Standard ICs
BA728 / BA728F / BA728N
•Internal circuit configuration
Q6
OUT
VCC
Q13
Q16 Q18
R5
Q19
Q24
+ IN
– IN
Q3
Q2
Q1
Q4
C1
Q7
Q27 Q29
Q15
Q25
R1
R2
R4
Q8
Q17
Q20
Q10
Q5
Q9
Q11
Q12
Q14
R3
Q21
Q23
Q22
Q26
Q28
R6
VEE
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
BA728
Limits
Unit
BA728F
BA728N
Power supply voltage
Power dissipation
VCC
18 ( ± 9)
18 ( ± 9)
18 ( ± 9)
V
Pd
800∗
550∗
550∗
mW
Differential input voltage
VID
VCC
VCC
VCC
V
Common-mode input voltage
VI
– 0.3 ~ + VCC – 0.3 ~ + VCC – 0.3 ~ + VCC
V
Operating temperature
Topr – 20 ~ + 75 – 20 ~ + 75 – 20 ~ + 75
°C
Storage temperature
Tstg – 55 ~ + 125 – 55 ~ + 125 – 55 ~ + 125 °C
∗ Refer to Pd characteristics diagram.
∗ The values for the BA728Fare those when it is mounted on a glass epoxy PCB (50mm × 50mm × 1.6mm).
•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = + 6V, VEE = - 6V)
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Input offset voltage
VIO
—
2
10
mV
Input offset current
IIO
—
1
50
nA
Input bias current
IB
—
10
250
nA
High-amplitude voltage gain
AV
86
100
—
dB RL м 2kΩ
Common-mode input voltage
Maximum output voltage
VICM 4 ~ – 6 4.5 ~ – 6 —
VOM ± 3.0 ± 4.5
—
V
V
RL м 2kΩ
Common mode rejection ratio
CMRR 70
Power supply voltage rejection ratio
PSRR
—
Slew rate
S. R.
—
Maximum frequency
fT
—
90
—
dB
30
150 µV / V
0.7
—
V / µS AV = 1, RL = 2kΩ
0.7
—
MHz
Channel separation
CS
—
120
—
dB
source Isource —
20
—
mA
VIN+ = 1V, VIN– = 0V
Maximum output current
sink
Isink
—
10
—
mA
VIN– = 1V, VIN+ = 0V
2