FEATURES
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LT1812
3mA, 100MHz, 750V/µs
Operational Amplifier
with Shutdown
DESCRIPTION
The LT
®
1812 is a low power, high speed, very high slew
rate operational amplifier with excellent DC performance.
The LT1812 features reduced supply current, lower input
offset voltage, lower input bias current and higher DC gain
than other devices with comparable bandwidth. A power
saving shutdown feature reduces supply current to 50μA.
The circuit topology is a voltage feedback amplifier with the
slewing characteristics of a current feedback amplifier.
The output drives a 100Ω load to ± 3.5V with ±5V supplies.
On a single 5V supply, the output swings from 1.1V to
3.9V with a 100Ω load connected to 2.5V. The amplifier
is stable with a 1000pF capacitive load which makes it
useful in buffer and cable driver applications.
The LT1812 is manufactured on Linear Technology’s
advanced low voltage complementary bipolar process.
The dual version is the LT1813. For higher supply voltage
single, dual and quad operational amplifiers with up to
70MHz gain bandwidth, see the LT1351 through LT1365
data sheets.
L,
LT, LTC, LTM, Linear Technology and the Linear logo 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.
100MHz Gain Bandwidth
750V/μs Slew Rate
3.6mA Maximum Supply Current
50μA Supply Current in Shutdown
8nV/√Hz Input Noise Voltage
Unity-Gain Stable
1.5mV Maximum Input Offset Voltage
4μA Maximum Input Bias Current
400nA Maximum Input Offset Current
40mA Minimum Output Current, V
OUT
= ± 3V
±3.5V Minimum Input CMR, V
S
= ±5V
30ns Settling Time to 0.1%, 5V Step
Specified at ±5V, Single 5V Supplies
Operating Temperature Range: –40°C to 85°C
Low Profile (1mm) SOT-23 (ThinSOT
™
)
and S8 Packages
APPLICATIONS
n
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Wideband Amplifiers
Buffers
Active Filters
Video and RF Amplification
Cable Drivers
Data Acquisition Systems
TYPICAL APPLICATION
4MHz, 4th Order Butterworth Filter
232Ω
VOLTAGE GAIN (dB)
274Ω
47pF
10
0
–10
–20
–30
–40
–50
–60
–70
1812 TA01
Filter Frequency Response
V
IN
220pF
LT1812
470pF
+
–
LT1812
V
OUT
+
–
232Ω
665Ω
274Ω
562Ω
22pF
–80
–90
0.1
V
S
= ±5V
V
IN
= 600mV
P-P
PEAKING < 0.12dB
1
10
FREQUENCY (MHz)
100
1812 TA02
1812fb
1
LT1812
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V
+
to V
–
) ..............................12.6V
Differential Input Voltage (Transient Only, Note 2) ......±3V
Input Voltage, Shutdown Voltage...............................±V
S
Output Short-Circuit Duration (Note 3) ............. Indefinite
Operating Temperature Range (Note 8)..... – 40°C to 85°C
Specified Temperature Range
(Note 8) .................................................... –40°C to 85°C
Maximum Junction Temperature ........................... 150°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
V
OUT
1
V
–
2
+IN 3
+
–
4 –IN
5 V
+
V
OUT
1
V
–
2
+IN 3
+
–
TOP VIEW
6 V
+
5
SHDN
4 –IN
NC 1
–IN 2
+IN 3
V
–
4
–
+
8
7
6
5
SHDN
V
+
V
OUT
NC
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/ W
(NOTE 9)
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 230°C/ W
(NOTE 9)
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 150°C/ W
(NOTE 9)
ORDER INFORMATION
LEAD FREE FINISH
LT1812CS5#PBF
LT1812IS5#PBF
LT1812CS6#PBF
LT1812IS6#PBF
LT1812CS8#PBF
LT1812IS8#PBF
TAPE AND REEL
LT1812CS5#TRPBF
LT1812IS5#TRPBF
LT1812CS6#TRPBF
LT1812IS6#TRPBF
LT1812CS8#TRPBF
LT1812IS8#TRPBF
PART MARKING
LTLH
LTLJ
LTLK
LTLL
1812
1812I
PACKAGE DESCRIPTION
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
8-Lead Plastic SO
8-Lead Plastic SO
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
0°C to 70°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard 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/
1812fb
2
LT1812
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
I
OS
I
B
e
n
i
n
R
IN
C
IN
V
CM
CMRR
PSRR
A
VOL
V
OUT
I
OUT
I
SC
SR
FPBW
GBW
t
r
, t
f
OS
t
PD
t
s
THD
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
Input Capacitance
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Common Mode Rejection Ratio
Minimum Supply Voltage
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Swing
Maximum Output Current
Output Short-Circuit Current
Slew Rate
Full Power Bandwidth
Gain Bandwidth Product
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling Time
Total Harmonic Distortion
Differential Gain
Differential Phase
R
OUT
I
SHDN
I
S
Output Resistance
SHDN
Pin Current
Supply Current
V
S
= ±2V to ±5.5V
V
OUT
= ±3V, R
L
= 500Ω
V
OUT
= ±3V, R
L
= 100Ω
R
L
= 500Ω, 30mV Overdrive
R
L
= 100Ω, 30mV Overdrive
V
OUT
= ±3V, 30mV Overdrive
V
OUT
= 0V, 1V Overdrive (Note 3)
A
V
= –1 (Note 5)
3V Peak (Note 6)
f = 200kHz
A
V
= 1, 10% to 90%, 0.1V, R
L
= 100Ω
A
V
= 1, 0.1V, R
L
= 100Ω
A
V
= 1, 50% V
IN
to 50% V
OUT
, 0.1V, R
L
= 100Ω
5V Step, 0.1%, A
V
= – 1
f = 1MHz, V
OUT
= 2V
P-P
, A
V
= 2, R
L
= 500Ω
V
OUT
= 2V
P-P
, A
V
= 2, R
L
= 150Ω
V
OUT
= 2V
P-P
, A
V
= 2, R
L
= 150Ω
A
V
= 1, f = 1MHz
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
–100
75
78
1.5
1.0
±3.80
±3.35
±40
± 75
500
V
CM
= ±3.5V
3.5
75
f = 10kHz
f = 10kHz
V
CM
= ±3.5V
Differential
3
T
A
= 25°C, V
S
= ± 5V, V
CM
= 0V unless otherwise noted (Note 10).
MIN
TYP
0.4
30
– 0.9
8
1
10
1.5
2
4.2
–4.2
85
±1.25
97
3.0
2.5
±4.0
±3.5
±60
±110
750
40
100
2
25
2.8
30
–76
0.12
0.07
0.4
0
–50
3
50
±1
3.6
100
±2
–3.5
MAX
1.5
400
±4
UNITS
mV
nA
μA
nV/√Hz
pA/√Hz
MΩ
MΩ
pF
V
V
dB
V
dB
V/mV
V/mV
V
V
mA
mA
V/μs
MHz
MHz
ns
%
ns
ns
dB
%
DEG
Ω
μA
μA
mA
μA
CONDITIONS
(Note 4)
T
A
= 25°C, V
S
= 5V, V
CM
= 2.5V, R
L
to 2.5V unless otherwise noted (Note 10).
SYMBOL
V
OS
I
OS
I
B
e
n
i
n
R
IN
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
f = 10kHz
f = 10kHz
V
CM
= 1.5V to 3.5V
Differential
3
CONDITIONS
(Note 4)
MIN
TYP
0.5
30
–1.0
8
1
10
1.5
MAX
2.0
400
±4
UNITS
mV
nA
μA
nV/√Hz
pA/√Hz
MΩ
MΩ
1812fb
3
LT1812
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
C
IN
V
CM
CMRR
A
VOL
V
OUT
Input Capacitance
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Common Mode Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Swing (Positive)
Maximum Output Swing (Negative)
I
OUT
I
SC
SR
FPBW
GBW
t
r
, t
f
OS
t
PD
t
s
THD
Maximum Output Current
Output Short-Circuit Current
Slew Rate
Full Power Bandwidth
Gain Bandwidth Product
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling Time
Total Harmonic Distortion
Differential Gain
Differential Phase
R
OUT
I
SHDN
I
S
Output Resistance
SHDN
Pin Current
Supply Current
V
CM
= 1.5V to 3.5V
V
OUT
= 1.5V to 3.5V, R
L
= 500Ω
V
OUT
= 1.5V to 3.5V, R
L
= 100Ω
R
L
= 500Ω, 30mV Overdrive
R
L
= 100Ω, 30mV Overdrive
R
L
= 500Ω, 30mV Overdrive
R
L
= 100Ω, 30mV Overdrive
V
OUT
= 3.5V or 1.5V, 30mV Overdrive
V
OUT
= 2.5V, 1V Overdrive (Note 3)
A
V
= –1 (Note 5)
1V Peak (Note 6)
f = 200kHz
A
V
= 1, 10% to 90%, 0.1V, R
L
= 100Ω
A
V
= 1, 0.1V, R
L
= 100Ω
A
V
= 1, 50% V
IN
to 50% V
OUT
, 0.1V, R
L
= 100Ω
2V Step, 0.1%, A
V
= –1
f = 1MHz, V
OUT
= 2V
P-P
, A
V
= 2, R
L
= 500Ω
V
OUT
= 2V
P-P
, A
V
= 2, R
L
= 150Ω
V
OUT
= 2V
P-P
, A
V
= 2, R
L
= 150Ω
A
V
= 1, f = 1MHz
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
–50
65
± 25
±55
200
3.5
73
1.0
0.7
3.9
3.7
T
A
= 25°C, V
S
= ± 5V, V
CM
= 0V unless otherwise noted (Note 10).
MIN
TYP
2
4
1
82
2.0
1.5
4.1
3.9
0.9
1.1
±40
±80
350
55
94
2.1
25
3
30
–75
0.22
0.21
0.45
0
–20
2.7
20
±1
3.6
50
1.1
1.3
1.5
MAX
UNITS
pF
V
V
dB
V/mV
V/mV
V
V
V
V
mA
mA
V/μs
MHz
MHz
ns
%
ns
ns
dB
%
DEG
Ω
μA
μA
mA
μA
CONDITIONS
0°C ≤ T
A
≤ 70°C, V
S
= ± 5V, V
CM
= 0V unless otherwise noted (Note 10).
SYMBOL PARAMETER
V
OS
ΔV
OS
/ΔT
I
OS
I
B
V
CM
CMRR
PSRR
A
VOL
V
OUT
I
OUT
Input Offset Voltage
Input Offset Voltage Drift
Input Offset Current
Input Bias Current
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Common Mode Rejection Ratio
Minimum Supply Voltage
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Swing
Maximum Output Current
V
S
= ±2V to ±5.5V
V
OUT
= ±3V, R
L
= 500Ω
V
OUT
= ±3V, R
L
= 100Ω
R
L
= 500Ω, 30mV Overdrive
R
L
= 100Ω, 30mV Overdrive
V
OUT
= ±3V, 30mV Overdrive
76
1.0
0.7
±3.70
±3.25
±35
V
CM
= ±3.5V
3.5
–3.5
73
±2
CONDITIONS
(Note 4)
(Note 7)
10
MIN
TYP
MAX
2
15
500
±5
UNITS
mV
μV/°C
nA
μA
V
V
dB
V
dB
V/mV
V/mV
V
V
mA
1812fb
4
LT1812
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
I
SC
SR
GBW
I
SHDN
I
S
Output Short-Circuit Current
Slew Rate
Gain Bandwidth Product
SHDN
Pin Current
Supply Current
0°C ≤ T
A
≤ 70°C, V
S
= ± 5V, V
CM
= 0V unless otherwise noted (Note 10).
MIN
±60
400
65
± 1.5
–150
4.6
150
TYP
MAX
UNITS
mA
V/μs
MHz
μA
μA
mA
μA
CONDITIONS
V
OUT
= 0V, 1V Overdrive (Note 3)
A
V
= –1 (Note 5)
f = 200kHz
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
0°C ≤ T
A
≤ 70°C, V
S
= 5V, V
CM
= 2.5V, R
L
to 2.5V unless otherwise noted (Note 10).
SYMBOL
V
OS
ΔV
OS
/ΔT
I
OS
I
B
V
CM
CMRR
A
VOL
V
OUT
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift
Input Offset Current
Input Bias Current
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Common Mode Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Swing (Positive)
Maximum Output Swing (Negative)
I
OUT
I
SC
SR
GBW
I
SHDN
I
S
Maximum Output Current
Output Short-Circuit Current
Slew Rate
Gain Bandwidth Product
SHDN
Pin Current
Supply Current
V
CM
= 1.5V to 3.5V
V
OUT
= 1.5V to 3.5V, R
L
= 500Ω
V
OUT
= 1.5V to 3.5V, R
L
= 100Ω
R
L
= 500Ω, 30mV Overdrive
R
L
= 100Ω, 30mV Overdrive
R
L
= 500Ω, 30mV Overdrive
R
L
= 100Ω, 30mV Overdrive
V
OUT
= 3.5V or 1.5V, 30mV Overdrive
V
OUT
= 2.5V, 1V Overdrive (Note 3)
A
V
= –1 (Note 5)
f = 200kHz
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
SHDN
> V
–
+ 2.0V (On) (Note 11)
SHDN
< V
–
+ 0.4V (Off) (Note 11)
±20
±45
150
55
±1.5
–75
4.5
75
3.5
1.5
71
0.7
0.5
3.8
3.6
1.2
1.4
CONDITIONS
(Note 4)
(Note 7)
10
MIN
TYP
MAX
2.5
15
500
±5
UNITS
mV
μV/°C
nA
μA
V
V
dB
V/mV
V/mV
V
V
V
V
mA
mA
V/μs
MHz
μA
μA
mA
μA
– 40°C ≤ T
A
≤ 85°C. V
S
= ±5V, V
CM
= 0V unless otherwise noted (Notes 8, 10).
SYMBOL
V
OS
I
OS
I
B
V
CM
CMRR
PSRR
A
VOL
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Common Mode Rejection Ratio
Minimum Supply Voltage
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V
S
= ±2V to ±5.5V
V
OUT
= ±3V, R
L
= 500Ω
V
OUT
= ±3V, R
L
= 100Ω
75
0.8
0.6
V
CM
= ±3.5V
3.5
–3.5
72
±2
CONDITIONS
(Note 4)
(Note 7)
10
MIN
TYP
MAX
3
30
600
±6
UNITS
mV
μV/°C
nA
μA
V
V
dB
V
dB
V/mV
V/mV
1812fb
ΔV
OS
/ΔT Input Offset Voltage Drift
5
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