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PDF AK2921 Data sheet ( Hoja de datos )

Número de pieza AK2921
Descripción Zero Drift operational amplifiers
Fabricantes AKM 
Logotipo AKM Logotipo



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[AK2921]
AK2921
Zero Drift operational amplifiers
Feature
AK2921 is the dual channel CMOS operational amplifires which is available to output with very low input offset
voltage (+/- 1.0μV) and near zero input offset dirft.
It’s operated with very small current consumptions, 260μA typ./ch (VDD:5.0V), which is available to operate full
swing signals in output.
AK2921 is appropriated to Sensor Pre Amp. applications.
… Low Voltage, Single Supply Operation : 1.6V - 5.5V
… Very Low Input Offset Voltage : +/- 1.0μV typ.
… Near Zero Dirft over time and temperature : +/- 5.0nV/°C typ.
… Full Swing Outputs to 10kΩ Load
… Power Supply Current : 260μA typ./ch (VDD: 5.0V, No Load)
… Gain Bandwidth : 0.8MHz typ.
… Package : TMSOP8
Part Name Channel Number
Package
AK2921T 2
TMSOP8
Pin Location
1: OU TA
2: NIN A
3: PI NA
4: VSS
A
B
TMSOP8
(AK2921T)
8:VDD
7:OUTB
6:N IN B
5:PINB
Rev.1.00Ea
-1-
2012/4
http://www.Datasheet4U.com

1 page




AK2921 pdf
[AK2921]
… Output voltage vs. Load current
(VDD=1.6V, Ta=25°C)
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
02
Isource/Isink - VOH/VOL
46
Isource / Isink [mA]
source
sink
8 10
… Output voltage vs. Load current
(VDD=5V, Ta=25°C)
Isource / Isink - VOH / VOL
5
4
3
2
1 source
sink
0
02 0 40 60 80
Isource / Isink [mA]
100
… Closed loop gain vs. Frequency
(VDD=1.6V, Ta=25°C)
Closed loop gain
… Closed loop gain vs. Frequency
(VDD=5V, Ta=25°C)
Closed loop gain
70
60
50
40
30
20
10
0
-10
-20
-30
1.E+00
Av = 100, RL=2kΩ
Av = 10, RL=2kΩ
Av = 1, RL=2kΩ
1.E+01
1.E+02
1.E+03 1.E+04
Frequency [Hz]
1.E+05
1.E+06
1.E+07
70
60
50
40
30
20
10
0
-10
-20
-30
1.E+00
Av = 100, RL=2kΩ
Av = 10, RL=2kΩ
Av = 1, RL=2kΩ
1.E+01
1.E+02
1.E+03 1.E+04
Frequency [Hz]
1.E+05
1.E+06
1.E+07
Rev.1.00Ea
-5-
2012/4

5 Page





AK2921 arduino
[AK2921]
… Voltage noise density
(VDD=1.6V, Ta=25°C, f=0~2.5kHz)
Voltage noise density
… Voltage noise density
(VDD=5V, Ta=25°C, f=0~2.5kHz)
Voltage noise density
20 0
18 0
16 0
1 40
1 20
1 00
80
60
40
20
0
0
500
1 000
15 00
20 00
250 0
Frequency [Hz]
20 0
18 0
1 60
1 40
1 20
1 00
80
60
40
20
0
0
500
1 000
15 00
20 00
250 0
Frequency [Hz]
… Voltage noise density
(VDD=1.6V, Ta=25°C, f=0~20kHz)
Voltage noise density
(f= 05 0kHz)
2 00
18 0
16 0
14 0
12 0
1 00
80
60
40
20
0
0
100 00
200 00
300 00
Frequency [Hz]
400 00
5000 0
… Voltage noise density
(VDD=5V, Ta=25°C, f=0~50kHz)
Volta ge noise density
(f= 0 5 0k Hz)
20 0
18 0
16 0
14 0
1 20
1 00
80
60
40
20
0
0
10 000
200 00
300 00
Frequency [Hz]
400 00
500 00
Rev.1.00Ea
- 11 -
2012/4

11 Page







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