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MCP6286
Low Noise, Low Power Op Amp
Features
• Low Noise: 5.4 nV/Hz (typical)
• Low Quiescent Current: 520 µA (typical)
• Rail-to-Rail Output
• Wide Supply Voltage Range: 2.2V to 5.5V
• Gain Bandwidth Product: 3.5 MHz (typical)
• Unity Gain Stable
• Extended Temperature Range: -40°C to +125°C
• No Phase Reversal
• Small Package
Applications
• Noise Cancellation Headphones
• Cellular Phones
• Analog Filters
• Sensor Conditioning
• Portable Instrumentation
• Medical Instrumentation
• Battery Powered Systems
Design Aids
• SPICE Macro Models
• FilterLab® Software
www.DataSheet4MU.icnodmiCircuit Designer & Simulator
• MAPS (Microchip Advanced Part Selector)
• Analog Demonstration and Evaluation Boards
• Application Notes
Typical Application
C1
47 nF
R1 R2
382 kΩ 641 kΩ
VIN
C2
22 nF
+
MCP6286
VOUT
Description
The Microchip Technology Inc. MCP6286 operational
amplifier (op amp) has low noise (5.4 nV/Hz, typical),
low power (520 µA, typical) and rail-to-rail output
operation. It is unity gain stable and has a gain
bandwidth product of 3.5 MHz (typical). This device
operates with a single supply voltage as low as 2.2V,
while drawing low quiescent current. These features
make the product well suited for single-supply, low
noise, battery-powered applications.
The MCP6286 op amp is offered in a space saving
SOT-23-5 package. It is designed with Microchip’s
advanced CMOS process and available in the
extended temperature range, with a power supply
range of 2.2V to 5.5V.
Package Types
MCP6286
SOT-23-5
VOUT 1
VSS 2
VIN+ 3
5 VDD
4 VIN–
fP = 10 Hz G = +1 V/V
Second-Order, Low-Pass Butterworth Filter
© 2009 Microchip Technology Inc.
DS22196A-page 1

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MCP6286
NOTES:
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DS22196A-page 2
© 2009 Microchip Technology Inc.

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MCP6286
1.0 ELECTRICAL CHARACTERISTICS
1.1 Absolute Maximum Ratings †
VDD – VSS ........................................................................7.0V
Current at Input Pins .....................................................±2 mA
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; 400V
† 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.
†† See 4.1.2 “Input Voltage And Current Limits”
DC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, VDD = +2.2V to +5.5V, VSS= GND, TA= +25°C, VCM = VDD/3,
VOUT VDD/2, VL = VDD/2 and RL = 10 kΩ to VL. (Refer to Figure 1-1).
Parameters
Sym
Min Typ Max Units
Conditions
Input Offset
Input Offset Voltage
VOS -1.5 — +1.5 mV
Input Offset Drift with Temperature ΔVOS/ΔTA
±1
— µV/°C TA= -40°C to +125°C
Power Supply Rejection Ratio
PSRR 80 100 — dB
Input Bias Current and Impedance
Input Bias Current
Input Offset Current
Common Mode Input Impedance
Differential Input Impedance
Common Mode
www.DataSheeCt4oUm.common Mode Input Voltage
Range
IB
IOS
ZCM
ZDIFF
VCMR
— ±1 — pA
— 50 150 pA TA = +85°C
1500
3000
pA TA = +125°C
— ±1 — pA
— 1013||20 — Ω||pF
— 1013||20 — Ω||pF
VSS0.3 — VDD-1.2 V Note 1
Common Mode Rejection Ratio
Open-Loop Gain
CMRR
76
95
80 100
— dB VCM = -0.3V to 1.0V,
VDD = 2.2V
— dB VCM = -0.3V to 4.3V,
VDD = 5.5V
DC Open-Loop Gain
(Large Signal)
Output
AOL 100 120 — dB 0.2V < VOUT <(VDD-0.2V)
Maximum Output Voltage Swing VOL, VOH VSS+15 — VDD–15
VSS+75 — VDD–75
Output Short-Circuit Current
ISC — ±20
Note 1: Figure 2-12 shows how VCMR changes across temperature.
mV 0.5V Input overdrive
mV 0.5V Input overdrive
RL = 2 kΩ
mA
© 2009 Microchip Technology Inc.
DS22196A-page 3

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MCP6286
DC ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise indicated, VDD = +2.2V to +5.5V, VSS= GND, TA= +25°C, VCM = VDD/3,
VOUT VDD/2, VL = VDD/2 and RL = 10 kΩ to VL. (Refer to Figure 1-1).
Parameters
Sym
Min Typ Max Units
Conditions
Power Supply
Supply Voltage
VDD 2.2 —
Quiescent Current per Amplifier
IQ 300 520
320 540
Note 1: Figure 2-12 shows how VCMR changes across temperature.
5.5
700
720
V
µA IO = 0, VDD = 2.2V
µA IO = 0, VDD = 5.5V
AC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VDD = +2.2 to +5.5V, VSS = GND, VCM = VDD/3,
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 — 3.5 —
MHz
Phase Margin
PM — 60 —
° G = +1 V/V
Slew Rate
Noise
SR — 2 — V/µs
Input Noise Voltage
Input Noise Voltage Density
Eni — 1.0 — µVP-P f = 0.1 Hz to 10 Hz
eni — 22 — nV/Hz f = 10 Hz
— 5.4 — nV/Hz f = 10 kHz
Input Noise Current Density
ini — 0.6 — fA/Hz f = 1 kHz
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, VDD = +2.2V to +5.5V and VSS = GND.
Parameters
Sym Min Typ Max Units
Conditions
Temperature Ranges
Operating Temperature Range
www.DataSShtoereat4gUe.cToemmperature Range
Thermal Package Resistances
TA -40 — +125 °C Note 1
TA -65 — +150 °C
Thermal Resistance, 5L-SOT-23
θJA — 256 — °C/W
Note 1: The internal junction temperature (TJ) must not exceed the absolute maximum specification of +150°C.
DS22196A-page 4
© 2009 Microchip Technology Inc.

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1.2 Test Circuits
The circuit used for most DC and AC tests is shown in
Figure 1-1. It independently sets VCM and VOUT; see
Equation 1-1. The circuit’s common mode voltage is
(VP + VM)/2, not VCM. VOST includes VOS plus the
effects of temperature, CMRR, PSRR and AOL.
EQUATION 1-1:
GDM = RF RG
GN = 1 + GDM
VCM = VP(1 – 1 GN) + VREF(1 GN)
VOST = VIN– VIN+
VOUT = VREF + (VP VM)GDM + VOSTGN
Where:
GDM = Differential Mode Gain
GN = Noise Gain
VCM = Op Amp’s Common Mode
Input Voltage
VOST = Op Amp’s Total Input Offset
Voltage
(V/V)
(V/V)
(V)
(mV)
MCP6286
CF
6.8 pF
RG
100 kΩ
VP
VIN+
RF
100 kΩ
MCP6286
VIN–
VM
RG
100 kΩ
RF
100 kΩ
VREF = VDD/2
VDD
CB1
100 nF
CB2
1 µF
RL
10 kΩ
VOUT
CL
60 pF
CF
6.8 pF
VL
FIGURE 1-1:
AC and DC Test Circuit for
Most Specifications.
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© 2009 Microchip Technology Inc.
DS22196A-page 5