[AK2929]
AK2929
Zero Drift operational amplifiers
Feature
AK2929 is the dual channel CMOS operational amplifires which is available to output with very low input offset
voltage (+/- 1.0V) and near zero input offset dirft.
It’s operated with very small current consumptions, 700A typ./ch (VDD:3.2V +/- 5%), which is available to operate
full swing signals in output.
AK2929 is appropriated to Sensor Pre Amp. applications.
Low Voltage, Single Supply Operation : 2.7V - 5.5V
Very Low Input Offset Voltage : +/- 1.0V typ.
Near Zero Dirft over time and temperature : +/- 2.0nV/C typ.
Full Swing Outputs to 10k Load
Power Supply Current : 700A typ./ch (VDD: 3.2V +/- 5%, No Load)
Gain Bandwidth : 2MHz typ.
Package : TMSOP8
Part Name
AK2929T
Channel Number
2
Package
TMSOP8
Pin Location
1:OUTA
2:NINA
3:PINA
4:VSS
8:VDD
A
B
7:OUTB
6:NINB
5:PINB
TMSOP8
(AK2929T)
Rev.1.00Ea
-1-
2012/4
[AK2929]
Pin Function Descriptions
Pin number
1
2
3
4
5
6
7
8
Note)
PWR
AI
AO
Name
OUTA
NINA
PINA
VSS
PINB
NINB
OUTB
VDD
I/O note)
AO
AI
AI
PWR
AI
AI
AO
PWR
Function
Amplifier A Output
Amplifier A Inverted Input
Amplifier A No Inverted Input
Power Supply Ground
Amplifier B No Inverted Input
Amplifier B Inverted Input
Amplifier B Output
Positive Power Supply
: Power Supply
: Analog Input
: Analog Output
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
Idd1
Min.
-40
2.7
Typ.
0.7
Max.
85
5.5
1.1
Units
C
V
mA/ch.
Conditions
VDD=3.2V +/- 5%,
No Load
*We asuumes no responsibility for the usage beyond the conditions in this datasheet.
Rev.1.00Ea
-2-
2012/4
[AK2929]
Electrical Characteristics
DC Characteristics
VDD:5V, Ta:-40 to 85C, unless otherwise noted
Max. Units
Conditions
+/- 10
V
+/- 100 nV/C
pA
V
V
dB
dB
dB
mA
mA
RL
10k
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.
90
100
100
Typ.
+/- 1
+/- 2
+/- 20
0.0 –
VDD-0.2
0.03 –
VDD-0.03
130
130
130
+/- 40
+/- 20
RL
10k
connected to VDD/2
AC Characteristics
VDD:5V, Ta:-40 to 85C, unless otherwise noted
Max. Units
Conditions
MHz Av:1V/V
V/s Av:1V/V
nVrms f:1kHz
/√Hz
Vpp
Vpp
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
0.5
0.2
0.05
1.5
12
Rev.1.00Ea
-3-
2012/4
[AK2929]
Typical Operating Characteristics
Supply Current vs. Temperature
(Vin:1/2VDD)
IDD-T emperat ure
2500
2000
IDD [ A]
1500
1000
500
0
-40
-20
0
20
40
60
80
T emperat ure [°C]
2.7V
5.0V
Supply Current vs. Supply Voltage
(Vin:1/2VDD)
IDD-VDD
(Ta = 25°C)
2500
2000
IDD [ A]
1500
1000
500
0
0
1
2
3
4
5
6
Supply voltage [V]
Rev.1.00Ea
-4-
2012/4
[AK2929]
Output voltage vs. Load current
(VDD=2.7V, Ta=25C)
Isource / Isink - VOL / VOH
Output voltage vs. Load current
(VDD=5V, Ta=25C)
Isouce / Isink - VOL / VOH
10000
10000
1000
1000
VOL / VOH [mV]
VOL / VOH [mV]
100
100
10
10
1
1
source
0.1
source
sink
0.1
sink
0.01
0.0001
0.001
0.01
0.1
1
10
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=25C)
Closed loop gain
Closed loop gain vs. Frequency
(VDD=5V, Ta=25C)
Closed loop gain
70
60
70
60
50
Av = 100, RL = 2k
50
Av = 1 00 , RL = 2 k
Closed loop gain [dB]
Closed loop gain [dB]
40
30
20
10
0
-10
-20
-30
1.E+00
1 .E+01
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
Av = 1, RL = 2k
Av = 10, RL = 2k
40
30
20
10
0
-10
-20
-30
1.E+00
Av = 1 , RL = 2 k
Av = 1 0, RL = 2k
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]
Rev.1.00Ea
-5-
2012/4
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