LT1493_15 Datasheet, PDF (1/16 Pages) Linear Technology – 5MHz, 3V/s, Low Power Single Supply, Dual and Quad Precision Op Amps

LT1492/LT1493
5MHz, 3V/µs, Low Power
Single Supply, Dual and Quad
Precision Op Amps
FEATURES
s _{Gain-Bandwidth Product: 5MHz Typ}
s _{Slew Rate: 3V/µs Typ}
s _{Low Supply Current per Amplifier: 0.55mA Max}
s _{Input Offset Voltage: 180µV Max}
s _{Input Offset Voltage Drift: 3µV/°C Max}
s _{Input Offset Current: 20nA Max}
s _{Input Bias Current: 100nA Max}
s _{Open-Loop Gain: 1500V/mV Min (VS = ±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}
U
APPLICATIONS
s _{Battery-Powered Systems}
Portable Instrumentation
s _{Active Filters}
s _{Photodiode Amplifiers}
s _{DAC Current to Voltage Amplifiers}
DESCRIPTION
The LT^®1492/LT1493 are dual/quad, low power, single sup-
ply precision op amps with 5MHz gain-bandwidth product,
3V/µs slew rate and only 450µA of quiescent supply current
per amplifier.
With a maximum input offset voltage of only 180µV, 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/µs LT1211/LT1212, the
28MHz, 12V/µs LT1213/LT1214 or the 23MHz, 50V/µs
LT1215/LT1216.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Precision AC to DC Converter (Full Wave Rectifier and Filter)
10k
V_IN
4.99k
5V
–
1/2 LT1492
+
+
1/2 LT1492
15k
–
10k
10k
+
V_OUT DC
10µF
6.49k
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
Distribution of Offset Voltage
Drift with Temperature
50
V_S = 5V, 0V
LT1492 N8, S8 PACKAGES
40 ^{LT1493 S16 PACKAGE}
30
20
10
0
– 2.5 – 2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
1492/93 G02
1