LM614 Quad Operational Amplifier and Adjustable Reference
February 1995
LM614 Quad Operational Amplifier
and Adjustable Reference
General Description
The LM614 consists of four op-amps and a programmable
voltage reference in a 16-pin package The op-amp out-per-
forms most single-supply op-amps by providing higher
speed and bandwidth along with low supply current This
device was specifically designed to lower cost and board
space requirements in transducer test measurement and
data acquisition systems
Combining a stable voltage reference with four wide output
swing op-amps makes the LM614 ideal for single supply
transducers signal conditioning and bridge driving where
large common-mode-signals are common The voltage ref-
erence consists of a reliable band-gap design that maintains
low dynamic output impedance (1X typical) excellent initial
tolerance (0 6%) and the ability to be programmed from
1 2V to 6 3V via two external resistors The voltage refer-
ence is very stable even when driving large capacitive
loads as are commonly encountered in CMOS data acquisi-
tion systems
As a member of National鈥檚 new Super-Block
TM
family the
LM614 is a space-saving monolithic alternative to a multi-
chip solution offering a high level of integration without sac-
rificing performance
Features
Op Amp
Y
Low operating current
300
mA
Y
Wide supply voltage range
4V to 36V
Y
Wide common-mode range
V
b
to (V
a
b
1 8V)
Y
Wide differential input voltage
g
36V
Y
Available in plastic package rated for Military Tempera-
ture Range Operation
Reference
Y
Adjustable output voltage
1 2V to 6 3V
Y
Tight initial tolerance available
g
0 6%
Y
Wide operating current range
17
mA
to 20 mA
Y
Tolerant of load capacitance
Applications
Y
Y
Y
Y
Transducer bridge driver and signal processing
Process and mass flow control systems
Power supply voltage monitor
Buffered voltage references for A D鈥檚
Connection Diagram
TL H 9326 鈥?1
Ordering Information
Reference
Tolerance V
OS
g
0 6%
80 ppm C max
V
OS
s
3 5 mV max
Temperature Range
Military
b
55 C
s
T
A
s
a
125 C
LM614AMN
LM614AMJ 883
(Note 13)
LM614MN
LM614BIN
LM614WM
LM614CN
LM614CWM
Industrial
b
40 C
s
T
A
s
a
85 C
LM614AIN
Commercial
0 C
s
T
A
s
a
70 C
Package
NSC
Drawing
N16E
J16A
N16E
M16B
16-pin
Molded DIP
16-pin
Ceramic DIP
16-pin
Molded DIP
16-pin Wide
Surface Mount
g
2 0%
150 ppm C max
V
OS
s
5 0 mV
Super-Block
TM
is a trademark of National Semiconductor Corporation
C
1996 National Semiconductor Corporation
TL H 9326
RRD-B30M56 Printed in U S A