FEATURES
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LT1801/LT1802
Dual/Quad 80MHz, 25V/µs
Low Power Rail-to-Rail Input and
Output Precision Op Amps
DESCRIPTION
The LT
®
1801/LT1802 are dual/quad, low power, high speed
rail-to-rail input and output operational amplifiers with
excellent DC performance. The LT1801/LT1802 feature
reduced supply current, lower input offset voltage, lower
input bias current and higher DC gain than other devices
with comparable bandwidth.
Typically, the LT1801/LT1802 have an input offset voltage
of less than 100μV, an input bias current of less than 50nA
and an open-loop gain of 85 thousand.
The LT1801/LT1802 have 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 LT1801/LT1802 maintain their performance for sup-
plies from 2.3V to 12.6V and are specified at 3V, 5V and
±5V supplies. The inputs can be driven beyond the supplies
without damage or phase reversal of the output.
The LT1801 is available in the MS8, SO-8 and the 3mm
×
3mm
×
0.8mm dual fine pitch leadless package (DFN)
with the standard dual op amp pinout. The LT1802 features
the standard quad op amp configuration and is available
in the 14-pin plastic SO package. The LT1801/LT1802 can
be used as plug-in replacements for many op amps to
improve input/output range and performance.
For a single version of these amplifiers, see the LT1800
data sheet.
1MHz Filter Frequency Response
0
–20
Gain Bandwidth Product: 80MHz
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Voltage Operation: Single or Split Supplies
2.3V to 12.6V
Low Quiescent Current: 2mA/Amplifier Max
Input Offset Voltage: 350μV Max
Input Bias Current: 250nA Max
3mm
×
3mm
×
0.8mm DFN Package
Large Output Current: 50mA Typ
Low Voltage Noise: 8.5nV/√Hz Typ
Slew Rate: 25V/μs Typ
Common Mode Rejection: 105dB Typ
Power Supply Rejection: 97dB Typ
Open-Loop Gain: 85V/mV Typ
Operating Temperature Range: – 40°C to 85°C
LT1801 is Available in 8-Lead SO, MS8 and DFN
Packages
LT1802 is Available in 14-Lead SO Package
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
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
3V, 1MHz, 4th Order Butterworth Filter
909Ω
909Ω
V
IN
220pF
2.67k
47pF
1.1k
22pF
3V
GAIN (dB)
–40
–60
–80
1/2 LT1801
470pF
V
S
/2
+
–
1/2 LT1801
V
OUT
18012 TA01
+
–
1.1k
2.21k
–100
–120
1k
10k
100k
1M
FREQUENCY (Hz)
10M
100M
18012 TA02
18012fc
1
LT1801/LT1802
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
Maximum Junction Temperature (DD Package) .... 125°C
Storage Temperature (DD Package) ....... –65°C to 125°C
Lead Temperature MSOP, SOIC
(Soldering, 10 sec) ............................................ 300°C
PIN CONFIGURATION
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
–
8 V
+
7 OUT B
A
B
6 –IN B
5 +IN B
OUT A
–IN A
+IN A
V
–
1
2
3
4
TOP VIEW
8
7
6
5
V
+
OUT B
–IN B
+IN B
4
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 160°C/W, (Note 10)
EXPOSED PAD INTERNALLY CONNECTED TO V
–
.
(PCB CONNECTION OPTIONAL)
T
JMAX
= 150°C,
θ
JA
= 250°C/W, (Note 10)
TOP VIEW
OUT A 1
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
–
4
–
+
8
7
–
+
6
5
V
+
14 OUT D
13 –IN D
A
D
12 +IN D
11 V
–
B
C
10 +IN C
9
8
–IN C
OUT C
–IN A 2
+IN A 3
V
+
4
OUT B
–IN B
+IN B
+IN B 5
–IN B 6
OUT B 7
S8 PACKAGE
8-LEAD PLASTIC SO
S PACKAGE
14-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 190°C/W, (Note 10)
T
JMAX
= 150°C,
θ
JA
= 160°C/W, (Note 10)
ORDER INFORMATION
LEAD FREE FINISH
LT1801CDD#PBF
LT1801IDD#PBF
LT1801CMS8#PBF
LT1801IMS8#PBF
LT1801CS8#PBF
LT1801IS8#PBF
LT1802CS#PBF
LT1802IS#PBF
TAPE AND REEL
LT1801CDD#TRPBF
LT1801IDD#TRPBF
LT1801CMS8#TRPBF
LT1801IMS8#TRPBF
LT1801CS8#TRPBF
LT1801IS8#TRPBF
LT1802CS#TRPBF
LT1802IS#TRPBF
PART MARKING*
LAAM
LAAM
LTYR
LTYS
1801
1801I
LT1802CS
LT1802IS
PACKAGE DESCRIPTION
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic SO
8-Lead Plastic SO
14-Lead Plastic SO
14-Lead Plastic SO
OPERATING TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping
container.
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/
18012fc
2
LT1801/LT1802
ELECTRICAL CHARACTERISTICS
T
A
= 25°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 (MS8)
V
CM
= 0V (DD)
V
CM
= V
S
V
CM
= 0V to V
S
– 1.5V
V
CM
= 0V
V
CM
= 0V (MS8)
V
CM
= 0V (DD)
V
CM
= 1V
V
CM
= V
S
V
CM
= 1V
V
CM
= V
S
V
CM
= 1V
V
CM
= V
S
0.1Hz to 10Hz
f = 10kHz
f = 10kHz
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
35
3.5
30
85
78
79
72
0
V
S
= 2.5V to 10V, V
CM
= 0V
78
72
97
97
2.3
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
= 1V to 4V
V
S
= 5V, A
V
= 1, V
O
= 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
12.5
16
85
225
18
120
450
45
40
1.6
80
25
2
–75
250
0.35
0.4
2
2.5
60
200
500
60
250
800
MIN
TYP
75
140
175
0.5
20
100
150
280
25
500
25
25
25
25
1.4
8.5
1
2
85
8
85
105
97
105
97
V
S
MAX
350
500
800
3
185
650
900
1200
250
1500
350
500
200
200
UNITS
μV
μV
μV
mV
μV
μV
μV
μV
nA
nA
nA
nA
nA
nA
μV
P-P
nV/√Hz
pA/√Hz
pF
V/mV
V/mV
V/mV
dB
dB
dB
dB
V
dB
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
mA
MHz
V/μs
MHz
dBc
ns
%
Deg
18012fc
ΔV
OS
Input Offset Shift
Input Offset Voltage Match
(Channel-to-Channel) (Note 9)
I
B
Input Bias Current
Input Bias Current Match
(Channel-to-Channel) (Note 9)
I
OS
Input Offset Current
Input Noise Voltage
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C
IN
A
VOL
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
Large-Signal Voltage Gain
CMRR
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 9) V
S
= 5V, V
CM
= 0V to 3.5V
V
S
= 3V, V
CM
= 0V to 1.5V
Input Common Mode Range
PSRR
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
V
OL
Output Voltage Swing Low (Note 7)
PSRR Match (Channel-to-Channel) (Note 9) V
S
= 2.5V to 10V, V
CM
= 0V
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)
3
LT1801/LT1802
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
Input Offset Voltage
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.
CONDITIONS
V
CM
= 0V
V
CM
= 0V (MS8)
V
CM
= 0V (DD)
V
CM
= V
S
V
CM
= 0V to V
S
– 1.5V
V
CM
= 0V
V
CM
= 0V (MS8)
V
CM
= 0V (DD)
V
CM
= 1V
V
CM
= V
S
– 0.2V
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
l
l
l
l
l
l
l
l
l
l
l
MIN
TYP
125
140
290
0.6
30
200
200
275
1.5
50
550
25
25
25
25
MAX
500
650
950
3.5
275
850
1250
1500
5
300
2000
400
600
300
300
UNITS
μV
μV
μV
mV
μV
μV
μV
μV
μV/°C
nA
nA
nA
nA
nA
nA
V/mV
V/mV
V/mV
dB
dB
dB
dB
ΔV
OS
Input Offset Shift
Input Offset Voltage Match
(Channel-to-Channel) (Note 9)
V
OS
TC
I
B
Input Offset Voltage Drift (Note 8)
Input Bias Current
Input Bias Current Match
(Channel-to-Channel) (Note 9)
I
OS
A
VOL
Input Offset Current
Large-Signal Voltage Gain
25
2.5
20
82
74
76
68
0
74
68
75
6
75
101
93
101
93
V
S
91
91
2.3
18
100
300
25
150
600
2.5
80
225
600
80
300
950
CMRR
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 9) V
S
= 5V, V
CM
= 0V to 3.5V
V
S
= 3V, V
CM
= 0V to 1.5V
Input Common Mode Range
PSRR
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
V
OL
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
= 1V to 4V
V
S
= 2.5V to 10V, V
CM
= 0V
PSRR Match (Channel-to-Channel) (Note 9) V
S
= 2.5V to 10V, V
CM
= 0V
V
dB
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
l
l
l
l
l
l
l
l
l
l
l
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
15
35
11
40
30
2
75
22
2.8
mA
MHz
V/μs
18012fc
4
LT1801/LT1802
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
Input Offset Voltage
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. (Note 5)
CONDITIONS
V
CM
= 0V
V
CM
= 0V (MS8)
V
CM
= 0V (DD)
V
CM
= V
S
V
CM
= 0V to V
S
– 1.5V
V
CM
= 0V
V
CM
= 0V (MS8)
V
CM
= 0V (DD)
l
l
l
l
l
l
l
l
l
MIN
TYP
175
200
320
0.75
30
200
280
320
1.5
50
600
25
25
25
25
MAX
700
850
1150
4
300
1250
1600
1800
5
400
2250
450
700
350
350
UNITS
μV
μV
μV
mV
μV
μV
μV
μV
μV/°C
nA
nA
nA
nA
nA
nA
V/mV
V/mV
V/mV
dB
dB
dB
dB
ΔV
OS
Input Offset Shift
Input Offset Voltage Match
(Channel-to-Channel) (Note 9)
V
OS
TC
I
B
Input Offset Voltage Drift (Note 8)
Input Bias Current
V
CM
= V
S
– 0.2V
Input Bias Current Match
(Channel-to-Channel) (Note 9)
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
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
I
OS
A
VOL
Input Offset Current
Large-Signal Voltage Gain
20
2
17.5
81
73
75
67
0
73
67
65
6
65
101
93
101
93
V
S
90
90
2.3
15
105
170
25
150
300
2.5
90
250
400
90
350
700
CMRR
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 9) V
S
= 5V, V
CM
= 0V to 3.5V
V
S
= 3V, V
CM
= 0V to 1.5V
Input Common Mode Range
PSRR
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
V
OL
Output Voltage Swing Low (Note 7)
V
S
= 2.5V to 10V, V
CM
= 0V
V
CM
= V
O
= 0.5V
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
= 1V to 4V
PSRR Match (Channel-to-Channel) (Note 9) V
S
= 2.5V to 10V, V
CM
= 0V
V
dB
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
12.5
12.5
25
9
30
30
2.1
70
18
3
mA
MHz
V/μs
18012fc
5
嵌入式系统
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