LT1498/LT1499
10MHz, 6V/µs, Dual/Quad
Rail-to-Rail Input and Output
Precision C-Load Op Amps
FEATURES
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DESCRIPTION
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/µs 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.
Frequency Response
10
0
–10
– 20
– 30
GAIN (dB)
6.81k
100pF
5.23k
47pF
V
+
Rail-to-Rail Input and Output
475µV Max V
OS
from V
+
to V
–
Gain-Bandwidth Product: 10MHz
Slew Rate: 6V/µs
Low Supply Current per Amplifier: 1.7mA
Input Offset Current: 50nA Max
Input Bias Current: 500nA Max
Open-Loop Gain: 1000V/mV Min
Low Input Noise Voltage: 12nV/√Hz Typ
Wide Supply Range: 2.2V to
±15V
Large Output Drive Current: 30mA
Stable for Capacitive Loads Up to 10,000pF
Dual in 8-Pin PDIP and SO Package
Quad in Narrow 14-Pin SO
APPLICATIONS
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Driving A-to-D Converters
Active Filters
Rail-to-Rail Buffer Amplifiers
Low Voltage Signal Processing
Battery-Powered Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
Single Supply 100kHz 4th Order Butterworth Filter
V
IN
330pF
1/2 LT1498
1000pF
V
+
/2
+
–
+
–
6.81k
11.3k
5.23k
10.2k
1/2 LT1498
V
OUT
–100
1498 TA01
–110
100
U
U
U
V
IN
= 2.7V
P-P
V
+
= 3V
– 40
– 50
– 60
–70
– 80
– 90
1k
100k
10k
FREQUENCY (Hz)
1M
10M
1498 TA02
1
LT1498/LT1499
ABSOLUTE
MAXIMUM
RATINGS
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
PACKAGE/ORDER INFORMATION
TOP VIEW
OUT A 1
– IN A 2
+ IN A 3
V
–
4
N8 PACKAGE
8-LEAD PDIP
A
B
ORDER PART
NUMBER
8
7
6
5
V
+
OUT B
– IN B
+ IN B
LT1498CN8
LT1498CS8
S8 PART MARKING
1498
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C,
θ
JA
= 190°C/ W (S8)
Consult factory for Military and Industrial grade parts.
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
∆V
OS
I
B
∆I
B
Input Offset Voltage
Input Offset Voltage Shift
Input Bias Current
Input Bias Current Shift
Input Bias Current Match (Channel-to-Channel)
I
OS
∆I
OS
e
n
i
n
C
IN
A
VOL
Input Offset Current
Input Offset Current Shift
Input Noise Voltage
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
Large-Signal Voltage Gain
V
S
= 5V, V
O
= 75mV to 4.8V, R
L
= 10k
V
S
= 3V, V
O
= 75mV to 2.8V, R
L
= 10k
600
500
CONDITIONS
V
CM
= V
+
V
CM
= V
–
V
CM
= V
–
to V
+
V
CM
= V
+
V
CM
= V
–
V
CM
= V
–
to V
+
V
CM
= V
+
(Note 4)
V
CM
= V
–
(Note 4)
V
CM
= V
+
V
CM
= V
–
V
CM
= V
–
to V
+
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
0
– 100
0
– 500
MIN
TYP
150
150
150
200
250
– 250
500
10
– 10
5
5
10
400
12
0.3
5
3800
2000
MAX
475
475
425
750
500
0
1000
100
0
50
50
100
UNITS
µV
µV
µV
µV
nA
nA
nA
nA
nA
nA
nA
nA
nV
P-P
nV/√Hz
pA/√Hz
pF
V/mV
V/mV
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
+
, V
–
(Note 4)
2
U
U
W
W W
U
W
TOP VIEW
OUTA 1
– IN A 2
+ IN A 3
V
+
4
+ IN B 5
– IN B 6
OUT B 7
B
C
A
D
14 OUT D
13 – IN D
12 + IN D
11 V
–
10 + IN C
9
8
– IN C
OUT C
ORDER PART
NUMBER
LT1499CS
S PACKAGE
14-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 150°C/ W
LT1498/LT1499
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
CMRR
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 4)
PSRR
V
OL
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 4)
Output Voltage Swing (Low) (Note 5)
CONDITIONS
V
S
= 5V, V
CM
= V
–
to V
+
V
S
= 3V, V
CM
= V
–
to V
+
V
S
= 5V, V
CM
= V
–
to V
+
V
S
= 3V, V
CM
= V
–
to V
+
V
S
= 2.2V to 12V, V
CM
= V
O
= 0.5V
V
S
= 2.2V to 12V, V
CM
= V
O
= 0.5V
No Load
I
SINK
= 0.5mA
I
SINK
= 2.5mA
No Load
I
SOURCE
= 0.5mA
I
SOURCE
= 2.5mA
V
S
= 5V
V
S
= 3V
±12.5
±12.0
6.8
V
S
= 5V, A
V
= – 1, R
L
= Open, V
O
= 4V
V
S
= 3V, A
V
= – 1, R
L
= Open
2.6
2.3
MIN
81
76
75
70
88
82
TYP
90
86
91
86
105
103
14
35
90
2.5
50
140
±24
±19
1.7
10.5
4.5
4.0
2.2
30
70
200
10
100
250
MAX
UNITS
dB
dB
dB
dB
dB
dB
mV
mV
mV
mV
mV
mV
mA
mA
mA
MHz
V/µs
V/µs
V
OH
Output Voltage Swing (High) (Note 5)
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amplifier
Gain-Bandwidth Product (Note 6)
Slew Rate (Note 7)
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
V
OS
TC
∆V
OS
I
B
∆I
B
Input Offset Voltage
Input Offset Voltage Drift (Note 2)
V
CM
=
Input Offset Voltage Shift
V
+
V
CM
= V
–
+ 0.1V to V
+
CONDITIONS
V
CM
= V
+
V
CM
= V
–
+ 0.1V
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
175
0.5
1.5
170
200
MAX
650
650
2.5
4.0
600
900
600
0
1200
170
0
85
85
170
UNITS
µV
µV
µV/°C
µV/°C
µV
µV
nA
nA
nA
nA
nA
nA
nA
nA
V/mV
V/mV
dB
dB
dB
dB
dB
dB
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
–
+ 0.1V, V
+
(Note 4)
Input Bias Current
V
CM
= V
+
V
CM
= V
–
+ 0.1V
Input Bias Current Shift
Input Bias Current Match (Channel-to-Channel)
V
CM
= V
–
+ 0.1V to V
+
V
CM
= V
+
(Note 4)
V
CM
= V
–
+ 0.1V (Note 4)
V
CM
= V
+
V
CM
= V
–
+ 0.1V
V
CM
= V
–
+ 0.1V to V
+
V
S
= 5V, V
O
= 75mV to 4.8V, R
L
= 10k
V
S
= 3V, V
O
= 75mV to 2.8V, R
L
= 10k
V
S
= 5V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 3V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 5V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 3V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 2.3V to 12V, V
CM
= V
O
= 0.5V
V
S
= 2.3V to 12V, V
CM
= V
O
= 0.5V
0
– 600
0
– 170
275
– 275
550
15
– 15
10
10
20
I
OS
∆I
OS
A
VOL
CMRR
Input Offset Current
Input Offset Current Shift
Large-Signal Voltage Gain
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 4)
500
400
78
73
74
69
86
80
2500
2000
89
85
90
86
102
102
PSRR
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 4)
3
LT1498/LT1499
ELECTRICAL CHARACTERISTICS
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
OL
Output Voltage Swing (Low) (Note 5)
CONDITIONS
No Load
I
SINK
= 0.5mA
I
SINK
= 2.5mA
No Load
I
SOURCE
= 0.5mA
I
SOURCE
= 2.5mA
V
S
= 5V
V
S
= 3V
q
q
q
q
q
q
q
q
q
q
MIN
TYP
17
40
110
3.5
55
160
MAX
35
80
220
15
120
300
UNITS
mV
mV
mV
mV
mV
mV
mA
mA
V
OH
Output Voltage Swing (High) (Note 5)
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amplifier
Gain-Bandwidth Product (Note 6)
Slew Rate (Note 7)
±12
±10
6.1
2.5
2.2
±
23
±20
1.9
9
4.0
3.5
2.6
mA
MHz
V/µs
V/µs
V
S
= 5V, A
V
= –1, R
L
= Open, V
O
= 4V
V
S
= 3V, A
V
= –1, R
L
= Open
q
q
– 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
V
OS
V
OS
TC
∆V
OS
I
B
∆I
B
Input Offset Voltage
Input Offset Voltage Drift (Note 2)
V
CM
= V
+
Input Offset Voltage Shift
Input Bias Current
Input Bias Current Shift
Input Bias Current Match (Channel-to-Channel)
I
OS
∆I
OS
A
VOL
CMRR
Input Offset Current
Input Offset Current Shift
Large-Signal Voltage Gain
Common Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 4)
PSRR
V
OL
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 4)
Output Voltage Swing (Low) (Note 5)
V
CM
= V
–
+ 0.1V to V
+
V
CM
=
V
CM
= V
–
+ 0.1V
V
CM
= V
–
+ 0.1V to V
+
V
CM
= V
+
(Note 4)
V
CM
= V
–
+ 0.1V (Note 4)
V
CM
= V
+
V
CM
= V
–
+ 0.1V
V
CM
= V
–
+ 0.1V to V
+
V
S
= 5V, V
O
= 75mV to 4.8V, R
L
= 10k
V
S
= 3V, V
O
= 75mV to 2.8V, R
L
= 10k
V
S
= 5V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 3V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 5V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 3V, V
CM
= V
–
+ 0.1V to V
+
V
S
= 2.5V to 12V, V
CM
= V
O
= 0.5V
V
S
= 2.5V to 12V, V
CM
= V
O
= 0.5V
No Load
I
SINK
= 0.5mA
I
SINK
= 2.5mA
No Load
I
SOURCE
= 0.5mA
I
SOURCE
= 2.5mA
V
+
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
–
+ 0.1V, V
+
(Note 4)
CONDITIONS
V
CM
= V
+
V
CM
= V
–
+ 0.1V
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
250
250
0.5
1.5
250
300
MAX
750
750
2.5
4.0
650
1500
750
0
1500
180
0
90
90
180
UNITS
µV
µV
µV/°C
µV/°C
µV
µV
nA
nA
nA
nA
nA
nA
nA
nA
V/mV
V/mV
dB
dB
dB
dB
dB
dB
0
– 750
0
– 180
350
– 350
700
30
– 30
15
15
30
400
300
77
73
72
69
86
80
2500
2000
86
81
86
83
100
100
18
45
110
3.5
60
170
40
80
220
15
120
300
mV
mV
mV
mV
mV
mV
V
OH
Output Voltage Swing (High) (Note 5)
4
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
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amplifier
Gain-Bandwidth Product (Note 6)
Slew Rate (Note 7)
V
S
= 5V, A
V
= –1, R
L
= Open, V
O
= 4V
V
S
= 3V, A
V
= –1, R
L
= Open
CONDITIONS
V
S
= 5V
V
S
= 3V
q
q
q
q
q
q
MIN
±7.5
±7.5
5.8
2.2
1.9
TYP
±15
±15
2.0
8.5
3.6
3.2
MAX
UNITS
mA
mA
2.7
mA
MHz
V/µs
V/µs
T
A
= 25°C, V
S
=
±15V,
V
CM
= 0V, V
OUT
= 0V, unless otherwise noted.
SYMBOL PARAMETER
V
OS
∆V
OS
I
B
∆I
B
Input Offset Voltage
Input Offset Voltage Shift
Input Bias Current
Input Bias Current Shift
Input Bias Current Match (Channel-to-Channel)
I
OS
∆I
OS
e
n
i
n
A
VOL
Input Offset Current
Input Offset Current Shift
Input Noise Voltage
Input Noise Voltage Density
Input Noise Current Density
Large-Signal Voltage Gain
Channel Separation
CMRR
PSRR
V
OL
Common-Mode Rejection Ratio
CMRR Match (Channel-to-Channel) (Note 4)
Power Supply Rejection Ratio
PSRR Match (Channel-to-Channel) (Note 4)
Output Voltage Swing (Low) (Note 5)
CONDITIONS
V
CM
= V
+
V
CM
= V
–
V
CM
= V
–
to V
+
V
CM
= V
+
V
CM
= V
–
V
CM
= V
–
to V
+
V
CM
= V
+
(Note 4)
V
CM
= V
–
(Note 4)
V
CM
= V
+
V
CM
= V
–
V
CM
= V
–
to V
+
0.1Hz to 10Hz
f = 1kHz
f = 1kHz
V
O
= – 14.5V to 14.5V, R
L
= 10k
V
O
= – 10V to 10V, R
L
= 2k
V
O
= – 10V to 10V, R
L
= 2k
V
CM
= V
–
to V
+
V
CM
= V
–
to V
+
V
S
=
±5V
to
±15V
V
S
=
±5V
to
±15V
No Load
I
SINK
= 0.5mA
I
SINK
= 10mA
No Load
I
SINK
= 0.5mA
I
SINK
= 10mA
±15
6.8
A
V
= – 1, R
L
= Open, V
O
=
±10V
Measure at V
O
=
±5V
3.5
1000
500
116
93
87
89
83
0
– 120
0
– 550
MIN
TYP
200
200
150
250
250
– 250
500
12
– 12
6
6
12
400
12
0.3
5200
2300
130
106
103
110
105
18
40
230
2.5
55
420
±30
1.8
10.5
6
2.5
30
80
500
10
120
800
MAX
800
800
650
1400
550
0
1100
120
0
60
60
120
UNITS
µV
µV
µV
µV
nA
nA
nA
nA
nA
nA
nA
nA
nV
P-P
nV/√Hz
pA/√Hz
V/mV
V/mV
dB
dB
dB
dB
dB
mV
mV
mV
mV
mV
mV
mA
mA
MHz
V/µs
Input Offset Voltage Match (Channel-to-Channel) V
CM
= V
+
, V
–
(Note 4)
V
OH
Output Voltage Swing (High) (Note 5)
I
SC
I
S
GBW
SR
Short-Circuit Current
Supply Current per Amplifier
Gain-Bandwidth Product (Note 6)
Slew Rate
5
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