KA348D [FAIRCHILD]
Quad Operational Amplifier; 四通道运算放大器器
| 型号： | KA348D |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | Quad Operational Amplifier |
| 文件： | 总10页 (文件大小：111K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
KA248/KA348
Quad Operational Amplifier
Features
Description
• KA741 OP Amp operating characteristics
• Low supply current drain
• Class AB output stage no crossover distortion
• Pin compatible with the KA324 & KA3403
• Low input offset voltage : 1mV Typ.
• Low input offset current : 4nA Typ.
The KA248/KA348 is a true quad KA741. It consists of four
independent, high gain, internally compensated, low power
operational amplifiers which have been designed to provide
functional characteristics identical to those of the familiar
KA741 operational amplifier. In addition the total supply
current for all four amplifiers is comparable to the supply
current of a single KA741 type OP Amp. Other features
include input offset currents and input bias current which are
much less than those of a standard KA741. Also, excellent
isolation between amplifiers has been achieved by
• Low input bias current : 30nA Typ.
• Gain bandwidth (unity gain): 1.0MHz Typ.
• High degree of isolation between amplifiers: 120dB
• Overload protection for inputs and outputs
independently biasing each amplifier and using layout
techniques which minimize thermal coupling.
14-DIP
1
14-SOP
1
Internal Block Diagram
Rev. 1.0.1
©2001 Fairchild Semiconductor Corporation
KA248/KA348
Schematic Diagram
(One Section Only)
Absolute Maximum Ratings
Parameter
Supply Voltage
Symbol
Value
±18
Unit
V
CC
V
V
V
-
Differential Input Voltage
Input Voltage
V
36
I(DIFF)
V
-
±18
I
Output Short Circuit Duration
Continuous
Operating Temperature
KA248
KA348
T
OPR
- 25 ~ +85
0~ +70
°C
°C
Storage Temperature
T
- 65~ +150
°C
STG
2
KA248/KA348
Electrical Characteristics
(V
CC
=15V, V = -15V, T =25 °C, unless otherwise specified)
EE A
KA248
KA348
Parameter
Symbol
Conditions
R ≤10KΩ
Unit
Min. Typ. Max. Min. Typ. Max.
-
-
-
-
-
-
1
-
6.0
7.5
50
-
-
1
-
6.0
7.5
50
100
200
400
-
S
Input Offset Voltage
Input Offset Current
V
IO
mV
nA
nA
NOTE 1
NOTE 1
NOTE 1
4
-
-
4
I
IO
125
-
-
30 200
-
30
-
Input Bias Current
Input Resistance
I
BIAS
-
500
-
-
R
-
-
0.8 2.5
0.8
-
2.5
2.4
160
-
MΩ
I
Supply Current (all Amplifiers)
Large Signal Voltage Gain
Channel Separation
I
-
2.4 4.5
4.5
-
mA
CC
R ≥2KΩ
L
25 160
-
-
-
25
15
-
G
V/mV
V
NOTE 1
15
-
-
-
CS
f = 1KHz to 20KHz
120
120
-
dB
V
Common Mode Input
Voltage Range
V
NOTE 1
±12
-
-
±12
-
-
I(R)
Small Signal Bandwidth
Phase Margin (Note2)
Slew Rate (Note2)
BW
G = 1
-
-
-
-
1.0
60
-
-
-
-
-
-
-
-
-
-
-
-
1.0
60
-
-
-
-
-
-
-
-
MHz
Degree
V/µs
V
MPH
SR
G = 1
V
G = 1
V
0.5
25
0.5
25
Output Short Circuit Current
I
-
mA
SC
R ≥10KΩ NOTE 1 ±12 ±13
L
±12 ±13
±10 ±12
Output Voltage Swing
V
V
O(P-P)
R ≥2KΩ
L
±10 ±12
Common Mode Rejection Ratio CMRR R ≥10KΩ NOTE 1
70
77
90
96
70
77
90
96
dB
dB
S
Power Supply Rejection Ratio
PSRR R ≥10KΩ NOTE 1
S
Note :
1. KA348: 0 ≤ T ≤ +70 °C , KA248: -25 ≤ T ≤ +85 °C
A
A
2. Guaranteed by design.
3
KA248/KA348
Typical Performance Characteristics
Supply Voltage (V)
Supply Voltage (V)
Figure 1. Supply Current vs Supply voltage
Figure 2. Output Voltage Swing vs Supply voltage
Sink Current (mA)
Source Current (mA)
Figure 4. Output voltage swing vs Sink Current (mA)
Figure 3. Output voltage swing vs Source Current (mA)
Frequency (Hz)
Frequency (Hz)
Figure 5. Output Impedance vs Frequency
Figure 6. Common-mode Rejection Ratio vs Frequency
4
KA248/KA348
Typical Performance Characteristics (continued)
Figure 7. Open Loop Frequency Response
Figure 8. Bode Plot
Figure 9. Large Signal Pulse Response
Figure 10. Small Signal Pulse Response
Figure 11. Undistorted Output Voltage Swing vs Frequency
Figure 12. Inverting Large Signal Pulse Response
5
KA248/KA348
Typical Performance Characteristics (continued)
Figure 13. Input Noise Voltage And Noise Current vs Fre-
quency
Figure 14. Positive Common Mode Input Voltage Limit
vs Positiue Supply Voltage
Figure 15. Negative Common.mode Input Voltage Limit vs
Negative Supply Voltage
6
KA248/KA348
Mechanical Dimensions
Package
14-DIP
6.40 ±0.20
0.252 ±0.008
#1
#14
#7
#8
7.62
0.300
3.25 ±0.20
0.128 ±0.008
0.20
0.008
MIN
3.30 ±0.30
0.130 ±0.012
5.08
MAX
0.200
7
KA248/KA348
Mechanical Dimensions (Continued)
Package
14-SOP
0.05
0.002
MIN
1.55 ±0.10
0.061 ±0.004
#14
#1
#8
#7
6.00 ±0.30
0.236 ±0.012
1.80
MAX
0.071
3.95 ±0.20
0.156 ±0.008
5.72
°
0.225
0~8
0.60 ±0.20
0.024 ±0.008
8
KA248/KA348
Ordering Information
Product Number
KA348
Package
Operating Temperature
14 DIP
14 SOP
14 DIP
14 SOP
0 ~ + 70oC
KA348D
KA248
-25 ~ +85 oC
KA248D
9
KA248/KA348
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
6/1/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation
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