LT1211/LT1212
14MHz, 7V/µs, Single Supply
Dual and Quad
Precision Op Amps
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FEATURES
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Slew Rate: 7V/µs Typ
Gain-Bandwidth Product: 14MHz Typ
Fast Settling to 0.01%
2V Step to 200µV: 900ns Typ
10V Step to 1mV: 2.2µs Typ
Excellent DC Precision in All Packages
Input Offset Voltage: 275µV Max
Input Offset Voltage Drift: 6µV/°C Max
Input Offset Current: 30nA Max
Input Bias Current: 125nA Max
Open-Loop Gain: 1200V/mV Min
Single Supply Operation
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
Low Input Noise Voltage: 12nV/√Hz Typ
Low Input Noise Current: 0.2pA/√Hz Typ
Specified on 3.3V, 5V and ±15V
Large Output Drive Current: 20mA Min
Low Supply Current per Amplifier: 1.8mA Max
Dual in 8-Pin DIP and SO-8
Quad in 14-Pin DIP and Narrow SO-16
Note: For applications requiring higher slew rate, see the LT1213/LT1214 and
LT1215/LT1216 data sheets.
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LT®1211 is a dual, single supply precision op amp with
a 14MHz gain-bandwidth product and a 7V/µs slew rate.
The LT1212 is a quad version of the same amplifier. The
DC precision of the LT1211/LT1212 eliminates trims in
most systems while providing high frequency performance not usually found in single supply amplifiers.
The LT1211/LT1212 will operate on any supply greater
than 2.5V and less than 36V total. These amplifiers are
specified on single 3.3V, single 5V and ±15V supplies, and
only require 1.3mA of quiescent supply current per amplifier. The inputs can be driven beyond the supplies without
damage or phase reversal of the output. The minimum
output drive is 20mA, ideal for driving low impedance
loads.
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DESCRIPTIO
APPLICATIO S
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2.5V Full-Scale 12-Bit Systems: VOS ≤ 0.45LSB
10V Full-Scale 16-Bit Systems: VOS ≤ 1.8LSB
Active Filters
Photo Diode Amplifiers
DAC Current-to-Voltage Amplifiers
Battery-Powered Systems
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TYPICAL APPLICATIO
Input Current vs Input Voltage
Input Bias Current Cancellation
RG
RF
100
V
+
90
80
1/2
LT1211
+
VIN
VOUT
SIGNAL AMP
1M
+
22pF
1/2
LT1211
CANCELLATION
AMP
–
70
RIN = 300M
60
50
40
WITH CANCELLATION
30
20
10
0
0.01
1211/12 TA01
1M
INPUT CURRENT (nA)
–
VS = 5V, VOUT IN
LINEAR REGION
WITHOUT CANCELLATION
RIN = 2.4G
0.1
1
INPUT VOLTAGE (V)
10
1211/12 TA02
1
