1
LT1492/LT1493
5MHz, 3V/
s, Low Power
Single Supply, Dual and Quad
Precision Op Amps
DESCRIPTIO
N
U
The LT
1492/LT1493 are dual/quad, low power, single sup-
ply precision op amps with 5MHz gain-bandwidth product,
3V/
s slew rate and only 450
A of quiescent supply current
per amplifier.
With a maximum input offset voltage of only 180
V, the
LT1492/LT1493 eliminate trims in most systems while pro-
viding high frequency performance not usually found in low
power single supply amplifiers.
The LT1492/LT1493 will operate on any supply greater than
2.5V and less than 36V total, and are specified on single 3.3V,
single 5V and
15V supplies. Even with their low quiescent
supply current the minimum output drive is 20mA, ideal for
driving low impedance loads.
The inputs can be driven beyond the supplies without
damage or phase reversal of the output. The low operating
voltage and wide input and output range make the LT1492/
LT1493 amplifiers ideal for battery-powered applications.
For applications requiring faster precision single supply
amplifiers, see the 14MHz, 7V/
s LT1211/LT1212, the
28MHz, 12V/
s LT1213/LT1214 or the 23MHz, 50V/
s
LT1215/LT1216.
TYPICAL APPLICATIO
N
U
FEATURES
s
Battery-Powered Systems
Portable Instrumentation
s
Active Filters
s
Photodiode Amplifiers
s
DAC Current to Voltage Amplifiers
APPLICATIO
N
S
U
s
Gain-Bandwidth Product: 5MHz Typ
s
Slew Rate: 3V/
s Typ
s
Low Supply Current per Amplifier: 0.55mA Max
s
Input Offset Voltage: 180
V Max
s
Input Offset Voltage Drift: 3
V/
C Max
s
Input Offset Current: 20nA Max
s
Input Bias Current: 100nA Max
s
Open-Loop Gain: 1500V/mV Min (V
S
=
15V)
s
Low Input Noise Voltage: 16.5nV/
Hz
s
Low Input Noise Current: 0.14pA/
Hz
s
Large Output Drive Current: 20mA Min
s
Single Supply Operation
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
s
Wide Supply Voltage Range: 2.5V to 36V
s
Specified on 3.3V, 5V and
15V
s
Dual in 8-Pin PDIP and SO Package
s
Quad in a Narrow 16-Pin SO Package
, LTC and LT are registered trademarks of Linear Technology Corporation.
Precision AC to DC Converter (Full Wave Rectifier and Filter)
+
+
V
IN
V
S
= 5V, 0V
< 1% ERROR FROM 100mV TO 1V, f = 1kHz
10% ERROR AT 10mV, f = 1kHz
1% ERROR AT 5kHz, V
IN
= 100mV
RMS
10% ERROR AT 30kHz, V
IN
= 100mV
RMS
1/2 LT1492
+
1/2 LT1492
5V
10k
10k
10k
4.99k
15k
6.49k
10
F
V
OUT
DC
1492/93 TA01
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (
V/
C)
2.5
PERCENT OF UNITS (%)
30
40
50
1.5
1492/93 G02
20
10
0
1.5
0.5
0.5
2
2
1
0
1
2.5
V
S
= 5V, 0V
LT1492 N8, S8 PACKAGES
LT1493 S16 PACKAGE
Distribution of Offset Voltage
Drift with Temperature
2
LT1492/LT1493
ABSOLUTE
M
AXI
M
U
M
RATINGS
W
W
W
U
Total Supply Voltage (V
+
to V
) .............................. 36V
Input Current ......................................................
15mA
Output Short-Circuit Duration (Note 1) ......... Continuous
Operating Temperature Range ................ 40
C to 85
C
Specified Temperature Range (Note 2) ..... 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 I
N
FOR
M
ATIO
N
W
U
U
ORDER PART
NUMBER
ORDER PART
NUMBER
S8 PART MARKING
1492
LT1492CN8
LT1492CS8
LT1493CS
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
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
A
B
1
2
3
4
5
6
7
8
TOP VIEW
S PACKAGE
16-LEAD PLASTIC SO
16
15
14
13
12
11
10
9
OUT A
IN A
+IN A
V
+
+IN B
IN B
OUT B
NC
OUT D
IN D
+IN D
V
+IN C
IN C
OUT C
NC
C
A
D
B
T
JMAX
= 150
C,
JA
= 150
C/ W
Consult factory for Industrial and Military grade parts.
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, T
A
= 25
C, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
100
180
V
V
OS
Long-Term Input Offset Voltage Stability
0.6
V/Mo
Time
I
OS
Input Offset Current
5
20
nA
I
B
Input Bias Current
50
100
nA
Input Noise Voltage
0.1Hz to 10Hz
330
nV
P-P
e
n
Input Noise Voltage Density
f
O
= 10Hz
17.3
nV/
Hz
f
O
= 1000Hz
16.5
nV/
Hz
i
n
Input Noise Current Density
f
O
= 10Hz
0.78
pA/
Hz
f
O
= 1000Hz
0.14
pA/
Hz
Input Resistance (Note 3)
Differential Mode
10
40
M
Common Mode
800
M
Input Capacitance
f = 1MHz
10
pF
Input Voltage Range
3.4
3.60
V
0
0.25
V
CMRR
Common Mode Rejection Ratio
V
CM
= 0V to 3.4V
86
102
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.5V to 12.5V
90
110
dB
5V ELECTRICAL CHARACTERISTICS
3
LT1492/LT1493
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
A
VOL
Large-Signal Voltage Gain
V
O
= 0.05V to 3.7V, R
L
= 2k
175
350
V/mV
Maximum Output Voltage Swing
Output High, No Load
4.2
4.35
V
(Note 4)
Output High, I
SOURCE
= 1mA
4.1
4.25
V
Output High, I
SOURCE
= 15mA
3.0
3.15
V
Output Low, No Load
0.003
0.006
V
Output Low, I
SINK
= 1mA
0.062
0.075
V
Output Low, I
SINK
= 15mA
0.362
0.500
V
I
O
Maximum Output Current (Note 8)
20
60
mA
SR
Slew Rate
A
V
= 2
1.8
V/
s
GBW
Gain-Bandwidth Product
f = 100kHz
4.5
MHz
I
S
Supply Current per Amplifier
425
550
A
Minimum Supply Voltage
2.1
2.5
V
Full Power Bandwidth
A
V
= 1, V
O
= 2.5V
P-P
150
kHz
t
r
, t
f
Rise Time, Fall Time
A
V
= 1, 10% to 90%, V
O
= 100mV
100
ns
OS
Overshoot
A
V
= 1, V
O
= 100mV
20
%
t
PD
Propagation Delay
A
V
= 1, V
O
= 100mV
100
ns
t
S
Settling Time
0.01%, A
V
= 1,
V
O
= 2V
2.6
s
Open-Loop Output Resistance
I
O
= 0mA, f = 2MHz
130
THD
Total Harmonic Distortion
A
V
= 1, V
O
= 1V
RMS
, f = 20Hz to 20kHz
0.005
%
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, T
A
= 25
C, unless otherwise noted.
5V ELECTRICAL CHARACTERISTICS
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, 0
C
T
A
70
C, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
q
120
280
V
V
OS
Input Offset Voltage Drift (Note 3)
q
1
3
V/
C
T
I
OS
Input Offset Current
q
5
25
nA
I
B
Input Bias Current
q
55
110
nA
Input Voltage Range
q
3.4
3.55
V
q
0
0.15
V
CMRR
Common Mode Rejection Ratio
V
CM
= 0V to 3.4V
q
84
102
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.5V to 12.5V
q
90
110
dB
A
VOL
Large-Signal Voltage Gain
V
O
= 0.05V to 3.7V, R
L
= 2k
q
140
250
V/mV
Maximum Output Voltage Swing
Output High, No Load
q
4.1
4.25
V
(Note 4)
Output High, I
SOURCE
= 1mA
q
4.0
4.15
V
Output High, I
SOURCE
= 15mA
q
2.9
3.05
V
Output Low, No Load
q
0.004
0.007
V
Output Low, I
SINK
= 1mA
q
0.070
0.085
V
Output Low, I
SINK
= 15mA
q
0.390
0.525
V
I
S
Supply Current per Amplifier
q
470
650
A
4
LT1492/LT1493
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, 40
C
T
A
85
C, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
q
150
325
V
V
OS
Input Offset Voltage Drift (Note 3)
q
1
3
V/
C
T
I
OS
Input Offset Current
q
5
40
nA
I
B
Input Bias Current
q
55
130
nA
Input Voltage Range
q
3.4
3.5
V
q
0
0.1
V
CMRR
Common Mode Rejection Ratio
V
CM
= 0V to 3.4V
q
80
90
dB
PSRR
Power Supply Rejection Ratio
V
S
= 2.5V to 12.5V
q
90
110
dB
A
VOL
Large-Signal Voltage Gain
V
O
= 0.05V to 3.7V, R
L
= 2k
q
140
220
V/mV
Maximum Output Voltage Swing
Output High, No Load
q
3.95
4.15
V
(Note 4)
Output High, I
SOURCE
= 1mA
q
3.85
4.05
V
Output High, I
SOURCE
= 15mA
q
2.75
2.95
V
Output Low, No Load
q
0.005
0.008
V
Output Low, I
SINK
= 1mA
q
0.073
0.095
V
Output Low, I
SINK
= 15mA
q
0.400
0.575
V
I
S
Supply Current per Amplifier
q
480
700
A
5V ELECTRICAL CHARACTERISTICS
V
S
=
15V, V
CM
= 0V, V
OUT
= 0V, T
A
= 25
C, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
120
450
V
I
OS
Input Offset Current
5
20
nA
I
B
Input Bias Current
45
100
nA
Input Voltage Range
13.4
13.6
V
15.0
15.2
V
CMRR
Common Mode Rejection Ratio
V
CM
= 15V to 13.4V
86
102
dB
PSRR
Power Supply Rejection Ratio
V
S
=
2V to
16V
90
113
dB
A
VOL
Large-Signal Voltage Gain
V
O
=
10V, R
L
= 5k
1500
6500
V/mV
Maximum Output Voltage Swing
Output High, I
SOURCE
= 15mA
12.9
13.15
V
Output Low, I
SINK
= 15mA
14.4
14.6
V
I
O
Maximum Output Current
(Note 8)
20
55
mA
SR
Slew Rate
A
V
= 2, (Note 5)
2
3
V/
s
GBW
Gain-Bandwidth Product
f = 100kHz
3
5
MHz
I
S
Supply Current per Amplifier
500
800
A
Channel Separation
V
O
=
10V, R
L
= 5k
128
140
dB
Minimum Supply Voltage
1.4
2
V
Full Power Bandwidth
A
V
= 1, V
O
= 20V
P-P
30
kHz
t
S
Settling Time
0.01%, A
V
= 1,
V
O
= 10V
5.8
s
15V ELECTRICAL CHARACTERISTICS
5
LT1492/LT1493
V
S
=
15V, V
CM
= 0V, V
OUT
= 0V, 0
C
T
A
70
C, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
q
160
550
V
V
OS
Input Offset Voltage Drift (Note 3)
q
1
3
V/
C
T
I
OS
Input Offset Current
q
10
30
nA
I
B
Input Bias Current
q
55
120
nA
Input Voltage Range
q
13.4
13.5
V
q
15.0
15.1
V
CMRR
Common Mode Rejection Ratio
V
CM
= 15V to 13.4V
q
84
101
dB
PSRR
Power Supply Rejection Ratio
V
S
=
2V to
16V
q
90
108
dB
A
VOL
Large-Signal Voltage Gain
V
O
=
10V,
R
L
= 5k
q
1200
4000
V/mV
Maximum Output Voltage Swing
Output High, I
SOURCE
= 15mA
q
12.7
13.0
V
Output Low, I
SINK
= 15mA
q
14.2
14.6
V
I
S
Supply Current per Amplifier
q
600
930
A
15V ELECTRICAL CHARACTERISTICS
V
S
=
15V, V
CM
= 0V, V
OUT
= 0V, 40
C
T
A
85
C, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
q
180
650
V
V
OS
Input Offset Voltage Drift (Note 3)
q
1
3
V/
C
T
I
OS
Input Offset Current
q
10
50
nA
I
B
Input Bias Current
q
55
150
nA
Input Voltage Range
q
13.4
13.45
V
q
15.0
15.05
V
CMRR
Common Mode Rejection Ratio
V
CM
= 15V to 13.4V
q
82
101
dB
PSRR
Power Supply Rejection Ratio
V
S
=
2V to
16V
q
90
108
dB
A
VOL
Large-Signal Voltage Gain
V
O
=
10V,
R
L
= 5k
q
1000
3500
V/mV
Maximum Output Voltage Swing
Output High, I
SOURCE
= 15mA
q
12.5
12.9
V
Output Low, I
SINK
= 15mA
q
14.1
14.6
V
I
S
Supply Current per Amplifier
q
620
1000
A
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