FEATURES
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LT1800
80MHz, 25V/µs Low Power
Rail-to-Rail Input and Output
Precision Op Amp
DESCRIPTION
The LT
®
1800 is a low power, high speed rail-to-rail input and
output operational amplifier with excellent DC performance.
The LT1800 features reduced supply current, lower input
offset voltage, lower input bias current and higher DC gain
than other devices with comparable bandwidth.
The LT1800 has an input range that includes both supply
rails and an output that swings within 20mV of either
supply rail to maximize the signal dynamic range in low
supply applications.
The LT1800 maintains its performance for supplies from
2.3V to 12.6V and is specified at 3V, 5V and ±5V supplies.
The inputs can be driven beyond the supplies without
damage or phase reversal of the output.
The LT1800 is available in the 8-pin SO package with
the standard op amp pinout and in the 5-pin TSOT-23
package. For dual and quad versions of the LT1800, see
the LT1801/LT1802 data sheet. The LT1800 can be used
as a plug-in replacement for many op amps to improve
input/output range and performance.
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.
Gain Bandwidth Product: 80MHz
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Quiescent Current: 2mA Max
Input Offset Voltage: 350μV Max
Input Bias Current: 250nA Max
Low Voltage Noise: 8.5nV/√Hz
Slew Rate: 25V/μs
Common Mode Rejection: 105dB
Power Supply Rejection: 97dB
Open-Loop Gain: 85V/mV
Operating Temperature Range: –40°C to 85°C
Available in the 8-Pin SO and 5-Pin Low Profile
(1mm) ThinSOT™ Packages
APPLICATIONS
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Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
Active Filters
Video Line Driver
TYPICAL APPLICATION
Single Supply 1A Laser Driver Amplifier
5V
Laser Driver Amplifier 500mA Pulse Response
–
+
LT1800
V
IN
DO NOT FLOAT
R3
10Ω
C1
39pF
R2
330Ω
Q1
ZETEX
FMMT619
IR LASER
INFINEON
SFH495
100mA/DIV
R1
1Ω
1800 TA01a
50ns/DIV
1800 TA01b
1800fa
1
LT1800
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V
S–
to V
S+
) ..........................12.6V
Input Current (Note 2)..........................................±10mA
Output Short-Circuit Duration (Note 3) ............ Indefinite
Operating Temperature Range (Note 4).... –40°C to 85°C
Specified Temperature Range (Note 5) .... –40°C to 85°C
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
NC 1
–IN 2
+IN 3
V
S–
4
8
NC
V
S+
V
OUT
NC
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/W
V
OUT
1
+IN 3
– +
7
6
5
5 V
S+
4 –IN
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 190°C/W
ORDER INFORMATION
LEAD FREE FINISH
LT1800CS8#PBF
LT1800IS8#PBF
LT1800CS5#PBF
LT1800IS5#PBF
TAPE AND REEL
LT1800CS8#TRPBF
LT1800IS8#TRPBF
LT1800CS5#TRPBF
LT1800IS5#TRPBF
PART MARKING
1800
1800I
LTRN
LTRP
PACKAGE DESCRIPTION
8-Lead Plastic SO
8-Lead Plastic SO
5-Lead Plastic TSOT-23
5-Lead Plastic TSOT-23
SPECIFIED TEMPERATURE RANGE
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/
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
T
A
= 25°C. V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
CONDITIONS
V
CM
= 0V
V
CM
= 0V (SOT-23)
V
CM
= V
S
V
CM
= V
S
(SOT-23)
V
CM
= 0V to V
S
– 1.5V
V
CM
= 1V
V
CM
= V
S
V
CM
= 1V
V
CM
= V
S
0.1Hz to 10Hz
MIN
TYP
75
300
0.5
0.7
20
25
500
25
25
1.4
MAX
350
750
3
3.5
180
250
1500
200
200
UNITS
μV
μV
mV
mV
μV
nA
nA
nA
nA
μV
P-P
1800fa
ΔV
OS
I
B
I
OS
Input Offset Shift
Input Bias Current
Input Offset Current
Input Noise Voltage
2
+
–
V
S–
2
LT1800
ELECTRICAL CHARACTERISTICS
SYMBOL
e
n
i
n
C
IN
A
VOL
PARAMETER
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
Large-Signal Voltage Gain
f = 10kHz
f = 10kHz
f = 100kHz
V
S
= 5V, V
O
= 0.5V to 4.5V, R
L
= 1k at V
S
/2
V
S
= 5V, V
O
= 1V to 4V, R
L
= 100Ω at V
S
/2
V
S
= 3V, V
O
= 0.5V to 2.5V, R
L
= 1k at V
S
/2
V
S
= 5V, V
CM
= 0V to 3.5V
V
S
= 3V, V
CM
= 0V to 1.5V
V
S
= 2.5V to 10V, V
CM
= 0V
No Load
I
SINK
= 5mA
I
SINK
= 20mA
No Load
I
SOURCE
= 5mA
I
SOURCE
= 20mA
V
S
= 5V
V
S
= 3V
Frequency = 2MHz
V
S
= 5V, A
V
= –1, R
L
= 1k, V
O
= 4V
V
S
= 5V, V
OUT
= 4V
P-P
V
S
= 5V, A
V
= 1, R
L
= 1k, V
O
= 2V
P-P
, f
C
= 500kHz
0.01%, V
S
= 5V, V
STEP
= 2V, A
V
= 1, R
L
= 1k
V
S
= 5V, A
V
= +2, R
L
= 150Ω
V
S
= 5V, A
V
= +2, R
L
= 150Ω
20
20
40
13
35
3.5
30
85
78
0
80
97
2.3
12
80
225
16
120
450
45
40
1.6
80
25
2
–75
250
0.35
0.4
2
2.5
50
160
450
60
250
850
T
A
= 25°C. V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
CONDITIONS
MIN
TYP
8.5
1
2
85
8
85
105
97
V
S
MAX
UNITS
nV/√Hz
pA/√Hz
pF
V/mV
V/mV
V/mV
dB
dB
V
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
mA
MHz
V/μs
MHz
dBc
ns
%
Deg
CMRR
Common Mode Rejection Ratio
Input Common Mode Range
PSRR
V
OL
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
Output Voltage Swing Low (Note 7)
V
OH
Output Voltage Swing High (Note 7)
I
SC
I
S
GBW
SR
FPBW
HD
t
S
ΔG
Δθ
Short-Circuit Current
Supply Current per Amplifier
Gain Bandwidth Product
Slew Rate
Full Power Bandwidth
Harmonic Distortion
Settling Time
Differential Gain (NTSC)
Differential Phase (NTSC)
The
l
denotes the specifications which apply over the temperature range of 0°C ≤ T
A
≤ 70°C. V
S
= 5V, 0V; V
S
= 3V, 0V;
V
CM
= V
OUT
= half supply, unless otherwise noted.
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
V
CM
= 0V
V
CM
= 0V (SOT-23)
V
CM
= V
S
V
CM
= V
S
(SOT-23)
V
CM
= 0V to V
S
– 1.5V
V
CM
= 1V
V
CM
= V
S
– 0.2V
V
CM
= 1V
V
CM
= V
S
– 0.2V
V
S
= 5V, V
O
= 0.5V to 4.5V, R
L
= 1k at V
S
/2
V
S
= 5V, V
O
= 1V to 4V, R
L
= 100Ω at V
S
/2
V
S
= 3V, V
O
= 0.5V to 2.5V, R
L
= 1k at V
S
/2
V
S
= 5V, V
CM
= 0V to 3.5V
V
S
= 3V, V
CM
= 0V to 1.5V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
TYP
125
300
0.6
0.7
30
1.5
50
550
25
25
MAX
500
1250
3.5
3.75
275
5
300
1750
250
250
UNITS
μV
μV
mV
mV
μV
μV/°C
nA
nA
nA
nA
V/mV
V/mV
V/mV
dB
dB
1800fa
ΔV
OS
V
OS
TC
I
B
I
OS
A
VOL
Input Offset Shift
Input Offset Voltage Drift (Note 8)
Input Bias Current
Input Offset Current
Large-Signal Voltage Gain
30
3
25
82
74
75
6
75
101
93
CMRR
Common Mode Rejection Ratio
3
LT1800
ELECTRICAL CHARACTERISTICS
SYMBOL
PSRR
V
OL
PARAMETER
Input Common Mode Range
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
Output Voltage Swing Low (Note 7)
No Load
I
SINK
= 5mA
I
SINK
= 20mA
No Load
I
SOURCE
= 5mA
I
SOURCE
= 20mA
V
S
= 5V
V
S
= 3V
Frequency = 2MHz
V
S
= 5V, A
V
= – 1, R
L
= 1k, V
O
= 4V
P-P
V
S
= 2.5V to 10V, V
CM
= 0V
The
l
denotes the specifications which apply over the temperature range of
0°C ≤ T
A
≤ 70°C. C. V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
CONDITIONS
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
0
74
TYP
91
2.3
14
100
300
25
150
600
MAX
V
S
2.5
60
200
550
80
300
1000
UNITS
V
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
V
OH
Output Voltage Swing High (Note 7)
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amplifier
Gain Bandwidth Product
Slew Rate
20
20
35
11
40
30
2
75
22
2.75
mA
MHz
V/μs
The
l
denotes the specifications which apply over the temperature range of –40°C ≤ T
A
≤ 85°C. V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
=
half supply, unless otherwise noted.
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
V
CM
= 0V
V
CM
= 0V (SOT-23)
V
CM
= V
S
V
CM
= V
S
(SOT-23)
V
CM
= 0V to V
S
– 1.5V
V
CM
= 1V
V
CM
= V
S
– 0.2V
V
CM
= 1V
V
CM
= V
S
– 0.2V
V
S
= 5V, V
O
= 0.5V to 4.5V, R
L
= 1k at V
S
/2
V
S
= 5V, V
O
= 1.5V to 3.5V, R
L
= 100Ω at V
S
/2
V
S
= 3V, V
O
= 0.5V to 2.5V, R
L
= 1k at V
S
/2
V
S
= 5V, V
CM
= 0V to 3.5V
V
S
= 3V, V
CM
= 0V to 1.5V
V
S
= 2.5V to 10V, V
CM
= 0V
No Load
I
SINK
= 5mA
I
SINK
= 10mA
No Load
I
SOURCE
= 5mA
I
SOURCE
= 10mA
V
S
= 5V
V
S
= 3V
Frequency = 2MHz
V
S
= 5V, A
V
= – 1, R
L
= 1k, V
O
= 4V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
TYP
175
400
0.75
0.9
30
1.5
50
600
25
25
MAX
700
2000
4
4
300
5
400
2000
300
300
UNITS
μV
μV
mV
mV
μV
μV/°C
nA
nA
nA
nA
V/mV
V/mV
V/mV
dB
dB
ΔV
OS
V
OS
TC
I
B
I
OS
A
VOL
Input Offset Shift
Input Offset Voltage Drift (Note 8)
Input Bias Current
Input Offset Current
Large-Signal Voltage Gain
25
2.5
20
81
73
0
73
65
6
65
101
93
V
S
90
2.3
15
105
170
25
150
300
2.5
70
210
400
90
350
700
CMRR
Common Mode Rejection Ratio
Input Common Mode Range
V
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
PSRR
V
OL
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
Output Voltage Swing Low (Note 7)
V
OH
Output Voltage Swing High (Note 7)
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amplifier
Gain Bandwidth Product
Slew Rate
12.5
12.5
30
10
30
30
2.1
70
18
3
mA
MHz
V/μs
1800fa
4
LT1800
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
T
A
= 25°C, V
S
= ±5V, V
CM
= 0V, V
OUT
= 0V, unless otherwise noted.
MIN
TYP
150
400
0.7
1
30
25
400
20
20
1.4
8.5
1
2
25
2.5
85
V
S–
80
70
7
109
V
S+
97
15
85
225
17
130
450
30
50
1.8
2.75
70
23
0.9
–75
300
0.35
0.2
60
170
450
70
260
900
MAX
500
1000
3.5
4.5
475
350
1500
250
250
UNITS
μV
μV
mV
mV
μV
nA
nA
nA
nA
μV
P-P
nV/√Hz
pA/√Hz
pF
V/mV
V/mV
dB
V
dB
mV
mV
mV
mV
mV
mV
mA
mA
MHz
V/μs
MHz
dBc
ns
%
Deg
CONDITIONS
V
CM
= V
S–
V
CM
= V
S–
(SOT-23)
V
CM
= V
S+
V
CM
= V
S+
(SOT-23)
V
CM
= V
S–
to V
S+
– 1.5V
V
CM
= V
S–
+ 1V
V
CM
= V
S+
V
CM
= V
S–
+ 1V
V
CM
= V
S+
0.1Hz to 10Hz
f = 10kHz
f = 10kHz
f = 100kHz
V
O
= –4V to 4V, R
L
= 1k
V
O
= –2V to 2V, R
L
= 100Ω
V
CM
= V
S–
to 3.5V
V
S+
= 2.5V to 10V, V
S–
= 0V
No Load
I
SINK
= 5mA
I
SINK
= 20mA
No Load
I
SOURCE
= 5mA
I
SOURCE
= 20mA
ΔV
OS
I
B
I
OS
Input Offset Shift
Input Bias Current
Input Offset Current
Input Noise Voltage
e
n
i
n
C
IN
A
VOL
CMRR
PSRR
V
OL
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
Large-Signal Voltage Gain
Common Mode Rejection Ratio
Input Common Mode Range
Power Supply Rejection Ratio
Output Voltage Swing Low (Note 7)
V
OH
Output Voltage Swing High (Note 7)
I
SC
I
S
GBW
SR
FPBW
HD
t
S
ΔG
Δθ
Short-Circuit Current
Supply Current per Amplifier
Gain Bandwidth Product
Slew Rate
Full Power Bandwidth
Harmonic Distortion
Settling Time
Differential Gain (NTSC)
Differential Phase (NTSC)
Frequency = 2MHz
A
V
= – 1, R
L
= 1k, V
O
= ±4V, Measured at V
O
= ±2V
V
O
= 8V
P-P
A
V
= 1, R
L
= 1k, V
O
= 2V
P-P
, f
C
= 500kHz
0.01%, V
STEP
= 5V, A
V
= 1V, R
L
= 1k
A
V
= + 2, R
L
= 150Ω
A
V
= + 2, R
L
= 150Ω
The
l
denotes the specifications which apply over the temperature range of 0°C ≤ T
A
≤ 70°C. V
S
= ±5V, V
CM
= 0V, V
OUT
= 0V, unless
otherwise noted.
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
V
CM
= V
S–
V
CM
= V
S–
(SOT-23)
V
CM
= V
S+
V
CM
= V
S+
(SOT-23)
V
CM
= V
S–
to V
S+
– 1.5V
V
CM
= V
S–
+ 1V
V
CM
= V
S+
– 0.2V
l
l
l
l
l
l
l
l
MIN
TYP
200
450
0.75
1
45
1.5
30
450
MAX
800
1500
4
5
675
5
400
1750
UNITS
μV
μV
mV
mV
μV
μV/°C
nA
nA
1800fa
ΔV
OS
V
OS
TC
I
B
Input Offset Shift
Input Offset Voltage Drift (Note 8)
Input Bias Current
5
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