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PDF LMC6034 Data sheet ( Hoja de datos )
| Número de pieza | LMC6034 | |
| Descripción | CMOS Quad Operational Amplifier | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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May 1998
LMC6034
CMOS Quad Operational Amplifier
General Description
The LMC6034 is a CMOS quad operational amplifier which
can operate from either a single supply or dual supplies. Its
performance features include an input common-mode range
that reaches ground, low input bias current, and high voltage
gain into realistic loads, such as 2 kΩ and 600Ω.
This chip is built with National’s advanced Double-Poly
Silicon-Gate CMOS process.
See the LMC6032 datasheet for a CMOS dual operational
amplifier with these same features. For higher performance
characteristics refer to the LMC660.
Features
n Specified for 2 kΩ and 600Ω loads
n High voltage gain: 126 dB
n Low offset voltage drift: 2.3 µV/˚C
n Ultra low input bias current: 40 fA
n Input common-mode range includes V−
n Operating Range from +5V to +15V supply
n ISS = 400 µA/amplifier; independent of V+
n Low distortion: 0.01% at 10 kHz
n Slew rate: 1.1 V/µs
n Improved performance over TLC274
Applications
n High-impedance buffer or preamplifier
n Current-to-voltage converter
n Long-term integrator
n Sample-and-hold circuit
n Medical instrumentation
Connection Diagram
14-Pin DIP/SO
Ordering Information
Temperature Range
Industrial
−40˚C ≤ TJ ≤ +85˚C
LMC6034IN
LMC6034IM
Top View
DS011134-1
Package
NSC
Drawing
Transport
Media
14-Pin
Molded DIP
14-Pin
Small Outline
N14A
Rail
M14A
Rail
Tape and Reel
© 1999 National Semiconductor Corporation DS011134
www.national.com
1 page  
Typical Performance Characteristics VS = ±7.5V, TA = 25˚C unless otherwise specified (Continued)
Output Characteristics
Current Sourcing
Input Voltage Noise
vs Frequency
CMRR vs Frequency
DS011134-27
Open-Loop Frequency
Response
DS011134-28
Frequency Response
vs Capacitive Load
DS011134-29
Non-Inverting Large Signal
Pulse Response
Stability vs
Capacitive Load
DS011134-30
Stability vs
Capacitive Load
DS011134-31
DS011134-32
DS011134-33
DS011134-34
Note: Avoid resistive loads of less than 500Ω, as they may cause instability.
Applications Hint
Amplifier Topolgy
The topology chosen for the LMC6034, shown in Figure 1, is
unconventional (compared to general-purpose op amps) in
that the traditional unity-gain buffer output stage is not used;
instead, the output is taken directly from the output of the in-
tegrator, to allow a larger output swing. Since the buffer tra-
ditionally delivers the power to the load, while maintaining
high op amp gain and stability, and must withstand shorts to
either rail, these tasks now fall to the integrator.
As a result of these demands, the integrator is a compound
affair with an embedded gain stage that is doubly fed forward
(via Cf and Cff) by a dedicated unity-gain compensation
driver. In addition, the output portion of the integrator is a
push-pull configuration for delivering heavy loads. While
sinking current the whole amplifier path consists of three
gain stages with one stage fed forward, whereas while
sourcing the path contains four gain stages with two fed
forward.
5 www.national.com
5 Page 
Physical Dimensions inches (millimeters) unless otherwise noted
Small Outline Dual-In-Line Pkg. (M)
Order Number LMC6034IM
NS Package Number M14A
Molded Dual-In-Line Pkg. (N)
Order Number LMC6034IN
NS Package Number N14A
11
www.national.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LMC6034.PDF ] | |
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