Document
ASAHI KASEI
[AK2920]
AK2920
Zero Drift operational amplifiers
Feature
AK2920 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, 800μA typ./ch (VDD:5.0V), which is available to operate full swing signals in output. AK2920 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./ch (VDD: 5.0V, No Load)
Gain Bandwidth : 2MHz typ.
Package : TMSOP8
Part Name AK2920T 2
Channel Number
Package TMSOP8
Pin Location
1:OUTA 2:NINA 3:PINA 4:VSS
8:VDD
A B
7:OUTB 6:NINB 5:PINB
TMSOP8 (AK2920T)
MS0953-E-01 -1-
2011/06
http://www.Datasheet4U.com
ASAHI KASEI Pin Function Descriptions
[AK2920]
Pin number 1 2 3 4 5 PINB 6 7 8 Note) PWR AI AO
Name OUTA NINA PINA VSS 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
Parameter Supply Voltage Input Voltage Input Current Storage Temperature Range
Symbol VDD VTD IIN -1 Tstg -5
Min -0.3 -0.3 0 5
Max 6.5 VDD + 0.3 +10 150
VSS=0V ; Note Units V V mA °C
Note : All voltage with respect to ground WARNING : Operational a t or bey ond t hese lim its may result in permanent da mage to the dev ice. Normal opera tion i s not guaranteed at these extremes.
Recommended Operating Conditions
Parameter Operationg Temperature Range Supply Voltage Power Supply Current
Symbol Ta VDD Idd1
Min. Typ. -40 2.7 5.5 0.8
Max. 85 1.5
Units °C V mA/ch
Conditions
VDD=5.0V,No Load
*We asuumes no responsibility for the usage beyond the conditions in this datasheet.
MS0953-E-01 -2-
2011/06
ASAHI KASEI Electrical Characteristics
[AK2920]
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 dB dB dB RL ≥10kΩ connected to VDD/2 mA mA
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
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 0.2 0.1 – 1Hz Overload Recovery Time Input Capacitance Differential.