Microchip MCP6244T-E/LT 50 î¼a, 550 khz rail-to-rail op amp Datasheet

MCP6241/1R/1U/2/4
50 µA, 550 kHz Rail-to-Rail Op Amp
Features
Description
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The Microchip Technology Inc. MCP6241/1R/1U/2/4
operational amplifiers (op amps) provide wide
bandwidth for the quiescent current. The MCP6241/1R/
1U/2/4 has a 550 kHz gain bandwidth product and 68°
(typical) phase margin. This family operates from a
single supply voltage as low as 1.8V, while drawing
50 µA (typical) quiescent current. In addition, the
MCP6241/1R/1U/2/4 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: 550 kHz (typical)
Supply Current: IQ = 50 µA (typical)
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
Photodiode (Transimpedance) Amplifier
Analog Filters
Notebooks and PDAs
Battery-Powered Systems
Package Types
MCP6241
VOUT 1
Design Aids
VSS 2
SPICE Macro Models
Mindi™ Circuit Designer & Simulator
Microchip Advanced Part Selector (MAPS)
Analog Demonstration and Evaluation Boards
Application Notes
+
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MCP6241
PDIP, SOIC, MSOP
SOT-23-5
NC 1
VIN– 2
–
7 VDD
4 VIN–
VIN+ 3
+
6 VOUT
–
VIN+ 3
8 NC
VSS 4
MCP6241R
SOT-23-5
5 NC
MCP6242
PDIP, SOIC, MSOP
5 VSS
VOUT 1
+
VDD 2
Typical Application
5 VDD
VOUTA 1
VINA_ 2
–
VIN+ 3
4 VIN–
VINA+ 3
8 VDD
7 VOUTB
- +
6 VINB_
+ -
VSS 4
RG2
5 VINB+
VIN2
RG1
VIN1
RF
MCP6244
PDIP, SOIC, TSSOP
5 VDD
VIN+ 1
–
RX
MCP6241
+
RZ
+
VDD
RY
MCP6241U
SC-70-5, SOT-23-5
VSS 2
VOUT
–
VIN– 3
- + + - 13 VIND–
4 VOUT VINA+ 3
12 VIND+
MCP6241
2x3 DFN*
VIN– 2
VIN+ 3
VSS 4
8 NC
EP
9
14 VOUTD
VINA– 2
VDD 4
NC 1
Summing Amplifier Circuit
VOUTA 1
VINB+ 5
11 VSS
VINB– 6
10 VINC+
- + +- 9 V –
INC
VOUTB 7
8 VOUTC
7 VDD
6 VOUT
5 NC
* Includes Exposed Thermal Pad (EP); see Table 3-1.
© 2008 Microchip Technology Inc.
DS21882D-page 1
MCP6241/1R/1U/2/4
NOTES:
DS21882D-page 2
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
1.0
ELECTRICAL
CHARACTERISTICS
VDD – VSS ........................................................................7.0V
† 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.
Current at Analog Input Pins (VIN+, VIN–).....................±2 mA
†† See Section 4.1.2 “Input Voltage and Current Limits”.
Absolute Maximum Ratings †
Analog Inputs (VIN+, VIN–) †† ........ VSS – 1.0V to VDD + 1.0V
All Other Inputs and Outputs ......... VSS – 0.3V to VDD + 0.3V
Difference Input Voltage ...................................... |VDD – VSS|
Output Short Circuit Current ................................ Continuous
Current at Output and Supply Pins ............................±30 mA
Storage Temperature .................................. –65° C to +150°C
Maximum Junction Temperature (TJ)......................... .+150°C
ESD Protection On All Pins (HBM; MM) .............. ≥ 4 kV; 300V
DC ELECTRICAL CHARACTERISTICS
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
Conditions
Input Offset Voltage
VOS
-5.0
—
+5.0
mV
VCM = VSS
Extended Temperature
VOS
-7.0
—
+7.0
mV
TA= -40°C to +125°C,
VCM = VSS (Note 1)
ΔVOS/ΔTA
—
±3.0
—
PSRR
—
83
—
dB
IB
—
±1.0
—
pA
At Temperature
IB
—
20
—
pA
TA = +85°C
At Temperature
IB
—
1100
—
pA
TA = +125°C
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
60
75
—
dB
VCM = -0.3V to 5.3V, VDD = 5V
AOL
90
110
—
dB
VOUT = 0.3V to VDD – 0.3V,
VCM = VSS
—
VDD – 35
mV
RL = 10 kΩ, 0.5V Input
Overdrive
Input Offset
Input Offset Drift with
Temperature
Power Supply Rejection
µV/°C TA= -40°C to +125°C,
VCM = VSS
VCM = VSS
Input Bias Current and Impedance
Input Bias Current:
Common Mode
Open-Loop Gain
DC Open-Loop Gain
(large signal)
Output
Maximum Output Voltage Swing
Output Short-Circuit Current
VOL, VOH VSS + 35
ISC
—
±6
—
mA
VDD = 1.8V
ISC
—
±23
—
mA
VDD = 5.5V
VDD
1.8
—
5.5
V
IQ
30
50
70
µA
Power Supply
Supply Voltage
Quiescent Current per Amplifier
Note 1:
IO = 0, VCM = VDD – 0.5V
The SC-70 package is only tested at +25°C.
© 2008 Microchip Technology Inc.
DS21882D-page 3
MCP6241/1R/1U/2/4
AC ELECTRICAL CHARACTERISTICS
Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VDD = +1.8 to 5.5V, VSS = GND, VCM = VDD/2,
VOUT ≈ VDD/2, RL = 10 kΩ to VDD/2 and CL = 60 pF.
Parameters
Sym
Min
Typ
Max
Units
Conditions
GBWP
—
550
—
kHz
Phase Margin
PM
—
68
—
°
Slew Rate
SR
—
0.30
—
V/µs
Input Noise Voltage
Eni
—
10
—
µVP-P
Input Noise Voltage Density
eni
—
45
—
nV/√Hz
f = 1 kHz
Input Noise Current Density
ini
—
0.6
—
fA/√Hz
f = 1 kHz
AC Response
Gain Bandwidth Product
G = +1 V/V
Noise
f = 0.1 Hz to 10 Hz
TEMPERATURE CHARACTERISTICS
Electrical Characteristics: Unless otherwise indicated, VDD = +1.8V to +5.5V and VSS = GND.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Temperature Ranges
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-DFN (2x3)
θJA
—
84.5
—
°C/W
Thermal Resistance, 8L-MSOP
θJA
—
206
—
°C/W
Thermal Resistance, 8L-PDIP
θJA
—
85
—
°C/W
Thermal Resistance, 8L-SOIC
θJA
—
163
—
°C/W
Thermal Resistance, 14L-PDIP
θJA
—
70
—
°C/W
Thermal Resistance, 14L-SOIC
θJA
—
120
—
°C/W
Thermal Resistance, 14L-TSSOP
θJA
—
100
—
°C/W
(Note)
Thermal Package Resistances
Note:
1.1
The internal Junction Temperature (TJ) must not exceed the Absolute Maximum specification of +150°C.
Test Circuits
The test circuits used for the DC and AC tests are
shown in Figure 1-1 and Figure 1-2. The bypass
capacitors are laid out according to the rules discussed
in Section 4.6 “PCB Surface Leakage”.
VDD
VDD/2
RN
VDD
VIN
RN
VOUT
MCP624X
0.1 µF 1 µF
CL
VOUT
MCP624X
CL
VDD/2 RG
0.1 µF 1 µF
RL
RF
VIN
RG
RL
RF
VL
FIGURE 1-2:
AC and DC Test Circuit for
Most Inverting Gain Conditions.
VL
FIGURE 1-1:
AC and DC Test Circuit for
Most Non-Inverting Gain Conditions.
DS21882D-page 4
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/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.
90
85
PSRR (VCM = VSS)
80
75
CMRR (VCM = -0.3V to +5.3V,
VDD = 5.0V)
5
-50
-25
Input Offset Voltage (mV)
FIGURE 2-4:
Temperature.
110
Open-Loop Gain (dB)
40
30
20%
15%
10%
5%
42
36
30
24
18
0%
12
-150
0
-180
FIGURE 2-5:
Frequency.
180 Samples
VCM = VDD/2
TA = +85°C
6
20
-20
-210
0.1 1.E+
1 1.E+
10 1.E+
100 1.E+
1k 1.E+
10k 100k
1M 10M
1.E1.E+ 1.E+
1.E+
01 00 01 Frequency
02 03 (Hz)
04 05 06 07
100k
1.E+05
PSRR, CMRR vs.
30%
25%
20%
Input Bias Current at +85°C.
© 2008 Microchip Technology Inc.
Open-Loop Gain, Phase vs.
180 Samples
VCM = VDD/2
TA = +125°C
15%
10%
5%
0%
Input Bias Current (nA)
Input Bias Current (pA)
FIGURE 2-3:
-120
0.6
25%
0
Percentage of Occurrences
FIGURE 2-2:
Frequency.
1k
10k
1.E+03
1.E+04
Frequency (Hz)
40
0.0
100
1.E+02
Percentage of Occurrences
20
10
1.E+01
-90
Phase
2.0
50
-30
1.8
60
0
-60
60
1.0
PSRR+
80
0.4
70
RL = 10.0 kΩ
VCM = VDD/2
Gain
0.8
CMRR
80
100
0.2
PSRR, CMRR (dB)
PSRR-
90
125
CMRR, PSRR vs. Ambient
120
100
100
1.6
Input Offset Voltage.
1.4
FIGURE 2-1:
0
25
50
75
Ambient Temperature (°C)
1.2
4
3
2
1
0
-1
-2
-3
70
Open-Loop Phase (°)
CMRR, PSRR (dB)
630 Samples
VCM = VSS
-4
20%
18%
16%
14%
12%
10%
8%
6%
4%
2%
0%
-5
Percentage of Occurrences
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.
FIGURE 2-6:
+125°C.
Input Bias Current at
DS21882D-page 5
MCP6241/1R/1U/2/4
FIGURE 2-7:
vs. Frequency.
Input Noise Voltage Density
FIGURE 2-10:
VDD = 1.8V
200
100
0
TA = -40°C
TA = +25°C
TA = +85°C
TA = +125°C
-100
-200
500
450
400
100
TA = -40°C
TA = +25°C
TA = +85°C
TA = +125°C
-100
Common Mode Input Voltage (V)
FIGURE 2-9:
Input Offset Voltage vs.
Common Mode Input Voltage at VDD = 5.5V.
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
-200
DS21882D-page 6
12
10
8
6
4
VDD = 5.5V
VDD = 1.8V
350
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Short Circuit Current (mA)
200
0
2
550
FIGURE 2-11:
Output Voltage.
VDD = 5.5V
300
0
600
Output Voltage (V)
FIGURE 2-8:
Input Offset Voltage vs.
Common Mode Input Voltage at VDD = 1.8V.
400
-2
VCM = VSS
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
-300
-4
Input Offset Voltage Drift.
650
Common Mode Input Voltage (V)
Input Offset Voltage (µV)
-6
Input Offset Voltage Drift (µV/°C)
700
300
Input Offset Voltage (µV)
-8
10
0.1 1.E+0
1
10
100 1.E+0
1k 1.E+0
10k 1.E+0
100k
1.E-01
1.E+0
1.E+0
Frequency
0
1
2 (Hz)
3
4
5
628 Samples
VCM = VSS
TA = -40°C to +125°C
-10
100
20%
18%
16%
14%
12%
10%
8%
6%
4%
2%
0%
-12
1,000
Percentage of Occurrences
10,000
Input Offset Voltage (µV)
Input Noise Voltage Density
(nV/√Hz)
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.
35
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
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.
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
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.
0.50
Slew Rate (V/µs)
0.40
Falling Edge
0.35
0.30
0.25
0.20
VDD = 1.8V
0.15
Rising Edge
0.10
-50
-25
FIGURE 2-13:
Temperature.
0
25
50
75
100
Ambient Temperature (°C)
125
Time (1 µs/div)
Slew Rate vs. Ambient
FIGURE 2-16:
Pulse Response.
VDD – VOH
VOL – VSS
10
1
10µ
1.E-02
3.5
3.0
2.5
2.0
1.5
1.0
100µ
1m
1.E-01
1.E+00
Output Current Magnitude (A)
10m
1.E+01
0.0
Time (10 µs/div)
FIGURE 2-17:
Pulse Response.
80
10
70
Quiescent Current
per Amplifier (µA)
Output Voltage Swing (VP-P )
VDD = 5.0V
G = +1 V/V
4.5
4.0
0.5
FIGURE 2-14:
Output Voltage Headroom
vs. Output Current Magnitude.
VDD = 5.5V
1
VDD = 1.8V
Large-Signal, Non-Inverting
VCM = 0.9VDD
60
50
40
30
20
10
0.1
1k
1.E+03
Small-Signal, Non-Inverting
5.0
Output Voltage (V)
Output Voltage Headroom
(mV)
1,000
100
G = +1 V/V
RL = 10 kΩ
Output Voltage (10 mV/div)
VDD = 5.5V
0.45
TA =
TA =
TA =
TA =
+125°C
+85°C
+25°C
-40°C
0
10k
100k
1.E+04
1.E+05
Frequency (Hz)
1M
1.E+06
FIGURE 2-15:
Maximum Output Voltage
Swing vs. Frequency.
© 2008 Microchip Technology Inc.
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.
DS21882D-page 7
MCP6241/1R/1U/2/4
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.
Input Current Magnitude (A)
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
+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
Input Voltage (V)
FIGURE 2-19:
Measured Input Current vs.
Input Voltage (below VSS).
DS21882D-page 8
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/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
MCP6241
MCP6241U
DFN
MSOP, PDIP,
SOIC
SOT-23-5
SOT-23-5
SOT-23-5,
SC-70
6
6
1
1
4
2
2
4
4
3
3
3
3
7
7
5
4
4
2
1, 5, 8
1, 5, 8
9
—
TABLE 3-2:
3
VIN–
Inverting Input
1
VIN+
Non-inverting Input
2
5
VDD
Positive Power Supply
5
2
VSS
Negative Power Supply
—
—
—
NC
No Internal Connection
—
—
—
EP
Exposed Thermal Pad (EP);
must be connected to VSS.
PIN FUNCTION TABLE FOR DUAL AND QUAD OP AMPS
MSOP, PDIP, SOIC
PDIP, SOIC, TSSOP
Symbol
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
Positive Power Supply
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)
—
9
VINC–
Inverting Input (op amp C)
—
10
VINC+
Non-inverting Input (op amp C)
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.
Analog Inputs
The non-inverting and inverting inputs are highimpedance CMOS inputs with low bias currents.
3.3
Description
Analog Output
MCP6244
3.2
Symbol
VOUT
MCP6242
3.1
MCP6241R
Power Supply (VSS and VDD)
The positive power supply (VDD) is 1.8V to 5.5V higher
than the negative power supply (VSS). For normal
operation, the other pins are between VSS and VDD.
© 2008 Microchip Technology Inc.
Negative Power Supply
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.
3.4
Exposed Thermal Pad (EP)
There is an internal electrical connection between the
Exposed Thermal Pad (EP) and the VSS pin; they must
be connected to the same potential on the Printed
Circuit Board (PCB).
DS21882D-page 9
MCP6241/1R/1U/2/4
NOTES:
DS21882D-page 10
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
4.0
APPLICATION INFORMATION
The MCP6241/1R/1U/2/4 family of op amps is manufactured using Microchip’s state-of-the-art CMOS
process and is specifically designed for low-power and
general-purpose applications. The low supply voltage,
low quiescent current and wide bandwidth makes the
MCP6241/1R/1U/2/4 ideal for battery-powered
applications.
4.1
Rail-to-Rail Inputs
4.1.1
The MCP6241/1R/1U/2/4 op amp is designed to
prevent phase reversal when the input pins exceed the
supply voltages. Figure 4-1 shows the input voltage
exceeding the supply voltage without any phase
reversal.
Input, Output Voltage (V)
VOUT
5
4
VIN+ Bond
Pad
Bond V –
IN
Pad
Input
Stage
VSS Bond
Pad
PHASE REVERSAL
6
VDD Bond
Pad
VDD = 5.0V
G = +2 V/V
VIN
3
2
1
0
-1
FIGURE 4-2:
Structures.
Simplified Analog Input ESD
In order to prevent damage and/or improper operation
of these op amps, the circuit they are in must limit the
currents and voltages at the VIN+ and VIN– pins (see
Absolute Maximum Ratings † at the beginning of
Section 1.0 “Electrical Characteristics”). Figure 4-3
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. When
implemented as shown, resistors R1 and R2 also limit
the current through D1 and D2.
Time (1 ms/div)
VDD
FIGURE 4-1:
The MCP6241/1R/1U/2/4
Show No Phase Reversal.
4.1.2
INPUT VOLTAGE AND CURRENT
LIMITS
The ESD protection on the inputs can be depicted as
shown in Figure 4-2. This structure was chosen to
protect the input transistors, and to minimize input bias
current (IB). The input ESD diodes clamp the inputs
when they try to go more than one diode drop below
VSS. They also clamp any voltages that go too far
above VDD; their breakdown voltage is high enough to
allow normal operation, and low enough to bypass
quick ESD events within the specified limits.
D1
D2
V1
R1
MCP624X
V2
R2
R3
VSS – (minimum expected V1)
2 mA
VSS – (minimum expected V2)
R2 >
2 mA
R1 >
FIGURE 4-3:
Inputs.
Protecting the Analog
It is also possible to connect the diodes to the left of
resistors R1 and R2. In this case, current through the
diodes D1 and D2 needs to be limited by some other
mechanism. The resistors then serve as in-rush current
limiters; the DC current into the input pins (VIN+ and
VIN–) should be very small.
© 2008 Microchip Technology Inc.
DS21882D-page 11
MCP6241/1R/1U/2/4
4.1.3
NORMAL OPERATION
1.E+03
1k
The input stage of the MCP6241/1R/1U/2/4 op amps
use two differential CMOS input stages in parallel. One
operates at low common mode input voltage (VCM),
while the other operates at high VCM. WIth this topology, the device operates with VCM up to 0.3V above
VDD and 0.3V below VSS.
4.2
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., > 70 pF when G = +1), a small series
resistor at the output (RISO in Figure 4-4) 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.
–
VIN
MCP624X
+
GN = +1 V/V
GN ≥ +2 V/V
100
1.E+02
10p
100p
1n
10n
1.E+01
1.E+02
1.E+03
1.E+04
Normalized Load Capacitance; CL/GN (F)
FIGURE 4-5:
Recommended RISO Values
for Capacitive Loads.
Rail-to-Rail Output
The output voltage range of the MCP6241/1R/1U/2/4
op amps is VDD – 35 mV (maximum) and VSS + 35 mV
(minimum) when RL = 10 kΩ is connected to VDD/2 and
VDD = 5.5V. Refer to Figure 2-14 for more information.
4.3
1.E+04
10k
Recommended R ISO (Ω)
A significant amount of current can flow out of the
inputs when the common mode voltage (VCM) is below
ground (VSS); see Figure 2-19. Applications that are
high impedance may need to limit the useable voltage
range.
RISO
VOUT
CL
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 MCP6241/1R/1U/2/4 SPICE
macro model are very helpful. Modify RISO’s value until
the response is reasonable.
4.4
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 can use 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 nearby analog parts.
4.5
Unused Op Amps
An unused op amp in a quad package (MCP6244)
should be configured as shown in Figure 4-6. Both
circuits prevent the output from toggling and causing
crosstalk. Circuit A can use any reference voltage
between the supplies, provides a buffered DC voltage,
and minimizes the supply current draw of the unused
op amp. Circuit B minimizes the number of
components, but may draw a little more supply current
for the unused op amp.
¼ MCP6244 (A)
¼ MCP6244 (B)
VDD
FIGURE 4-4:
Output Resistor, RISO
stabilizes large capacitive loads.
Figure 4-5 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
signal gain are equal. For inverting gains, GN is
1 + |Signal Gain| (e.g., –1 V/V gives GN = +2 V/V).
R1
VDD
VDD
R2
R2
V REF = V DD ⋅ -----------------R1 + R2
FIGURE 4-6:
DS21882D-page 12
VREF
Unused Op Amps.
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
4.6
PCB Surface Leakage
4.7
In applications where low input bias current is critical,
PCB (printed circuit board) 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, which is greater than the
MCP6241/1R/1U/2/4 family’s bias current at 25°C
(1 pA, typical).
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 4-7.
VIN-
VIN+
Application Circuits
4.7.1
MATCHING THE IMPEDANCE AT
THE INPUTS
To minimize the effect of offset voltage in an amplifier
circuit, the impedances at the inverting and noninverting inputs need to be matched. This is done by
choosing the circuit resistor values so that the total
resistance at each input is the same. Figure 4-8 shows
a summing amplifier circuit.
RG2
VIN2
RG1
VIN1
RF
VDD
VSS
–
RX
MCP6241
VOUT
+
RY
Guard Ring
FIGURE 4-7:
for Inverting Gain.
1.
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 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.
RZ
FIGURE 4-8:
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
R
R ⎠
G1
G2
F
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 + = ------------------------ + RZ
1-⎞
1- + ----⎛ ----⎝R
⎠
X RY
Where:
RVIN+ = total resistance at the inverting
input
To minimize offset voltage and increase circuit
accuracy, the resistor values need to meet the
condition:
R VIN + = R VIN –
© 2008 Microchip Technology Inc.
DS21882D-page 13
MCP6241/1R/1U/2/4
4.7.2
COMPENSATING FOR THE
PARASITIC CAPACITANCE
In analog circuit design, the PCB parasitic capacitance
can compromise the circuit behavior; Figure 4-9 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.
+
VAC
MCP624X
–
RG
VOUT
RF
VDC
CPARA
CF
RG
C F = C PARA • ------RF
FIGURE 4-9:
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 .
DS21882D-page 14
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
5.0
DESIGN AIDS
Microchip provides the basic design tools needed for
the MCP6241/1R/1U/2/4 family of op amps.
5.1
SPICE Macro Model
The latest SPICE macro model for the MCP6241/1R/
1U/2/4 op amps is available on the Microchip 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 over the temperature range. 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
Mindi™ Circuit Designer &
Simulator
Microchip’s Mindi™ Circuit Designer & Simulator aids
in the design of various circuits useful for active filter,
amplifier and power-management applications. It is a
free online circuit designer & simulator available from
the Microchip web site at www.microchip.com/mindi.
This interactive circuit designer & simulator enables
designers to quickly generate circuit diagrams, simulate circuits. Circuits developed using the Mindi Circuit
Designer & Simulator can be downloaded to a personal
computer or workstation.
5.3
Microchip Advanced Part Selector
(MAPS)
MAPS is a software tool that helps semiconductor
professionals 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.
© 2008 Microchip Technology Inc.
5.4
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.
Two of our boards that are especially useful are:
• P/N SOIC8EV: 8-Pin SOIC/MSOP/TSSOP/DIP
Evaluation Board
• P/N SOIC14EV: 14-Pin SOIC/TSSOP/DIP
Evaluation Board
5.5
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
These application notes and others are listed in the
design guide:
“Signal Chain Design Guide”, DS21825
DS21882D-page 15
MCP6241/1R/1U/2/4
NOTES:
DS21882D-page 16
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
6.0
PACKAGING INFORMATION
6.1
Package Marking Information
5-Lead SC-70 (MCP6241U Only)
Example:
XXNN
AT25
5-Lead SOT-23 (MCP6241, MCP6241R, MCP6241U)
5
4
XXNN
1
2
3
Device
Code
MCP6241
BQNN
MCP6241R
BRNN
MCP6241U
BSNN
Note:
Example:
5
4
BQ25
Applies to 5-Lead SOT-23.
8-Lead DFN (2x3) (MCP6241 Only)
1
2
3
Example:
XXX
YWW
NN
AER
834
25
Example:
8-Lead MSOP
XXXXXX
6242E
YWWNNN
834256
8-Lead PDIP (300 mil)
XXXXXXXX
XXXXXNNN
YYWW
Legend: XX...X
Y
YY
WW
NNN
e3
*
Note:
Example:
MCP6242
E/P256
0818
OR
MCP6242
3
E/P e^^256
0834
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.
© 2008 Microchip Technology Inc.
DS21882D-page 17
MCP6241/1R/1U/2/4
Package Marking Information (Continued)
8-Lead SOIC (150 mil)
XXXXXXXX
XXXXYYWW
NNN
14-Lead PDIP (300 mil) (MCP6244)
Example:
MCP6242
E/SN0818
256
OR
Example:
MCP6244
e3
E/P^^
0546256
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX
YYWWNNN
14-Lead SOIC (150 mil) (MCP6244)
MCP6242E
e3 0834
SN^^
256
Example:
MCP6244
e3
E/SL^^
0546256
XXXXXXXXXX
XXXXXXXXXX
YYWWNNN
14-Lead TSSOP (MCP6244)
Example:
XXXXXXXX
YYWW
6244E
0546
NNN
256
DS21882D-page 18
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DS21882D-page 28
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
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© 2008 Microchip Technology Inc.
DS21882D-page 31
MCP6241/1R/1U/2/4
NOTES:
DS21882D-page 32
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/2/4
APPENDIX A:
REVISION HISTORY
Revision D (October 2008)
The following is the list of modifications:
1.
Changed Heading “Available Tools” to “Design
Aids”.
2. Design Aids: Name change for Mindi Simulator
Tool.
3. Package Types: Added DFN to MCP6231
Device.
4. Absolute Maximum Ratings: Numerous
changes in this section.
5. Updated notes to Section 1.0 “Electrical Characteristics”.
6. Added Figure 2-19.
7. Numerous changes to Section 3.0 “Pin
Descriptions”.
8. Added Section 4.1.1 “Phase Reversal”,
Section 4.1.2 “Input Voltage and Current
Limits”, and Section 4.1.3 “Normal Operation”.
9. Replaced Section 5.0 “Design Aids” with
additional information.
10. Added 2x3 DFN package to Section 6.0 “Packaging Information” and updated Package Outline Drawings.
11. Added 2x3 DFN package to Product Identification System section.
Revision C (March 2005)
The following is the list of modifications:
1.
2.
3.
4.
5.
6.
Added the MCP6244 quad op amp.
Re-compensated parts. Specifications that
change are: Gain Bandwidth Product (BWP)
and Phase Margin (PM) in AC Electrical
Characteristics table.
Corrected plots in Section 2.0 “Typical Performance Curves”.
Added Section 3.0 “Pin Descriptions”.
Added new SC-70 package markings. Added
PDIP-14, SOIC-14, and TSSOP-14 packages
and corrected package marking information
(Section 6.0 “Packaging Information”).
Added Appendix A: “Revision History”.
Revision B (August 2004)
Undocumented changes.
Revision A (March 2004)
• Original Release of this Document.
© 2008 Microchip Technology Inc.
DS21882D-page 33
MCP6241/1R/1U/2/4
NOTES:
DS21882D-page 34
© 2008 Microchip Technology Inc.
MCP6241/1R/1U/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
Device
Tape and Reel
and/or
Alternate Pinout
Device:
-X
/XX
Temperature Package
Range
MCP6241:
MCP6241T:
MCP6241RT:
MCP6241UT:
MCP6242:
MCP6242T:
MCP6244:
MCP6244T:
Single Op Amp (MSOP, PDIP, SOIC)
Single Op Amp (Tape and Reel)
(MSOP, SOIC, SOT-23)
Single Op Amp (Tape and Reel)
(SOT-23)
Single Op Amp (Tape and Reel)
(SC-70, SOT-23)
Dual Op Amp
Dual Op Amp (Tape and Reel)
(MSOP, SOIC)
Quad Op Amp
Quad Op Amp (Tape and Reel)
(SOIC, TSSOP)
Temperature Range:
E
Package:
LT = Plastic Package (SC-70), 5-lead (MCP6241U only)
MC = Plastic Dual Flat, No Lead (DFN), 8-lead,
(MCP6241 only)
MS = Plastic Micro Small Outline (MSOP), 8-lead
P
= Plastic DIP (300 mil Body), 8-lead, 14-lead
OT = Plastic Small Outline Transistor (SOT-23), 5-lead
(MCP6241, MCP6241R, MCP6241U)
SN = Plastic SOIC (150 mil Body), 8-lead
SL = Plastic SOIC (150 mil Body), 14-lead
ST = Plastic TSSOP (4.4 mil Body), 14-lead
Examples:
a)
b)
c)
d)
e)
f)
g)
= -40° C to +125° C
© 2008 Microchip Technology Inc.
MCP6241-E/SN:
Extended Temp.,
8LD SOIC package.
MCP6241-E/MS: Extended Temp.,
8LD MSOP package.
MCP6241-E/P:
Extended Temp.,
8LD PDIP package.
MCP6241-E/MC: Extended Temp.,
8LD DFN package.
MCP6241RT-E/OT: Tape and Reel,
Extended Temp.,
5LD SOT-23 package
MCP6241UT-E/OT: Tape and Reel,
Extended Temp.,
5LD SOT-23 package.
MCP6241UT-E/LT: Tape and Reel,
Extended Temp.,
5LD SC-70 package.
a)
MCP6242-E/SN:
b)
MCP6242-E/MS:
c)
MCP6242-E/P:
d)
MCP6242T-E/SN:
a)
MCP6244-E/P:
b)
MCP6244-E/SL:
c)
MCP6244-E/ST:
d)
MCP6244T-E/SL:
e)
MCP6244T-E/ST:
Extended Temp.,
8LD SOIC package.
Extended Temp.,
8LD MSOP package.
Extended Temp.,
8LD PDIP package.
Tape and Reel,
Extended Temp.,
8LD SOIC package.
Extended Temp.,
14LD PDIP package.
Extended Temp.,
14LD SOIC package.
Extended Temp.,
14LD TSSOP
package.
Tape and Reel,
Extended Temp.,
14LD SOIC package.
Tape and Reel,
Extended Temp.,
14LD TSSOP
package.
DS21882D-page 35
MCP6241/1R/1U/2/4
NOTES:
DS21882D-page 36
© 2008 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, PICkit, PICDEM,
PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total
Endurance, 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.
© 2008, 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.
© 2008 Microchip Technology Inc.
DS21882D-page 37
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://support.microchip.com
Web Address:
www.microchip.com
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-4182-8400
Fax: 91-80-4182-8422
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
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Tel: 630-285-0071
Fax: 630-285-0075
Dallas
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Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Farmington Hills, MI
Tel: 248-538-2250
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Kokomo
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Tel: 765-864-8360
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Los Angeles
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Tel: 949-462-9523
Fax: 949-462-9608
Santa Clara
Santa Clara, CA
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Fax: 408-961-6445
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
China - Beijing
Tel: 86-10-8528-2100
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Shanghai
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
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
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
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
01/02/08
DS21882D-page 38
© 2008 Microchip Technology Inc.

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