ChipFind - документация

Электронный компонент: UA748CD

Скачать:  PDF   ZIP
.
INPUT OFFSET VOLTAGE : 3mV max. OVER
TEMPERATURE
.
FREQUENCY COMPENSATION WITH A
SINGLE 30pF CAPACITOR (C1)
.
OPERATION FROM
5V to
15V
.
LOW POWER CONSUMPTION :
50mW AT
15V
.
CONTINUOUS SHORT-CIRCUIT PROTEC-
TION
.
OPERATION AS A COMPARATOR WITH
DIFFERENTIAL INPUTS AS HIGH AS
30V
.
NO LATCH-UP WHEN COMMON-MODE
RANGE IS EXCEEDED
.
SAME
PIN
CONFIGURATION
AS
THE
LM101A
DESCRIPTION
The UA748 is a general purpose operational am-
plifier built on a single silicon chip. The resulting
close match and tight thermal coupling gives low
offsets and temperature drift as well as fast recov-
ery from thermal transients.
.
Short-circuit protection
.
Offset voltage null capability
.
Large common-mode and differential voltage
ranges
.
Low power consumption
.
No latch-up
The unity-gain compensation specified makes the
circuit stable for all feedback configurations, even
with capacitive loads. However, it is possible to
optimize compensation for best high frequency
performance at any gain. The low power dissipation
permits high voltage operation and simplifies pack-
aging in full-temperature range systems.
1
2
3
4
8
6
5
7
PIN CONNECTIONS (top view)
ORDER CODES
Part
Number
Temperature
Range
Package
N
D
UA748C
0
o
C, +70
o
C
UA748I
-40
o
C, +105
o
C
UA748M
-55
o
C, +125
o
C
Example : UA748CN
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
PRECISION SINGLE OPERATIONAL AMPLIFIER
UA748
December 1997
1 - Offset null 1 / frequency
compensation
2 - Inverting input
3 - Non-inverting input
4 - V
CC
-
5 - Offset null 2
6 - Output
7 - V
CC
+
8 - Frequency compensation
1/8
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
UA748M
UA748I
UA748C
Unit
V
cc
Supply Voltage
22
V
V
id
Differential Input Voltage
30
V
V
i
Input Voltage
15
V
P
tot
Power Dissipation
500
mW
Output Short-circuit Duration
Infinite
T
oper
Operating Free Air Temperature Range
-55 to +125
-40 to +105
0 to +70
o
C
T
stg
Storage Temperature Range
-65 to +150
-65 to +150
-65 to +150
o
C
SCHEMATIC DIAGRAM
UA748
2/8
ELECTRICAL CHARACTERISTICS
5V
V
CC
20V, C1 = 30pF, T
amb
= +25
o
C (unless otherwise specified)
Symbol
Parameter
UA748I/M
UA748C
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
V
io
Input Offset Voltage (R
S
10k
)
T
amb
= +25
o
C
T
min.
T
amb
T
max.
0.2
2
3
2
7.5
10
mV
I
io
Input Offset Current
T
amb
= +25
o
C
T
min.
T
amb
T
max.
25
75
10
70
250
300
nA
I
ib
Input Bias Current
T
amb
= +25
o
C
T
min.
T
amb
T
max.
1.5
10
20
2
50
70
nA
A
vd
Large Signal Voltage Gain *
(V
CC
=
15V, V
O
10V, R
L
= 2k
)
T
amb
= +25
o
C
T
min.
T
amb
T
max.
50
25
100
25
15
10
V/mV
SVR
Supply Voltage Rejection Ratio (R
S
10k
)
T
amb
= +25
o
C
T
min.
T
amb
T
max.
80
80
96
70
70
96
dB
I
CC
Supply Current, no load
T
amb
= +25
o
C
T
min.
T
amb
T
max.
1.8
3
3
1.8
3
3
mA
V
icm
Input Common Mode Voltage Range (V
CC
=
20V)
T
amb
= +25
o
C
T
min.
T
amb
T
max.
15
15
15
15
V
CMR
Common-mode Rejection Ratio (R
S
10k
)
T
amb
= +25
o
C
T
min.
T
amb
T
max.
80
80
96
70
70
96
dB
I
OS
Output Short-circuit Current (V
CC
=
15V)
10
30
50
10
30
50
mA
V
OPP
Output Voltage Swing (V
CC
=
15V)
T
amb
= +25
o
C
R
L
= 10k
R
L
= 2k
T
min.
T
amb
T
max.
R
L
= 10k
R
L
= 2k
12
10
12
10
14
13
12
10
12
10
14
13
V
SR
Slew Rate
(V
i
=
10V, R
L
=2k
, C
L
= 100pF, unity gain)
0.25
0.5
0.25
0.5
V/
s
t
r
Rise Time
(V
i
=
20mV, R
L
= 2k
, C
L
= 100pF, unity gain)
0.3
0.3
s
K
OV
Overshoot
(V
i
= 20mV, R
L
= 2k
, CL = 100pF, unity gain)
5
5
%
Z
I
Input Impedance (V
CC
=
15V)
1.5
4
1.5
4
M
R
o
Output Resistance (V
CC
=
15V)
75
75
GBP
Gain Bandwidth Product
(V
i
= 10mV, R
L
= 2k
, C
L
= 100pF, f = 100kHz)
0.5
1
0.5
1
MHz
THD
Total Harmonic Distortion
(f = 1kHz, A
V
= 20dB, R
L
=2k
, V
O
= 2V
PP
,C
L
=
100pF)
0.015
0.015
%
DV
io
Input Offset Current Drift
25
o
C
T
amb
T
max.
T
min.
T
amb
T
max.
10
20
100
200
10
20
300
600
pA/
o
C
DI
io
Input Offset Voltage Drift
T
min.
T
amb
T
max.
3
15
6
30
V/
o
C
UA748
3/8
UA748
4/8
UA748
5/8