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Электронный компонент: LT1498CS8

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1
LT1498/LT1499
10MHz, 6V/
s, Dual/Quad
Rail-to-Rail Input and Output
Precision C-Load Op Amps
FEATURES
s
Rail-to-Rail Input and Output
s
475
V Max V
OS
from V
+
to V
s
Gain-Bandwidth Product: 10MHz
s
Slew Rate: 6V/
s
s
Low Supply Current per Amplifier: 1.7mA
s
Input Offset Current: 50nA Max
s
Input Bias Current: 500nA Max
s
Open-Loop Gain: 1000V/mV Min
s
Low Input Noise Voltage: 12nV/
Hz Typ
s
Wide Supply Range: 2.2V to
15V
s
Large Output Drive Current: 30mA
s
Stable for Capacitive Loads Up to 10,000pF
s
Dual in 8-Pin PDIP and SO Package
s
Quad in Narrow 14-Pin SO
DESCRIPTIO
N
U
The LT
1498/LT1499 are dual/quad, rail-to-rail input and
output precision C-Load
TM
op amps with a 10MHz gain-
bandwidth product and a 6V/
s slew rate.
The LT1498/LT1499 are designed to maximize input
dynamic range by delivering precision performance over
the full supply voltage. Using a patented technique, both
input stages of the LT1498/LT1499 are trimmed, one at the
negative supply and the other at the positive supply. The
resulting guaranteed common mode rejection is much
better than other rail-to-rail input op amps. When used as a
unity-gain buffer in front of single supply 12-bit A-to-D
converters, the LT1498/LT1499 are guaranteed to add less
than 1LSB of error even in single 3V supply systems.
With 110dB of supply rejection, the LT1498/LT1499 main-
tain their performance over a supply range of 2.2V to 36V
and are specified for 3V, 5V and
15V supplies. The inputs
can be driven beyond the supplies without damage or
phase reversal of the output. These op amps remain stable
while driving capacitive loads up to 10,000pF.
The LT1498 is available with the standard dual op amp
configuration in 8-pin PDIP and SO packaging. The LT1499
features the standard quad op amp configuration and is
available in a 14-pin plastic SO package. These devices can
be used as plug-in replacements for many standard op
amps to improve input/output range and precision.
TYPICAL APPLICATIO
N
U
Frequency Response
FREQUENCY (Hz)
100
GAIN (dB)
50
30
10
10
1M
1498 TA02
70
90
60
40
20
0
80
100
110
1k
10k
100k
10M
V
IN
= 2.7V
P-P
V
+
= 3V
+
1/2 LT1498
6.81k
V
IN
V
+
/2
V
+
V
OUT
1498 TA01
330pF
11.3k
6.81k
+
1/2 LT1498
5.23k
47pF
1000pF
10.2k
5.23k
100pF
Single Supply 100kHz 4th Order Butterworth Filter
APPLICATIO
N
S
U
s
Driving A-to-D Converters
s
Active Filters
s
Rail-to-Rail Buffer Amplifiers
s
Low Voltage Signal Processing
s
Battery-Powered Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation.
2
LT1498/LT1499
ABSOLUTE
M
AXI
M
U
M
RATINGS
W
W
W
U
Total Supply Voltage (V
+
to V
) ............................. 36V
Input Current .....................................................
10mA
Output Short-Circuit Duration (Note 1) ........ Continuous
Operating Temperature Range ............... 40
C to 85
C
Specified Temperature Range (Note 3) .... 40
C to 85
C
Junction Temperature .......................................... 150
C
Storage Temperature Range ................. 65
C to 150
C
Lead Temperature (Soldering, 10 sec) .................. 300
C
ELECTRICAL CHARACTERISTICS
Consult factory for Military and Industrial grade parts.
PACKAGE/ORDER I
N
FOR
M
ATIO
N
W
U
U
ORDER PART
NUMBER
LT1498CN8
LT1498CS8
ORDER PART
NUMBER
TOP VIEW
S PACKAGE
14-LEAD PLASTIC SO
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OUTA
IN A
+ IN A
V
+
+ IN B
IN B
OUT B
OUT D
IN D
+ IN D
V
+ IN C
IN C
OUT C
A
D
B
C
T
JMAX
= 150
C,
JA
= 150
C/ W
T
JMAX
= 150
C,
JA
= 130
C/ W (N8)
T
JMAX
= 150
C,
JA
= 190
C/ W (S8)
1
2
3
4
8
7
6
5
TOP VIEW
OUT A
IN A
+ IN A
V
V
+
OUT B
IN B
+ IN B
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
A
B
LT1499CS
T
A
= 25
C, V
S
= 5V,0V; V
S
= 3V,0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
150
475
V
V
CM
= V
150
475
V
V
OS
Input Offset Voltage Shift
V
CM
= V
to V
+
150
425
V
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
+
, V
(Note 4)
200
750
V
I
B
Input Bias Current
V
CM
= V
+
0
250
500
nA
V
CM
= V
500
250
0
nA
I
B
Input Bias Current Shift
V
CM
= V
to V
+
500
1000
nA
Input Bias Current Match (Channel-to-Channel)
V
CM
= V
+
(Note 4)
0
10
100
nA
V
CM
= V
(Note 4)
100
10
0
nA
I
OS
Input Offset Current
V
CM
= V
+
5
50
nA
V
CM
= V
5
50
nA
I
OS
Input Offset Current Shift
V
CM
= V
to V
+
10
100
nA
Input Noise Voltage
0.1Hz to 10Hz
400
nV
P-P
e
n
Input Noise Voltage Density
f = 1kHz
12
nV/
Hz
i
n
Input Noise Current Density
f = 1kHz
0.3
pA/
Hz
C
IN
Input Capacitance
5
pF
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 75mV to 4.8V, R
L
= 10k
600
3800
V/mV
V
S
= 3V, V
O
= 75mV to 2.8V, R
L
= 10k
500
2000
V/mV
S8 PART MARKING
1498
3
LT1498/LT1499
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
q
175
650
V
V
CM
= V
+ 0.1V
q
175
650
V
V
OS
TC
Input Offset Voltage Drift (Note 2)
q
0.5
2.5
V/
C
V
CM
= V
+
q
1.5
4.0
V/
C
V
OS
Input Offset Voltage Shift
V
CM
= V
+ 0.1V to V
+
q
170
600
V
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
+ 0.1V, V
+
(Note 4)
q
200
900
V
I
B
Input Bias Current
V
CM
= V
+
q
0
275
600
nA
V
CM
= V
+ 0.1V
q
600
275
0
nA
I
B
Input Bias Current Shift
V
CM
= V
+ 0.1V to V
+
q
550
1200
nA
Input Bias Current Match (Channel-to-Channel)
V
CM
= V
+
(Note 4)
q
0
15
170
nA
V
CM
= V
+ 0.1V (Note 4)
q
170
15
0
nA
I
OS
Input Offset Current
V
CM
= V
+
q
10
85
nA
V
CM
= V
+ 0.1V
q
10
85
nA
I
OS
Input Offset Current Shift
V
CM
= V
+ 0.1V to V
+
q
20
170
nA
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 75mV to 4.8V, R
L
= 10k
q
500
2500
V/mV
V
S
= 3V, V
O
= 75mV to 2.8V, R
L
= 10k
q
400
2000
V/mV
CMRR
Common Mode Rejection Ratio
V
S
= 5V, V
CM
= V
+ 0.1V to V
+
q
78
89
dB
V
S
= 3V, V
CM
= V
+ 0.1V to V
+
q
73
85
dB
CMRR Match (Channel-to-Channel) (Note 4)
V
S
= 5V, V
CM
= V
+ 0.1V to V
+
q
74
90
dB
V
S
= 3V, V
CM
= V
+ 0.1V to V
+
q
69
86
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.3V to 12V, V
CM
= V
O
= 0.5V
q
86
102
dB
PSRR Match (Channel-to-Channel) (Note 4)
V
S
= 2.3V to 12V, V
CM
= V
O
= 0.5V
q
80
102
dB
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
CONDITIONS
MIN
TYP
MAX
UNITS
CMRR
Common Mode Rejection Ratio
V
S
= 5V, V
CM
= V
to V
+
81
90
dB
V
S
= 3V, V
CM
= V
to V
+
76
86
dB
CMRR Match (Channel-to-Channel) (Note 4)
V
S
= 5V, V
CM
= V
to V
+
75
91
dB
V
S
= 3V, V
CM
= V
to V
+
70
86
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.2V to 12V, V
CM
= V
O
= 0.5V
88
105
dB
PSRR Match (Channel-to-Channel) (Note 4)
V
S
= 2.2V to 12V, V
CM
= V
O
= 0.5V
82
103
dB
V
OL
Output Voltage Swing (Low) (Note 5)
No Load
14
30
mV
I
SINK
= 0.5mA
35
70
mV
I
SINK
= 2.5mA
90
200
mV
V
OH
Output Voltage Swing (High) (Note 5)
No Load
2.5
10
mV
I
SOURCE
= 0.5mA
50
100
mV
I
SOURCE
= 2.5mA
140
250
mV
I
SC
Short-Circuit Current
V
S
= 5V
12.5
24
mA
V
S
= 3V
12.0
19
mA
I
S
Supply Current per Amplifier
1.7
2.2
mA
GBW
Gain-Bandwidth Product (Note 6)
6.8
10.5
MHz
SR
Slew Rate (Note 7)
V
S
= 5V, A
V
= 1, R
L
= Open, V
O
= 4V
2.6
4.5
V/
s
V
S
= 3V, A
V
= 1, R
L
= Open
2.3
4.0
V/
s
0
C < T
A
< 70
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
4
LT1498/LT1499
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OL
Output Voltage Swing (Low) (Note 5)
No Load
q
17
35
mV
I
SINK
= 0.5mA
q
40
80
mV
I
SINK
= 2.5mA
q
110
220
mV
V
OH
Output Voltage Swing (High) (Note 5)
No Load
q
3.5
15
mV
I
SOURCE
= 0.5mA
q
55
120
mV
I
SOURCE
= 2.5mA
q
160
300
mV
I
SC
Short-Circuit Current
V
S
= 5V
q
12
23
mA
V
S
= 3V
q
10
20
mA
I
S
Supply Current per Amplifier
q
1.9
2.6
mA
GBW
Gain-Bandwidth Product (Note 6)
q
6.1
9
MHz
SR
Slew Rate (Note 7)
V
S
= 5V, A
V
= 1, R
L
= Open, V
O
= 4V
q
2.5
4.0
V/
s
V
S
= 3V, A
V
= 1, R
L
= Open
q
2.2
3.5
V/
s
0
C < T
A
< 70
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted.
40
C < T
A
< 85
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
q
250
750
V
V
CM
= V
+ 0.1V
q
250
750
V
V
OS
TC
Input Offset Voltage Drift (Note 2)
q
0.5
2.5
V/
C
V
CM
= V
+
q
1.5
4.0
V/
C
V
OS
Input Offset Voltage Shift
V
CM
= V
+ 0.1V to V
+
q
250
650
V
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
+ 0.1V, V
+
(Note 4)
q
300
1500
V
I
B
Input Bias Current
V
CM
= V
+
q
0
350
750
nA
V
CM
= V
+ 0.1V
q
750
350
0
nA
I
B
Input Bias Current Shift
V
CM
= V
+ 0.1V to V
+
q
700
1500
nA
Input Bias Current Match (Channel-to-Channel)
V
CM
= V
+
(Note 4)
q
0
30
180
nA
V
CM
= V
+ 0.1V (Note 4)
q
180
30
0
nA
I
OS
Input Offset Current
V
CM
= V
+
q
15
90
nA
V
CM
= V
+ 0.1V
q
15
90
nA
I
OS
Input Offset Current Shift
V
CM
= V
+ 0.1V to V
+
q
30
180
nA
A
VOL
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 75mV to 4.8V, R
L
= 10k
q
400
2500
V/mV
V
S
= 3V, V
O
= 75mV to 2.8V, R
L
= 10k
q
300
2000
V/mV
CMRR
Common Mode Rejection Ratio
V
S
= 5V, V
CM
= V
+ 0.1V to V
+
q
77
86
dB
V
S
= 3V, V
CM
= V
+ 0.1V to V
+
q
73
81
dB
CMRR Match (Channel-to-Channel) (Note 4)
V
S
= 5V, V
CM
= V
+ 0.1V to V
+
q
72
86
dB
V
S
= 3V, V
CM
= V
+ 0.1V to V
+
q
69
83
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.5V to 12V, V
CM
= V
O
= 0.5V
q
86
100
dB
PSRR Match (Channel-to-Channel) (Note 4)
V
S
= 2.5V to 12V, V
CM
= V
O
= 0.5V
q
80
100
dB
V
OL
Output Voltage Swing (Low) (Note 5)
No Load
q
18
40
mV
I
SINK
= 0.5mA
q
45
80
mV
I
SINK
= 2.5mA
q
110
220
mV
V
OH
Output Voltage Swing (High) (Note 5)
No Load
q
3.5
15
mV
I
SOURCE
= 0.5mA
q
60
120
mV
I
SOURCE
= 2.5mA
q
170
300
mV
5
LT1498/LT1499
ELECTRICAL CHARACTERISTICS
40
C < T
A
< 85
C, V
S
= 5V, 0V; V
S
= 3V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
SC
Short-Circuit Current
V
S
= 5V
q
7.5
15
mA
V
S
= 3V
q
7.5
15
mA
I
S
Supply Current per Amplifier
q
2.0
2.7
mA
GBW
Gain-Bandwidth Product (Note 6)
q
5.8
8.5
MHz
SR
Slew Rate (Note 7)
V
S
= 5V, A
V
= 1, R
L
= Open, V
O
= 4V
q
2.2
3.6
V/
s
V
S
= 3V, A
V
= 1, R
L
= Open
q
1.9
3.2
V/
s
T
A
= 25
C, V
S
=
15V, V
CM
= 0V, V
OUT
= 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
V
CM
= V
+
200
800
V
V
CM
= V
200
800
V
V
OS
Input Offset Voltage Shift
V
CM
= V
to V
+
150
650
V
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
+
, V
(Note 4)
250
1400
V
I
B
Input Bias Current
V
CM
= V
+
0
250
550
nA
V
CM
= V
550
250
0
nA
I
B
Input Bias Current Shift
V
CM
= V
to V
+
500
1100
nA
Input Bias Current Match (Channel-to-Channel)
V
CM
= V
+
(Note 4)
0
12
120
nA
V
CM
= V
(Note 4)
120
12
0
nA
I
OS
Input Offset Current
V
CM
= V
+
6
60
nA
V
CM
= V
6
60
nA
I
OS
Input Offset Current Shift
V
CM
= V
to V
+
12
120
nA
Input Noise Voltage
0.1Hz to 10Hz
400
nV
P-P
e
n
Input Noise Voltage Density
f = 1kHz
12
nV/
Hz
i
n
Input Noise Current Density
f = 1kHz
0.3
pA/
Hz
A
VOL
Large-Signal Voltage Gain
V
O
= 14.5V to 14.5V, R
L
= 10k
1000
5200
V/mV
V
O
= 10V to 10V, R
L
= 2k
500
2300
V/mV
Channel Separation
V
O
= 10V to 10V, R
L
= 2k
116
130
dB
CMRR
Common-Mode Rejection Ratio
V
CM
= V
to V
+
93
106
dB
CMRR Match (Channel-to-Channel) (Note 4)
V
CM
= V
to V
+
87
103
dB
PSRR
Power Supply Rejection Ratio
V
S
=
5V to
15V
89
110
dB
PSRR Match (Channel-to-Channel) (Note 4)
V
S
=
5V to
15V
83
105
dB
V
OL
Output Voltage Swing (Low) (Note 5)
No Load
18
30
mV
I
SINK
= 0.5mA
40
80
mV
I
SINK
= 10mA
230
500
mV
V
OH
Output Voltage Swing (High) (Note 5)
No Load
2.5
10
mV
I
SINK
= 0.5mA
55
120
mV
I
SINK
= 10mA
420
800
mV
I
SC
Short-Circuit Current
15
30
mA
I
S
Supply Current per Amplifier
1.8
2.5
mA
GBW
Gain-Bandwidth Product (Note 6)
6.8
10.5
MHz
SR
Slew Rate
A
V
= 1, R
L
= Open, V
O
=
10V
3.5
6
V/
s
Measure at V
O
=
5V