MCP6L71/1R/2/4
2 MHz, 150 µA Op Amps
Features
Description
•
•
•
•
•
•
The Microchip Technology Inc. MCP6L71/1R/2/4 family
of operational amplifiers (op amps) supports general
purpose applications. The combination of rail-to-rail
input and output, low quiescent current and bandwidth
fit into many applicaitons.
Gain Bandwidth Product: 2 MHz (typical)
Supply Current: IQ = 150 µA (typical)
Supply Voltage: 2.0V to 6.0V
Rail-to-Rail Input/Output
Extended Temperature Range: –40°C to +125°C
Available in Single, Dual and Quad Packages
Typical Applications
•
•
•
•
•
Portable Equipment
Photodiode Amplifier
Analog Filters
Notebooks and PDAs
Battery Powered Systems
This family has a 2 MHz Gain Bandwidth Product
(GBWP) and a low 150 µA per amplifier quiescent current. These op amps operate on supply voltages
between 2.0V and 6.0V, with rail-to-rail input and output
swing. They are available in the extended temperature
range.
Package Types
MCP6L71
SOT-23-5
Design Aids
•
•
•
•
FilterLab® Software
MAPS (Microchip Advanced Part Selector)
Analog Demonstration and Evaluation Boards
Application Notes
R2
VOUT
VIN
R3
VREF
VOUT 1
5 VDD VOUT 1
VSS 2
VDD 2
VIN+ 3
4 VIN– VIN+ 3
MCP6L71
SOIC, MSOP
Typical Application
R1
MCP6L71R
SOT-23-5
MCP6L71
Inverting Amplifier
4 VIN–
MCP6L72
SOIC, MSOP
NC 1
8 NC VOUTA 1
8 VDD
VIN– 2
7 VDD VINA– 2
7 VOUTB
VIN+ 3
6 VOUT VINA+ 3
6 VINB–
5 NC
5 VINB+
VSS 4
VSS 4
MCP6L74
SOIC, TSSOP
VOUTA 1
14 VOUTD
VINA– 2
13 VIND–
VINA+ 3
12 VIND+
VDD 4
VINB+ 5
© 2009 Microchip Technology Inc.
5 VSS
11 VSS
10 VINC+
VINB– 6
9 VINC–
VOUTB 7
8 VOUTC
DS22145A-page 1
MCP6L71/1R/2/4
NOTES:
DS22145A-page 2
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
1.0
ELECTRICAL CHARACTERISTICS
1.1
Absolute Maximum Ratings †
All other Inputs and Outputs .......... VSS – 0.3V to VDD + 0.3V
† Notice: Stresses above those listed under “Absolute
Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated in the operational listings of this specification is not
implied. Exposure to maximum rating conditions for extended
periods may affect device reliability.
Difference Input Voltage ...................................... |VDD – VSS|
†† See Section 4.1.2 “Input Voltage and Current Limits”.
VDD – VSS ........................................................................7.0V
Current at Input Pins ....................................................±2 mA
Analog Inputs (VIN+ and VIN–) †† .. VSS – 1.0V to VDD + 1.0V
Output Short Circuit Current ................................ Continuous
Current at Output and Supply Pins ............................±30 mA
Storage Temperature ................................... –65°C to +150°C
Junction Temperature (TJ) .........................................+150°C
ESD Protection On All Pins (HBM/MM) ................ ≥ 4 kV/400V
1.2
Specifications
TABLE 1-1:
DC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VDD = 5.0V, VSS = GND, VCM = VDD/2,
VOUT ≈ VDD/2, VL = VDD/2 and RL = 10 kΩ to VL. (Refer to Figure 1-1).
Parameters
Sym
Min
(Note 1)
Typ
Max
(Note 1)
Units
Conditions
Input Offset
VOS
–4
±1
+4
Input Offset Temperature Drift
Input Offset Voltage
ΔVOS/ΔTA
—
±1.3
—
Power Supply Rejection Ratio
PSRR
—
89
—
dB
IB
—
1
—
pA
IB
—
50
—
pA
TA= +85°C
IB
—
2000
—
pA
TA= +125°C
IOS
—
±1
—
pA
mV
µV/°C TA = –40°C to +125°C,
Input Bias Current and Impedance
Input Bias Current
Input Offset Current
Common Mode Input Impedance
ZCM
—
1013||6
—
Ω||pF
Differential Input Impedance
ZDIFF
—
1013||3
—
Ω||pF
Common Mode Input Voltage
Range
VCMR
-0.3
—
+5.3
V
Common Mode Rejection Ratio
CMRR
—
91
—
dB
VCM = –0.3V to 5.3V
AOL
—
105
—
dB
VOUT = 0.2V to 4.8V,
VCM = VSS
VOL
—
—
0.020
V
G = +2 V/V,
0.5V input overdrive
VOH
4.980
—
—
V
G = +2 V/V,
0.5V input overdrive
ISC
—
±25
—
mA
Common Mode
Open-Loop Gain
DC Open-Loop Gain
(Large Signal)
Output
Maximum Output Voltage Swing
Output Short Circuit Current
Note 1:
For design guidance only; not tested.
© 2009 Microchip Technology Inc.
DS22145A-page 3
MCP6L71/1R/2/4
TABLE 1-1:
DC ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VDD = 5.0V, VSS = GND, VCM = VDD/2,
VOUT ≈ VDD/2, VL = VDD/2 and RL = 10 kΩ to VL. (Refer to Figure 1-1).
Parameters
Sym
Min
(Note 1)
Max
(Note 1)
VDD
2.0
—
6.0
V
IQ
50
150
240
µA
Typ
Units
Conditions
Power Supply
Supply Voltage
Quiescent Current per Amplifier
Note 1:
IO = 0
For design guidance only; not tested.
TABLE 1-2:
AC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VDD = +2.0V to +5.5V, VSS = GND,
VCM = VDD2, VOUT ≈ VDD/2, VL = VDD/2, RL = 10 kΩ to VL and CL = 60 pF. (Refer to Figure 1-1).
Parameters
Sym
Min
Typ
Max
Units
Conditions
AC Response
Gain Bandwidth Product
GBWP
—
2.0
—
MHz
Phase Margin
PM
—
65
—
°
Slew Rate
SR
—
0.9
—
V/µs
G = +1 V/V
Noise
Input Noise Voltage
Eni
—
4.6
—
µVP-P
Input Noise Voltage Density
eni
—
19
—
nV/√Hz
f = 10 kHz
Input Noise Current Density
ini
—
3
—
fA/√Hz
f = 1 kHz
TABLE 1-3:
f = 0.1 Hz to 10 Hz
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, VDD = +2.0V to +5.5V and VSS = GND.
Parameters
Sym
Min
Typ
Max
Units
Specified Temperature Range
TA
–40
—
+125
°C
Operating Temperature Range
TA
–40
—
+125
°C
Storage Temperature Range
TA
–65
—
+150
°C
Thermal Resistance, 5L-SOT-23
θJA
—
256
—
°C/W
Thermal Resistance, 8L-SOIC
θJA
—
163
—
°C/W
Thermal Resistance, 8L-MSOP
θJA
—
206
—
°C/W
Thermal Resistance, 14L-SOIC
θJA
—
120
—
°C/W
Thermal Resistance, 14L-TSSOP
θJA
—
100
—
°C/W
Conditions
Temperature Ranges
Note 1
Thermal Package Resistances
Note 1: The Junction Temperature (TJ) must not exceed the Absolute Maximum specification of +150°C.
DS22145A-page 4
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
1.3
Test Circuits
The circuit used for most DC and AC tests is shown in
Figure 1-1. This circuit can independently set VCM and
VOUT; see Equation 1-1. Note that VCM is not the
circuit’s common mode voltage ((VP + VM)/2), and that
VOST includes VOS plus the effects (on the input offset
error, VOST) of temperature, CMRR, PSRR and AOL.
CF
6.8 pF
RG
100 kΩ
VP
G DM = R F ⁄ R G
CB1
100 nF
MCP6L7X
V CM = ( V P + V DD ⁄ 2 ) ⁄ 2
VDD/2
CB2
1 µF
VIN–
V OST = V IN– – V IN+
V OUT = ( V DD ⁄ 2 ) + ( V P – V M ) + V OST ( 1 + G DM )
Where:
GDM = Differential Mode Gain
(V/V)
VCM = Op Amp’s Common Mode
Input Voltage
(V)
© 2009 Microchip Technology Inc.
VDD
VIN+
EQUATION 1-1:
VOST = Op Amp’s Total Input Offset
Voltage
RF
100 kΩ
(mV)
VM
RG
100 kΩ
RL
10 kΩ
RF
100 kΩ
CF
6.8 pF
VOUT
CL
60 pF
VL
FIGURE 1-1:
AC and DC Test Circuit for
Most Specifications.
DS22145A-page 5
MCP6L71/1R/2/4
NOTES:
DS22145A-page 6
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
2.0
TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless otherwise indicated, TA = +25°C, VDD = 5.0V, VSS = GND, VCM = VDD/2, VOUT ≈ VDD/2, VL = VDD/2,
RL = 10 kΩ to VL and CL = 60 pF.
250
VDD = 2.0V
Representitive Part
Common Mode Range (V)
Input Offset Voltage (µV)
300
200
150
100
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
50
0
-50
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-100
0.5
0.4
0.3
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
VCMRH – VDD
One Wafer Lot
VCMRL – VSS
-50
-25
Common Mode Input Voltage (V)
FIGURE 2-1:
Input Offset Voltage vs.
Common Mode Input Voltage at VDD = 2.0V.
PSRR, CMRR (dB)
Input Offset Voltage (µV)
150
TA = +125°C
100
50
TA = +85°C
TA = +25°C
TA = -40°C
0
-50
110
100
CMRR (V CM = -0.3V to +5.3V)
90
PSRR
(V CM = VSS)
80
70
60
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
-100
-50
-25
FIGURE 2-2:
Input Offset Voltage vs.
Common Mode Input Voltage at VDD = 5.5V.
FIGURE 2-5:
Temperature.
300
200
150
100
50
VDD = 2.0V
VDD = 5.5V
-50
25
50
75
100
125
CMRR, PSRR vs.
110
100
CMRR, PSRR (dB)
VCM = VSS
Representative Part
250
0
Ambient Temperature (°C)
Common Mode Input Voltage (V)
Input Offset Voltage (µV)
125
120
VDD = 5.5V
Representitive Part
200
0
100
FIGURE 2-4:
Input Common Mode Range
Voltage vs. Ambient Temperature.
300
250
0
25
50
75
Ambient Temperature (°C)
CMRR
90
80
70
60
50
PSRR–
PSRR+
40
30
-100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Output Voltage (V)
FIGURE 2-3:
Output Voltage.
Input Offset Voltage vs.
© 2009 Microchip Technology Inc.
20
1
10 1.E+02
100 1.E+03
1k
10k 1.E+05
100k 1.E+06
1M
1.E+00
1.E+01
1.E+04
Frequency (Hz)
FIGURE 2-6:
Frequency.
CMRR, PSRR vs.
DS22145A-page 7
MCP6L71/1R/2/4
Note: Unless otherwise indicated, TA = +25°C, VDD = 5.0V, VSS = GND, VCM = VDD/2, VOUT ≈ VDD/2, VL = VDD/2,
RL = 10 kΩ to VL and CL = 60 pF.
1.E-02
10m
1.E-03
1m
1.E-04
100µ
1.E-05
10µ
1.E-06
1µ
100n
1.E-07
10n
1.E-08
1n
1.E-09
100p
1.E-10
10p
1.E-11
1p
1.E-12
Input, Output Voltage (V)
Input Current Magnitude (A)
6
+125°C
+85°C
+25°C
-40°C
-1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0
VDD = 5.0V
G = +2 V/V
5
4
3
2
VIN
1
VOUT
0
-1
Input Voltage (V)
Input Current vs. Input
0
100
-30
80
-60
Phase
60
40
-90
-120
Gain
20
-150
0
-180
FIGURE 2-8:
Frequency.
Frequency (Hz)
Open-Loop Gain, Phase vs.
50
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Power Supply Voltage (V)
FIGURE 2-11:
Supply Voltage.
10
0.1
1
10
100
1k
10k 100k 1M
1.E- 1.E+0 1.E+0 1.E+0 1.E+0 1.E+0 1.E+0 1.E+0
01
0
1 Frequency
2
3(Hz) 4
5
6
Input Noise Voltage Density
Ouptut Short-Circuit Current
(mA)
Input Noise Voltage Density
(nV/√Hz)
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
100
Quiescent Current vs.
35
100
DS22145A-page 8
150
1k 10k 100k 1M 10M
1,000
FIGURE 2-9:
vs. Frequency.
200
0
1.E+07
1.E+06
1.E+05
1.E+04
100
1.E+03
10
1.E+02
1
1.E+01
0.1
1.E+00
-210
1.E-01
-20
250
Quiescent Current
(µA/amplifier)
120
FIGURE 2-10:
The MCP6L71/1R/2/4 Show
No Phase Reversal.
Open-Loop Phase (°)
Open-Loop Gain (dB)
FIGURE 2-7:
Voltage.
Time (1 ms/div)
30
25
20
15
10
5
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Power Supply Voltage (V)
FIGURE 2-12:
Output Short Circuit Current
vs. Supply Voltage.
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
50
45
40
35
30
25
20
15
10
5
0
1.8
1.6
VOL – VSS
-IOUT
Slew Rate (V/µs)
VDD – VOH
IOUT
Falling Edge
1.2
1.0
0.8
V DD = 2.0V
0.6
Rising Edge
0.4
0.2
0.0
1
Output Current Magnitude (mA)
10
FIGURE 2-13:
Ratio of Output Voltage
Headroom vs. Output Current Magnitude.
-50
0
25
50
75
Ambient Temperature (°C)
FIGURE 2-16:
Temperature.
100
125
Slew Rate vs. Ambient
10
G = +1 V/V
VDD = 5.0V
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
Maximum Output Voltage
Swing (V P-P)
5.0
VDD = 5.5V
VDD = 2.0V
1
Time (5 µs/div)
Large Signal Non-inverting
10k
100k
Frequency (Hz)
1M
1.E+07
1.E+03
1k
0.0
1.E+06
0.1
0.5
FIGURE 2-14:
Pulse Response.
-25
1.E+05
0.1
Output Voltage (V)
V DD = 5.5V
1.4
1.E+04
Ratio of Output Headroom to
Output Current (mV/mA)
Note: Unless otherwise indicated, TA = +25°C, VDD = 5.0V, VSS = GND, VCM = VDD/2, VOUT ≈ VDD/2, VL = VDD/2,
RL = 10 kΩ to VL and CL = 60 pF.
10M
FIGURE 2-17:
Maximum Output Voltage
Swing vs. Frequency.
Output Voltage (10 mV/div)
G = +1 V/V
Time (2 µs/div)
FIGURE 2-15:
Pulse Response.
Small Signal Non-inverting
© 2009 Microchip Technology Inc.
DS22145A-page 9
MCP6L71/1R/2/4
NOTES:
DS22145A-page 10
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
3.0
PIN DESCRIPTIONS
Descriptions of the pins are listed in Table 3-1 (single op amps) and Table 3-2 (dual and quad op amps).
TABLE 3-1:
PIN FUNCTION TABLE FOR SINGLE OP AMPS
MCP6L71
MCP6L71R
Symbol
Description
MSOP, SOIC
SOT-23-5
SOT-23-5
2
4
4
VIN–
Inverting Input
3
3
3
VIN+
Non-inverting Input
4
2
5
VSS
Negative Power Supply
6
1
1
VOUT
Analog Output
7
5
2
VDD
Positive Power Supply
1,5,8
—
—
NC
No Internal Connection
TABLE 3-2:
PIN FUNCTION TABLE FOR DUAL AND QUAD OP AMPS
MCP6L72
MCP6L74
MSOP, SOIC
SOIC, TSSOP
Symbol
3.1
Description
1
1
VOUTA
Analog Output (op amp A)
2
2
VINA–
Inverting Input (op amp A)
3
3
VINA+
Non-inverting Input (op amp A)
8
4
VDD
5
5
VINB+
Non-inverting Input (op amp B)
6
6
VINB–
Inverting Input (op amp B)
7
7
VOUTB
Analog Output (op amp B)
—
8
VOUTC
Analog Output (op amp C)
Positive Power Supply
—
9
VINC–
Inverting Input (op amp C)
—
10
VINC+
Non-inverting Input (op amp C)
Negative Power Supply
4
11
VSS
—
12
VIND+
Non-inverting Input (op amp D)
—
13
VIND–
Inverting Input (op amp D)
—
14
VOUTD
Analog Output (op amp D)
Analog Outputs
The output pins are low impedance voltage sources.
3.2
Analog Inputs
The non-inverting and inverting inputs are high
impedance CMOS inputs with low bias currents.
© 2009 Microchip Technology Inc.
3.3
Power Supply Pins
The positive power supply (VDD) is 2.0V to 6.0V higher
than the negative power supply (VSS). For normal
operation, the other pins are at voltages between VSS
and VDD.
Typically, these parts are used in a single (positive)
supply configuration. In this case, VSS is connected to
ground and VDD is connected to the supply. VDD will
need bypass capacitors.
DS22145A-page 11
MCP6L71/1R/2/4
NOTES:
DS22145A-page 12
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
4.0
APPLICATION INFORMATION
4.1.3
NORMAL OPERATIONS
The MCP6L71/1R/2/4 family of op amps is
manufactured using Microchip’s state of the art CMOS
process, specifically designed for low cost, low power
and general purpose applications. The low supply
voltage, low quiescent current and wide bandwidth
make the MCP6L71/1R/2/4 ideal for battery powered
applications.
The input stage of the MCP6L71/1R/2/4 op amps uses
two differential CMOS input stages in parallel. One
operates at low common mode input voltage (VCM),
while the other at high VCM. With this topology, and at
room temperature, the device operates with VCM up to
0.3V above VDD and 0.3V below VSS (typically at
+25°C).
4.1
The transition between the two input stage occurs
when VCM = VDD – 1.1V. For the best distortion and
gain linearity, with non-inverting gains, avoid this region
of operation.
4.1.1
Rail-to-Rail Inputs
PHASE REVERSAL
The MCP6L71/1R/2/4 op amps are designed to prevent phase inversion when the input pins exceed the
supply voltages. Figure 2-10 shows an input voltage
exceeding both supplies without any phase reversal.
4.1.2
INPUT VOLTAGE AND CURRENT
LIMITS
In order to prevent damage and/or improper operation
of these amplifiers, the circuit they are in must limit the
currents (and voltages) at the input pins (see
Section 1.1 “Absolute Maximum Ratings †”).
Figure 4-1 shows the recommended approach to protecting these inputs. The internal ESD diodes prevent
the input pins (VIN+ and VIN–) from going too far below
ground, and the resistors R1 and R2 limit the possible
current drawn out of the input pins. Diodes D1 and D2
prevent the input pins (VIN+ and VIN–) from going too
far above VDD, and dump any currents onto VDD.
VDD
D1
V1
R1
D2
MCP6L7X
VOUT
V2
4.2
Rail-to-Rail Output
The output voltage range of the MCP6L71/1R/2/4 op
amps is VDD – 20 mV (minimum) and VSS + 20 mV
(maximum) when RL = 10 kΩ is connected to VDD/2
and VDD = 5.0V. Refer to Figure 2-13 for more information.
4.3
Capacitive Loads
Driving large capacitive loads can cause stability
problems for voltage feedback op amps. As the load
capacitance increases, the feedback loop’s phase
margin decreases and the closed-loop bandwidth is
reduced. This produces gain peaking in the frequency
response, with overshoot and ringing in the step
response.
When driving large capacitive loads with these op
amps (e.g., > 100 pF when G = +1), a small series
resistor at the output (RISO in Figure 4-2) improves the
feedback loop’s phase margin (stability) by making the
output load resistive at higher frequencies. The
bandwidth will be generally lower than the bandwidth
with no capacitive load.
RG
RF
RISO
VOUT
R2
CL
RN
MCP6L7X
R3
VSS – (minimum expected V1)
2 mA
VSS – (minimum expected V2)
R2 >
2 mA
R1 >
FIGURE 4-1:
Inputs.
Protecting the Analog
FIGURE 4-2:
Output Resistor, RISO
Stabilizes Large Capacitive Loads.
Bench measurements are helpful in choosing RISO.
Adjust RISO so that a small signal step response (see
Figure 2-15) has reasonable overshoot (e.g., 4%).
A significant amount of current can flow out of the
inputs (through the ESD diodes) when the common
mode voltage (VCM) is below ground (VSS); see
Figure 2-7. Applications that are high impedance may
need to limit the usable voltage range.
© 2009 Microchip Technology Inc.
DS22145A-page 13
MCP6L71/1R/2/4
4.4
Supply Bypass
Guard Ring
With this family of operational amplifiers, the power
supply pin (VDD for single supply) should have a local
bypass capacitor (i.e., 0.01 µF to 0.1 µF) within 2 mm
for good, high frequency performance. It also needs a
bulk capacitor (i.e., 1 µF or larger) within 100 mm to
provide large, slow currents. This bulk capacitor can be
shared with nearby analog parts.
4.5
Unused Amplifiers
An unused op amp in a quad package (MCP6L74)
should be configured as shown in Figure 4-3. These
circuits prevent the output from toggling and causing
crosstalk. In Circuit A, R1 and R2 produce a voltage
within its output voltage range (VOH, VOL). The op amp
buffers this voltage, which can be used elsewhere in
the circuit. Circuit B uses the minimum number of
components and operates as a comparator.
¼ MCP6L74 (A)
1.
¼ MCP6L74 (B)
VDD
VDD
R1
FIGURE 4-4:
Layout.
2.
VDD
VREF
R2
V REF
FIGURE 4-3:
4.6
Unused Op Amps.
PCB Surface Leakage
In applications where low input bias current is critical,
Printed Circuit Board (PCB) surface leakage effects
need to be considered. Surface leakage is caused by
humidity, dust or other contamination on the board.
Under low humidity conditions, a typical resistance
between nearby traces is 1012Ω. A 5V difference would
cause 5 pA of current to flow. This is greater than the
MCP6L71/1R/2/4 family’s bias current at +25°C (1 pA,
typical).
VIN+
Example Guard Ring
For Inverting Gain and Transimpedance
Amplifiers (convert current to voltage, such as
photo detectors):
a) Connect the guard ring to the non-inverting
input pin (VIN+). This biases the guard ring
to the same reference voltage as the op
amp (e.g., VDD/2 or ground).
b) Connect the inverting pin (VIN–) to the input
with a wire that does not touch the PCB
surface.
Non-inverting Gain and Unity Gain Buffer:
a) Connect the guard ring to the inverting input
pin (VIN–). This biases the guard ring to the
common mode input voltage.
b) Connect the non-inverting pin (VIN+) to the
input with a wire that does not touch the
PCB surface.
4.7
R2
= V DD ⋅ -----------------R1 + R2
VIN–
Application Circuits
4.7.1
INVERTING INTEGRATOR
An inverting integrator is shown in Figure 4-5. The
circuit provides an output voltage that is proportional to
the negative time-integral of the input. The additional
resistor R2 limits DC gain and controls output clipping.
To minimize the integrator’s error for slow signals, the
value of R2 should be much larger than the value of R1.
+
VOUT
MCP6L71
_
C1
VIN
R1
The easiest way to reduce surface leakage is to use a
guard ring around sensitive pins (or traces). The guard
ring is biased at the same voltage as the sensitive pin.
Figure 4-4 shows an example of this type of layout.
R2
1
V OUT = – ------------R1 C1
∫ 0VIN dt
t
R2 » R1
FIGURE 4-5:
DS22145A-page 14
Inverting Integrator.
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
5.0
DESIGN TOOLS
Microchip provides the basic design tools needed for
the MCP6L71/1R/2/4 family of op amps.
5.1
FilterLab® Software
Microchip’s FilterLab® software is an innovative
software tool that simplifies analog active filter (using
op amps) design. Available at no cost from the Microchip web site at www.microchip.com/filterlab, the FilterLab design tool provides full schematic diagrams of the
filter circuit with component values. It also outputs the
filter circuit in SPICE format, which can be used with
the macro model to simulate actual filter performance.
5.2
MAPS (Microchip Advanced Part
Selector)
5.4
Application Notes
The following Microchip Application Notes are available on the Microchip web site at www.microchip. com/
appnotes and are recommended as supplemental reference resources.
• ADN003: “Select the Right Operational Amplifier
for your Filtering Circuits”, DS21821
• AN722: “Operational Amplifier Topologies and DC
Specifications”, DS00722
• AN723: “Operational Amplifier AC Specifications
and Applications”, DS00723
• AN884: “Driving Capacitive Loads With Op
Amps”, DS00884
• AN990: “Analog Sensor Conditioning Circuits –
An Overview”, DS00990
MAPS is a software tool that helps efficiently identify
Microchip devices that fit a particular design requirement. Available at no cost from the Microchip web site
at www.microchip.com/ maps, the MAPS is an overall
selection tool for Microchip’s product portfolio that
includes Analog, Memory, MCUs and DSCs. Using this
tool you can define a filter to sort features for a parametric search of devices and export side-by-side technical comparison reports. Helpful links are also
provided for Data sheets, Purchase, and Sampling of
Microchip parts.
5.3
Analog Demonstration and
Evaluation Boards
Microchip offers a broad spectrum of Analog
Demonstration and Evaluation Boards that are
designed to help you achieve faster time to market. For
a complete listing of these boards and their
corresponding user’s guides and technical information,
visit the Microchip web site at www.microchip.com/
analogtools.
Some boards that are especially useful are:
•
•
•
•
•
•
•
MCP6XXX Amplifier Evaluation Board 1
MCP6XXX Amplifier Evaluation Board 2
MCP6XXX Amplifier Evaluation Board 3
MCP6XXX Amplifier Evaluation Board 4
Active Filter Demo Board Kit
5/6-Pin SOT-23 Evaluation Board, P/N VSUPEV2
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board,
P/N SOIC8EV
• 14-Pin SOIC/TSSOP/DIP Evaluation Board, P/N
SOIC14EV
© 2009 Microchip Technology Inc.
DS22145A-page 15
MCP6L71/1R/2/4
NOTES:
DS22145A-page 16
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
6.0
PACKAGING INFORMATION
6.1
Package Marking Information
Example:
5-Lead SOT-23 (MCP6L71, MCP6L71R)
Device
XXNN
Code
MCP6L71
WGNN
MCP6L71R
WFNN
WG25
Note: Applies to 5-Lead SOT-23
8-Lead MSOP (MCP6L71, MCP6L72)
Example:
XXXXXX
6L72E
YWWNNN
911256
8-Lead SOIC (150 mil) (MCP6L71, MCP6L72)
XXXXXXXX
XXXXYYWW
NNN
MCP6L72E
e3
SN^^0911
256
Legend: XX...X
Y
YY
WW
NNN
e3
*
Note:
Example:
Customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
© 2009 Microchip Technology Inc.
DS22145A-page 17
MCP6L71/1R/2/4
Package Marking Information (Continued)
14-Lead SOIC (150 mil) (MCP6L74)
Example:
XXXXXXXXXX
XXXXXXXXXX
YYWWNNN
14-Lead TSSOP (MCP6L74)
XXXXXXXX
YYWW
NNN
DS22145A-page 18
MCP6L74
e3
E/SL^^
0911256
Example:
6L74EST
0911
256
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
.# #$ # /
## +22--- 2
! -
/ 0 # 1 /
% # # ! #
b
N
E
E1
3
2
1
e
e1
D
A2
A
c
φ
A1
L
L1
3#
4#
5$8 %1
4
44""
5
5
7
(
!1#
6$# ! 4
56
()*
!1#
6, 9 #
! !1 /
/
# !%%
6, <!#
! !1 /
6, 4 #
<!#
)*
:
;
:
(
:
(
"
:
"
:
;
:
.#4 #
4
:
=
.# #
4
(
:
;
.# >
:
>
4
;
:
=
!/
4 !<!#
8
:
(
!"!#$! !% #$ !% #$ # & !
!# "'(
)*+ ) # & #, $ --#$## ! - * )
© 2009 Microchip Technology Inc.
DS22145A-page 19
MCP6L71/1R/2/4
!" .# #$ # /
## +22--- 2
! -
/ 0 # 1 /
% # # ! #
D
N
E
E1
NOTE 1
1
2
e
b
A2
A
c
φ
L
L1
A1
3#
4#
5$8 %1
44""
5
5
=()*
6, 9 #
/
# !%%
6, <!#
! !1 /
6, 4 #
7
;
1#
! !1 /
56
:
:
(
;(
(
:
(
"
<!#
)*
"
)*
)*
.#4 #
4
.# #
4
.# >
:
;>
4
;
:
!/
=
;
(".
4 !<!#
8
:
1, $ ! &% #$ , 08$#$ #8 # !-## # ! !"!#$! !% #$ !% #$ # & !(
!# "'(
)*+ ) # & #, $ --#$## ".+ % 0$ $ -#$## 0%% # $ ! - * )
DS22145A-page 20
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
#$%&'()*+,
.# #$ # /
## +22--- 2
! -
/ 0 # 1 /
% # # ! #
D
e
N
E
E1
NOTE 1
1
2
3
α
h
b
h
A2
A
c
φ
L
A1
L1
3#
4#
5$8 %1
44""
5
5
7
)*
6, 9 #
/
# !%%?
6, <!#
! !1 /
56
;
1#
! !1 /
β
:
:
(
:
:
:
(
"
<!#
6, 4 #
(
=)*
"
)*
)*
* % @ # A
(
:
(
.#4 #
4
:
.# #
4
.# >
:
;>
4
!/
:
(
4
!<!#
".
8
:
(
! %# (>
:
(>
! %# )##
(>
:
(>
1, $ ! &% #$ , 08$#$ #8 # !-## # ! ? % #* # #
!"!#$! !% #$ !% #$ # & !(
!# "'(
)*+ ) # & #, $ --#$## ".+ % 0$ $ -#$## 0%% # $ ! - * ()
© 2009 Microchip Technology Inc.
DS22145A-page 21
MCP6L71/1R/2/4
#$%&'()*+,
.# #$ # /
## +22--- 2
DS22145A-page 22
! -
/ 0 # 1 /
% # # ! #
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
-. #$%&'()*+,
.# #$ # /
## +22--- 2
! -
/ 0 # 1 /
% # # ! #
D
N
E
E1
NOTE 1
1
2
3
e
h
b
A2
A
c
φ
L
A1
β
L1
3#
4#
5$8 %1
44""
5
5
7
)*
6, 9 #
/
# !%%?
6, <!#
! !1 /
56
1#
! !1 /
α
h
:
:
(
:
:
:
(
"
<!#
6, 4 #
(
=)*
"
)*
;=()*
* % @ # A
(
:
(
.#4 #
4
:
.# #
4
.# >
:
;>
4
!/
:
(
4
!<!#
".
8
:
(
! %# (>
:
(>
! %# )##
(>
:
(>
1, $ ! &% #$ , 08$#$ #8 # !-## # ! ? % #* # #
!"!#$! !% #$ !% #$ # & !(
!# "'(
)*+ ) # & #, $ --#$## ".+ % 0$ $ -#$## 0%% # $ ! - * =()
© 2009 Microchip Technology Inc.
DS22145A-page 23
MCP6L71/1R/2/4
.# #$ # /
## +22--- 2
DS22145A-page 24
! -
/ 0 # 1 /
% # # ! #
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
-. / / ! #.&.)* .# #$ # /
## +22--- 2
! -
/ 0 # 1 /
% # # ! #
D
N
E
E1
NOTE 1
1 2
e
b
A2
A
c
A1
φ
L
L1
3#
4#
5$8 %1
44""
5
5
7
1#
=()*
6, 9 #
! !1 /
56
/
# !%%
6, <!#
:
:
;
(
(
:
(
"
=)*
! !1 /
<!#
"
! !1 /
4 #
(
(
.#4 #
4
(
=
(
.# #
4
.# I
>
:
;>
4
:
!/
(
".
4 !<!#
8
:
1, $ ! &% #$ , 08$#$ #8 # !-## # ! !"!#$! !% #$ !% #$ # & !(
!# "'(
)*+ ) # & #, $ --#$## ".+ % 0$ $ -#$## 0%% # $ ! - * ;)
© 2009 Microchip Technology Inc.
DS22145A-page 25
MCP6L71/1R/2/4
NOTES:
DS22145A-page 26
© 2009 Microchip Technology Inc.
MCP6L71/1R/2/4
APPENDIX A:
REVISION HISTORY
Revision A (March 2009)
• Original data sheet release.
© 2008 Microchip Technology Inc.
DS22145A-page 27
MCP6L71/1R/2/4
NOTES:
DS22145A-page 28
© 2008 Microchip Technology Inc.
MCP6L71/1R/2/4
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO.
–
X
/XX
Temperature
Range
Package
Examples:
a)
Device
b)
c)
Device:
MCP6L71T:
MCP6L71RT:
MCP6L72T:
MCP6L74T:
Single Op Amp (Tape and Reel)
(MSOP, SOIC, SOT-23-5)
Single Op Amp (Tape and Reel)
(SOT-23-5)
Dual Op Amp (Tape and Reel)
(MSOP, SOIC)
Quad Op Amp (Tape and Reel)
(SOIC, TSSOP)
Temperature Range:
E
= -40°C to +125°C
Package:
OT = Plastic Small Outline Transistor (SOT-23), 5-lead
(MCP6L71, MCP6L71R)
MS = Plastic MSOP, 8-lead
SN = Plastic SOIC, (150 mil Body), 8-lead
SL = Plastic SOIC (150 mil Body), 14-lead
ST = Plastic TSSOP (4.4 mm Body), 14-lead
© 2009 Microchip Technology Inc.
MCP6L71T-E/OT:
Tape and Reel,
5LD SOT-23 package.
MCP6L71T-E/MS: Tape and Reel,
8LD MSOP package.
MCP6L71T-E/SN: Tape and Reel,
8LD SOIC package.
a)
MCP6L71RT-E/OT: Tape and Reel,
5LD SOT-23 package.
a)
MCP6L72T-E/MS: Tape and Reel,
8LD MSOP package.
MCP6L72T-E/SN: Tape and Reel,
8LD SOIC package.
b)
a)
MCP6L74T-E/SL:
b)
MCP6L74-E/ST:
Tape and Reel,
14LD SOIC package.
Tape and Reel,
14LD TSSOP package.
DS22145A-page 29
MCP6L71/1R/2/4
NOTES:
DS22145A-page 30
© 2009 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, rfPIC, SmartShunt and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
FilterLab, Linear Active Thermistor, MXDEV, MXLAB,
SEEVAL, SmartSensor and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, nanoWatt XLP,
PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal,
PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select
Mode, Total Endurance, TSHARC, WiperLock and ZENA are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2009, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
© 2009 Microchip Technology Inc.
DS22145A-page 31
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
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Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://support.microchip.com
Web Address:
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Tel: 852-2401-1200
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Tel: 91-80-3090-4444
Fax: 91-80-3090-4080
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Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
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Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
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Tel: 45-4450-2828
Fax: 45-4485-2829
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Tel: 91-20-2566-1512
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Tel: 86-10-8528-2100
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Tel: 852-2401-1200
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Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
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Tel: 86-25-8473-2460
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Tel: 60-3-6201-9857
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Tel: 86-532-8502-7355
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Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
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Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Hsin Chu
Tel: 886-3-572-9526
Fax: 886-3-572-6459
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
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Tel: 86-29-8833-7252
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Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
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Tel: 44-118-921-5869
Fax: 44-118-921-5820
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Tel: 86-756-3210040
Fax: 86-756-3210049
02/04/09
DS22145A-page 32
© 2009 Microchip Technology Inc.