ELM854xx CMOS Dual operational amplifier
■General description
ELM854xx is low power consumption CMOS dual OP-AMP with wide range of common mode signal input
voltage and push-pull output stage. With 1.2V single power supply, ELM854xx makes it easy to design power
circuit. ELM854xx is suitable for circuit of portable equipments which require low power consumption or
single power.
■Features
■Application
• Single supply operation
• Low voltage operation
• Low current consumption
• Battery-operated devices
• Micropower signal process
• Low voltage analog circuit
•
•
•
•
: 1.2V≤Vdd≤6.0V
: Typ. 300μA
(Vdd=3.0V, 2Amp. units total)
Common-mode input voltage range : Vss to Vdd-0.3V (Vdd=1.5V)
Vss to Vdd-0.1V (Vdd=3.0V)
: Push-pull
Output stage
: Typ. 1MHz (Vdd=1.5V)
Unity gain bandwidth
Typ. 0.8MHz (Vdd=3.0V)
: SOP-8, TSSOP-8
Package
■Maximum absolute ratings
Parameter
Power supply voltage
Input voltage
Differential input voltage
Output voltage
Output short circuit
Power dissipation
Operating temperature
Storage temperature
Symbol
Vdd
Vin
Vid
Vout
Limit
10
Vss-0.3 to Vdd+0.3
Vdd-Vss
Vss-0.3 to Vdd+0.3
Continuous
300
-20 to +70
-55 to +125
Pd
Top
Tstg
Unit
V
V
V
V
Sec.
mW
°C
°C
■Selection guide
ELM854xx-x
Symbol
a, b
Package
c
Taping direction
AA : SOP-8
BB : TSSOP-8
S : Refer to PKG file
N : Refer to PKG file
9- 1
ELM854 x x - x
↑ ↑ ↑
a b c
ELM854xx CMOS Dual operational amplifier
■Pin configuration
SOP-8 (TOP VIEW)
㪈
TSSOP-8 (TOP VIEW)
㪏
㪘
㪉
㪉
㪙
㪊
㪍
㪋
㪌
Pin No.
1
2
3
4
㪏
㪈
㪎
㪘
Pin No.
5
6
7
8
㪍
㪙
㧗㧙
㪋
Pin name
OUTA
IN-A
IN+A
VSS
㪎
㧙㧗
㪊
㪌
Pin name
IN+B
IN-B
OUTB
VDD
■Standard circuit
㪭㫀㫅
㪂
㪜㪣㪤㪏㪌㪋㫏㫏
㪭㫆㫌㫋
㪄
㪈㪇㪇㫂㱅
㪈㪇㫂㱅
■Electrical characteristics(Vdd=1.5V)
Parameter
Input offset voltage
Symbol
Vio
Input bias current
Common-mode input voltage range
Iib
Vcmr
Maximum output voltage swing
Vouts
Large-signal voltage gain
Common-mode rejection ratio
Avd
CMRR
Supply voltage rejection ratio
PSRR
Current consumption
Iss
Unity gain bandwidth
Slew rate
GBW
SR
Condition
Vin+=Vdd/2,
Unity gain follower
Min.
For CMRR≥45dB
Vid=100mV,
RL=10kΩ to Vss
RL=10kΩ to Vss
RL=10kΩ to Vss
RL=10kΩ to Vss
Vdd=1.35V to 6.0V
Vin+=Vdd/2,
Unity gain follower
0.00
RL=100kΩ, CL=20pF
0.55
9- 2
Vss=0V, Top=25°C
Typ. Max. Unit
±6
mV
1.0
1.20
nA
V
1.40
V
85
65
dB
dB
85
dB
270
1.0
0.85
400
μA
MHz
V/μs
ELM854xx CMOS Dual operational amplifier
■Electrical characteristics(Vdd=3.0V)
Parameter
Symbol
Input offset voltage
Vio
Input bias current
Common-mode input voltage range
Iib
Vcmr
Maximum output voltage swing
Vouts
Large-signal voltage gain
Common-mode rejection ratio
Avd
CMRR
Supply voltage rejection ratio
PSRR
Current consumption
Iss
Unity gain bandwidth
Slew rate
GBW
SR
Condition
Vin+=Vdd/2,
Unity gain follower
Min.
For CMRR≥45dB
Vid=100mV,
RL=10kΩ to Vss
RL=10kΩ to Vss
RL=10kΩ to Vss
RL=10kΩ to Vss
Vdd=2.7V to 6.0V
Vin+=Vdd/2,
Unity gain follower
0.00
RL=100kΩ, CL=20pF
0.40
TSSOP-8
㪜㩷㪣㩷㪤
㪏㩷㪌㩷㪋㩷㪘㩷㪘
㪜㩷㪣㩷㪤
㪏㩷㪌㩷㪋㩷㪸㩷㪹㩷㪺
㪸㩷㪹㩷㪺
No.
a
b
c
Mark
0 to 9
A to M (excepted I)
0 to 9
9- 3
±6
mV
1.0
2.90
nA
V
2.90
V
90
70
dB
dB
90
dB
300
■Marking
SOP-8
Vss=0V, Top=25°㪚
Typ. Max. Unit
Content
Last numeral of A.D.
Assembly month
Lot No.
0.8
0.65
450
μA
MHz
V/μs
ELM854xx CMOS Dual operational amplifier
■Note
1) Common-mode input voltage range
ELM854xx common mode input voltage range is fixed under the condition of CMRR≥45dB; ELM854xx
is able to accept the input above its specification if the degradation of CMRR is not considered. Even if the
input voltage exceeds either positive or negative power voltage, troubles such as reverse of output will not
occur.
As maximum absolute rating, the input voltage is possible within (Vss-0.3)V to (Vdd+0.3)V.
2) Operation from single power source
ELM854xx is designed to be most suitable for single power source; therefore, ELM854xx is able to share
power supply with logic circuit one. Meanwhile, ELM832BW can also operate from double power sources.
To protect power supplies of ELM854xx and logic circuit from noise, please separate wire from power
supply and use decoupling (bypass) capacitor. Using the capacitor can improve PSRR characteristics,
especially on 10kHz to 100kHz or more.
3) Feedback
When OP-AMP circuit is used with feedback resistor, oscillation may happen in the circuit with loop-gain
like unity gain follower.
a) When large feedback resistance is used, the phase margin is decreased by its combination with the
parasitic capacitance of the input part of OP-AMP. In this situation, please connect small capacitor parallelly
with feedback resistor as shown in fig-1.
b) For capacitive load, external resistor in series connection will be effective as shown in fig-2. (R=300 to
500Ω)
c) Being used as an unity gain follow, ELM854xx is able to drive capacitive load of 100pF directly without
oscillation.
a) fig-1
㪭㫀㫅
b) fig-2
㪭㫀㫅
㪂
㪜㪣㪤㪏㪌㪋㫏㫏
㪭㫆㫌㫋
㪄
㪂
㪜㪣㪤㪏㪌㪋㫏㫏
㪩
㪭㫆㫌㫋
㪄
㪚㪣
㪩㪣
4) Unused Amplifier
Two amplifiers will consume power even if only one amplifier is used.
In order to minimize power consumption by the unused amplifier, ELM recommends to connect this
amplifier as voltage follower circuit and the input terminal (IN+) to Vdd.
9- 4
ELM854xx CMOS Dual operational amplifier
■Typical characteristics
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ELM854xx CMOS Dual operational amplifier
■1.5V Performance
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ELM854xx CMOS Dual operational amplifier
■3.0V Performance
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9- 9