Datasheet

Technical Note
41/48
BA4558F,BA4558R F/FV/FVM,BA4560F,BA4560RF/FV/FVM,BA4564RFVBA4580RF/FVM,BA4584FV,
BA4584RF/FV,BA8522RF/FV/FVM,BA15218F,BA14741F,BA15532F,BA4510F/FV,BA2115F/FVM
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2011.08 - Rev.B
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●Schematic diagram
●Test circuit 1 NULL method
VCC, VEE, EK, Vicm Unit: [V], Vicm=0[V] for all parameter
Parameter VF S1 S2
S3
(*35)
BA4558/BA4558R
BA4560/BA4560R
BA4564R
BA4580R/BA4584
BA4584R/BA8522R
BA15218/BA14741
BA15532 BA4510 BA2115
Calculation
Vcc VEE EK Vcc VEE EK Vcc VEE EK Vcc VEE EK Vcc VEE EK
Input Offset Voltage
VF1 ON ON OFF 15 -15 0 15 -15 0 15 -15 0 2.5 -2.5 0 2.5 -2.5 0 1
Input Offset Current
VF2 OFF OFF OFF 15 -15 0 15 -15 0 15 -15 0 2.5 -2.5 0 2.5 -2.5 0 2
Input Bias Current
VF3 OFF ON
OFF
15 -15 0 15 -15 0 15 -15 0 2.5 -2.5 0 2.5 -2.5 0
3
VF4 ON OFF 15 -15 0 15 -15 0 15 -15 0 2.5 -2.5 0 2.5 -2.5 0
Large Signal
Voltage Gain
VF5
ON ON ON
15 -15 -10 15 -15 -10 15 -15 -10 2.5 -2.5 -1.0 2.5 -2.5 -1.0
4
VF6 15 -15 10 15 -15 10 15 -15 10 2.5 -2.5 1.0 2.5 -2.5 1.0
Common-mode Rejection
Ratio
(Input Common-mode
Voltage Range)
VF7
ON ON OFF
3 -27 12 3 -27 12 3 -27 12 1.5 -3.5 -1.0 1.5 -3.5 -1.0
5
VF8 27 -3 -12 27 -3 -12 27 -3 -12 3.5 -1.5 1.0 3.5 -1.5 1.0
Power Supply
Rejection Ratio
VF9
ON ON OFF
4 -4 0 2 -2 0 3 -3 0 1.25 -1.25 0 0.75 -1.25 0
6
VF10 15 -15 0 16 -16 0 20 -20 0 3.0 -3.0 0 7.0 -7.0 0
(*35) S3 is always ON for BA15532.
-Calculation-
1. Input Offset Voltage (Vio)
2. Input Offset Current (Iio)
3. Input Bias Current (Ib)
4. Large Signal Voltage Gain (Av)
5. Common-mode Rejection Ratio (CMRR)
6. Power Supply Rejection Ratio (PSRR)
Fig. 311 Simplified schematic
(BA4558/BA4558R/BA15218/BA4560/BA4564R/
BA4560R/BA4580R/BA4584/BA4584R/BA8522R)
Fig. 315 Test circuit 1 (one channel only)
VC
C
C2
0.1[μF]
Rf
50[kΩ]
S1
RiRs
10[kΩ]50[Ω]
10[kΩ]
50[Ω]
Ri
Rs
S2
RL
S3
1000[pF]
C3
500[kΩ]
500[kΩ]
0.1[μF]
R
K
E
K
R
K
C1
+15[V]
-15[V ]
NULL
V
V
F
DUT
VEE
Vic
m
Fig. 312 Simplified schematic
(BA14741)
Fig. 313 Simplified schematic
(BA15532)
Δ
EK×(1+Rf /Rs)
A
v = 20×Log
|VF5-VF6|
[dB]
Δ
Vicm×(1+Rf /Rs)
CMRR = 20×Log
|VF8-VF7|
[dB]
Δ
Vcc×(1+Rf /Rs)
PSRR = 20×Log
|VF10-VF9|
[dB]
| VF1 |
Vio =
1 + Rf / Rs
[V]
| VF2
－
VF1 |
Iio =
Ri ×(1 + Rf / Rs)
[A]
| VF4
－
VF3 |
Ib =
2×Ri× (1 + Rf / Rs)
[A]
－
IN
＋
IN
VOU
T
VCC
VEE
－
IN
＋
IN
VOU
T
VCC
VEE
－
IN
＋
IN
VCC
VEE
VOU
T
Fig. 314 Simplified schematic
(BA4510/BA2115)
－
IN
＋
IN
VOU
T
VCC
VEE