
= half supply, for the 6-lead part
V
PIN5
= 0V, pulse power tested unless otherwise specified. (Note 4)
CONDITIONS
(Note 10)
(Note 10)
V
PIN5
= 5V to 0V, R
L
= 10k (Note 10)
V
PIN5
= 0V to 5V, R
L
= 10k (Note 10)
f = 5kHz
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
A
V
= –1, R
L
=
∞
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
V
OUT
= 2V
P-P
V
S
= 5V,
ΔV
OUT
= 2V to 0.1%, A
V
= –1
V
S
= 3V, V
O
= 2V
P-P
, A
V
= 1, R
L
= 10k, f = 1kHz
l
l
LT1783C/LT1783I
MIN
TYP
MAX
0.3
2
25
3
1250
UNITS
V
V
μs
μs
kHz
kHz
kHz
V/μs
V/μs
V/μs
kHz
μs
%
l
l
l
l
SR
750
600
550
0.24
0.21
0.19
0.42
FPBW
t
S
THD
66
12
0.001
The
l
denotes the specifications which apply over the specified temperature range, otherwise specifications are at T
A
= 25°C.
V
S
= ±5V, V
CM
= 0V, V
OUT
= 0V, for the 6-lead part V
PIN5
= V
–
, pulse power tested unless otherwise specified. (Note 4)
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
T
A
= 25°C
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
l
l
l
l
LT1783C/LT1783I
MIN
TYP
MAX
500
900
1050
1200
5
8
80
UNITS
μV
μV
μV
μV/°C
nA
nA
nA/°C
μV
P-P
nV/√Hz
pA/√Hz
MΩ
MΩ
pF
V
dB
V/mV
V/mV
V/mV
V
V
V
V
V
V
mA
mA
dB
I
OS
I
B
e
n
i
n
R
IN
C
IN
CMRR
A
VOL
Input Offset Voltage Drift (Note 9)
Input Offset Current
Input Bias Current
Input Bias Current Drift
Input Noise Voltage
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
Input Capacitance
Input Voltage Range
Common Mode Rejection Ratio
Large-Signal Voltage Gain
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
Differential
Common Mode, V
CM
= –5V to 13V
l
l
l
0.65
0.3
–5
68
70
50
40
2
4
40
0.06
1
20
0.14
1.3
0.5
5
80
160
13
V
OL
Output Voltage Swing LOW
V
OH
Output Voltage Swing HIGH
I
SC
PSRR
Short-Circuit Current (Note 2)
Power Supply Rejection Ratio
V
CM
= –5V to 13V
V
O
= ±4V, R
L
= 10k
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
No Load
I
SINK
= 5mA
I
SINK
= 10mA
No Load
I
SOURCE
= 5mA
I
SOURCE
= 10mA
Short to GND
0°C ≤ T
A
≤ 70°C
V
S
= ±1.5V to ±9V
l
l
l
l
l
l
l
l
l
l
l
4.91
4.6
4.5
18
15
90
–4.997
–4.8
–4.67
4.94
4.8
4.74
30
100
–4.992
–4.6
–4.4
1783fd
4
LT1783
ELECTRICAL CHARACTERISTICS
SYMBOL
I
S
PARAMETER
Supply Current
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
V
PIN5
= –3V, V
S
= ±5V, No Load (Note 10)
V
PIN5
= –4.7V, V
S
= ±5V, No Load (Note 10)
V
PIN5
= –3V, V
S
= ±5V, No Load (Note 10)
V
PIN5
= 9V, V
S
= ±9V (Note 10)
V
PIN5
= –7V, V
S
= ±9V, No Load (Note 10)
V
S
= ±5V (Note 10)
V
S
= ±5V (Note 10)
V
PIN5
= 0V to –5V, R
L
= 10k (Note 10)
V
PIN5
= –5V to 0V, R
L
= 10k (Note 10)
f = 5kHz
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
A
V
= –1, R
L
=
∞,
V
O
= ±4V, Measured at V
O
= ±2V
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
V
OUT
= 8V
P-P
ΔV
OUT
= 4V to 0.1%, A
V
= 1
The
l
denotes the specifications which apply over the specified
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= ±5V, V
CM
= 0V, V
OUT
= 0V, for the 6-lead part V
PIN5
= V
–
,
pulse power tested unless otherwise specified. (Note 4)
CONDITIONS
l
l
l
l
l
l
l
l
l
l
l
l
l
l
LT1783C/LT1783I
MIN
TYP
MAX
230
325
375
400
20
8
30
1
–4.7
UNITS
μA
μA
μA
μA
nA
μA
μA
μA
V
V
μs
μs
kHz
kHz
kHz
V/μs
V/μs
V/μs
kHz
μs
I
SHDN
Supply Current, SHDN
Shutdown Pin Current
Maximum Shutdown Pin Current
Shutdown Output Leakage Current
Shutdown Pin Input Low Voltage
Shutdown Pin Input High Voltage
Turn-On Time
Turn-Off Time
Gain Bandwidth Product
6
0.5
2
10
0.05
–2.8
25
3
1300
V
L
V
H
t
ON
t
OFF
GBW
SR
Slew Rate
800
700
625
0.26
0.23
0.21
0.45
FPBW
t
S
Full-Power Bandwidth (Note 11)
Settling Time
18
10
The
l
denotes the specifications which apply over the full operating temperature range of –40°C ≤ T
A
≤ 125°C. V
S
= 3V, 0V; V
S
= 5V, 0V;
V
CM
= V
OUT
= half supply, for the 6-lead part V
PIN5
= 0V, pulse power tested unless otherwise specified. (Note 4)
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift (Note 9)
I
OS
I
B
Input Offset Current
V
CM
= 18V (Note 5)
Input Bias Current
V
CM
= 18V (Note 5)
Input Voltage Range
CMRR
A
VOL
Common Mode Rejection Ratio
Large-Signal Voltage Gain
V
CM
= 0.3V to V
CC
– 1V
V
CM
= 0.3V to 18V
V
S
= 3V, V
O
= 500mV to 2.5V, R
L
= 10k
V
S
= 5V, V
O
= 500mV to 4.5V, R
L
= 10k
V
OL
Output Voltage Swing LOW
No Load
I
SINK
= 5mA
V
S
= 5V, I
SINK
= 10mA
V
S
= 3V, No Load
V
S
= 3V, I
SOURCE
= 5mA
V
S
= 5V, No Load
V
S
= 5V, I
SOURCE
= 10mA
PSRR
Power Supply Rejection Ratio
V
S
= 3V to 12.5V, V
CM
= V
O
= 1V
CONDITIONS
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
LT1783H
TYP
400
MAX
850
3
15
15
10
150
150
UNITS
μV
mV
μV/°C
nA
μA
nA
μA
V
dB
dB
0.3
76
60
200
50
400
100
1500
1500
18
V/mV
V/mV
V/mV
V/mV
15
800
1200
mV
mV
mV
V
V
V
V
dB
1783fd
V
OH
Output Voltage Swing HIGH
2.85
2.30
4.85
4
80
5
单片机
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