ETC LR4558

LESHAN RADIO COMPANY, LTD.
General Description
Features
The LR4558 consists of two high performance operational amplifiers. The IC features high gain, high input
resistance, excellent channel separation, wide range of
operating voltage and internal frequency compensation. It can work with r18V maximum power supply
voltage.
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g
g
g
The LR4558 is specifically suitable for applications in
differential-in, differential-out as well as in potentialmetric amplifiers and where gain and phase matched
channels are mandatory.
The LR4558 is available in DIP-8 or SOIC-8 package.
SOIC-8
Internal Frequency Compensation
Large DC Voltage Gain with 100 dB Typical
High Input Resistance with 5M:Typical
Maximum Power Supply Voltages: r18V
Applications
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Audio AC-3 Decoder System
Audio Amplifier
DIP-8
Figure 1. Package Types of LR4558
LR4558–1/7
LESHAN RADIO COMPANY, LTD.
Pin Configuration
M Package/P Package
(SOIC-8/DIP-8)
OUTPUT 1
1
8
VCC
INPUT 1-
2
7
OUTPUT 2
INPUT 1+
3
6
INPUT 2-
VEE
4
5
INPUT 2+
Top View
Figure 2. Pin Configuration of LR4558
Functional Block Diagram
3.1 K:
VCC
:
- Input
:
+ Input
Output
:
10pF
87
pF
7.1
K:
7.1
K:
480 :
4.2 K:
36 K:
VEE
Figure 3. Representative Schematic Diagram of LR4558 (Each amplifier)
LR4558–2/7
LESHAN RADIO COMPANY, LTD.
Absolute Maximum Ratings
Parameter
Symbol
Value
VCC
+ 22
VEE
- 22
Differential Input Voltage
VID
± 18
V
Input Voltage
VIC
± 15
V
Operating Temperature Range
TOP
-40 to 85
oC
Storage Temperature Range
TSTG
-65 to 150
oC
Power Supply Voltage
Unit
V
Electrical Characteristics
Parameter
Conditions
Min
Input Offset Voltage
Typ
Max
2
6.0
Unit
mV
Input Bias Current
VCM = 0V
30
500
nA
Input Offset Current
VCM = 0V
5
200
nA
Supply Current
RL = f Over full temperature
3.5
5.6
mA
range
Large Signal Voltage Gain
RL <.VO(P-P) = 10V/-10V
20
200
V/mV
Common Mode Rejection Ratio
Rs<10K?
70
90
dB
Power Supply Rejection Ratio
Rs<10K?
76
90
dB
Output Voltage Swing
RLt2K:
r10
r13
RLt10K:
r12
r14
V
LR4558–3/7
LESHAN RADIO COMPANY, LTD.
Typical Performance Characteristics
30
VCC=15V, VEE=-15V
100
25
o
RL=2K,TA=25 C
Output Voltage Swing (V)
Open Loop Voltage Gain (dB)
120
80
60
40
VCC=15V,VEE=-15V,
20
o
RL=2K, TA=25 C
15
10
20
5
0
0
1
2x10 HZ 10 HZ
2
10 HZ
3
4
10 HZ
10 HZ
5
10 HZ
0
6
1
10 HZ
10 HZ
2
3
10 HZ
10 HZ
5
10 HZ
6
10 HZ
Frequency (HZ)
Frequency (HZ)
Figure 4. Open Loop Voltage Gain vs. Frequency
Figure 5. Maximum Output Voltage Swing vs. Frequency
3
30
0.5
Equivllent Input Noise Voltage (nV/(HZ) )
10
o
28
Output Voltage Swing (V)
4
10 HZ
VCC=15V,VEE=-15V,TA=25 C
26
24
22
20
18
16
14
12
VCC=15V, VEE=-15V
o
RS=50:,TA=25 C
2
10
1
10
0
0.1K
1K
Load Resistance (k:)
Figure 6. Maximum Output Voltage Swing
vs. Load Resistance
10K
10
0
10 HZ
1
10 HZ
2
10 HZ
3
10 HZ
Frequency (HZ)
Figure 7. Equivalent Input Noise Voltage vs. Frequency
LR4558–4/7
LESHAN RADIO COMPANY, LTD.
Typical Performance Characteristics (Continued)
80
1.2
70
1.1
VCC=15V
VEE=-15V
V CC=15V
V EE=-15V
60
0.9
Bias Current (nA)
Offset Voltage (mV)
1.0
0.8
0.7
0.6
0.5
50
40
30
20
0.4
10
0.3
0
0.2
-25
0
25
50
75
100
125
-25
0
25
50
75
100
125
o
o
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 8. Input Offset Voltage vs. Temperature
Figure 9. Input Bias Current vs. Temperature
Typical Application
VO
10PF
6.2K
20K
8
6
7
5
+
LR4558
+
2
1
4
3
D2
15K
20K
20K
20K
D1
10K
VIN
Figure 10. Application of LR4558 in an AC/DC Converter
LR4558–5/7
LESHAN RADIO COMPANY, LTD.
Mechanical Dimensions
DIP - 8
Unit: mm
f
e
f
e
e
e
f
f
e
¶hf
f
0$;
5
f
0,1
LR4558–6/7
LESHAN RADIO COMPANY, LTD.
Mechanical Dimensions (Continued)
f
e
f
f
e
Unit: mm
f
f
SOIC - 8
e
e
'
f
f
¶
'
fe
e
5
5
f
e
fe
LR4558–7/7