MIC7111YM5-TR [MICREL]
1.8V to 11V, 15 μA, 25 kHz GBW, Rail-to-Rail Input and Output Operational Amplifier;
| 型号： | MIC7111YM5-TR |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | 1.8V to 11V, 15 μA, 25 kHz GBW, Rail-to-Rail Input and Output Operational Amplifier |
| 文件： | 总8页 (文件大小：76K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC7111
1.8V IttyBitty™ Rail-to-Rail Input/Output Op Amp
Preliminary Information
General Description
Features
The MIC7111 is a micropower operational amplifier featuring
rail-to-rail input and output performance in Micrel’s IttyBitty
SOT-23-5 package. The MIC7111 is ideal for systems where
small size is a critical consideration.
• Small footprint SOT-23-5 package
• Guaranteed performance at 1.8V, 2.7V, 5V, and 10V
• 15µA typical supply current at 1.8V
• 25kHz gain-bandwidth at 5V
™
• Output swing to within 1mV of rails
with 1.8V supply and 100kΩ load
• Suitable for driving capacitive loads
The MIC7111 is designed to operate from 1.8V to 11V power
supplies.
The MIC7111 benefits small battery operated portable elec-
tronic devices where small size and the ability to place the
amplifier close to the signal source are primary design
concerns.
Applications
• Wireless and cellular communications
• GaAs RF amplifier bias amplifier
• Current sensing for battery chargers
• Reference voltage buffer
For other package options, please contact the factory.
• Transducer linearization and interface
• Portable computing
Ordering Information
Part Number
Junction Temp. Range
Package
MIC7111BM5
–40°C to +85°C
SOT-23-5
Functional Configuration
Pin Configuration
IN+ V+ OUT
IN+ V+ OUT
3
2
1
3
2
1
Part
Identification
A13
4
5
4
5
IN–
V–
IN–
V–
SOT-23-5 (M5)
Pin Description
Pin Number
Pin Name
Pin Function
1
2
3
4
5
OUT
V+
Amplifier Output
Positive Supply
Noninverting Input
Inverting Input
Negative Suppy
IN+
IN–
V–
IttyBitty is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
June 1998
1
MIC7111
MIC7111
Micrel
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 1)
Supply Voltage (V – V )...........................................12V
Supply Voltage (V – V ).............................. 1.8V to 11V
V+
V–
V+ V–
Differential Input Voltage (V
– V ) ...........±(V – V
)
Junction Temperature (T ) ......................... –40°C to +85°C
J
IN+
IN–
V+
V–
I/O Pin Voltage (V , V
), Note 2
Max. Junction Temperature (T
), Note 3 ........... +85°C
IN
OUT
J(max)
.............................................V + 0.3V to V – 0.3V
Package Thermal Resistance (θ ), Note 4..........325°C/W
V+
V–
JA
Junction Temperature (T ) ...................................... +150°C
Max. Power Dissipation............................................ Note 3
J
Storage Temperature ............................... –65°C to +150°C
Lead Temperature (soldering, 10 sec.) ..................... 260°C
ESD, Note 5.................................................................. 2kV
DC Electrical Characteristics (1.8V)
VV+ = +1.8V, VV– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
VOS
Input Offset Voltage
0.9
7
9
mV
mV
TCVOS
IB
Input Offset Voltage
Temperature Drift
2.0
1
µV/°C
Input Bias Current
Input Offset Current
Input Resistance
10
500
pA
pA
IOS
0.01
0.5
75
pA
pA
RIN
>10
85
TΩ
+PSRR
Positive Power Supply
Rejection Ratio
1.8V ≤ VV+ ≤ 5V, VV– = 0V,
VCM = VOUT = 0.9V
60
60
50
dB
–PSRR
Negative Power Supply
Rejection Ratio
–1.8V ≤ VV– ≤ –5V, VV+ = 0V,
VCM = VOUT = –0.9V
85
dB
CMRR
CIN
Common-Mode Rejection Ratio
Common Mode Input Capacitance
Output Voltage Swing
VCM = –0.2V to +2.0V
70
3
dB
pF
VOUT
output high, RL = 100k,
specified as VV+ – VOUT
0.14
1
1
mV
mV
output low, RL = 100k
0.14
6.8
1
1
mV
mV
output high, RL = 2k,
specified as VV+ – VOUT
23
34
mV
mV
output low, RL = 2k
6.8
23
34
mV
mV
ISC
AVOL
Is
Output Short Circuit Current
sourcing, VOUT = 0V
sinking, VOUT = 1.8V
sourcing
15
15
25
25
mA
mA
Note 6
Voltage Gain
400
400
15
V/mV
V/mV
µA
sinking
Supply Current
VV+ = 1.8V, VOUT = VV+/2
35
AC Electrical Characteristics (1.8V)
V+ = +1.8V, V– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
SR
Slew Rate
voltage follower, 1V step, RL = 100k@0.9V
VOUT = 1VP–P
0.015
V/µs
GBW
Gain Bandwidth Product
25
kHz
MIC7111
2
June 1998
MIC7111
Micrel
DC Electrical Characteristics (2.7V)
VV+ = +2.7V, VV– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
VOS
Input Offset Voltage
0.9
7
9
mV
mV
TCVOS
IB
Input Offset Voltage
Temperature Drift
2.0
1
µV/°C
Input Bias Current
Input Offset Current
Input Resistance
10
500
pA
pA
IOS
0.01
0.5
75
pA
pA
RIN
>10
90
TΩ
+PSRR
Positive Power Supply
Rejection Ratio
2.7V ≤ VV+ ≤ 5V, VV– = 0V,
VCM = VOUT = 1.35V
60
60
52
dB
–PSRR
Negative Power Supply
Rejection Ratio
–2.7V ≤ VV– ≤ –5V, VV+ = 0V,
VCM = VOUT = –1.35V
90
dB
CMRR
CIN
Common-Mode Rejection Ratio
Common Mode Input Capacitance
Output Voltage Swing
VCM = –0.2V to +2.9V
75
3
dB
pF
VOUT
output high, RL = 100k,
specified as VV+ – VOUT
0.2
1
1
mV
mV
output low, RL = 100k
0.2
10
10
1
1
mV
mV
output high, RL = 2k,
specified as VV+ – VOUT
33
50
mV
mV
output low, RL = 2k
33
50
mV
mV
ISC
AVOL
Is
Output Short Circuit Current
sourcing, VOUT = 0V
sinking, VOUT = 2.7V
sourcing
30
30
50
50
mA
mA
Note 6
Voltage Gain
400
400
17
V/mV
V/mV
µA
sinking
Supply Current
VV+ = 2.7V, VOUT = VV+/2
42
AC Electrical Characteristics (2.7V)
V+ = +2.7V, V– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
SR
Slew Rate
voltage follower, 1V step, RL = 100k@1.35V
VOUT = 1VP–P
0.015
V/µs
GBW
Gain Bandwidth Product
25
kHz
June 1998
3
MIC7111
MIC7111
Micrel
DC Electrical Characteristics (5V)
VV+ = +5.0V, VV– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
VOS
Input Offset Voltage
0.9
7
9
mV
mV
TCVOS
IB
Input Offset Voltage
Temperature Drift
2.0
1
µV/°C
Input Bias Current
Input Offset Current
Input Resistance
10
500
pA
pA
IOS
0.01
0.5
75
pA
pA
RIN
>10
95
TΩ
+PSRR
Positive Power Supply
Rejection Ratio
5V ≤ VV+ ≤ 10V, VV– = 0V,
VCM = VOUT = 2.5V
65
65
57
dB
–PSRR
Negative Power Supply
Rejection Ratio
–5V ≤ VV– ≤ –10V, VV+ = 0V,
VCM = VOUT = –2.5V
95
dB
CMRR
CIN
Common-Mode Rejection Ratio
Common Mode Input Capacitance
Output Voltage Swing
VCM = –0.2V to +5.2V
80
3
dB
pF
VOUT
output high, RL = 100k,
specified as VV+ – VOUT
0.3
1.5
1.5
mV
mV
output low, RL = 100k
0.3
15
15
1.5
1.5
mV
mV
output high, RL = 2k,
specified as VV+ – VOUT
50
75
mV
mV
output low, RL = 2k
50
75
mV
mV
ISC
AVOL
IS
Output Short Circuit Current
sourcing, VOUT = 0V
sinking, VOUT = 5V
sourcing
80
80
100
100
500
500
20
mA
mA
Note 6
Voltage Gain
V/mV
V/mV
µA
sinking
Supply Current
VV+ = 5V, VOUT = VV+/2
50
AC Electrical Characteristics (5V)
V+ = +5V, V– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
SR
Slew Rate
voltage follower, 1V step, RL = 100k@1.5V
VOUT = 1VP–P
0.02
V/µs
GBW
Gain Bandwidth Product
25
kHz
DC Electrical Characteristics (10V)
VV+ = +10V, VV– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
VOS
Input Offset Voltage
0.9
7
9
mV
mV
TCVOS
Input Offset Voltage
Temperature Drift
2.0
µV/°C
MIC7111
4
June 1998
MIC7111
Micrel
Symbol
Parameter
Condition
Min
Typ
Max
Units
IB
Input Bias Current
1
10
500
pA
pA
IOS
Input Offset Current
0.01
0.5
75
pA
pA
RIN
Input Resistance
>10
95
TΩ
+PSRR
Positive Power Supply
Rejection Ratio
5V ≤ VV+ ≤ 10V, VV– = 0V,
VCM = VOUT = 2.5V
65
65
60
dB
–PSRR
Negative Power Supply
Rejection Ratio
–5V ≤ VV– ≤ –10V, VV+ = 0V,
VCM = VOUT = –2.5V
95
dB
CMRR
CIN
Common-Mode Rejection Ratio
Common Mode Input Capacitance
Output Voltage Swing
VCM = –0.2V to +10.2V
85
3
dB
pF
VOUT
output high, RL = 100k,
specified as VV+ – VOUT
0.45
2.5
2.5
mV
mV
output low, RL = 100k
0.45
24
2.5
2.5
mV
mV
output high, RL = 2k,
specified as VV+ – VOUT
80
120
mV
mV
output low, RL = 2k
24
80
120
mV
mV
ISC
AVOL
IS
Output Short Circuit Current
sourcing, VOUT = 0V
sinking, VOUT = 10V
sourcing
100
100
200
200
500
500
25
mA
mA
Note 6
Voltage Gain
V/mV
V/mV
µA
sinking
Supply Current
VV+ = 10V, VOUT = VV+/2
65
AC Electrical Characteristics (10V)
V+ = +10V, V– = 0V, VCM = VOUT = VV+/2; RL = 1M; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
SR
Slew Rate
voltage follower, 1V step, RL = 100k@1.35V
VOUT = 1VP–P
0.02
V/µs
GBW
φM
Gain Bandwidth Product
Phase Margin
25
50
15
kHz
°
GM
Gain Margin
dB
eN
iN
Input Referred Voltage Noise
Input Referred Current Noise
f = 1kHz, VCM = 1.0V
f = 1kHz
110
nV/ Hz
pA/ Hz
0.03
General Notes: Devices are ESD protected; however, handling precautions are recommended. All limits guaranteed by testing on statistical analysis.
Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when
operating the device outside its recommended operating ratings.
Note 2: I/O Pin Voltage is any external voltage to which an input or output is referenced.
Note 3: 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 4: Thermal resistance, θ , applies to a part soldered on a printed-circuit board.
JA
Note 5: Human body model, 1.5k in series with 100pF.
Note 6: Short circuit may cause the device to exceed maxium allowable power dissipation. See Note 3.
June 1998
5
MIC7111
MIC7111
Micrel
Driving Capacitive Loads
Application Information
Drivingacapacitiveloadintroducesphase-lagintotheoutput
signal,andthisinturnreducesop-ampsystemphasemargin.
The application that is least forgiving of reduced phase
margin is a unity gain amplifier. The MIC7111 can typically
drivea500pFcapacitiveloadconnecteddirectlytotheoutput
when configured as a unity-gain amplifier.
Input Common-Mode Voltage
The MIC7111 tolerates input overdrive by at least 300mV
beyond either rail without producing phase inversion.
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.
Using Large-Value Feedback Resistors
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 fedback 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.
VOUT
RIN
VIN
Figure 2 illustrates a method of compensating phase lag
caused by using a large-value feedback resistor. Feedback
10kΩ
capacitor C introduces sufficient phase lead to overcome
FB
Figure 1. Input Current-Limit Protection
Output Voltage Swing
the phase lag caused by feedback resistor R and input
capacitance C . The value of C is determined by first
FB
IN
FB
estimating C and then applying the following formula:
IN
Sink and source output resistances of the MIC7111 are
equal. Maximum output voltage swing is determined by the
load and the approximate output resistance. The output
resistance is:
R
IN × CIN ≤ RFB × CFB
CFB
RFB
VDROP
ROUT
=
ILOAD
RIN
V
is the voltage dropped within the amplifier output
DROP
VIN
stage. V
and I
can be determined from the V
LOAD O
DROP
VOUT
(outputswing)portionoftheappropriateElectricalCharacter-
istics table. I is equal to the typical output high voltage
CIN
LOAD
minus V+/2 and divided by R
. For example, using the
LOAD
Electrical Characteristics DC (5V) table, the typical output
voltage drop using a 2kΩ load (connected to V+/2) is 0.015V,
Figure 2. Cancelling Feedback Phase Lag
which produces an I
of:
LOAD
SinceasignificantpercentageofC maybecausedbyboard
2.5V − 0.015V
IN
= 1.243mA
layout, it is important to note that the correct value of C may
FB
2kΩ
then:
15mV
R
=
= 12.1≈ 12Ω
OUT
1.243mA
MIC7111
6
June 1998
MIC7111
Micrel
VS
change when changing from a breadboard to the final circuit
layout.
0.5V to Q1 VCEO(sus)
Typical Circuits
VOUT
0V to V+
V+
1.8V to 10V
Some single-supply, rail-to-rail applications for which the
MIC7111 is well suited are shown in the circuit diagrams of
Figures 3 through 7.
3
4
2
MIC7111
VIN
0V to 2V
IOUT
1
V+
1.8V to 10V
Q1
VCEO = 40V
5
2N3904
{
IC(max) = 200mA
3
2
5
MIC7111
VIN
V +
RS
10Ω
⁄2W
1
VOUT
0V to V+
0V to
Change Q1 and RS
for higher current
and/or different gain.
4
1
A
V
V
IN
R2
IOUT
=
= 100mA/V as shown
RS
910k
R1
100k
Figure 5. Voltage-Controlled Current Sink
R4
Figure 3a. Noninverting Amplifier
100k
C1
V+
0.001µF
100
V+
4
3
2
MIC7111
1
VOUT
V+
0V
5
R2
AV = 1+
≈ 10
R1
R4
R2
V+
100k
100k
R3
100k
0
0
100
V
(V)
IN
Figure 3b. Noninverting Amplifier Behavior
Figure 6. Square Wave Oscillator
V+
1.8V to 10V
CIN
R1
R2
3
4
2
5
33k
MIC7111
330k
V+
VIN
0V to V+
1
VOUT
0V to V+
4
3
2
MIC7111
COUT
VOUT
1
VOUT = VIN
0V
RL
5
Figure 4. Voltage Follower/Buffer
R3
V+
R2 330k
= = −10
330k
A
= −
V
R4
330k
C1
1µF
R1 33k
Figure 7. AC-Coupled Inverting Amplifier
June 1998
7
MIC7111
MIC7111
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)
MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 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.
© 1998 Micrel Incorporated
MIC7111
8
June 1998
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