LT1782
Micropower, Over-The-Top
SOT-23, Rail-to-Rail
Input and Output Op Amp
FEATURES
s
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DESCRIPTIO
Operates with Inputs Above V
+
Rail-to-Rail Input and Output
Micropower: 55
µ
A Supply Current Max
Operating Temperature Range: – 40°C to 125°C
Low Profile (1mm) ThinSOT
TM
Package
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
Gain Bandwidth Product: 200kHz
Slew Rate: 0.07V/µs
The LT
®
1782 is a 200kHz 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 55µA of quiescent current and has reverse
battery protection, drawing negligible current for reverse
supply voltages up to 18V.
The input range of the LT1782 includes ground, and a
unique feature of this device is its Over-The-Top
TM
opera-
tion capability 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 LT1782 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
LT1782 op amp is available in the 5- and 6-lead
SOT-23 packages. For applications requiring higher speed,
refer to the LT1783.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT and Over-The-Top are trademarks of Linear Technology Corporation.
APPLICATIO S
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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 APPLICATIO
V
+
5V TO 18V
200Ω
5V
0.2Ω
200Ω
Distribution of Input Offset Voltage
25
V
S
= 5V, 0V
V
CM
= 2.5V
Positive Supply Rail Current Sense
PERCENTAGE OF AMPLIFIERS
20
15
+
LT1782
MMBT3904
V
OUT
= 2Ω(I
LOAD
)
0V TO 4.3V
2k
1782 TA01
10
–
5
LOAD
I
LOAD
0
–900
–600 –300
0
300
600
INPUT OFFSET VOLTAGE (µV)
U
900
1782 TA01a
U
U
1
LT1782
ABSOLUTE
AXI U
RATI GS
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)
LT1782C ............................................ – 40°C to 85°C
LT1782I ............................................. – 40°C to 85°C
LT1782H ......................................... – 40°C to 125°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
OUT 1
V
–
2
+IN 3
+ –
ORDER PART
NUMBER
TOP VIEW
5 V
+
4 –IN
LT1782CS5
LT1782IS5
LT1782HS5
S5 PART MARKING
LTLD
LTLE
LTXK
S5 PACKAGE
5-LEAD PLASTIC SOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/ W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The
q
denotes specifications which apply over the specified temperature range, otherwise specifications are 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.
SYMBOL PARAMETER
V
OS
Input Offset Voltage
CONDITIONS
T
A
= 25°C
0°C
≤
T
A
≤
70°C
–40°C
≤
T
A
≤
85°C
q
q
q
∆V
OS
/∆T Input Offset Voltage Drift (Note 7)
I
OS
I
B
Input Offset Current
V
CM
= 18V (Note 5)
Input Bias Current
V
CM
= 18 (Note 5)
SHDN or V
S
= 0V, V
CM
= 0V to 18V
Input Bias Current Drift
Input Noise Voltage
e
n
i
n
Input Noise Voltage Density
Input Noise Current Density
–40°C
≤
T
A
≤
85°C
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
2
U
U
W
W W
U
W
(Note 1)
Specified Temperature Range (Note 4)
LT1782C ............................................ – 40°C to 85°C
LT1782I ............................................. – 40°C to 85°C
LT1782H ......................................... – 40°C to 125°C
Junction Temperature........................................... 150°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER PART
NUMBER
OUT 1
V
–
2
+IN 3
+ –
+
6 V
5 SHDN
4 –IN
LT1782CS6
LT1782IS6
LT1782HS6
S6 PART MARKING
LTIS
LTIT
LTXL
S6 PACKAGE
6-LEAD PLASTIC SOT-23
T
JMAX
= 150°C,
θ
JA
= 230°C/ W
LT1782C/LT1782I
MIN
TYP
MAX
400
800
950
1100
5
2
1
15
12
UNITS
µV
µV
µV
µV/°C
nA
µA
nA
µA
nA
nA/°C
µV
P-P
nV/√Hz
pA/√Hz
2
0.7
8
6
0.1
0.01
1
50
0.05
q
q
q
q
q
LT1782
ELECTRICAL CHARACTERISTICS
The
q
denotes specifications which apply over the specified temperature range, otherwise specifications are 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.
SYMBOL PARAMETER
R
IN
Input Resistance
CONDITIONS
Differential
Common Mode, V
CM
= 0V to (V
CC
– 1V)
Common Mode, V
CM
= 0V to 18V
q
q
LT1782C/LT1782I
MIN
TYP
MAX
3.4
1.5
0
90
68
90
200
133
100
400
250
200
100
80
100
1500
6.5
5
3
5
q
UNITS
MΩ
GΩ
MΩ
pF
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
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
q
q
q
q
q
q
q
q
q
q
q
q
q
q
18
V
dB
dB
dB
V/mV
V/mV
V/mV
V/mV
V/mV
V/mV
1500
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
3
200
400
2.91
2.6
4.91
4.5
5
15
15
20
2.94
2.8
4.94
4.74
10
30
30
40
8
500
800
mV
mV
mV
V
V
V
V
mA
mA
mA
mA
V
V
V
OH
Output Voltage Swing HIGH
I
SC
Short-Circuit Current (Note 2)
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
Minimum Supply Voltage
Reverse Supply Voltage
I
S
Supply Current
(Note 6)
Supply Current, SHDN
I
SHDN
Shutdown Pin Current
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)
(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
q
q
q
q
q
q
q
q
q
q
q
q
2.7
18
40
55
60
65
15
8
1
30
0.3
2
100
6
110
100
90
200
µA
µA
µA
µA
nA
µA
µA
µA
µA
V
V
µs
µs
kHz
kHz
kHz
5
0.5
2
5
0.05
10
Shutdown Output Leakage Current
Maximum Shutdown Pin Current
V
L
V
H
t
ON
t
OFF
GBW
Shutdown Pin Input Low Voltage
Shutdown Pin Input High Voltage
Turn-On Time
Turn-Off Time
Gain Bandwidth Product
(Note 5)
q
q
3
LT1782
ELECTRICAL CHARACTERISTICS
The
q
denotes specifications which apply over the specified temperature range, otherwise specifications are 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.
SYMBOL PARAMETER
SR
Slew Rate
(Note 5)
Settling Time
Distortion
Full-Power Bandwidth (Note 9)
CONDITIONS
A
V
= –1, R
L
=
∞
0°C
≤
T
A
≤
70°C
–40°C
≤
T
A
≤
85°C
V
S
= 5V,
∆V
OUT
= 2V to 0.1%, A
V
= –1
V
S
= 3V, V
O
= 2V
P–P
, A
V
= 1, R
L
= 10k, f =1kHz
V
OUT
= 2V
P–P
q
q
LT1782C/LT1782I
MIN
TYP
MAX
0.035
0.031
0.028
0.07
UNITS
V/µs
V/µs
V/µs
µs
%
kHz
t
S
THD
FPBW
45
0.003
11
The
q
denotes specifications which apply over the specified temperature range, otherwise specifications are 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.
SYMBOL PARAMETER
V
OS
Input Offset Voltage
CONDITIONS
T
A
= 25°C
0°C
≤
T
A
≤
70°C
–40°C
≤
T
A
≤
85°C
q
q
q
q
q
q
LT1782C/LT1782I
MIN
TYP
MAX
500
900
1050
1200
5
2
15
UNITS
µV
µV
µV
µV/°C
nA
nA
nA/°C
µV
P-P
nV/√Hz
pA/√Hz
MΩ
MΩ
pF
∆V
OS
/∆T Input Offset Voltage Drift (Note 7)
I
OS
I
B
Input Offset Current
Input Bias Current
Input Bias Current Drift
Input Noise Voltage
e
n
i
n
R
IN
C
IN
CMRR
A
VOL
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
Input Capacitance
Input Voltage Range
Common Mode Rejection Ratio
Large-Signal Voltage Gain
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
0°C
≤
T
A
≤
70°C
–40°C
≤
T
A
≤
85°C
Supply Current, SHDN
I
SHDN
Shutdown Pin Current
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)
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
Differential
Common Mode, V
CM
= –5V to 13V
2
0.7
8
0.01
1
50
0.05
q
q
3.4
1.5
–5
68
55
40
30
6.5
3
5
13
80
150
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
V
dB
V/mV
V/mV
V/mV
V
OL
Output Voltage Swing LOW
– 4.997
– 4.8
– 4.6
4.91
4.6
4.5
18
15
90
4.94
4.8
4.74
30
100
45
– 4.992
– 4.5
– 4.2
V
V
V
V
V
V
mA
mA
dB
V
OH
Output Voltage Swing HIGH
I
SC
PSRR
I
S
Short-Circuit Current (Note 2)
Power Supply Rejection Ratio
Supply Current
60
65
70
20
8
µA
µA
µA
µA
nA
µA
6
0.5
2
4
LT1782
ELECTRICAL CHARACTERISTICS
The
q
denotes specifications which apply over the specified temperature range, otherwise specifications are 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.
SYMBOL PARAMETER
Maximum Shutdown Pin Current
Shutdown Output Leakage Current
V
L
V
H
t
ON
t
OFF
GBW
Shutdown Pin Input Low Voltage
Shutdown Pin Input High Voltage
Turn-On Time
Turn-Off Time
Gain Bandwidth Product
CONDITIONS
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
= 4V to 0.1%, A
V
= 1
V
OUT
= 8V
P–P
q
q
q
q
q
q
q
q
q
q
LT1782C/LT1782I
MIN
TYP
MAX
10
0.05
–3
100
6
120
110
100
0.0375
0.033
0.030
225
30
1
– 4.7
UNITS
µA
µA
V
V
µs
µs
kHz
kHz
kHz
V/µs
V/µs
V/µs
µs
kHz
SR
Slew Rate
0.075
t
S
FPBW
Settling Time
Full-Power Bandwidth (Note 9)
50
3
The
q
denotes 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 PARAMETER
V
OS
Input Offset Voltage
q
q
CONDITIONS
MIN
LT1782H
TYP
400
MAX
800
3
15
3
2
30
25
UNITS
µV
mV
µV/°C
nA
µA
nA
µA
V
dB
dB
∆V
OS
/∆T Input Offset Voltage Drift
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
q
q
q
q
q
q
q
q
0.3
76
60
200
50
400
80
1500
1500
18
V/mV
V/mV
V/mV
V/mV
15
900
1500
mV
mV
mV
V
V
V
V
dB
V
V
V
S
= 5V, V
O
= 500mV to 4.5V, R
L
= 10k
q
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
q
q
q
q
q
q
q
q
q
V
OH
Output Voltage Swing HIGH
2.85
2.20
4.85
3.80
80
2.7
18
PSRR
Power Supply Rejection Ratio
Minimum Supply Voltage
Reverse Supply Voltage
V
S
= 3V to 12.5V, V
CM
= V
O
= 1V
I
S
= – 100µA
q
5
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