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LT1492 Datasheet

  • LT1492

  • 5MHz, 3V/us, Low Power Single Supply, Dual and Quad Precisio...

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LT1492/LT1493
5MHz, 3V/碌s, Low Power
Single Supply, Dual and Quad
Precision Op Amps
FEATURES
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DESCRIPTION
The LT
廬
1492/LT1493 are dual/quad, low power, single sup-
ply precision op amps with 5MHz gain-bandwidth product,
3V/碌s slew rate and only 450碌A(chǔ) of quiescent supply current
per amplifier.
With a maximum input offset voltage of only 180碌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
鹵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/碌s LT1211/LT1212, the
28MHz, 12V/碌s LT1213/LT1214 or the 23MHz, 50V/碌s
LT1215/LT1216.
, LTC and LT are registered trademarks of Linear Technology Corporation.
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Gain-Bandwidth Product: 5MHz Typ
Slew Rate: 3V/碌s Typ
Low Supply Current per Amplifier: 0.55mA Max
Input Offset Voltage: 180碌V Max
Input Offset Voltage Drift: 3碌V/擄C Max
Input Offset Current: 20nA Max
Input Bias Current: 100nA Max
Open-Loop Gain: 1500V/mV Min (V
S
=
鹵15V)
Low Input Noise Voltage: 16.5nV/鈭欻z
Low Input Noise Current: 0.14pA/鈭欻z
Large Output Drive Current: 20mA Min
Single Supply Operation
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
Wide Supply Voltage Range: 2.5V to 36V
Specified on 3.3V, 5V and
鹵15V
Dual in 8-Pin PDIP and SO Package
Quad in a Narrow 16-Pin SO Package
APPLICATIONS
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Battery-Powered Systems
Portable Instrumentation
Active Filters
Photodiode Amplifiers
DAC Current to Voltage Amplifiers
TYPICAL APPLICATION
50
Precision AC to DC Converter (Full Wave Rectifier and Filter)
40
PERCENT OF UNITS (%)
4.99k
5V
10k
V
IN
+
1/2 LT1492
15k
10k
鈥?/div>
1/2 LT1492
鈥?/div>
10k
6.49k
+
V
OUT
DC
10碌F
+
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
1492/93 TA01
U
U
U
Distribution of Offset Voltage
Drift with Temperature
V
S
= 5V, 0V
LT1492 N8, S8 PACKAGES
LT1493 S16 PACKAGE
30
20
10
0
鈥?2.5 鈥?2 鈥?.5 鈥? 鈥?0.5 0 0.5 1 1.5 2 2.5
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (碌V/擄C)
1492/93 G02
1

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