LT1800
80MHz, 25V/µs Low Power
Rail-to-Rail Input and Output
Precision Op Amp
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
s
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
Available in the 8-Pin SO and 5-Pin Low Profile
(1mm) ThinSOT
TM
Packages
Operating Temperature Range: – 40°C to 85°C
The LT
®
1800 is a low power, high speed rail-to-rail input
and output operational amplifier with excellent DC perfor-
mance. 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 sup-
ply 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 SOT-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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
Active Filters
Video Line Driver
TYPICAL APPLICATIO
Single Supply 1A Laser Driver Amplifier
5V
Laser Driver Amplifier
500mA Pulse Response
–
+
V
IN
DO NOT FLOAT
R3
10
Ω
LT1800
C1
39pF
R2
330
Ω
Q1
ZETEX
FMMT619
IR LASER
INFINEON
SFH495
100mA/DIV
R1
1
Ω
1800 TA01
U
50ns/DIV
1800 TA02
U
U
1800f
1
LT1800
ABSOLUTE
AXI U
RATI GS
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
PACKAGE/ORDER I FOR ATIO
TOP VIEW
NC 1
–IN 2
+IN 3
V
S–
4
8
NC
V
S+
V
OUT
NC
ORDER PART
NUMBER
7
6
5
+IN 3
S8 PART MARKING
1800
1800I
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 190°C/ W
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
T
A
= 25°C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
SYMBOL PARAMETER
V
OS
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
V
CM
= 1V
V
CM
= V
S
0.1Hz to 10Hz
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
35
3.5
30
85
78
0
80
97
2.3
2.5
MIN
TYP
75
300
0.5
0.7
20
25
500
25
25
1.4
8.5
1
2
85
8
85
105
97
V
S
MAX
350
750
3
3.5
180
250
1500
200
200
UNITS
µV
µV
mV
mV
µV
nA
nA
nA
nA
µV
P-P
nV/√Hz
pA/√Hz
pF
V/mV
V/mV
V/mV
dB
dB
V
dB
V
1800f
∆V
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
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
Large-Signal Voltage Gain
CMRR
Common Mode Rejection Ratio
Input Common Mode Range
PSRR
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
2
– +
LT1800CS8
LT1800IS8
U
U
W
W W
U
W
(Note 1)
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
TOP VIEW
V
OUT
1
V
S–
2
5 V
S+
4 –IN
ORDER PART
NUMBER
LT1800CS5
LT1800IS5
S5 PART MARKING
LTRN
LTRP
+
–
LT1800
ELECTRICAL CHARACTERISTICS
T
A
= 25°C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
SYMBOL PARAMETER
V
OL
Output Voltage Swing Low (Note 7)
CONDITIONS
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
MIN
TYP
12
80
225
16
120
450
45
40
1.6
80
25
2
–75
250
0.35
0.4
MAX
50
160
450
60
250
750
UNITS
mV
mV
mV
mV
mV
mV
mA
mA
mA
MHz
V/µs
MHz
dBc
ns
%
Deg
V
OH
Output Voltage Swing High (Note 7)
I
SC
I
S
GBW
SR
FPBW
HD
t
S
∆G
∆θ
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)
20
20
40
13
2
The
q
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 PARAMETER
V
OS
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
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
P-P
MIN
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
∆V
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
CMRR
Common Mode Rejection Ratio
Input Common Mode Range
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
Output Voltage Swing Low (Note 7)
PSRR
V
OL
30
3
25
82
74
0
74
TYP
125
300
0.6
0.7
30
1.5
50
550
25
25
75
6
75
101
93
91
2.3
14
100
300
25
150
600
40
30
2
75
22
MAX
500
1250
3.5
3.75
275
5
300
1750
250
250
V
S
2.5
60
200
550
80
300
950
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
2.75
UNITS
µV
µV
mV
mV
µV
µV/°C
nA
nA
nA
nA
V/mV
V/mV
V/mV
dB
dB
V
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
mA
MHz
V/µs
1800f
3
LT1800
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
Input Offset Voltage
The
q
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. (Note 5)
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
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
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
∆V
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
T
A
= 25°C, V
S
=
±5V,
V
CM
= 0V, V
OUT
= 0V, unless otherwise noted.
SYMBOL PARAMETER
V
OS
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+
V
CM
= V
S–
+ 1V
V
CM
= V
S+
0.1Hz to 10Hz
f = 10kHz
f = 10kHz
f = 100kHz
MIN
TYP
150
400
0.7
1
30
25
400
20
20
1.4
8.5
1
2
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
1800f
∆V
OS
I
B
I
OS
Input Offset Shift
Input Bias Current
Input Offset Current
Input Noise Voltage
e
n
i
n
C
IN
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
4
LT1800
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
A
VOL
CMRR
PSRR
V
OL
Large-Signal Voltage Gain
Common Mode Rejection Ratio
Input Common Mode Range
Power Supply Rejection Ratio
Output Voltage Swing Low (Note 7)
T
A
= 25°C, V
S
=
±5V,
V
CM
= 0V, V
OUT
= 0V, unless otherwise noted.
CONDITIONS
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
30
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
MIN
25
2.5
85
V
S–
80
97
15
85
225
17
130
450
50
1.8
70
23
0.9
–75
300
0.35
0.2
2.75
60
170
450
70
260
750
TYP
70
7
109
V
S+
MAX
UNITS
V/mV
V/mV
dB
V
dB
mV
mV
mV
mV
mV
mV
mA
mA
MHz
V/µs
MHz
dBc
ns
%
Deg
V
OH
Output Voltage Swing High (Note 7)
I
SC
I
S
GBW
SR
FPBW
HD
t
S
∆G
∆θ
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
q
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 PARAMETER
V
OS
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
V
CM
= V
S–
+ 1V
V
CM
= V
S+
– 0.2V
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
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
MIN
TYP
200
450
0.75
1
45
1.5
30
450
25
25
MAX
800
1500
4
5
675
5
400
1750
300
300
UNITS
µV
µV
mV
mV
µV
µV/°C
nA
nA
nA
nA
V/mV
V/mV
dB
∆V
OS
V
OS
TC
I
B
I
OS
A
VOL
CMRR
PSRR
V
OL
Input Offset Shift
Input Offset Voltage Drift (Note 8)
Input Bias Current
Input Offset Current
Large-Signal Voltage Gain
Common Mode Rejection Ratio
Input Common Mode Range
Power Supply Rejection Ratio
Output Voltage Swing Low (Note 7)
20
2
82
V
S–
74
55
5
105
V
S+
91
17
105
250
25
150
600
70
210
575
90
310
975
V
dB
mV
mV
mV
mV
mV
mV
1800f
V
OH
Output Voltage Swing High (Note 7)
5
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