LT1636
Over-The-Top
Micropower Rail-to-Rail
Input and Output Op Amp
FEATURES
■
■
■
■
■
■
■
■
■
■
■
■
■
■
DESCRIPTIO
Rail-to-Rail Input and Output
Micropower: 50µA I
Q
, 44V Supply
Operating Temperature Range: – 40°C to 125°C
Over-The-Top
®
: Input Common Mode Range
Extends 44V Above V
EE
, Independent of V
CC
Low Input Offset Voltage: 225µV Max
Specified on 3V, 5V and
±15V
Supplies
High Output Current: 18mA
Output Shutdown
Output Drives 10,000pF with Output Compensation
Reverse Battery Protection to 27V
High Voltage Gain: 2000V/mV
High CMRR: 110dB
220kHz Gain-Bandwidth Product
8-Lead DFN, MSOP, PDIP and SO Packages
APPLICATIO S
■
■
■
■
■
Battery- or Solar-Powered Systems
Portable Instrumentation
Sensor Conditioning
Supply Current Sensing
Battery Monitoring
MUX Amplifiers
4mA to 20mA Transmitters
The LT
®
1636 op amp operates on all single and split supplies
with a total voltage of 2.7V to 44V drawing less than 50µA of
quiescent current. The LT1636 can be shut down, making the
output high impedance and reducing the quiescent current to
4µA. The LT1636 has a unique input stage that operates and
remains high impedance when above the positive supply. The
inputs take 44V both differential and common mode, even
when operating on a 3V supply. The output swings to both
supplies. Unlike most micropower op amps, the LT1636 can
drive heavy loads; its rail-to-rail output drives 18mA. The
LT1636 is unity-gain stable into all capacitive loads up to
10,000pF when a 0.22µF and 150Ω compensation network
is used.
The LT1636 is reverse supply protected: it draws no current
for reverse supply up to 27V. Built-in resistors protect the
inputs for faults below the negative supply up to 22V. There
is no phase reversal of the output for inputs 5V below V
EE
or
44V above V
EE
, independent of V
CC
.
The LT1636 op amp is available in the 8-pin MSOP, PDIP and
SO packages. For space limited applications the LT1636 is
available in a 3mm
×
3mm
×
0.8mm dual fine pitch leadless
package (DFN).
Over-The-Top is a registered trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
Input Bias Current vs Common Mode Voltage
Over-The-Top Current Source with Shutdown
INPUT BIAS CURRENT (nA)
5000
3000
V
S
= 5V, 0V
4V TO
44V
R*
LT1004-1.2
1M
R
1000
40
30
20
10
0
–10
4.0
4.4
4.8
5.2 10 20 30 40 50
COMMON MODE VOLTAGE (V)
1636 G03
+
LT1636
TPO610
I
OUT
= 1.2
R
e.g., 10mA = 120Ω
1636 TA01
T
A
= – 55°C
T
A
= 125°C
T
A
= 25°C
–
I
OUT
SHDN
*OPTIONAL FOR LOW OUTPUT CURRENTS
U
1636fc
U
U
1
LT1636
ABSOLUTE
MAXIMUM
RATINGS
Total Supply Voltage (V
+
to V
–
) .............................. 44V
Input Differential Voltage ......................................... 44V
Input Current ......................................................
±25mA
Shutdown Pin Voltage Above V
–
............................. 32V
Shutdown Pin Current .......................................
±10mA
Output Short-Circuit Duration (Note 2) ......... Continuous
Operating Temperature Range (Note 3)
LT1636C/LT1636I .............................. – 40°C to 85°C
LT1636H .......................................... – 40°C to 125°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
NULL 1
–IN 2
+IN 3
V
–
8
7
6
5
NULL
V
+
OUT
SHDN
NULL
–IN
+IN
V
–
1
2
3
4
4
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 160°C/W (NOTE 2)
UNDERSIDE METAL CONNECTED TO V
–
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 250°C/W
ORDER PART
NUMBER
LT1636CDD
LT1636IDD
DD PART*
MARKING
LAAJ
ORDER PART
NUMBER
LT1636CMS8
LT1636IMS8
*The temperature grades are identified by a label on the shipping container. Consult factory for parts specified with wider operating temperature ranges.
3V A D 5V ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
N8 Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
S8 Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
MS8 Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
The
●
denotes the specifications which apply over the full operating temperature range of –40°C
≤
T
A
≤
85°C.
V
S
= 3V, 0V; V
S
= 5V, 0V; V
CM
= V
OUT
= half supply unless otherwise specified. (Note 4)
LT1636C/LT1636I
MIN
TYP
MAX
50
225
400
550
50
225
600
750
50
225
700
1050
UNITS
µV
µV
µV
µV
µV
µV
µV
µV
µV
1636fc
2
U
U
W
W W
U
W
(Note 1)
Specified Temperature Range (Note 4)
LT1636C/LT1636I .............................. – 40°C to 85°C
LT1636H .......................................... – 40°C to 125°C
Junction Temperature ........................................... 150°C
Junction Temperature (DD Package) ................... 125°C
Storage Temperature Range ................. – 65°C to 150°C
Storage Temperature Range
(DD Package) ....................................... – 65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
TOP VIEW
8
7
6
5
NULL
V
+
OUT
SHDN
NULL 1
–IN 2
+IN 3
V
–
8
7
6
5
NULL
V
+
OUT
SHDN
4
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 150°C/W (N8)
T
JMAX
= 150°C,
θ
JA
= 190°C/W (S8)
MS8 PART*
MARKING
LTCL
ORDER PART
NUMBER
LT1636CN8
LT1636CS8
LT1636IN8
LT1636IS8
LT1636HS8
S8 PART*
MARKING
1636
1636I
1636H
U
●
●
●
●
●
●
LT1636
3V A D 5V ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
The
●
denotes the specifications which apply over the full operating temperature range of –40°C
≤
T
A
≤
85°C.
V
S
= 3V, 0V; V
S
= 5V, 0V; V
CM
= V
OUT
= half supply unless otherwise specified. (Note 4)
CONDITIONS
DD Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
N8 Package, – 40°C
≤
T
A
≤
85°C
S8 Package, – 40°C
≤
T
A
≤
85°C
MS8 Package, – 40°C
≤
T
A
≤
85°C
DD Package, – 40°C
≤
T
A
≤
85°C
V
CM
= 44V (Note 5)
LT1636C/LT1636I
MIN
TYP
MAX
75
425
900
1050
1
5
2
8
2
10
2
10
0.1
0.8
0.6
5
8
3
6
0.1
0.7
52
0.035
6
10
7
15
4
0
44
84
110
86
98
200
1300
133
100
400
2000
250
200
2
10
480
875
860
1600
2.95
2.985
2.55
2.8
4.95
4.985
4.30
4.75
7
15
20
42
12
25
25
50
90
103
27
40
42
55
60
4
12
0.5
15
1.1
5
0.05
1
27
150
120
2.5
UNITS
µV
µV
µV
µV/°C
µV/°C
µV/°C
µV/°C
nA
µA
nA
µA
nA
µV
P-P
nV/√Hz
pA/√Hz
MΩ
MΩ
pF
V
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
dB
V
µA
µA
µA
nA
µA
µA
µA
µs
µs
1636fc
I
OS
I
B
e
n
i
n
R
IN
C
IN
CMRR
A
VOL
V
OL
V
OH
I
SC
PSRR
I
S
I
SD
t
ON
t
OFF
U
●
●
●
●
●
●
●
●
●
●
Input Offset Voltage Drift (Note 9)
Input Offset Current
Input Bias Current
V
CM
= 44V (Note 5)
V
S
= 0V
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
Differential
Common Mode, V
CM
= 0V to 44V
Input Noise Voltage
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
Input Capacitance
Input Voltage Range
Common Mode Rejection Ratio
(Note 5)
Large-Signal Voltage Gain
●
Output Voltage Swing LOW
Output Voltage Swing HIGH
Short-Circuit Current (Note 2)
Power Supply Rejection Ratio
Reverse Supply Voltage
Supply Current
Supply Current, SHDN
Shutdown Pin Current
Output Leakage Current, SHDN
Maximum Shutdown Pin Current
Turn-On Time
Turn-Off Time
V
CM
= 0V to V
CC
– 1V
V
CM
= 0V to 44V (Note 8)
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
V
S
= 2.7V to 12.5V, V
CM
= V
O
= 1V
I
S
= – 100µA
(Note 6)
V
PIN5
= 2V, No Load (Note 6)
V
PIN5
= 0.3V, No Load (Note 6)
V
PIN5
= 2V, No Load (Note 5)
V
PIN5
= 2V, No Load (Note 6)
V
PIN5
= 32V, No Load (Note 5)
V
PIN5
= 5V to 0V, R
L
= 10k
V
PIN5
= 0V to 5V, R
L
= 10k
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
3
LT1636
3V A D 5V ELECTRICAL CHARACTERISTICS
SYMBOL
GBW
PARAMETER
Gain Bandwidth Product
(Note 5)
Slew Rate
(Note 7)
CONDITIONS
f = 1kHz
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
The
●
denotes the specifications which apply over the full operating temperature range of –40°C
≤
T
A
≤
85°C.
V
S
= 3V, 0V; V
S
= 5V, 0V; V
CM
= V
OUT
= half supply unless otherwise specified. (Note 4)
LT1636C/LT1636I
MIN
TYP
MAX
110
200
100
90
0.035
0.07
0.031
0.030
UNITS
kHz
kHz
kHz
V/µs
V/µs
V/µs
SR
The
●
denotes the specifications which apply over the full operating temperature range of –40°C
≤
T
A
≤
85°C.
V
S
=
±15V,
V
CM
= 0V, V
OUT
= 0V, V
SHDN
= V
–
unless otherwise specified. (Note 4)
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
N8 Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
S8 Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
MS8 Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
DD Package
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
Input Offset Voltage Drift (Note 9)
N8 Package, – 40°C
≤
T
A
≤
85°C
S8 Package, – 40°C
≤
T
A
≤
85°C
MS8 Package, – 40°C
≤
T
A
≤
85°C
DD Package, – 40°C
≤
T
A
≤
85°C
●
●
±15V
ELECTRICAL CHARACTERISTICS
I
OS
I
B
e
n
i
n
R
IN
C
IN
CMRR
A
VOL
V
OL
V
OH
4
U
●
●
●
●
LT1636C/LT1636I
MIN
TYP
MAX
100
450
550
700
450
750
900
450
850
1200
650
1050
1200
4
8
10
10
1.0
10
UNITS
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV
µV/°C
µV/°C
µV/°C
µV/°C
nA
nA
µV
P-P
nV/√Hz
pA/√Hz
MΩ
MΩ
pF
100
●
●
100
●
●
125
●
●
●
●
●
●
●
●
1
2
2
2
0.2
4
1
52
0.035
5.2
13
12000
4
Input Offset Current
Input Bias Current
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
V
CM
= – 15V to 29V
V
O
=
±14V,
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
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
Differential
Common Mode, V
CM
= – 15V to 14V
●
●
●
●
●
●
●
●
●
●
– 15
86
100
75
50
103
500
29
V
dB
V/mV
V/mV
V/mV
Output Voltage Swing LOW
– 14.997
– 14.500
– 14.125
14.9
14.5
14.3
14.975
14.750
14.650
– 14.95
– 14.07
– 13.35
V
V
V
V
V
V
1636fc
Output Voltage Swing HIGH
LT1636
The
●
denotes the specifications which apply over the full operating temperature range of –40°C
≤
T
A
≤
85°C, otherwise
specifications are at T
A
= 25°C. V
S
=
±15V,
V
CM
= 0V, V
OUT
= 0V, V
SHDN
= V
–
unless otherwise specified. (Note 4)
SYMBOL
I
SC
PARAMETER
Short-Circuit Current (Note 2)
CONDITIONS
Short to GND
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
V
S
=
±1.35V
to
±22V
●
●
●
●
±15V
ELECTRICAL CHARACTERISTICS
LT1636C/LT1636I
MIN
TYP
MAX
±18
±15
±10
90
±30
UNITS
mA
mA
mA
dB
PSRR
I
S
Power Supply Rejection Ratio
Supply Current
Positive Supply Current, SHDN
114
50
70
85
30
15
8
150
2
µA
µA
µA
nA
µA
µA
µA
kHz
kHz
kHz
V/µs
V/µs
V/µs
V
PIN5
= – 20V, V
S
=
±22V,
No Load
V
PIN5
= – 21.7V, V
S
=
±22V,
No Load
V
PIN5
= – 20V, V
S
=
±22V,
No Load
V
PIN5
= 32V, V
S
=
±22V
V
PIN5
= – 20V, V
S
=
±22V,
No Load
f = 1kHz
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
A
V
= – 1, R
L
=
∞
, V
O
=
±10V
Measured at
±5V
0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
●
●
●
●
●
●
●
●
●
12
0.7
1.2
27
0.1
125
110
100
0.0375
0.033
0.030
220
I
SHDN
Shutdown Pin Current
Maximum Shutdown Pin Current
Output Leakage Current, SHDN
GBW
Gain Bandwidth Product
SR
Slew Rate
0.075
3V A D 5V ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
The
●
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 unless otherwise specified. (Note 4)
MIN
●
I
OS
I
B
CMRR
A
VOL
V
OL
V
OH
PSRR
U
LT1636H
TYP
50
MAX
325
3
10
3
1
30
10
UNITS
µV
mV
µV/°C
nA
µA
nA
µA
V
dB
dB
Input Offset Voltage Drift (Note 9)
Input Offset Current
V
CM
= 44V (Note 5)
Input Bias Current
V
CM
= 44V (Note 5)
Input Voltage Range
Common Mode Rejection Ratio
(Note 5)
Large-Signal Voltage Gain
V
CM
= 0.3V to V
CC
– 1V
V
CM
= 0.3V to 44V
V
S
= 3V, V
O
= 500mV to 2.5V, R
L
= 10k
V
S
= 5V, V
O
= 500mV to 4.5V, R
L
= 10k
Output Voltage Swing LOW
Output Voltage Swing HIGH
No Load
I
SINK
= 2.5mA
V
S
= 3V, No Load
V
S
= 3V, I
SOURCE
= 5mA
V
S
= 5V, No Load
V
S
= 5V, I
SOURCE
= 10mA
Power Supply Rejection Ratio
Minimum Supply Voltage
V
S
= 2.7V to 12.5V, V
CM
= V
O
= 1V
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
3
0.3
72
74
200
20
400
35
1300
2000
44
V/mV
V/mV
V/mV
V/mV
15
875
mV
mV
V
V
V
V
dB
V
1636fc
2.925
2.35
4.925
4.10
80
2.7
5
嵌入式系统
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