UTC OPA2336 Single-supply, micropower cmos operational amplifier Datasheet

UNISONIC TECHNOLOGIES CO., LTD
OPA2336
Preliminary
CMOS IC
SINGLE-SUPPLY,
MICROPOWER CMOS
OPERATIONAL
AMPLIFIERS
„
DESCRIPTION
The UTC OPA2336 is a CMOS operational amplifier. It is
operated on a 2.1V (Min.) single supply. A100kΩ load is driven by
the rail-to-rail output and the accuracy of the output voltage is
ensured at ± 3mV.
The UTC OPA2336 is characterized by its low quiescent current
(20μA/amplifier), low offset voltage (125μV max), low input bias
current (1pA), and high open-loop gain (115dB).
The UTC OPA2336 features completely independent circuitry
for lowest crosstalk and freedom from interaction.
The UTC OPA2336 is particularly designed for battery-powered
applications and the common-mode range extending to the negative
supply makes it ideal for single-supply applications.
In addition to the applications mentioned above, the UTC
OPA2336 is suitable for portable devices, high-Impedance
applications, photodiode, pre-amps, precision integrators, medical
instruments, and test equipment.
„
FEATURES
* Operating on a Single-Supply
* Rail-to-Rail Output (Accuracy: ± 3mv)
* Low Power Dissipation: IQ=20μA/Amplifier
* Low Offset Voltage up to 125μV (MAX.)
* Power Supply Specified from 2.3V to 5.5V
* Halogen Free
„
ORDERING INFORMATION
Ordering Number
Package
Packing
OPA2336G-S08-R
SOP-8
Tape Reel
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Copyright © 2010 Unisonic Technologies Co., Ltd
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OPA2336
„
PIN CONFIGURATION
1
-In A
2
+In A
3
V-
4
A
B
+
-
Out A
+
„
CMOS IC
Preliminary
8
V+
7
Out B
6
-In B
5
+In B
PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
PIN NAME
OUTA
-In A
+In A
V+In B
-in B
Out B
V+
DESCRIPTION
Output of channel A
Negative Input of channel A
Positive Input of channel A
Ground
Positive Input of channel B
Negative Input of channel B
Output of channel B
Power supply
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OPA2336
„
CMOS IC
Preliminary
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VS
7.5
V
Signal Input Terminals Voltage (Note 2)
VIT
(V-)-0.3~(V+)+0.3
V
Signal Input Terminals Current (Note 2)
IIT
10
mA
Output Short-Circuit (Note 3)
IOS
Continuous
A
Operating Junction Temperature
TOPR
-40~ +125
°C
Storage Temperature
TSTG
-55~ +125
°C
Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. Input terminals are diode-clamped to the power supply rails. Input signals that can swing more than 0.3V
beyond the supply rails should be current-limited to 10mA or less.
3. Short-circuit to ground, one amplifier per package.
„
THERMAL DATA
PARAMETER
Junction to Ambient
„
SYMBOL
RATINGS
UNIT
θJA
150
°C/W
ELECTRICAL CHARACTERISTICS
(At TA=+25°C, VS=+5V,RL=25kΩ connected to VS/2, unless otherwise specified.)
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
Input Offset Voltage vs. Temperature
Input Offset Voltage vs. Power Supply
Over Temperature
Channel Separation, DC
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
Input Offset Current
NOISE
Input Voltage Noise, f = 0.1 ~ 10Hz
Input Voltage Noise Density, f = 1kHz
Current Noise Density, f = 1kHz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
Over Temperature
INPUT IMPEDANCE
Differential
Common-Mode
SYMBOL
VI(OFF)
dVOS/dT
PSRR
TEST CONDITIONS
MIN
VS = 2.3V ~ 5.5V
VS = 2.3V ~ 5.5V
TYP
MAX
UNIT
±60
±1.5
25
±125
µV
µV/°C
µV/V
µV/V
µV/V
100
130
0.1
IBIAS
±1
IO(OFF)
±1
eN
iN
3
40
30
VCM
CMRR
-0.2V<VCM<(V+)-1V
-0.2V<VCM<(V+)-1V
-0.2
80
76
CM
±10
±60
±10
pA
pA
pA
µVP-P
nV/√Hz
fA/√Hz
90
(V+)-1
V
dB
dB
1013||2
1013||4
Ω||pF
Ω||pF
115
dB
OPEN-LOOP GAIN
Open-Loop Voltage Gain
AOL
Over Temperature
Open-Loop Voltage Gain
AOL
Over Temperature
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RL=25kΩ,
100mV<VOUT<(V+)-100mV
100
RL=25kΩ,
100mV<VOUT<(V+)-100mV
100
RL=5kΩ,
500mV<VOUT <(V+)-500mV
90
RL=5kΩ,
500mV<VOUT <(V+)-500mV
90
dB
106
dB
dB
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OPA2336
„
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS(Cont.)
FREQUENCY RESPONSE
Gain-Bandwidth Product
GBW
VS=5V, G=1
100
kHZ
Slew Rate
SR
VS=5V, G=1
0.03
V/µs
VIN · G = VS
Overload Recovery Time
100
µs
OUTPUT
Voltage Output Swing from Rail (Note 2)
VOS
RL=100kΩ, AOL≥70dB
3
mV
Voltage Output Swing from Rail (Note 2)
RL=25kΩ, AOL≥90dB
20
100
mV
Over Temperature
RL=25kΩ, AOL≥90dB
100
mV
Voltage Output Swing from Rail (Note 2)
RL=5kΩ, AOL≥90dB
70
500
mV
Over Temperature
RL=5kΩ, AOL≥90dB
500
mV
Short-Circuit Current
ISC
±5
mA
Capacitive Load Drive
CLOAD
pF
POWER SUPPLY
Specified Voltage Range
VS
2.3
5.5
V
Minimum Operating Voltage
2.1
V
Quiescent Current (Per Amplifier)
IQ
IOUT=0
20
32
µA
Over Temperature
IOUT=0
36
µA
TEMPERATURE RANGE
Specified Range
-40
+85
°C
Operating Range
-55
+125
°C
Storage Range
-55
+125
°C
Note: 1. VS= +5V.
2. Output voltage swings are measured between the output and positive and negative power-supply rails.
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OPA2336
„
CMOS IC
Preliminary
APPLICATION INFORMATION
The UTC OPA2336 is a CMOS operational amplifier, its outstanding features and functions make it suitable for
several applications. The UTC OPA2336 is unity-gain stable and can be protected under the reverse battery
voltages conditions. 0.01μF ceramic capacitors are required to bypass the power supply.
OPERATING VOLTAGE
The UTC OPA2336 is operating on a single supply ranging from 2.1V to +5.5V, most behavior remains
unchanged throughout the full operating voltage range. The UTC OPA2336 is fully specified for operation from
+2.3V to +5.5V; a single limit applies over the supply range. Moreover, this device performs well over a temperature
range of -40°C to +85°C.
INPUT VOLTAGE
The UTC OPA2336 allows input common-mode range varies from (V-)-0.2V to (V+)-1V, normal behaviors should
operate within this range. In addition, the absolute maximum input voltage is 300mV beyond the supplies. Thus,
inputs greater than the input common-mode range but less than maximum input voltage, while not valid, will not
cause any damage to the op-amp.
Normally, input bias current is approximately 1pA. However, the input pin may be applied to an excess inrush
current, which is encountered when input voltages are higher than the power supplies. This device is not damaged
unless the current on the input pins is less than 10mA. This is easily accomplished with an input resistor, as shown
in Figure 1.
+5V
Ioverlaod
10mA max
VIN
5kΩ
OPA2336
VOUT
+
Figure 1. Input Current Protection for Voltages
Exceeding the Supply Voltage
CAPACITIVE LOAD AND STABILITY
The UTC OPA2336 under certain conditions may become unstable. For device’s stability, there are many
factors considered besides the amplifier gain, load value and so on.
The UTC OPA2336 can drive a wide range of capacitive loads, it can drive approximately 10,000pF when
properly configured. An op amp in unity-gain configuration is the most vulnerable to capacitive load. The capacitive
load reacts with the op amp’s output resistance, along with any additional load resistance, to create a pole in the
response which degrades the phase margin. In unity gain, 300pF capacitive load is to be optimal for the UTC
OPA2336. Increasing gain enhances the amplifier’s ability to drive loads beyond this level.
In order to improve capability of driving capacitive load in the unity-gain configuration, a 50Ω to 100Ω resistor is
expected to locate inside the feedback loop, as shown in Figure 2. This reduces ringing with large capacitive loads
while maintaining DC accuracy.
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QW-R502-392.a
OPA2336
„
CMOS IC
Preliminary
APPLICATION INFORMATION (Cont.)
OPA2336
VIN
RS
100Ω
VOUT
+
CL
RL
Figure 2. Series Resistor in Unity-Gain Configuration
Improves Capacitive Load Drive
The resistor can be also located in series with the output outside of the feedback loop, if paralleling a resistive
load to the capacitive load, a voltage divider is generated with it. This introduces a Direct Current (DC) error at the
output, however, this error may be insignificant. For instance, with RL= 100kΩand RS= 100Ω, there is only about a
0.1% error at the output.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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