[AK2910]
AK2910
Zero Drift operational amplifiers
Feature
AK2910 is the single 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, 800μA typ. (VDD:5.0V), which is available to operate full swing
signals in output.
AK2910 is appropriated to Sensor Pre Amp. applications.
Low Voltage, Single Supply Operation : 2.7V ~ 5.5V
Very Low Input Offset Voltage : ±1.0μV typ.
Near Zero Dirft over time and temperature : ± 2.0nV/°C typ.
Full Swing Outputs to 10kΩ Load
Power Supply Current : 800μA typ. (VDD: 5.0V, No Load)
Gain Bandwidth : 2MHz typ.
Package : TMSOP8
Part Name
AK2910T
Channel Number
1
Package
TMSOP8
Pin Location
1:N.C.
2:NIN
3:PIN
4:VSS
8:N.C.
7:VDD
6:OUT
5:N.C.
TMSOP8
（AK2910T）
MS1226-E-01
-1-
2011/06
[AK2910]
Pin Function Descriptions
Pin number
1
2
3
4
5
6
7
8
Note)
PWR
AI
AO
N.C.
Name
N.C.
NIN
PIN
VSS
N.C.
OUT
VDD
N.C.
I/O note)
N.C.
AI
AI
PWR
N.C.
AO
PWR
N.C.
Function
No Internal Connection (Open or VSS connection)
Amplifier Inverted Input
Amplifier No Inverted Input
Power Supply Ground
No Internal Connection (Open or VSS connection)
Amplifier Output
Positive Power Supply
No Internal Connection (Open or VSS connection)
: Power Supply
: Analog Input
: Analog Output
: No Internal Connection
Absolute Maximum Ratings
VSS=0V ; Note
Units
V
V
mA
°C
Parameter
Supply Voltage
Input Voltage
Input Current
Storage Temperature Range
Symbol
VDD
V
TD
I
IN
T
stg
Min
-0.3
-0.3
-10
-55
Max
6.5
VDD + 0.3
+10
150
Note : All voltage with respect to ground
WARNING :
Operational at or beyond these limits may result in permanent damage to the device. Normal operation is not
guaranteed at these extremes.
Recommended Operating Conditions
Parameter
Operationg Temperature Range
Supply Voltage
Power Supply Current
Symbol
T
a
VDD
Idd
Min.
-40
2.7
Typ.
0.8
Max.
85
5.5
1.5
Units
°C
V
mA
Conditions
VDD=5.0V,No Load
*We asuumes no responsibility for the usage beyond the conditions in this datasheet.
MS1226-E-01
-2-
2011/06
[AK2910]
Electrical Characteristics
DC Characteristics
VDD:5V, Ta:-40 to 85°C, unless otherwise noted
Max. Units
Conditions
± 10
μV
± 20 nV/°C
pA
V
V
RL
≥10kΩ
connected to VDD/2
Parameter
Input Voltage Offset
Input Voltage Offset Drift
Input Bias Current
Input Common Mode Range
Output Voltage Swing
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large Signal Voltage Gain
Short Circuit Current
Output Current
Min.
110
110
110
Typ.
±1
±2
± 100
0.0 ~
[VDD-0.2]
0.03 ~
[VDD-0.03]
130
130
130
± 50
± 25
dB
dB
dB RL
≥10kΩ
connected to VDD/2
mA
mA
AC Characteristics
VDD:5V, Ta:-40 to 85°C, unless otherwise noted
Max. Units
Conditions
MHz Av:1V/V
V/μs Av:1V/V
nVrms f:1kHz
/√Hz
μVpp
μVpp
msec Av:1V/V
pF
PF
150
pF
Parameter
Gain Bandwidth
Slew Rate
Input Voltage Noise
0.1 – 10Hz
0.1 – 1Hz
Overload Recovery Time
Input Capacitance Differential
Common Mode
Maximum Capacitance Loads
Min.
Typ.
2
1
25
0.2
0.1
0.02
1.5
12
MS1226-E-01
-3-
2011/06
[AK2910]
Typical Operating Characteristics
Supply Current vs. Temperature
(Vin:1/2VDD)
IDD- T emperature
1200
1000
800
IDD [mA]
IDD[μA]
600
400
200
0
-40
-20
0
20
40
60
80
T emperature [°C]
2.7V
5.0V
Supply Current vs. Supply Voltage
(Vin:1/2VDD)
IDD-VDD
(T a = 25°C)
1200
1000
Ι
DD [
μ
A]
IDD[μA]
800
600
400
200
0
0
1
2
3
4
5
6
Supply voltage [V]
MS1226-E-01
-4-
2011/06
[AK2910]
Output voltage vs. Load current
(VDD=2.7V, Ta=25°C)
Isource / Isink - VOL / VOH
10000
Output voltage vs. Load current
(VDD=5V, Ta=25°C)
Isouce / Isink - VOL / VOH
10000
1000
1000
VOL / VOH [mV]
VOL / VOH [mV]
100
100
10
10
1
source
sink
0.01
0.0001
0.001
0.01
0.1
1
10
1
source
0.1
0.1
sink
0.01
0.0001
0.001
0.01
0.1
1
10
Isource / Isink [mA]
Isource / Isink [mA]
Closed loop gain vs. Frequency
(VDD=2.7V, Ta=25°C)
Closed loop gain
Closed loop gain vs. Frequency
(VDD=5V, Ta=25°C)
Closed loop gain
70
60
70
60
50
Closed loop gain [dB]
Closed loop gain [dB]
Av = 100, RL = 2kΩ
50
40
30
20
10
0
-10
-20
-30
1.E+00
Av = 100, RL = 2kΩ
40
30
20
10
0
-10
-20
-30
1.E+00
Av = 1, RL = 2kΩ
Av = 10, RL = 2kΩ
Av = 10, RL = 2kΩ
Av = 1, RL = 2kΩ
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
Frequency [Hz]
Frequency [Hz]
MS1226-E-01
-5-
2011/06
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