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 •1)Features 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 7 OUT2 6 – IN2 5 + IN2 1ch – 1ch + + – 2ch – + 2 3 4 5 6 7 8 + IN1 VEE + IN2 – IN2 OUT2 VCC 4 – – IN1 VEE + 1 3 OUT1 2ch + IN1 1 Standard ICs BA4558 / BA4558F / BA4558N •Internal circuit configuration VCC R1 Q7 Q5 Q13 Q11 Q8 Q1 – IN R6 Q2 Q15 Q9 R8 R7 R5 + IN Q12 Q14 OUT Q6 Q3 Q4 R2 R3 Q10 R9 D R4 VEE •Absolute maximum ratings (Ta = 25°C) Parameter Symbol Limits BA4558 ± 18 BA4558F ± 18 BA4558N ± 18 Power supply voltage VCC Power dissipation Pd Differential input voltage VID ± 30 ± 30 ± 30 V Common-mode input voltage VI ± 15 ± 15 ± 15 V 800∗ 550∗ – 40 ~ + 85 900∗ Operating temperature Topr – 40 ~ + 85 Storage temperature Tstg – 55 ~ + 125 – 55 ~ + 125 – 55 ~ + 125 – 40 ~ + 85 ∗ 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 Unit V mW °C °C Standard ICs BA4558 / BA4558F / BA4558N •Electrical characteristics (unless otherwise noted, Ta = 25°C, V CC Parameter Symbol Min. Typ. Input offset voltage VIO — Input offset current IIO — = + 15V, VEE = – 15V) Max. Unit 0.5 6.0 mV 5 200 nA Input bias current IB — 60 500 nA High-amplitude voltage gain AV 86 100 — dB RL ⭌ 2kΩ, VO = ± 10V Common-mode input voltage VICM ± 12 ± 14 — V VOH ± 12 ± 14 — V RL ⭌ 10kΩ Minimum output voltage VOL ± 10 ± 13 — V RL ⭌ 2kΩ Common-mode rejection ratio CMRR 70 90 — dB RS ⬉ 10kΩ Power supply voltage rejection ratio PSRR — 30 150 µV / V RS ⬉ 10kΩ Slew rate S.R. — 1.0 — V / µs Channel separation CS — 105 — dB 1200 BA4558N 800 BA4558 600 400 BA4558F 200 0 0 25 50 75 85 100 125 100 OPEN LOOP GAIN: AV (dB) 1000 4 3 2 0 150 ± 10 80 60 40 20 0 1 ± 20 AMBIENT TEMPERATURE: Ta (°C) POWER SUPPLY VOLTAGE: V± (V) Fig.1 Power dissipation vs. ambient temperature Fig.2 Quiescent current vs. power supply voltage 32 20 16 12 8 4 0 100 1k 10k 100k 1M FREQUENCY: f (Hz) Fig.4 Maximum output voltage vs. frequency 1k 10k 100k 1M 10M 100 80 60 40 – 20 100 Fig.3 Open loop voltage gain vs. frequency INPUT BIAS CURRENT: IB (nA) INPUT BIAS CURRENT: IB (mA) 24 10 FREQUENCY: f (Hz) 100 28 AV = 1, RL ⭌ 2kΩ f = 1kHz 120 5 QUIESCENT CURRENT: IQ (mA) POWER DISSIPATION: Pd (mW) RS ⬉ 10kΩ Maximum output voltage •Electrical characteristic curves MAXIMUM OUTPUT VOLTAGE: VOM (V) Conditions 0 20 40 60 80 AMBIENT TEMPERATURE: Ta (°C) Fig.5 Input bias current vs. ambient temperature 75 50 25 0 10 20 30 40 POWER SUPPLY VOLTAGE: V+ (V) Fig.6 Input bias current vs. power supply voltage 3 BA4558 / BA4558F / BA4558N COMMON MODE INPUT VOLTAGE: VICM (V) INPUT VOLTAGE OUTPUT VOLTAGE VIN (V) VOUT (V) Standard ICs +5 0 –5 5 0 –5 0 20 40 60 80 TIME (µs) Fig.7 Output response characteristics 20 10 0 – 10 – 20 0 ± 10 ± 20 POWER SUPPLY VOLTAGE: V± (V) Fig.8 Common mode input voltage vs. power supply voltage VCC notes •(1)Operation 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 + VEE Fig.9 Unused circuit connections 4 Standard ICs BA4558 / BA4558F / BA4558N •External dimensions (Units: mm) BA4558 BA4558F 9.3 ± 0.3 5 1 4 1.27 0.15 ± 0.1 4.4 ± 0.2 6.2 ± 0.3 0.3 ± 0.1 0.5 ± 0.1 0° ~ 15° 2.54 8 1.5 ± 0.1 7.62 0.11 4 0.51Min. 1 3.2 ± 0.2 3.4 ± 0.3 5.0 ± 0.2 5 6.5 ± 0.3 8 0.4 ± 0.1 0.3Min. 0.15 DIP8 SOP8 BA4558N 1.2 5.8 ± 0.2 2.8 ± 0.2 8 1 3.5 ± 0.5 10.5 ± 0.5 19.3 ± 0.2 2.54 0.6 0.3 ± 0.1 0.8 1.3 SIP8 5