Document
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
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.
Applications
• • • • • • • Noise Cancellation Headphones Cellular Phones Analog Filters Sensor Conditioning Portable Instrumentation Medical Instrumentation Battery Powered Systems
Package Types
MCP6286 SOT-23-5 VOUT 1 VSS 2 VIN+ 3 5 VDD 4 VIN–
Design Aids
• SPICE Macro Models • FilterLab® Software • Mindi™ Circuit Designer & Simulator www.DataSheet4U.com • MAPS (Microchip Advanced Part Selector) • Analog Demonstration and Evaluation Boards • Application Notes
Typical Application
C1 47 nF R2 R1 382 kΩ 641 kΩ VIN C2 22 nF
+
MCP6286 VOUT
–
G = +1 V/V
fP = 10 Hz
Second-Order, Low-Pass Butterworth Filter
© 2009 Microchip Technology Inc.
DS22196A-page 1
MCP6286
NOTES:
www.DataSheet4U.com
DS22196A-page 2
© 2009 Microchip Technology Inc.
MCP6286
1.0
1.1
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
† 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”
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
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 Input Offset Input Offset Voltage Input Offset Drift with Temperature Power Supply Rejection Ratio Input Bias Current and Impedance Input Bias Current IB — — — Input Offset Current Common Mode Input Impedance Differential Input Impedance Common Mode
www.DataSheet4U.com Common Mode Input Voltage
Sym VOS ΔVOS/ΔTA PSRR
Min -1.5 — 80
Typ — ±1 100 ±1 50 1500 ±1 1013||20 1013||20 — 95 100
Max +1.5 — — — 150 3000 — — — VDD-1.2 — —
Units mV
Conditions
µV/°C TA= -40°C to +125°C dB pA pA pA pA Ω||pF Ω||pF V dB dB Note 1 VCM = -0.3V to 1.0V, VDD = 2.2V VCM = -0.3V to 4.3V, VDD = 5.5V 0.2V < VOUT <(VDD-0.2V) TA = +85°C TA = +125°C
IOS ZCM ZDIFF VCMR CMRR
— — — VSS−0.3 76 80
Range Common Mode Rejection Ratio
Open-Loop Gain DC Open-Loop Gain (Large Signal) Output Maximum Output Voltage Swing VOL, VOH VSS+15 VSS+75 Output Short-Circuit Current Note 1: ISC — — — ±20 VDD–15 VDD–75 — mV mV mA 0.5V Input overdrive 0.5V Input overdrive RL = 2 kΩ AOL 100 120 — dB
Figure 2-12 shows how VCMR changes across temperature.
© 2009 Microchip Technology Inc.
DS22196A-page 3
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 Power Supply Supply Voltage Quiescent Current per Amplifier Note 1: VDD IQ 2.2 300 320 — 520 540 5.5 700 720 V µA µA IO = 0, VDD = 2.2V IO = 0, VDD = 5.5V Sym Min Typ Max Units Conditions
Figure 2-12 shows how VCMR changes across temperature.
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 Fig.