LT1212_15 Datasheet, PDF (1/20 Pages) Linear Technology – 14MHz, 7V/s, Single Supply Dual and Quad Precision Op Amps

LT1211/LT1212
14MHz, 7V/µs, Single Supply
Dual and Quad
Precision Op Amps
FEATURES
s _{Slew Rate: 7V/µs Typ}
s _{Gain-Bandwidth Product: 14MHz Typ}
s _{Fast Settling to 0.01%}
2V Step to 200µV: 900ns Typ
10V Step to 1mV: 2.2µs Typ
s _{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
s _{Single Supply Operation}
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
s _{Low Input Noise Voltage: 12nV/√Hz Typ}
s _{Low Input Noise Current: 0.2pA/√Hz Typ}
s _{Specified on 3.3V, 5V and ±15V}
s _{Large Output Drive Current: 20mA Min}
s _{Low Supply Current per Amplifier: 1.8mA Max}
s _{Dual in 8-Pin DIP and SO-8}
s _{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.
DESCRIPTIO
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 perfor-
mance 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 ampli-
fier. 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.
U
APPLICATIO S
s _{2.5V Full-Scale 12-Bit Systems: VOS ≤ 0.45LSB}
s _{10V Full-Scale 16-Bit Systems: VOS ≤ 1.8LSB}
s _{Active Filters}
s _{Photo Diode Amplifiers}
s _{DAC Current-to-Voltage Amplifiers}
s _{Battery-Powered Systems}
TYPICAL APPLICATIO
Input Bias Current Cancellation
R_G
R_F
V⁺
–
1/2
LT1211
V_OUT
V_IN
+
SIGNAL AMP
1M
22pF
1M
+
1/2
LT1211
–
CANCELLATION
AMP
1211/12 TA01
Input Current vs Input Voltage
100
90
V_S = 5V, V_OUT IN
LINEAR REGION
80
WITHOUT CANCELLATION
70
R_IN = 300M
60
50
40
WITH CANCELLATION
30
20
R_IN = 2.4G
10
0
0.01
0.1
1
INPUT VOLTAGE (V)
10
1211/12 TA02
1