MCP6421 Datasheet, PDF (1/34 Pages) Microchip Technology – 4.4 μA, 90 kHz Op Amp

MCP6421
4.4 µA, 90 kHz Op Amp
Features:
• Low Quiescent Current:
- 4.4 µA/amplifier (typical)
• Low Input Offset Voltage:
- ±1.0 mV (maximum)
• Enhanced EMI Protection:
- Electromagnetic Interference Rejection Ratio
(EMIRR) at 1.8 GHz: 97 dB
• Supply Voltage Range: 1.8V to 5.5V
• Gain Bandwidth Product: 90 kHz (typical)
• Rail-to-Rail Input/Output
• Slew Rate: 0.05 V/µs (typical)
• Unity Gain Stable
• No Phase Reversal
• Small Packages:
- Singles in SC70-5, SOT-23-5
• Extended Temperature Range:
- -40°C to +125°C
Applications:
• Portable Medical Instrument
• Safety Monitoring
• Battery Powered System
• Remote Sensing
• Supply Current Sensing
• Analog Active Filter
Design Aids:
• SPICE Macro Models
• FilterLab^® Software
• Microchip Advanced Part Selector (MAPS)
• Analog Demonstration and Evaluation Boards
• Application Notes
Description:
The Microchip Technology Inc. MCP6421 family of
operational amplifiers operate with a single supply
voltage as low as 1.8V, while drawing low quiescent
current per amplifier (5.5 µA, maximum). This family
also has low input offset voltage (±1.0 mV, maximum)
and rail-to-rail input and output operation. In addition,
the MCP6421 family is unity gain stable and has a gain
bandwidth product of 90 kHz (typical). This
combination of features supports battery-powered and
portable applications. The MCP6421 family has
enhanced EMI protection to minimize any
electromagnetic interference from external sources,
such as power lines, radio stations, and mobile
communications, etc. This feature makes it well suited
for EMI sensitive applications.
The MCP6421 family is offered in single (MCP6421)
packages. All devices are designed using an advanced
CMOS process and fully specified in extended
temperature range from -40°C to +125°C.
Package Types
MCP6421
SC70-5, SOT-23-5
V_OUT 1
V_SS 2
V_IN+ 3
5 V_DD
4 V_IN–
Typical Application
V_DD
R+¨R R-¨R
V_b
V_a
R-¨R R+¨R
V_DD
R₃
MCP6421 ^100k
-
+
R₁
V_DD
1kŸ
-
V_OUT
V_{DD R2}
1kŸ
-
+ _MCP6421
+
MCP6421
R₅
100k
V_OUT = V_a – V_b  _{1-1--0-0---0k---}^---
Strain Gauge
 2013 Microchip Technology Inc.
DS25165A-page 1