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BA4580RF Datasheet(PDF) 41 Page - Rohm

Part # BA4580RF
Description  Low Noise Operational Amplifiers
PDF  49 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BA4580RF Datasheet(HTML) 41 Page - Rohm

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Technical Note
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BA4558F,BA4558R F/FV/FVM,BA4560F,BA4560RF/FV/FVM,BA4564RFVBA4580RF/FVM,BA4584FV,
BA4584RF/FV,BA8522RF/FV/FVM,BA15218F,BA14741F,BA15532F,BA4510F/FV,BA2115F/FVM
www.rohm.com
2011.08 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●
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)
VCC
C2
0.1[μF]
Rf
50[kΩ]
S1
Ri
Rs
10[kΩ]
50[Ω]
10[kΩ]
50[Ω]
Ri
Rs
S2
RL
S3
1000[pF]
C3
500[kΩ]
500[kΩ]
0.1[μF]
RK
EK
RK
C1
+15[V]
-15[V]
NULL
V VF
DUT
VEE
Vicm
Fig. 312 Simplified schematic
(BA14741)
Fig. 313 Simplified schematic
(BA15532)
Δ
EK×(1+Rf /Rs)
Av = 20×Log
|VF5-VF6|
[dB]
ΔVicm×(1+Rf /Rs)
CMRR = 20×Log
|VF8-VF7|
[dB]
ΔVcc×(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
VOUT
VCC
VEE
－IN
＋IN
VOUT
VCC
VEE
－IN
＋IN
VCC
VEE
VOUT
Fig. 314 Simplified schematic
(BA4510/BA2115)
－IN
＋IN
VOUT
VCC
VEE



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