MICROCHIP MCP6231-E/P

MCP6231/2
20 µA, 300 kHz Rail-to-Rail Op Amp
Features
Description
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The Microchip Technology Inc. MCP6231/2 operational amplifiers (op amps) provide wide bandwidth for
the quiescent current. The MCP6231/2 family has a
300 kHz Gain Bandwidth Product (GBWP) and 65°
(typ.) phase margin. This family operates from a single
supply voltage as low as 1.8V, while drawing 20 µA
(typ.) quiescent current. In addition, the MCP6231/2
family supports rail-to-rail input and output swing, with
a common mode input voltage range of VDD + 300 mV
to VSS – 300 mV. These op amps are designed in one
of Microchip’s advanced CMOS processes.
Gain Bandwidth Product: 300 kHz (typ.)
Supply Current: IQ = 20 µA (typ.)
Supply Voltage: 1.8V to 5.5V
Rail-to-Rail Input/Output
Extended Temperature Range: -40°C to +125°C
Available in 5-Pin SC-70 and SOT-23 packages
Applications
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Automotive
Portable Equipment
Transimpedance amplifiers
Analog Filters
Notebooks and PDAs
Battery-Powered Systems
Package Types
MCP6231R
MCP6231
SOT-23-5
VOUT 1
Available Tools
VIN+ 3
VOUT 1
4 VIN–
VIN+ 3
5 VSS
VDD 2
–
+
+
VSS 2
SPICE Macro Models (at www.microchip.com)
SOT-23-5
5 VDD
–
4 VIN–
®
FilterLab Software (at www.microchip.com)
VIN1
7 VDD
VSS 2
VIN+ 3
+
6 VOUT
VIN– 3
MCP6231
RZ
5 VDD
–
4 VOUT
5 NC
MCP6232
–
+
RY
VIN+ 1
–
VSS 4
RF
RX
8 NC
VIN– 2
NC 1
RG1
SC-70-5, SOT-23-5
+
RG2
VIN2
VDD
MCP6231U
MCP6231
PDIP, SOIC, MSOP
Typical Application
VOUT
PDIP, SOIC, MSOP
VOUTA 1
VINA_ 2
VINA+ 3
VSS 4
8 VDD
A
7 VOUTB
- +
+B
-
6 VINB_
5 VINB+
Summing Amplifier Circuit
 2004 Microchip Technology Inc.
DS21881B-page 1
MCP6231/2
1.0
ELECTRICAL
CHARACTERISTICS
VDD - VSS .........................................................................7.0V
† Notice: Stresses above those listed under “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.
All Inputs and Outputs ................... VSS – 0.3V to VDD + 0.3V
Difference Input Voltage ...................................... |VDD – VSS|
PIN FUNCTION TABLE
Absolute Maximum Ratings †
Output Short Circuit Current ..................................continuous
Name
Current at Input Pins ....................................................±2 mA
Function
Current at Output and Supply Pins ............................±30 mA
VIN+, VINA+, VINB+
Non-inverting Input
Storage Temperature.................................... –65°C to +150°C
VIN–, VINA–, VINB–
Inverting Input
Maximum Junction Temperature (TJ) .......................... +150°C
VDD
Positive Power Supply
ESD Protection On All Pins (HBM;MM) ............... ≥ 4 kV; 400V
VSS
Negative Power Supply
VOUT, VOUTA, VOUTB
Output
DC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VDD = +1.8V to +5.5V, VSS = GND, VCM = VDD/2, RL = 100 kΩ
to VDD/2 and VOUT ≈ VDD/2.
Parameters
Sym
Min
Typ
Max
Units
VOS
–5.0
—
+5.0
mV
Extended Temperature
VOS
–7.0
—
+7.0
mV
Input Offset Drift with Temperature
∆VOS/∆TA
—
±3.0
—
µV/°C
PSRR
—
83
—
dB
Conditions
Input Offset
Input Offset Voltage
Power Supply Rejection
VCM = VSS
TA = –40°C to +125°C (Note)
TA= –40°C to +125°C,
VCM = VSS
VCM = VSS
Input Bias Current and Impedance
Input Bias Current:
At Temperature
At Temperature
IB
—
±1.0
—
pA
IB
—
20
—
pA
TA = +85°C
TA = +125°C
IB
—
1100
—
pA
Input Offset Current
IOS
—
±1.0
—
pA
Common Mode Input Impedance
ZCM
—
1013||6
—
Ω||pF
Differential Input Impedance
ZDIFF
—
1013||3
—
Ω||pF
Common Mode Input Range
VCMR
VSS – 0.3
—
VDD + 0.3
V
Common Mode Rejection Ratio
CMRR
61
75
—
dB
VCM = –0.3V to 5.3V, VDD = 5V
AOL
90
110
—
dB
VOUT = 0.3V to VDD – 0.3V,
VCM = VSS
VOL, VOH
VSS + 35
—
VDD – 35
mV
RL =10 kΩ, 0.5V Output Overdrive
ISC
—
±6
—
mA
VDD = 1.8V
ISC
—
±23
—
mA
VDD = 5.5V
VDD
1.8
—
5.5
V
IQ
10
20
30
µA
Common Mode
Open-Loop Gain
DC Open-Loop Gain (large signal)
Output
Maximum Output Voltage Swing
Output Short-Circuit Current
Power Supply
Supply Voltage
Quiescent Current per Amplifier
Note:
IO = 0, VCM = VDD – 0.5V
The SC-70 package is only tested at +25°C.
DS21881B-page 2
 2004 Microchip Technology Inc.
MCP6231/2
AC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VDD = +1.8 to 5.5V, VSS = GND, VCM = VDD/2,
VOUT ≈ VDD/2, RL = 100 kΩ to VDD/2 and CL = 60 pF.
Parameters
Sym
Min
Typ
Max
Units
Conditions
GBWP
—
300
—
kHz
Phase Margin
PM
—
65
—
°
Slew Rate
SR
—
0.10
—
V/µs
Input Noise Voltage
Eni
—
6.0
—
µVp-p
f = 0.1 Hz to 10 Hz
Input Noise Voltage Density
eni
—
52
—
nV/√Hz
f = 1 kHz
Input Noise Current Density
ini
—
0.6
—
fA/√Hz
f = 1 kHz
AC Response
Gain Bandwidth Product
G = +1
Noise
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, VDD = +1.8V to +5.5V and VSS = GND.
Parameters
Sym
Min
Typ
Max
Units
Extended Temperature Range
TA
–40
—
+125
°C
Operating Temperature Range
TA
–40
—
+125
°C
Storage Temperature Range
TA
–65
—
+150
°C
Thermal Resistance, 5L-SC70
θJA
—
331
—
°C/W
Thermal Resistance, 5L-SOT-23
θJA
—
256
—
°C/W
Thermal Resistance, 8L-PDIP
θJA
—
85
—
°C/W
Thermal Resistance, 8L-SOIC
θJA
—
163
—
°C/W
Thermal Resistance, 8L-MSOP
θJA
—
206
—
°C/W
Conditions
Temperature Ranges
Note
Thermal Package Resistances
Note:
The internal Junction Temperature (TJ) must not exceed the Absolute Maximum specification of +150°C.
 2004 Microchip Technology Inc.
DS21881B-page 3
MCP6231/2
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 = +1.8V to +5.5V, VSS = GND, VCM = VDD/2, VOUT ≈ VDD/2,
RL = 100 kΩ to VDD/2 and CL = 60 pF.
90
630 Samples
VCM = VSS
18%
VDD = 5.0V
16%
CMRR, PSRR (dB)
14%
12%
10%
8%
6%
85
PSRR (VCM = VSS)
80
75
CMRR (VCM = -0.3 V to +5.3 V)
4%
2%
70
-25
0
25
50
75
Ambient Temperature (°C)
Input Offset Voltage (mV)
FIGURE 2-1:
FIGURE 2-4:
Temperature.
Input Offset Voltage.
100
80
70
CMRR
60
PSRR+
50
40
30
1.E+01
1.E+02
10
1.E+03
100
1.E+04
1k
100k
Gain
-90
Phase
40
-120
20
-150
0
-180
1.E-01
1.E+00
0.1
1
1.E+01
1.E+02
630 Samples
VCM = VSS
TA = +85°C
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
FIGURE 2-5:
Frequency.
-210
Open-Loop Gain, Phase vs.
30%
Percentage of Occurrences
22%
20%
18%
16%
14%
12%
10%
8%
6%
4%
2%
0%
632 Samples
VCM = VSS
TA = +125°C
25%
20%
15%
10%
5%
Input Bias Current (pA)
FIGURE 2-3:
DS21881B-page 4
Input Bias Current at +85°C.
2.0
1.8
1.7
1.5
1.4
1.2
1.1
0.9
0.8
0.6
0.2
0.0
42
36
30
24
18
12
6
0%
0
Percentage of Occurrences
PSRR, CMRR vs.
-30
-60
60
Frequency (Hz)
FIGURE 2-2:
Frequency.
0
RL = 100.0 kΩ
VDD = 5.0V
VCM = VDD/2
80
-20
1.E+05
10k
100
0.3
20
125
CMRR, PSRR vs. Ambient
120
VDD = 5.0V
PSRR-
Open-Loop Gain (dB)
PSRR, CMRR (dB)
90
100
Open-Loop Phase (°)
-50
5
4
3
2
1
0
-1
-2
-3
-4
-5
0%
0.5
Percentage of Occurrences
20%
Input Bias Current (nA)
FIGURE 2-6:
Input Bias Current at +125°C.
 2004 Microchip Technology Inc.
MCP6231/2
Note: Unless otherwise indicated, TA = +25°C, VDD = +1.8V to +5.5V, VSS = GND, VCM = VDD/2, VOUT ≈ VDD/2,
RL = 100 kΩ to VDD/2 and CL = 60 pF.
20%
Percentage of Occurrences
Frequency (Hz)
FIGURE 2-7:
vs. Frequency.
Input Noise Voltage Density
FIGURE 2-10:
Input Offset Voltage Drift.
100
Input Offset Voltage (µV)
Input Offset Voltage (µV)
12
Input Offset Voltage Drift (µV/°C)
550
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
450
350
250
VDD = 1.8 V
0
-50
-100
-200
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)
Short Circuit Current (mA)
300
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
-100
-200
VDD = 5.5 V
FIGURE 2-9:
Input Offset Voltage vs.
Common Mode Input Voltage at VDD = 5.5V.
 2004 Microchip Technology Inc.
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
-300
Common Mode Input Voltage (V)
VDD = 1.8 V
-250
FIGURE 2-11:
Output Voltage.
FIGURE 2-8:
Input Offset Voltage vs.
Common Mode Input Voltage at VDD = 1.8V.
100
VDD = 5.5 V
-150
Common Mode Input Voltage (V)
200
VCM = VSS
50
-300
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
150
Input Offset Voltage (µV)
8
0%
100k
10
10k
2%
6
1k
1.E+05
4
100
1.E+04
2
10
1.E+03
4%
0
1
1.E+02
6%
-2
0.1
1.E+01
8%
-4
1.E+00
10%
-6
1.E-01
12%
-8
10
14%
-10
100
628 Samples
VCM = VSS
16%
TA = -40°C to +125°C
18%
-12
Input Noise Voltage Density
(nV/√Hz)
1,000
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
Input Offset Voltage vs.
+ISC
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
-ISC
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. Ambient Temperature.
DS21881B-page 5
MCP6231/2
Note: Unless otherwise indicated, TA = +25°C, VDD = +1.8V to +5.5V, VSS = GND, VCM = VDD/2, VOUT ≈ VDD/2,
RL = 100 kΩ to VDD/2 and CL = 60 pF.
120.00
Output Voltage (20 mV/div)
0.30
Slew Rate (V/µs)
Falling Edge, VDD = 5.5 V
0.25
Falling Edge, VDD = 1.8 V
80.00
0.20
60.00
40.00
0.15
20.00
Rising Edge, VDD = 5.5 V
0.10
0.00
Rising Edge, VDD = 1.8 V
0.05
-50
-25
0
25
50
75
100
Ambient Temperature (°C)
FIGURE 2-13:
Temperature.
125
-20.00
-9.E+00
-40.00
Slew Rate vs. Ambient
5.0
2.E+01
3.E+01
VDD - VOH
VOL - VSS
10
Small Signal Non-Inverting
G = +1 V/V
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
1
0.0001
0.1µ
0.5
0.001
1µ
0.01
10µ
0.1
100µ
1
1m
10
10m
0.0
-2.E+01
0.E+00
2.E+01
Output Current Magnitude (A)
FIGURE 2-14:
Output Voltage Headroom
vs. Output Current Magnitude.
FIGURE 2-17:
Pulse Response.
30
Quiescent Current per
Amplifier (µA)
10
Output Voltage Swing (Vp-p)
1.E+01
FIGURE 2-16:
Pulse Response.
1,000
100
1.E+00
Time (1 µs/div)
Output Voltage (V)
Output Voltage Headroom (mV)
G = +1 V/V
RL = 10 kΩ
100.00
VDD = 5.5 V
1
VDD = 1.8 V
0.1
1k
1000
FIGURE 2-15:
Frequency.
DS21881B-page 6
4.E+01
6.E+01
8.E+01
Time (20 µs/div)
1.E+02
1.E+02
1.E+02
Large Signal Non-Inverting
VCM = VDD - 0.5
25
20
15
10
5
TA = +125°C
TA = +85°C
TA = +25°C
TA = -40°C
0
100k
10k
10000
100000
Frequency (Hz)
1M
1000000
Output Voltage Swing vs.
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 2-18:
Quiescent Current vs.
Power Supply Voltage.
 2004 Microchip Technology Inc.
MCP6231/2
3.0
APPLICATION INFORMATION
–
The MCP6231/2 family of op amps is manufactured
using Microchip’s state-of-the-art CMOS process and
is specifically designed for low-cost, low-power and
general-purpose applications. The low supply voltage,
low quiescent current and wide bandwidth makes the
MCP6231/2 ideal for battery-powered applications.
3.1
6
VIN
( Maximum expected VIN ) – V DD
RIN ≥ ------------------------------------------------------------------------------2 mA
VOUT
FIGURE 3-2:
Resistor (RIN).
3
2
3.3
1
0
0.E+00
1.E+00
2.E+00
3.E+00
4.E+00
5.E+00
6.E+00
7.E+00
8.E+00
9.E+00
1.E+01
Time (1 ms/div)
FIGURE 3-1:
Phase Reversal.
Input Current-Limiting
Rail-to-Rail Output
The output voltage range of the MCP6231/2 op amps
is VDD – 35 mV (min.) and VSS + 35 mV (max.) when
RL = 10 kΩ is connected to VDD/2 and VDD = 5.5V.
Refer to Figure 2-14 for more information.
4
-1
V SS – ( Minimum expected V IN )
R IN ≥ ---------------------------------------------------------------------------2 mA
3.2
VDD = 5.0V
G = +2 V/V
5
VOUT
MCP623X
+
VIN
Rail-to-Rail Input
The MCP6231/2 op amps are designed to prevent
phase reversal when the input pins exceed the supply
voltages. Figure 3-1 shows the input voltage exceeding
the supply voltage without any phase reversal.
Input, Output Voltages (V)
RIN
The MCP6231/2 Show No
The input stage of the MCP6231/2 op amps use two
differential input stages in parallel. One operates at low
common mode input voltage (VCM) and the other at
high VCM. With this topology, the device operates with
VCM up to 300 mV above VDD and 300 mV below VSS.
The input offset voltage is measured at
VCM = VSS – 300 mV and VDD + 300 mV to ensure
proper operation.
Input voltages that exceed the input voltage range
(VSS – 0.3V to VDD + 0.3V at 25°C) can cause
excessive current to flow into or out of the input pins.
Current beyond ±2 mA can cause reliability problems.
Applications that exceed this rating must be externally
limited with a resistor, as shown in Figure 3-2.
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. A unity-gain buffer (G = +1) is the most
sensitive to capacitive loads, but all gains show the
same general behavior.
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 3-3) improves the
feedback loop’s phase margin (stability) by making the
output load resistive at higher frequencies. It does not,
however, improve the bandwidth.
–
VIN
MCP623X
+
RISO
VOUT
CL
FIGURE 3-3:
Output resistor, RISO
stabilizes large capacitive loads.
Figure 3-4 gives recommended RISO values for
different capacitive loads and gains. The x-axis is the
normalized load capacitance (CL/GN), where GN is the
circuit’s noise gain. For non-inverting gains, GN and the
gain are equal. For inverting gains, GN is 1 + |Gain|
(e.g., –1 V/V gives GN = +2 V/V).
 2004 Microchip Technology Inc.
DS21881B-page 7
MCP6231/2
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.
An example of this type of layout is shown in
Figure 3-5.
10k
Recommended RISO ( )
1.E+04
1k
1.E+03
VIN–
GN = 1 V/V
GN = 2 V/V
GN ≥ 4 V/V
100
10p
1.E+02
1.E+01
1.E+02
1.E+03
1.E+04
After selecting RISO for your circuit, double-check the
resulting frequency response peaking and step
response overshoot. Evaluation on the bench and
simulations with the MCP6231/2 SPICE macro model
are very helpful. Modify RISO’s value until the response
is reasonable.
Guard Ring
FIGURE 3-5:
for Inverting Gain.
1.
Supply Bypass
With this op amp, 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 highfrequency 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
other parts.
3.5
VSS
100p
1n
10n
Normalized Load Capacitance; CL/GN (F)
FIGURE 3-4:
Recommended RISO Values
for Capactive Loads.
3.4
VIN+
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, if current-to-flow. This is greater than the
MCP6231/2 family’s bias current at 25°C (1 pA, typ).
DS21881B-page 8
2.
Example Guard Ring Layout
Non-inverting Gain and Unity-Gain Buffer:
a. Connect the non-inverting pin (VIN+) to the
input with a wire that does not touch the
PCB surface.
b. Connect the guard ring to the inverting input
pin (VIN–). This biases the guard ring to the
common mode input voltage.
Inverting and transimpedance gain 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.
 2004 Microchip Technology Inc.
MCP6231/2
4.0
APPLICATION CIRCUITS
4.1
Matching the Impedance at the
Inputs
To minimize the effect of input bias current in an
amplifier circuit (this is important for very high sourceimpedance applications, such as pH meters and
transimpedance amplifiers), the impedance at both
inverting and non-inverting inputs needs to be
matched. This is done by choosing the circuit resistor
values so that the total resistance at each input is the
same. Figure 4-1 shows a summing amplifier circuit.
4.2
Compensating for the Parasitic
Capacitance
In analog circuit design, the PCB parasitic capacitance
can compromise the circuit behavior; Figure 4-2 shows
a typical scenario. If the input of an amplifier sees
parasitic capacitance of several picofarad (CPARA,
which includes the common mode capacitance of 6 pF,
typical), and large RF and RG, the frequency response
of the circuit will include a zero. This parasitic zero
introduces gain peaking and can cause circuit
instability.
RG2
VAC
VIN2
+
MCP623X
–
RG1
VIN1
RF
VDD
–
RX
MCP623X
RG
RF
CPARA
CF
VOUT
VDC
VOUT
+
RY
RZ
FIGURE 4-1:
Summing Amplifier Circuit.
To match the inputs, set all voltage sources to ground
and calculate the total resistance at the input nodes. In
this summing amplifier circuit, the resistance at the
inverting input is calculated by setting VIN1, VIN2 and
VOUT to ground. In this case, RG1, RG2 and RF are in
parallel. The total resistance at the inverting input is:
1
R VIN - = --------------------------------------------1
1
1
 --------+ --------- + ------
 R G1 R G2 RF
RG
C F = CPARA • ------RF
FIGURE 4-2:
Effect of Parasitic
Capacitance at the Input.
One solution is to use smaller resistor values to push
the zero to a higher frequency. Another solution is to
compensate by introducing a pole at the point at which
the zero occurs. This can be done by adding CF in
parallel with the feedback resistor (RF). CF needs to be
selected so that the ratio CPARA:CF is equal to the ratio
of RF:RG.
Where:
RVIN– = total resistance at the inverting input
At the non-inverting input, VDD is the only voltage
source. When VDD is set to ground, both Rx and Ry are
in parallel. The total resistance at the non-inverting
input is:
1
R VIN + = ------------------------- + R Z
1-
1
 ------ + ---- RX RY
Where:
RVIN+ = total resistance at the inverting
input
To minimize output offset voltage and increase circuit
accuracy, the resistor values need to meet the
conditions:
R VIN + = R VIN -
 2004 Microchip Technology Inc.
DS21881B-page 9
MCP6231/2
5.0
DESIGN TOOLS
Microchip provides the basic design tools needed for
the MCP6231/2 family of op amps.
5.1
SPICE Macro Model
The latest SPICE macro model for the MCP6231/2 op
amps is available on our web site at
www.microchip.com. This model is intended to be an
initial design tool that works well in the op amp’s linear
region of operation at room temperature. See the model
file for information on its capabilities.
Bench testing is a very important part of any design and
cannot be replaced with simulations. Also, simulation
results using this macro model need to be validated by
comparing them to the data sheet specifications and
characteristic curves.
5.2
FilterLab® Software
The FilterLab software is an innovative tool that simplifies analog active-filter (using op amps) design.
Available free of charge from our web site at
www.microchip.com, the FilterLab software active-filter
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.
DS21881B-page 10
 2004 Microchip Technology Inc.
MCP6231/2
6.0
PACKAGING INFORMATION
6.1
Package Marking Information
5-Lead SC-70 (MCP6231U Only)
Example:
XNN
YWW
ASN
418
Example:
5-Lead SOT-23
4
5
Device
XXNN
1
2
3
Code
MCP6231
BCNN
MCP6231R
BDNN
MCP6231U
BENN
Note:
Applies to 5-Lead SOT-23.
1
2
3
XXXXXX
6232E
YWWNNN
418256
8-Lead PDIP (300 mil)
XXXXXXXX
XXXXXNNN
YYWW
XXXXXXXX
XXXXYYWW
NNN
Legend:
XX...X
YY
WW
NNN
Example:
MCP6232
E/P256
0418
8-Lead SOIC (150 mil)
*
AA07
Example:
8-Lead MSOP
Note:
4
5
Example:
MCP6232
E/SN0418
256
Customer specific information*
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
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.
Standard marking consists of Microchip part number, year code, week code, traceability code (facility
code, mask rev#, and assembly code). For marking beyond this, certain price adders apply. Please
check with your Microchip Sales Office.
 2004 Microchip Technology Inc.
DS21881B-page 11
MCP6231/2
5-Lead Small Outline Transistor Package (SC-70)
E
E1
D
p
B
n
1
Q1
A2
c
A
A1
L
Units
Dimension Limits
n
p
Number of Pins
Pitch
Overall Height
Molded Package Thickness
Standoff
Overall Width
Molded Package Width
Overall Length
Foot Length
Top of Molded Pkg to Lead Shoulder
Lead Thickness
Lead Width
A
A2
A1
E
E1
D
L
Q1
c
B
MIN
.031
.031
.000
.071
.045
.071
.004
.004
.004
.006
INCHES
NOM
5
.026 (BSC)
MAX
.043
.039
.004
.094
.053
.087
.012
.016
.007
.012
MILLIMETERS*
NOM
5
0.65 (BSC)
0.80
0.80
0.00
1.80
1.15
1.80
0.10
0.10
0.10
0.15
MIN
MAX
1.10
1.00
0.10
2.40
1.35
2.20
0.30
0.40
0.18
0.30
*Controlling Parameter
Notes:
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
exceed .005" (0.127mm) per side.
JEITA (EIAJ) Standard: SC-70
Drawing No. C04-061
DS21881B-page 12
 2004 Microchip Technology Inc.
MCP6231/2
5-Lead Plastic Small Outline Transistor (OT) (SOT23)
E
E1
p
B
p1
n
D
1
α
c
A
L
β
Units
Dimension Limits
n
p
MIN
φ
A2
A1
INCHES*
NOM
5
.038
.075
.046
.043
.003
.110
.064
.116
.018
5
.006
.017
5
5
MAX
MIN
MILLIMETERS
NOM
5
0.95
1.90
1.18
1.10
0.08
2.80
1.63
2.95
0.45
5
0.15
0.43
5
5
Number of Pins
Pitch
p1
Outside lead pitch (basic)
Overall Height
A
.035
.057
0.90
Molded Package Thickness
A2
.035
.051
0.90
Standoff
A1
.000
.006
0.00
Overall Width
E
.102
.118
2.60
Molded Package Width
E1
.059
.069
1.50
Overall Length
D
.110
.122
2.80
Foot Length
L
.014
.022
0.35
φ
Foot Angle
0
10
0
c
Lead Thickness
.004
.008
0.09
Lead Width
B
.014
.020
0.35
α
Mold Draft Angle Top
0
10
0
β
Mold Draft Angle Bottom
0
10
0
*Controlling Parameter
Notes:
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
exceed .005" (0.127mm) per side.
MAX
1.45
1.30
0.15
3.00
1.75
3.10
0.55
10
0.20
0.50
10
10
EIAJ Equivalent: SC-74A
Drawing No. C04-091
 2004 Microchip Technology Inc.
DS21881B-page 13
MCP6231/2
8-Lead Plastic Micro Small Outline Package (MS) (MSOP)
E
E1
p
D
2
B
n
1
α
A2
A
c
φ
A1
(F)
L
β
Units
Dimension Limits
n
p
MIN
INCHES
NOM
8
.026 BSC
.033
.193 TYP.
.118 BSC
.118 BSC
.024
.037 REF
.006
.012
-
MAX
MILLIMETERS*
NOM
8
0.65 BSC
0.75
0.85
0.00
4.90 BSC
3.00 BSC
3.00 BSC
0.40
0.60
0.95 REF
0°
0.08
0.22
5°
5°
-
MIN
Number of Pins
Pitch
A
.043
Overall Height
A2
.030
.037
Molded Package Thickness
.000
.006
A1
Standoff
E
Overall Width
E1
Molded Package Width
D
Overall Length
L
.016
.031
Foot Length
Footprint (Reference)
F
φ
Foot Angle
0°
8°
c
Lead Thickness
.003
.009
.009
.016
Lead Width
B
α
Mold Draft Angle Top
5°
15°
β
5°
15°
Mold Draft Angle Bottom
*Controlling Parameter
Notes:
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not
exceed .010" (0.254mm) per side.
MAX
1.10
0.95
0.15
0.80
8°
0.23
0.40
15°
15°
JEDEC Equivalent: MO-187
Drawing No. C04-111
DS21881B-page 14
 2004 Microchip Technology Inc.
MCP6231/2
8-Lead Plastic Dual In-line (P) – 300 mil (PDIP)
E1
D
2
n
1
α
E
A2
A
L
c
A1
β
B1
p
eB
B
Units
Dimension Limits
n
p
Number of Pins
Pitch
Top to Seating Plane
Molded Package Thickness
Base to Seating Plane
Shoulder to Shoulder Width
Molded Package Width
Overall Length
Tip to Seating Plane
Lead Thickness
Upper Lead Width
Lower Lead Width
Overall Row Spacing
Mold Draft Angle Top
Mold Draft Angle Bottom
* Controlling Parameter
§ Significant Characteristic
§
A
A2
A1
E
E1
D
L
c
B1
B
eB
α
β
MIN
.140
.115
.015
.300
.240
.360
.125
.008
.045
.014
.310
5
5
INCHES*
NOM
MAX
8
.100
.155
.130
.170
.145
.313
.250
.373
.130
.012
.058
.018
.370
10
10
.325
.260
.385
.135
.015
.070
.022
.430
15
15
MILLIMETERS
NOM
8
2.54
3.56
3.94
2.92
3.30
0.38
7.62
7.94
6.10
6.35
9.14
9.46
3.18
3.30
0.20
0.29
1.14
1.46
0.36
0.46
7.87
9.40
5
10
5
10
MIN
MAX
4.32
3.68
8.26
6.60
9.78
3.43
0.38
1.78
0.56
10.92
15
15
Notes:
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed
.010” (0.254mm) per side.
JEDEC Equivalent: MS-001
Drawing No. C04-018
 2004 Microchip Technology Inc.
DS21881B-page 15
MCP6231/2
8-Lead Plastic Small Outline (SN) – Narrow, 150 mil (SOIC)
E
E1
p
D
2
B
n
1
α
h
45°
c
A2
A
φ
β
L
Units
Dimension Limits
n
p
Number of Pins
Pitch
Overall Height
Molded Package Thickness
Standoff §
Overall Width
Molded Package Width
Overall Length
Chamfer Distance
Foot Length
Foot Angle
Lead Thickness
Lead Width
Mold Draft Angle Top
Mold Draft Angle Bottom
* Controlling Parameter
§ Significant Characteristic
A
A2
A1
E
E1
D
h
L
φ
c
B
α
β
MIN
.053
.052
.004
.228
.146
.189
.010
.019
0
.008
.013
0
0
A1
INCHES*
NOM
8
.050
.061
.056
.007
.237
.154
.193
.015
.025
4
.009
.017
12
12
MAX
.069
.061
.010
.244
.157
.197
.020
.030
8
.010
.020
15
15
MILLIMETERS
NOM
8
1.27
1.35
1.55
1.32
1.42
0.10
0.18
5.79
6.02
3.71
3.91
4.80
4.90
0.25
0.38
0.48
0.62
0
4
0.20
0.23
0.33
0.42
0
12
0
12
MIN
MAX
1.75
1.55
0.25
6.20
3.99
5.00
0.51
0.76
8
0.25
0.51
15
15
Notes:
Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed
.010” (0.254mm) per side.
JEDEC Equivalent: MS-012
Drawing No. C04-057
DS21881B-page 16
 2004 Microchip Technology Inc.
MCP6231/2
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
Device
Tape and Reel
and/or
Alternate Pinout
Device:
-X
Temperature Package
Range
MCP6231:
MCP6231T:
MCP6231RT:
MCP6231UT:
MCP6232:
MCP6232T:
/XX
Single Op Amp (MSOP, PDIP, SOIC)
Single Op Amp (Tape and Reel) (SOT-23)
Single Op Amp (Tape and Reel) (SOT-23)
Single Op Amp (Tape and Reel)
(SC-70, SOT-23)
Dual Op Amp (MSOP, PDIP, SOIC)
Dual Op Amp (Tape and Reel)
Temperature Range:
E
= -40°C to +125°C
Package:
LT
MS
P
OT
=
=
=
=
Plastic Package (SC-70), 5-lead (MCP6231U only)
Plastic Micro Small Outline (MSOP), 8-lead
Plastic DIP (300 mil Body), 8-lead
Plastic Small Outline Transistor (SOT-23), 5-lead
(MCP6231, MCP6231R, MCP6231U)
SN = Plastic SOIC, (150 mil Body), 8-lead
Examples:
a)
b)
c)
d)
e)
f)
g)
MCP6231-E/SN:
Extended Temp.,
8LD SOIC pkg.
MCP6231-E/MS: Extended Temp.,
8LD MSOP pkg.
MCP6231-E/P:
Extended Temp.,
8LD PDIP pkg.
MCP6231RT-E/OT: Tape and Reel,
Extended Temp.,
5LD SOT-23 pkg
MCP6231UT-E/OT: Tape and Reel,
Extended Temp.,
5LD SOT-23 pkg.
MCP6231UT-E/LT: Tape and Reel,
Extended Temp.,
5LD SC-70 pkg.
MCP6231T-E/OT: Tape and Reel,
Extended Temp.,
5LD SOT-23 pkg.
a)
MCP6232-E/SN:
b)
MCP6232-E/MS:
c)
MCP6232-E/P:
d)
MCP6232T-E/SN:
Extended Temp.,
8LD SOIC pkg.
Extended Temp.,
8LD MSOP pkg.
Extended Temp.,
8LD PDIP pkg.
Tape and Reel,
Extended Temp.,
SOIC pkg.
Sales and Support
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and
recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1.
2.
3.
Your local Microchip sales office
The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
 2004 Microchip Technology Inc.
DS21881B-page 17
MCP6231/2
NOTES:
DS21881B-page 18
 2004 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 intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical
components in life support systems is not authorized except
with express written approval by Microchip. No licenses are
conveyed, implicitly or otherwise, under any intellectual
property rights.
Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro,
PICSTART, PRO MATE, PowerSmart, rfPIC, and
SmartShunt are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
AmpLab, FilterLab, MXDEV, MXLAB, PICMASTER, 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, dsPICDEM,
dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,
FanSense, FlexROM, fuzzyLAB, In-Circuit Serial
Programming, ICSP, ICEPIC, Migratable Memory, MPASM,
MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net,
PICLAB, PICtail, PowerCal, PowerInfo, PowerMate,
PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial,
SmartTel and Total Endurance 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.
© 2004, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 quality system certification for
its worldwide headquarters, design and wafer fabrication facilities in
Chandler and Tempe, Arizona and Mountain View, California in
October 2003. The Company’s quality system processes and
procedures are for its PICmicro® 8-bit MCUs, 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.
 2004 Microchip Technology Inc.
DS21881B-page 19
WORLDWIDE SALES AND SERVICE
AMERICAS
China - Chengdu
Taiwan
Corporate Office
Ming Xing Financial Tower
Chengdu 610016, China
Tel: 86-28-86766200
Fax: 86-28-86766599
Kaohsiung Branch
Kaohsiung 806, Taiwan
Tel: 886-7-536-4816
Fax: 886-7-536-4817
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Tel: 86-591-7503506
Fax: 86-591-7503521
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Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
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Taiwan
Metroplaza
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Tel: 852-2401-1200
Fax: 852-2401-3431
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Tel: 886-3-572-9526
Fax: 886-3-572-6459
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Japan
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Italy
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Fax: 82-2-558-5932 or 82-2-558-5934
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Singapore, 188980
Tel: 65-6334-8870
Fax: 65-6334-8850
08/16/04
DS21881B-page 20
 2004 Microchip Technology Inc.