LT1057_1 Datasheet, PDF (1/16 Pages) Linear Technology – Dual and Quad, JFET Input Precision High Speed Op Amps

LT1057/LT1058
Dual and Quad, JFET Input
Precision High Speed Op Amps
FEATURES
n _{14V/μs Slew Rate: 10V/μs Min}
n _{5MHz Gain-Bandwidth Product}
n _{Fast Settling Time: 1.3μs to 0.02%}
n _{150μV Offset Voltage (LT1057): 450μV Max}
n _{180μV Offset Voltage (LT1058): 600μV Max}
n _{2μV/°C VOS Drift: 7μV/°C Max}
n _{50pA Bias Current at 70°C}
n _{Low Voltage Noise:}
13nV/√Hz at 1kHz
26nV/√Hz at 10Hz
APPLICATIONS
n _{Precision, High Speed Instrumentation}
n _{Fast, Precision Sample-and-Hold}
n _{Logarithmic Amplifiers}
n _{D/A Output Amplifiers}
n _{Photodiode Amplifiers}
n _{Voltage-to-Frequency Converters}
n _{Frequency-to-Voltage Converters}
DESCRIPTION
The LT^®1057 is a matched JFET input dual op amp in
the industry standard 8-pin configuration, featuring a
combination of outstanding high speed and precision
specifications. It replaces all the popular bipolar and JFET
input dual op amps. In particular, the LT1057 upgrades the
performance of systems using the LF412A and OP-215
JFET input duals.
The LT1058 is the lowest offset quad JFET input operational
amplifier in the standard 14-pin configuration. It offers
significant accuracy improvement over presently available
JFET input quad operational amplifiers. The LT1058 can
replace four single precision JFET input op amps, while
saving board space, power dissipation and cost.
Both the LT1057 and LT1058 are available in the plastic
PDIP package and the surface mount SO package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Current Output, High Speed, High Input Impedance
Instrumentation Amplifier
V2 ³ +
1/4
LT1058
2_–
13 _–
1/4
12
V1
LT1058
+
1 7.5k
4.7k
9.1k
500Ω*
4.7k
14 7.5k
6_–
1/4
7
LT1058
5₊
8
6.8k
1k**
7.5k
I_OUT
=
2(V1 –
R_X
V2)
R_X
I_OUT
10
1/4
LT1058
9
*GAIN ADJUST
**COMMON MODE REJECTION ADJUST
BANDWIDTH z 2MHz
10578 TA01
Distribution of Offset Voltage
(All Packages, LT1057 and LT1058)
25
V_S = p15V
T_A = 25oC
20
LT1057: 610 OP AMPS
LT1058: 520 OP AMPS
1130 OP AMPS
TESTED
15
10
5
0
–1.0
–0.6 –0.2 0 0.2 0.6 1.0
INPUT OFFSET VOLTAGE (mV)
10578 TA01b
10578fc
1