Document
Standard ICs
Dual operational amplifier
BA4558 / BA4558F / BA4558N
The BA4558, BA4558F, and BA4558N are monolithic ICs with two operational amplifiers featuring low power consumption and internal phase compensation mounted on a single silicon chip. These products offer high speed, a wide band width, and low noise. Outstanding thermal characteristics and voltage gain band width make these ICs ideal for use in a wide variety of electronic circuits. The BA4558 comes in an 8-pin DIP package and is compatible with the 4558 operational amplifier. The BA4558F comes in an 8-pin SOP package, and the BA4558N in an 8-pin SIP package.
Applications • Active filters Audio amplifiers VCOs Other electronic circuits
Features • 1) Low power dissipation of approximately 50mW (typ.). 2) Built-in output short-circuit protection circuit. 3) Internal phase compensation.
4) No latch-up. 5) Wide range of common mode and differential voltage. 6) High gain and low noise.
•Block diagram
BA4558 / BA4558F BA4558N OUT1 1 8 VCC
– IN1
2 –
1ch
7
OUT2
1ch
+
–
+
2ch –
+
2ch
+ IN1
3
+
–
6
– IN2 1 2 3 4 5 6 7 OUT2 8 VCC
– IN1
OUT1
+ IN1
VEE
4
5
+ IN2
+ IN2
– IN2
VEE
1
Standard ICs
BA4558 / BA4558F / BA4558N
•Internal circuit configuration
VCC R1 Q7 Q5 Q13
Q11 Q8 R6 Q9 R5 + IN Q12 Q6 Q3 Q4 Q10 Q14 OUT R7 R8 Q15
– IN
Q1
Q2
R2 VEE
R3
R9 R4
D
•Absolute maximum ratings (Ta = 25°C)
Parameter Power supply voltage Power dissipation Differential input voltage Common-mode input voltage Operating temperature Storage temperature Symbol VCC Pd VID VI Topr Tstg Limits BA4558 ± 18 800∗ ± 30 ± 15 – 40 ~ + 85 BA4558F ± 18 550∗ ± 30 ± 15 – 40 ~ + 85 BA4558N ± 18 900∗ ± 30 ± 15 – 40 ~ + 85 Unit V mW V V °C °C
– 55 ~ + 125 – 55 ~ + 125 – 55 ~ + 125
∗ Refer to Pd characteristics diagram.
The values for the BA4558F are those when it is mounted on a glass epoxy board ( 50mm × 50mm × 1.6mm) .
2
Standard ICs
BA4558 / BA4558F / BA4558N
CC
•Electrical characteristics (unless otherwise noted, Ta = 25°C, V
Parameter Input offset voltage Input offset current Input bias current High-amplitude voltage gain Common-mode input voltage Maximum output voltage Minimum output voltage Common-mode rejection ratio Power supply voltage rejection ratio Slew rate Channel separation Symbol VIO IIO IB AV VICM VOH VOL CMRR PSRR S.R. CS Min. — — — 86 ± 12 ± 12 ± 10 70 — — — Typ. 0.5 5 60 100 ± 14 ± 14 ± 13 90 30 1.0 105
= + 15V, VEE = – 15V)
Unit mV nA nA dB V V V dB µV / V V / µs dB RL м 10kΩ RL м 2kΩ RS Ϲ 10kΩ RS Ϲ 10kΩ AV = 1, RL м 2kΩ f = 1kHz RL м 2kΩ, VO = ± 10V RS Ϲ 10kΩ Conditions
Max. 6.0 200 500 — — — — — 150 — —
•Electrical characteristic curves
1200 QUIESCENT CURRENT: IQ (mA) 1000 BA4558N 800 BA4558 600 400 200 0 0 BA4558F 5 POWER DISSIPATION: Pd (mW) OPEN LOOP GAIN: AV (dB) ± 10 POWER SUPPLY VOLTAGE: V± (V) ± 20 4
120 100
80
60
3
40
20 0 1
25
50
75 85 100
125
150
2 0
10
100
1k
10k
100k
1M 10M
AMBIENT TEMPERATURE: Ta (°C)
FREQUENCY: f (Hz)
Fig.1 Power dissipation vs. ambient temperature
32 MAXIMUM OUTPUT VOLTAGE: VOM (V) INPUT BIAS CURRENT: IB (mA) 28 24 20 16 12 8 4 0 100 1k 10k 100k 1M 100
Fig.2 Quiescent current vs. power supply voltage
Fig.3 Open loop voltage gain vs. frequency
100
INPUT BIAS CURRENT: IB (nA)
80
75
60
50
40 – 20
0
20
40
60
80
25 0
10
20
30
40
FREQUENCY: f (Hz)
AMBIENT TEMPERATURE: Ta (°C)
POWER SUPPLY VOLTAGE: V+ (V)
Fig.4 Maximum output voltage vs. frequency
Fig.5 Input bias current vs. ambient temperature
Fig.6 Input bias current vs. power supply voltage
3
Standard ICs
BA4558 / BA4558F / BA4558N
+5 0 –5
COMMON MODE INPUT VOLTAGE: VICM (V)
20
INPUT VOLTAGE OUTPUT VOLTAGE VIN (V) VOUT (V)
10
0
5 0 –5 0 20 40 TIME (µs) 60 80
– 10
– 20 0
± 10 POWER SUPPLY VOLTAGE: V± (V)
± 20
Fig.7 Output response characteristics
Fig.8 Common mode input voltage vs. power supply voltage
Operation notes • (1) Unused circuit connections If there are any circuits which are not being used, we recommend making connections as shown in Figure 9, with the non-inverted input pin connected to the potential within the in-phase input voltage range (VICM).
– To potential in VICM
VCC
+
VEE
Fig.9 Unused circuit connections
4
Standard ICs
BA4558 / BA4558F / BA4558N
•External dimensions (Units: mm)
BA4558
9.3 ± 0.3 6.5 ± 0.3 8 5
BA4558F
5.0 ± 0.2 8 6.2 ± 0.3 4.4 ± 0.2 5
1 0.51Min.
4 7.62
3.2 ± 0.2 3.4 ± 0.3
0.11
0.3 ± 0.1
1.5 ± 0.1
1
4
2.54
0.5 ± 0.1 0° ~ 15°
1.27
0.4 ± 0.1
0.3Min. 0.15
DIP8
BA4558N
SOP8
19.3 ± 0.2 10.5 ± 0.5 5.8 ± 0.2
2.8 ± 0.2
1.2
1 3.5 ± 0.5 2.54
8 0.6 0.8 1.3 0.3 ± 0.1
SIP8
0.15 ± 0.1
5
.