AK2975H

[AK2975]
AK2975
Precision High Speed Low Noise Operational Amplifier
1.
Genaral Description
AK2975 is the dual channel Precision CMOS operational amplifiers which is available to output with low
Input Offset Voltage (±200μV typ.) , High Band Width and Low Noise.
AK2975 is appropriated to Sensor Pre Amp. Applications.
2.
Feartures
AK2975 is the dual channel Precision CMOS operational amplifiers which is available to output with low
Input Offset Voltage (±200μV typ.) , High Band Width and Low Noise.
AK2975 is appropriated to Sensor Pre Amp. Applications.
• Single Supply Operation Range : 2.7V ~ 5.5V
• Low Input Offset Voltage
: ±200μV typ.
Offset Drift
: ±1μ V/°C typ.
Input Voltage Noise
: 10nVrms/√Hz Typ. (@ 1kHz)
Input Common Mode Range
: VSS to VDD
Output Voltage Range
: [VSS+0.03] to [VDD-0.03]V @ (RL:10kΩ)
• Power Supply Current
: 4mA/ch. typ. (VDD: 5V, No Load)
• Gain Bandwidth
: 50MHz typ.
• Slew Rate
: 20V/μsec typ.
• Operating Temperature Range
: -40 ~ 125°C
• Package
: MSOP8
Part Name
AK2975H
Channel Number
2
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Package
MSOP8
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[AK2975]
3.
Table of Contents
1.
Genaral Description ............................................................................................................................ 1
2.
Feartures ............................................................................................................................................. 1
3.
Table of Contents ................................................................................................................................ 2
4.
Pin Location ........................................................................................................................................ 2
5.
Pin Function Descriptions ................................................................................................................... 3
6.
Absolute Maximum Ratings ................................................................................................................ 3
7.
Recommended Operating Conditions................................................................................................. 3
8.
Electrical Characteristics..................................................................................................................... 4
9.
Typical Operating Characteristics (for reference)............................................................................... 6
10. Package ............................................................................................................................................ 14
11. Ordering Guide.................................................................................................................................. 16
4.
Pin Location
1:OUTA
2:NINA
3:PINA
8:VDD
A
7:OUTB
B
6:NINB
4:VSS
5:PINB
8-pin MSOP
(AK2975H)
Figure 4.1 AK2975 Pin Location
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5.
Pin number
1
2
3
4
5
6
7
8
Note
* 1. PWR
AI
AO
Name
OUTA
NINA
PINA
VSS
PINB
NINB
OUTB
VDD
Pin Function Descriptions
I/O
(* 1)
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
6.
Parameter
Supply Voltage
Input Voltage
Input Current
Storage Temperature Range
Absolute Maximum Ratings
Symbol
VDD
VTD
IIN
Tstg
VSS=0V (* 2)
Max
Units
6.5
V
VDD + 0.3
V
+10
mA
150
C
Min
-0.3
-0.3
-10
-65
Note
* 2. 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.
7.
Recommended Operating Conditions
Parameter
Operationg Temperature Range
Ground level (* 2)
Supply Voltage
Symbol
Ta
VSS
VDD
Min.
-40
0
2.7
Typ.
0
Max.
125
0
5.5
Units
C
V
V
VSS=0V (* 2)
Conditions
[WARNING] We asuumes no responsibility for the usage beyond the conditions in this datasheet.
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8.
Electrical Characteristics
 DC Characteristics ( typical condition is VDD= 5V, VCM= VDD/2 (* 3), Ta= 25ºC )
VDD= 5.0V, VCM= VDD/2, VSS= 0V, Ta= -40~125C, unless otherwise noted
Parameter
Min. Typ.
Max.
Units
Conditions
Input Voltage Offset :VIO
± 200 ±1000
V VCM = VDD/2 (* 3)
Input Voltage Offset Drift :VIOD
±1
±3.5
V/C (* 4)
Input Bias Current
:IS
±1
± 200
pA
Input Common Mode Range :VICM
VSS
VDD
V
Output Voltage Swing :VOM
0.03
VDD-0.03
V
RL10kΩ
Common Mode Rejection Ratio:CMR 60
90
dB (* 5)
Power Supply Rejection Ratio :SVR 80 100
dB (* 6)
Large Signal Voltage Gain :AV
95 115
dB RL10k connected to VDD/2 (* 7)
Output Short Current
:IOS
± 450
mA
Output Current
:IO
± 350.
mA
Power Supply Current :Idd
4
5
mA/ch. VDD:5V
(* 8)
Notes
* 3. VCM means the common voltage of an input pin (PIN/NIN).
* 4. VIOD = [( high temperature side WST(**)) –( low temperature side WST(**))]/[125°C-(-40°C))]
** WST is MIN. or MAX. value of VIO.
ex.) If high temperature side is MAX. and low temperature side is MIN. the VIOD polarity is
positive. And if high temperature side is MIN. and low temperature side is MAX. the VIOD
polarity is negative.
* 5. CMRR = 20 x Log[(VDD-VSS) / ( α )]
‘( α ) is a Max. value among [(Offset at input = VDD)-(Offset at Input = VSS)] and
[(Offset at input = VDD)-( Offset at input = VDD/2)] and
[(Offset at input = VDD/2)-( Offset at input = VSS)].
* 6. PSRR = 20 x Log[(Max. supply voltage – Min. supply voltage) / (Offset at Max. supply voltage –
Offset at Min. supply voltage)]
* 7. AV = 20×LOG [ ((VDD-0.2)-(VSS+0.2)) /
((Offset at output= VDD-0.2) - (Offset at output = VSS+0.2))]
* 8. It contains consumption of one OPAmp circuit. It doesn't include an output drive current.
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 AC Characteristics
VDD= 5.0V, VCM= VDD/2, VSS= 0V, Ta= -40~125C, unless otherwise noted
Parameter
Min.
Typ.
Max. Units
Conditions
Gain Bandwidth (GBW)
50
MHz Ta=25C
Slew Rate
20
V/s Ta=25C
Input Voltage Noise
10
nVrms @1kHz
:IIN1
/√Hz
5
nVrms @10kHz
:IIN2
/√Hz
THD+N
0.0003
%
Input:1kHz, 1Vrms, Av:1V/V,
VDD=5.0V, BW:20Hz ~ 20kHz
Ta=25C
Overload Recovery
160
nsec AV= -10 times, Input swing:300mV
Time :TOR
(±2.5V) @90%
(* 9)
Input capacitance Differencial
8
pF
Common
7
pF
Maximum Capacitance
1000
pF
If the 10Ω resistor is connected
Loads :CL
in series to the output.
Note
* 9. The definition of “Overload Recovery Time” is following.

Positive side overload recovery time (Time until it returns to VDD/2 from VDD saturation)
Figure 8.1 Positive side overload recovery time
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
Negative side overload recovery time (Time until it returns to VDD/2 from VSS saturation)
Figure 8.2 Negative side overload recovery time
Note
* 10. Notes for a board design
AK2975 is high-bandwidth amplifier. Therefore if large impedance and inductance are included to a
power supply line, the characteristic may get worse. Please place the decoupling capacitor of "0.1F
and 10F" of a low loss near the power supply pin ,between each power supply terminal and a ground.
9.
Typical Operating Characteristics (for reference)
VDD:5.0V, Ta:25C, CL=0pF unless otherwise noted
9.1 Current consumption – Operating temperature characteristics (Vin/Vout: VDD/2)
Figure 9.1 Current consumption
vs. Operating temperature
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.2 Current consumption – Supply voltage characteristics (Vin/Vout: VDD/2)
Figure 9.2 Current consumption
vs. Supply voltage
9.3 Input offset – Temperature characteristics (Vin/Vout: VDD/2)
Figure 9.3 Input offset
vs. Temperature
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.4 Distribution of Input offset drift (VDD:5V,Vin/Vout: VDD/2,Ta:-40 to 125ºC)
Figure 9.4 Input offset drift distribution
9.5 Distribution of Input offset (VDD:5V,Vin/Vout: VDD/2,Ta:-40 to 125ºC)
Figure 9.5 Input offset distribution
9.6 Input Bias current – Temperature characteristics
Figure 9.6 Input Bias current
vs. Temperature
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.7 Output Voltage - Load current characteristics
Figure 9.7 Output Volatge
vs. Load current
9.8 Short circuit current – Supply Voltage characteristics
Figure 9.8 Short curcuit current vs. Supply voltage
9.9 Short circuit current – Temperature characteristics
Figure 9.9 Short curcuit current vs. Temperature
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.10
Closed loop gain – Frequency characteristics
Figure 9.10 Closed loop gain
9.11
Open loop gain – Frequency characteristics
Figure 9.11 Open loop gain
9.12
vs. Frequency
vs. Frequency
Input voltage noise – Frequency characteristics
Figure 9.12 Input voltage noise
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.13
CMRR – Frequency characteristics
Figure 9.13 CMRR
9.14
PSRR – Frequency characteristics
Figure 9.14 PSRR
9.15
vs. Frequency
vs. Frequency
Output Impedance – Frequency characteristics
Figure 9.15 Output Impedance
vs. Frequency
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.16
Maximum output swing – Frequency characteristics
Figure 9.16 Maximum output swing
9.17
THD +Noise
vs. Frequency
– Output amplitude
(V)
Figure 9.17 THD +Noise
9.18
THD +Noise
vs. Output swing
– Frequency characteristics
0.54
1
Figure 9.18 THD +Noise
vs. Frequency
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.19
Small signal step response (CL:0pF)
Figure 9.19 Small signal step response
9.20
Large signal step response (CL:0pF)
Figure 9.19 Large signal step response
9.21
Small output swing – Frequency characteristics (CL:1000pF,RL:10Ω)
Figure 9.21 Small signal step response
9.22
Large signal step response (CL:1000pF,RL:10Ω)
Figure 9.22 Large signal step response
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[ 9. Typical Operating Characteristics (for reference) continuation]
9.23
Over load recovery time
Figure 9.23 Overload recovery time
10. Package
10.1
Marking
-
MSOP8
8
7
6
5
2975
(2)
Y WW A
(1)
(3)
1
2
(4)
(5)
3
4
(1) 1 pin
(2) Part No.(AK2975:2975)
(3) Date code (Year)
(4) Date code (Week)
(5) In-house control code
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10.2
Outline Dimensions
-
MSOP8 Package Outline
(UNIT: mm)
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11. Ordering Guide
AK2975H
-40 ~ 125ºC
8-pin MSOP
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[AK2975]
IMPORTANT NOTICE
0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the
information contained in this document without notice. When you consider any use or
application of AKM product stipulated in this document (“Product”), please make inquiries the
sales office of AKM or authorized distributors as to current status of the Products.
1. All information included in this document are provided only to illustrate the operation and
application examples of AKM Products. AKM neither makes warranties or representations with
respect to the accuracy or completeness of the information contained in this document nor
grants any license to any intellectual property rights or any other rights of AKM or any third party
with respect to the information in this document. You are fully responsible for use of such
information contained in this document in your product design or applications. AKM ASSUMES
NO LIABILITY FOR ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM
THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS.
2. The Product is neither intended nor warranted for use in equipment or systems that require
extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which
may cause loss of human life, bodily injury, serious property damage or serious public impact,
including but not limited to, equipment used in nuclear facilities, equipment used in the
aerospace industry, medical equipment, equipment used for automobiles, trains, ships and
other transportation, traffic signaling equipment, equipment used to control combustions or
explosions, safety devices, elevators and escalators, devices related to electric power, and
equipment used in finance-related fields. Do not use Product for the above use unless
specifically agreed by AKM in writing.
3. Though AKM works continually to improve the Product’s quality and reliability, you are
responsible for complying with safety standards and for providing adequate designs and
safeguards for your hardware, software and systems which minimize risk and avoid situations
in which a malfunction or failure of the Product could cause loss of human life, bodily injury or
damage to property, including data loss or corruption.
4. Do not use or otherwise make available the Product or related technology or any information
contained in this document for any military purposes, including without limitation, for the design,
development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or
missile technology products (mass destruction weapons). When exporting the Products or
related technology or any information contained in this document, you should comply with the
applicable export control laws and regulations and follow the procedures required by such laws
and regulations. The Products and related technology may not be used for or incorporated into
any products or systems whose manufacture, use, or sale is prohibited under any applicable
domestic or foreign laws or regulations.
5. Please contact AKM sales representative for details as to environmental matters such as the
RoHS compatibility of the Product. Please use the Product in compliance with all applicable
laws and regulations that regulate the inclusion or use of controlled substances, including
without limitation, the EU RoHS Directive. AKM assumes no liability for damages or losses
occurring as a result of noncompliance with applicable laws and regulations.
6. Resale of the Product with provisions different from the statement and/or technical features set
forth in this document shall immediately void any warranty granted by AKM for the Product and
shall not create or extend in any manner whatsoever, any liability of AKM.
7. This document may not be reproduced or duplicated, in any form, in whole or in part, without
prior written consent of AKM.
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