FEATURES
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LT1801/LT1802
Dual/Quad 80MHz, 25V/µs
Low Power Rail-to-Rail Input and
Output Precision Op Amps
DESCRIPTIO
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 fea-
ture 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 sup-
plies 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 im-
prove 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
APPLICATIO S
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Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
Active Filters
Video Line Driver
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
909Ω
909Ω
V
IN
220pF
2.67k
47pF
3V, 1MHz, 4th Order Butterworth Filter
GAIN (dB)
1.1k
22pF
3V
1/2 LT1801
470pF
V
S
/2
18012 TA01
+
–
1.1k
2.21k
1/2 LT1801
V
OUT
U
U
+
–
U
–40
–60
–80
–100
–120
1k
10k
100k
1M
FREQUENCY (Hz)
10M
100M
18012 TA02
18012fb
1
LT1801/LT1802
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
Specified Temperature Range (Note 5) ... – 40°C to 85°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
–
4
A
B
8 V
+
7 OUT B
6 –IN B
5 +IN B
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 160°C/ W, (Note 10)
EXPOSED PAD INTERNALLY CONNECTED TO V
–
.
(PCB CONNECTION OPTIONAL)
ORDER PART
NUMBER
LT1801CDD
LT1801IDD
DD PART
MARKING
LAAM*
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
–
4
–
+
8
7
–
+
6
5
V
+
OUT B
–IN B
+IN B
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 190°C/ W, (Note 10)
ORDER PART
NUMBER
LT1801CS8
LT1801IS8
S8 PART
MARKING
1801
1801I
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
2
U
U
W
W W
U
W
(Note 1)
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 (Soldering, 10 sec).................. 300°C
TOP VIEW
OUT A
–IN A
+IN A
V
–
1
2
3
4
8
7
6
5
V
+
OUT B
–IN B
+IN B
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 250°C/ W, (Note 10)
ORDER PART
NUMBER
LT1801CMS8
LT1801IMS8
TOP VIEW
OUT A 1
–IN A 2
+IN A 3
V
+
4
+IN B 5
–IN B 6
OUT B 7
B
C
A
D
MS8 PART
MARKING
LTYR
LTYS
14 OUT D
13 –IN D
12 +IN D
11 V
–
10 +IN C
9
8
–IN C
OUT C
S PACKAGE
14-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 160°C/ W, (Note 10)
ORDER PART
NUMBER
LT1802CS
LT1802IS
18012fb
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 PARAMETER
V
OS
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
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
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
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
35
3.5
30
85
78
79
72
0
78
72
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
97
97
2.3
16
85
225
18
120
450
45
40
1.6
80
25
2
–75
250
0.35
0.4
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
∆V
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
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
CMRR Match (Channel-to-Channel) (Note 9)
Input Common Mode Range
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 9)
Minimum Supply Voltage (Note 6)
Output Voltage Swing Low (Note 7)
PSRR
V
OL
V
OH
Output Voltage Swing High (Note 7)
2.5
60
200
500
60
250
800
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
12.5
2
18012fb
3
LT1801/LT1802
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
Input Offset Voltage
The
●
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
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
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
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
∆V
OS
Input Offset Shift
Input Offset Voltage Match
(Channel-to-Channel) (Note 9)
Input Offset Voltage Drift (Note 8)
Input Bias Current
Input Bias Current Match
(Channel-to-Channel) (Note 9)
Input Offset Current
Large-Signal Voltage Gain
V
OS
TC
I
B
I
OS
A
VOL
CMRR
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 9)
Input Common Mode Range
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 9)
Minimum Supply Voltage (Note 6)
Output Voltage Swing Low (Note 7)
PSRR
25
2.5
20
82
74
76
68
0
74
68
TYP
125
140
290
0.6
30
200
200
275
1.5
50
550
25
25
25
25
75
6
75
101
93
101
93
91
91
2.3
18
100
300
25
150
600
40
30
2
75
22
MAX
500
650
950
3.5
275
850
1250
1500
5
300
2000
400
600
300
300
V
S
V
OL
V
OH
Output Voltage Swing High (Note 7)
2.5
80
225
600
80
300
950
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amplifier
Gain Bandwidth Product
Slew Rate
20
15
35
11
2.8
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
V
dB
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
mA
MHz
V/µs
18012fb
4
LT1801/LT1802
The
●
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)
SYMBOL PARAMETER
V
OS
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)
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
ELECTRICAL CHARACTERISTICS
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
∆V
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
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
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
= 4V
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)
Input Common Mode Range
V
dB
dB
V
mV
mV
mV
mV
mV
mV
mA
mA
PSRR
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 9)
Minimum Supply Voltage (Note 6)
V
OL
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
25
9
30
30
2.1
70
18
3
mA
MHz
V/µs
18012fb
5
嵌入式系统
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