MIC7300YMM-TR [MICROCHIP]
OP-AMP, 9000uV OFFSET-MAX, 0.45MHz BAND WIDTH, PDSO8;
| 型号： | MIC7300YMM-TR |
| 厂家： | 
MICROCHIP |
| 描述： | OP-AMP, 9000uV OFFSET-MAX, 0.45MHz BAND WIDTH, PDSO8 放大器 光电二极管 |
| 文件： | 总12页 (文件大小：68K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC7300
High-Output Drive Rail-to-Rail Op Amp
General Description
Features
The MIC7300 is a high-performance CMOS operational
amplifier featuring rail-to-rail input and output with strong
output drive capability. It is able to source and sink in excess
of 80mA into large capacitive loads.
• Small footprint SOT-23-5 and power MSOP-8 packages
• >80mA peak output sink and source with 5V supply
• Drives large capacitive loads (6000pF with 10V supply)
• Guaranteed 2.2V, 3V, 5V, and 10V performance
• 500kHz gain-bandwidth product
The input common-mode range extends beyond the rails by
300mV, and the output voltage typically swings to within
150µV of both rails when driving a 100kΩ load.
• 0.01% total harmonic distortion at 1kHz (10V, 2kΩ)
• 1mA typical power supply current at 5V
Applications
• Battery-powered instrumentation
• PCMCIA, USB peripherals
The amplifier operates from 2.2V to 10V and is fully specified
at 2.2V, 3V, 5V, and 10V. Gain bandwidth and slew rate are
500kHz and 0.5V/µs, respectively.
The MIC7300 is available in Micrel’s IttyBitty™ SOT-23-5
package for space-conscious circuits and in high-power
MM8™ 8-lead MSOP for improved heat dissipation in higher
power applications.
• Portable computers and PDAs
Ordering Information
Pin Configurations
Part Number
Standard
Pb-free
Temp. Range
–40°C to +85°C
–40°C to +85°C
Package
SOT-23-5
MSOP-8
IN+ V– OUT
MIC7300BM5
MIC7300BMM
MIC7300YM5
MIC7300YMM
3
2
1
Part
Identification
A17
4
5
IN–
V+
SOT-23-5 (M5)
Functional Configuration
IN+ V– OUT
3
2
1
V+
IN–
V–
V–
V–
V–
1
2
3
4
8
7
6
5
IN+
4
5
IN–
V+
OUT
SOT-23-5 (M5)
MSOP-8 (MM)
Pin Description
Pin Number
SOT-23-5
Pin Number
MSOP-8
Pin Name
Pin Function
1
2
4
OUT
V–
Amplifier Output
5–8
Negative Supply: Negative supply for split supply application or ground for
single supply application.
3
4
5
3
2
1
IN+
IN–
V+
Noninverting Input
Inverting Input
Positive Supply
IttyBitty and MM8 are trademarks of Micrel, Inc.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
June 2005
1
MIC7300
MIC7300
Micrel
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 2)
Supply Voltage (V – V )...........................................12V
Supply Voltage (V – V ).............................. 2.2V to 10V
V+
V–
V+ V–
Differential Input Voltage (V
– V ) .......................±12V
Junction Temperature (T ) ......................... –40°C to +85°C
IN+
IN–
J
I/O Pin Voltage (V , V
), Note 3
Package Thermal Resistance, Note 5
IN
OUT
.............................................V + 0.3V to V – 0.3V
SOT-23-5 (θ ) ..................................................260°C/W
V+
V–
JA
MSOP-8 (θ ) ......................................................85°C/W
Junction Temperature (T ) ...................................... +150°C
JA
J
Max. Power Dissipation............................................ Note 4
Storage Temperature ............................... –65°C to +150°C
Lead Temperature (soldering, 10 sec.) ..................... 260°C
ESD, Note 6
DC Electrical Characteristics (2.2V)
VV+ = +2.2V, VV– = 0V, VCM = VOUT = VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
Symbol
VOS
Parameter
Condition
Min
Typ
1.0
1.0
0.5
0.25
>1
Max
Units
mV
µV/°C
pA
Input Offset Voltage
9
TCVOS
IB
Input Offset Voltage Average Drift
Input Bias Current
IOS
Input Offset Current
pA
RIN
Input Resistance
TΩ
dB
CMRR
VCM
Common-Mode Rejection Ratio
Input Common-Mode Voltage
0V ≤ VCM ≤ 2.2V, Note 9
input low, CMRR ≥ 45dB
input high, CMRR ≥ 45dB
45
65
–0.3
2.5
75
0.0
V
2.2
55
V
±PSRR
CIN
Power Supply Rejection Ratio
Common-Mode Input Capacitance
Output Swing
VV+
=
VV– = 1.1V to 2.5V, VCM = 0
dB
3
pF
VO
output high, RL = 100k,
specified as VV+ – VOUT
0.15
1
1
mV
mV
output low, RL = 100k
0.15
10
1
1
mV
mV
output high, RL = 2k
specified as VV+ – VOUT
33
50
mV
mV
output low, RL = 2k
10
33
50
mV
mV
output high, RL = 600Ω
specified as VV+ – VOUT
33
110
165
mV
mV
output low, RL = 600Ω
33
110
165
mV
mV
ISC
IS
Output Short Circuit Current
Supply Current
sinking or sourcing, Note 8
20
40
mA
mA
VOUT = V+/2
0.7
2.0
AC Electrical Characteristics (2.2V)
VV+ = 2.2V, VV– = 0V, VCM = VOUT = VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
Symbol
SR
Parameter
Condition
Min
Typ
0.5
0.55
80
Max
Units
V/µs
MHz
°
Slew Rate
GBW
φm
Gain-Bandwidth Product
Phase Margin
CL = 0pF
CL = 2500pF
40
°
Gm
Gain Margin
10
dB
MIC7300
2
June 2005
MIC7300
Micrel
DC Electrical Characteristics (3.0V)
VV+ = +3.0V, VV– = 0V, VCM = VOUT = VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
Symbol
VOS
Parameter
Condition
Min
Typ
1.0
1.0
0.5
0.25
>1
Max
Units
mV
µV/°C
pA
Input Offset Voltage
9
TCVOS
IB
Input Offset Voltage Average Drift
Input Bias Current
IOS
Input Offset Current
pA
RIN
Input Resistance
TΩ
dB
CMRR
VCM
Common-Mode Rejection Ratio
Input Common-Mode Voltage
0V ≤ VCM ≤ 3.0V, Note 9
input low, CMRR ≥ 50dB
input high, CMRR ≥ 50dB
50
70
–0.3
3.3
75
0
V
3.0
55
V
±PSRR
CIN
Power Supply Rejection Ratio
Common-Mode Input Capacitance
Output Swing
VV+
=
VV– = 1.5V to 5.0V, VCM = 0
dB
3
pF
VOUT
output high, RL = 100k
specified as VV+ – VOUT
0.2
1
1
mV
mV
output low, RL = 100k
0.2
10
10
33
33
1
1
mV
mV
output high, RL = 2k
specified as VV+ – VOUT
33
50
mV
mV
output low, RL = 2k
33
50
mV
mV
output high, RL = 600Ω
specified as VV+ – VOUT
110
165
mV
mV
output low, RL = 600Ω
110
165
mV
mV
ISC
IS
Output Short Circuit Current
Supply Current
sinking or sourcing, Note 8
60
95
mA
mA
0.8
2.2
AC Electrical Characteristics (3V)
VV+ = 3V, VV– = 0V, VCM = 1.5V, VOUT = VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
Symbol
SR
Parameter
Condition
Min
Typ
0.5
0.45
85
Max
Units
V/µs
MHz
°
Slew Rate
GBW
φm
Gain-Bandwidth Product
Phase Margin
CL = 0pF
CL = 3500pF
40
°
Gm
Gain Margin
10
dB
June 2005
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MIC7300
MIC7300
Micrel
DC Electrical Characteristics (5V)
V
= +5.0V, V = 0V, V
= 1.5V, V
= V /2; R = 1MΩ; T = 25°C, bold values indicate –40°C ≤ T ≤ +85°C; Note 7; unless noted
V+
V–
CM
OUT
V+
L
J
J
Symbol
VOS
Parameter
Input Offset Voltage
Condition
Min
Typ
1.0
1.0
0.5
0.25
>1
Max
Units
mV
µV/°C
pA
9
TCVOS
IB
Input Offset Voltage Average Drift
Input Bias Current
IOS
Input Offset Current
pA
RIN
Input Resistance
TΩ
dB
CMRR
VCM
Common-Mode Rejection Ratio
Input Common-Mode Voltage
0V ≤ VCM ≤ 5V, Note 9
input low, CMRR ≥ 55dB
input high, CMRR ≥ 55dB
55
80
–0.3
5.3
75
–0.0
V
5.0
55
V
±PSRR
CIN
Power Supply Rejection Ratio
Common-Mode Input Capacitance
Output Swing
VV+
=
VV– = 2.5V to 5.0V, VCM = 0
dB
3
pF
VOUT
output high, RL = 100k
specified as VV+ – VOUT
0.3
1.0
1.5
mV
mV
output low, RL = 100k
0.3
15
15
50
50
1.0
1.5
mV
mV
output high, RL = 2k
specified as VV+ – VOUT
50
75
mV
mV
output low, RL = 2k
50
75
mV
mV
output high, RL = 600Ω
specified as VV+ – VOUT
165
250
mV
mV
output low, RL = 600Ω
165
250
mV
mV
ISC
IS
Output Short Circuit Current
Supply Current
sinking or sourcing, Note 8
85
105
1.0
mA
mA
VOUT = V+/2
2.8
AC Electrical Characteristics (5V)
VV+ = 5V, VV– = 0V, VCM = 1.5V, VOUT = VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
THD
Total Harmonic Distortion
f = 1kHz, AV = –2,
0.05
%
RL = 2kΩ, VOUT = 4.0 VPP
SR
Slew Rate
0.5
0.4
85
40
10
V/µs
MHz
°
GBW
φm
Gain-Bandwidth Product
Phase Margin
CL = 0pF
CL = 4500pF
°
Gm
Gain Margin
dB
MIC7300
4
June 2005
MIC7300
Micrel
DC Electrical Characteristics (10V)
V
= +10V, V = 0V, V
= 1.5V, V
= V /2; R = 1MΩ; T = 25°C, bold values indicate –40°C ≤ T ≤ +85°C; Note 7; unless noted
V+
V–
CM
OUT
V+
L
J
J
Symbol
VOS
Parameter
Input Offset Voltage
Condition
Min
Typ
1.0
Max
Units
mV
µV/°C
pA
9
TCVOS
IB
Input Offset Voltage Average Drift
Input Bias Current
1.0
0.5
IOS
Input Offset Current
0.25
>1
pA
RIN
Input Resistance
TΩ
CMRR
VCM
Common-Mode Rejection Ratio
Input Common-Mode Voltage
0V ≤ VCM ≤ 10V, Note 9
60
85
dB
input low, V+ = 10V, CMRR ≥ 60dB
input high, V+ = 10V, CMRR ≥ 60dB
–0.3
10.3
75
–0.0
V
10.0
55
V
±PSRR
Power Supply Rejection Ratio
Large Signal Voltage Gain
VV+
=
VV– = 2.5V to 5.0V, VCM = 0
dB
AV
sourcing or sinking,
80
340
V/mV
RL = 2k, Note 10
sourcing or sinking,
RL = 600Ω, Note 10
15
300
V/mV
pF
CIN
Common-Mode Input Capacitance
Output Swing
3
VOUT
output high, RL = 100k
specified as VV+ – VOUT
0.5
1.5
2.5
mV
mV
output low, RL = 100k
0.5
24
24
80
80
1.5
2.5
mV
mV
output high, RL = 2k
specified as VV+ – VOUT
80
120
mV
mV
output low, RL = 2k
80
120
mV
mV
output high, RL = 600Ω
specified as VV+ – VOUT
270
400
mV
mV
output low, RL = 600Ω
270
400
mV
mV
ISC
IS
Output Short Circuit Current
Supply Current
sinking or sourcing, Notes 8
90
115
1.5
mA
mA
VOUT = V+/2
4.0
AC Electrical Characteristics (10V)
VV+ = 10V, VV– = 0V, VCM = 1.5V, VOUT = VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
THD
Total Harmonic Distortion
f = 1kHz, AV = –2,
0.01
%
RL = 2k, VOUT = 8.5 VPP
SR
Slew Rate
V+ = 10V, Note 11
0.5
V/µs
V/µs
GBW
Gain-Bandwidth Product
Phase Margin
0.37
85
MHz
φm
CL = 0pF
°
°
CL = 6000pF
40
Gm
en
Gain Margin
10
dB
Input-Referred Voltage Noise
f = 1kHz, VCM = 1V
f = 1kHz
37
nV/ Hz
in
Input-Referred Current Noise
1.5
fA/ Hz
June 2005
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MIC7300
MIC7300
Micrel
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. I/O Pin Voltage is any external voltage to which an input or output is referenced.
Note 4. The maximum allowable power dissipation is a function of the maximum junction temperature, T
; the junction-to-ambient thermal
J(max)
resistance, θ ; and the ambient temperature, T . The maximum allowable power dissipation at any ambient temperature is calculated using:
JA
A
P
= (T
– T ) ÷ θ . Exceeding the maximum allowable power dissipation will result in excessive die temperature.
D
J(max) A JA
Note 5. Thermal resistance, θ , applies to a part soldered on a printed-circuit board.
JA
Note 6. Devices are ESD protected; however, handling precautions are recommended.
Note 7. All limits guaranteed by testing or statistical analysis.
Note 8. Continuous short circuit may exceed absolute maximum T under some conditions.
J
Note 9. CMRR is determined as follows: The maximum ∆V over the V
range is divided by the magnitude of the V
range. The measurement
OS
CM
CM
points are: V , (V – V )/2, and V
.
V–
V+
V–
V+
Note 10. R connected to 5V. Sourcing: 5V ≤ V
≤ 10V. Sinking: 2.5V ≤ V
≤ 5V.
OUT
L
OUT
Note 11. Device connected as a voltage follower with a 10V step input. The value is the positive or negative slew rate, whichever is slower.
MIC7300
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June 2005
MIC7300
Micrel
Typical Characteristics
Input Current vs.
Junction Temperature
10000
1000
100
10
TA = 25°C
1
-40
0
40
80
120 160
JUNCTION TEMPERATURE (°C)
Sink / Source Currents
vs. Output Voltage
1000
100
10
TA = 25°C
1
0.1
0.01
0.001
0.01
0.1
1
10
OUTPUT VOLTAGE (V)
Capacitive Load Capability
vs. Supply Voltage
7000
6000
5000
4000
3000
2000
1000
TA = 25°C
2
4
6
8
10
SUPPLY VOLTAGE (V)
June 2005
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MIC7300
MIC7300
Micrel
Output stage power (P ) is the product of the output stage
Application Information
Input Common-Mode Voltage
O
voltage drop (V
) and the output (load) current (I
).
DROP
OUT
Total on-chip power dissipation is:
The MIC7300 tolerates input overdrive by at least 300mV
beyond either rail without producing phase inversion.
P = P + P
D
S
O
P = V I + V I
DROP OUT
D
S S
If the absolute maximum input voltage is exceeded, the input
current should be limited to ±5mA maximum to prevent
reducing reliability. A 10kΩ series input resistor, used as a
currentlimiter,willprotecttheinputstructurefromvoltagesas
large as 50V above the supply or below ground. See Figure
1.
where:
P = total on-chip power
D
P = supply power dissipation
S
P = output power dissipation
O
V = V – V
V–
S
V+
I = power supply current
S
V
V
= V – V
(sourcing current)
(sinking current)
DROP
V+
OUT
VOUT
RIN
= V
– V
V–
VIN
DROP
OUT
10kΩ
The above addresses only steady state (dc) conditions. For
non-dc conditions the user must estimate power dissipation
based on rms value of the signal.
Figure 1. Input Current-Limit Protection
Output Voltage Swing
Sink and source output resistances of the MIC7300 are
equal. Maximum output voltage swing is determined by the
load and the approximate output resistance. The output
resistance is:
The task is one of determining the allowable on-chip power
dissipation for operation at a given ambient temperature and
power supply voltage. From this determination, one may
calculate the maximum allowable power dissipation and,
after subtracting P , determine the maximum allowable load
S
V
DROP
current,whichinturncanbeusedtodeterminetheminiumum
load impedance that may safely be driven. The calculation is
summarized below.
R
=
OUT
I
LOAD
V
is the voltage dropped within the amplifier output
DROP
stage. V
and I
can be determined from the V
T
− T
DROP
LOAD
O
J(max) A
P
=
(outputswing)portionoftheappropriateElectricalCharacter-
istics table. I is equal to the typical output high voltage
D(max)
θ
JA
LOAD
minus V+/2 and divided by R
Electrical Characteristics DC (5V) table, the typical output
high voltage using a 2kΩ load (connected to V+/2) is 4.985V,
. For example, using the
θ
θ
= 260°C/W
= 85°C/W
LOAD
JA(SOT-23-5)
JA(MSOP-8)
which produces an I
of:
LOAD
Driving Capacitive Loads
4.985V − 2.5V
2kΩ
Drivingacapacitiveloadintroducesphase-lagintotheoutput
signal,andthisinturnreducesop-ampsystemphasemargin.
The application that is least forgiving of reduced phase
margin is a unity gain amplifier. The MIC7300 can typically
drive a 2500pF capacitive load connected directly to the
output when configured as a unity-gain amplifier and pow-
ered with a 2.2V supply. At 10V operation the circuit typically
drives 6000pF. Phase margin is typically 40°.
.
= 1.243mA
Voltage drop in the amplifier output stage is:
V
V
= 5.0V – 4.985V
DROP
= 0.015V
DROP
Becauseofoutputstagesymmetry,thecorrespondingtypical
output low voltage (0.015V) also equals V
. Then:
DROP
Using Large-Value Feedback Resistors
0.015V
R
=
= 12Ω
OUT
A large-value feedback resistor (> 500kΩ) can reduce the
phase margin of a system. This occurs when the feedback
resistor acts in conjunction with input capacitance to create
phase lag in the feedback signal. Input capacitance is usually
a combination of input circuit components and other parasitic
capacitance, such as amplifier input capacitance and stray
printed circuit board capacitance.
0.001243A
Power Dissipation
The MIC7300 output drive capability requires considering
power dissipation. If the load impedance is low, it is possible
to damage the device by exceeding the 125°C junction
temperature rating.
On-chip power consists of two components: supply power
and output stage power. Supply power (P ) is the product of
Figure 2 illustrates a method of compensating phase lag
caused by using a large-value feedback resistor. Feedback
S
the supply voltage (V = V – V ) and supply current (I ).
S
V+
V–
S
capacitor C introduces sufficient phase lead to overcome
FB
MIC7300
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June 2005
MIC7300
Micrel
V+
the phase lag caused by feedback resistor R and input
FB
2.2V to 10V
capacitance C . The value of C is determined by first
IN
FB
3
4
5
MIC7300
estimating C and then applying the following formula:
VIN
0V to V+
IN
1
VOUT
0V to V+
RIN × CIN ≤ RFB × CFB
2
CFB
RFB
VOUT = VIN
Figure 4. Voltage Follower/Buffer
RIN
VIN
VOUT
VS
CIN
0.5V to Q1 VCEO(sus)
VOUT
0V to V+
V+
2.2V to 10V
Figure 2. Cancelling Feedback Phase Lag
3
4
5
MIC7300
VIN
0V to 2V
IOUT
1
SinceasignificantpercentageofC maybecausedbyboard
IN
Q1
2N3904
layout, it is important to note that the correct value of C may
change when changing from a breadboard to the final circuit
layout.
VCEO = 40V
IC(max) = 200mA
FB
2
{
RS
10Ω
⁄2W
Change Q1 and RS
for higher current
and/or different gain.
1
Typical Circuits
Some single-supply, rail-to-rail applications for which the
MIC7300 is well suited are shown in the circuit diagrams of
Figures 3 through 7.
V
IN
I
=
= 100mA/V as shown
OUT
R
S
V+
Figure 5. Voltage-Controlled Current Sink
2.2V to 10V
R4
3
4
5
2
MIC7300
VIN
V +
100k
C1
1
VOUT
0V to V+
V+
0.001µF
0V to
AV
4
3
5
MIC7300
1
VOUT
R2
V+
0V
2
910k
R1
100k
R4
R2
V+
100k
100k
R3
100k
Figure 3a. Noninverting Amplifier
Figure 6. Square Wave Oscillator
100
V+
CIN
R1
R2
33k
330k
V+
R2
R1
AV = 1+
≈ 10
4
3
5
MIC7300
COUT
VOUT
1
0V
0
RL
2
0
100
V
(V)
IN
R3
V+
R2 330k
= = −10
Figure 3b. Noninverting Amplifier Behavior
330k
AV = −
R4
330k
C1
1µF
R1 33k
Figure 7. AC-Coupled Inverting Amplifier
June 2005
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MIC7300
MIC7300
Micrel
Package Information
1.90 (0.075) REF
0.95 (0.037) REF
1.75 (0.069) 3.00 (0.118)
1.50 (0.059) 2.60 (0.102)
DIMENSIONS:
MM (INCH)
1.30 (0.051)
0.90 (0.035)
3.02 (0.119)
2.80 (0.110)
0.20 (0.008)
0.09 (0.004)
10°
0°
0.15 (0.006)
0.00 (0.000)
0.50 (0.020)
0.35 (0.014)
0.60 (0.024)
0.10 (0.004)
SOT-23-5 (M5)
0.122 (3.10)
0.112 (2.84)
0.199 (5.05)
0.187 (4.74)
DIMENSIONS:
INCH (MM)
0.120 (3.05)
0.116 (2.95)
0.036 (0.90)
0.032 (0.81)
0.043 (1.09)
0.038 (0.97)
0.012 (0.30) R
0.007 (0.18)
0.005 (0.13)
0.008 (0.20)
0.004 (0.10)
5° MAX
0° MIN
0.012 (0.03)
0.012 (0.03) R
0.0256 (0.65) TYP
0.039 (0.99)
0.035 (0.89)
0.021 (0.53)
8-Pin MSOP (MM)
MIC7300
10
June 2005
MIC7300
Micrel
June 2005
11
MIC7300
MIC7300
Micrel
MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2005 Micrel Incorporated
MIC7300
12
June 2005
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