MCP6N11-005E Datasheet, PDF (1/50 Pages) Microchip Technology – 500 kHz, 800 μA Instrumentation Amplifier

MCP6N11
500 kHz, 800 µA Instrumentation Amplifier
Features
• Rail-to-Rail Input and Output
• Gain Set by 2 External Resistors
• Minimum Gain (G_MIN) Options:
1, 2, 5, 10 or 100 V/V
• Common Mode Rejection Ratio (CMRR): 115 dB
(typical, G_MIN = 100)
• Power Supply Rejection Ratio (PSRR): 112 dB
(typical, G_MIN = 100)
• Bandwidth: 500 kHz (typical, Gain = G_MIN)
• Supply Current: 800 μA/channel (typical)
• Single Channel
• Enable/V_OS Calibration pin: (EN/CAL)
• Power Supply: 1.8V to 5.5V
• Extended Temperature Range: -40°C to +125°C
Typical Applications
• High Side Current Sensor
• Wheatstone Bridge Sensors
• Difference Amplifier with Level Shifting
• Power Control Loops
Design Aids
• Microchip Advanced Part Selector (MAPS)
• Demonstration Board
• Application Notes
Block Diagram
V_OUT
R_F
R_G
V_REF
V_IP
V_IM
V_{OUT RM4}
I₄
V_FG
V_DD V_SS
V_REF
V_IP
V_IM
G_M2
G_M1
Σ
I₂
I₁
I₃
G_M3
V_TR
POR
Low Power
V_OS Calibration
EN/CAL
Description
Microchip Technology Inc. offers the single MCP6N11
instrumentation amplifier (INA) with Enable/V_OS Cali-
bration pin (EN/CAL) and several minimum gain
options. It is optimized for single-supply operation with
rail-to-rail input (no common mode crossover distor-
tion) and output performance.
Two external resistors set the gain, minimizing gain
error and drift-over temperature. The reference voltage
(V_REF) shifts the output voltage (V_OUT).
The supply voltage range (1.8V to 5.5V) is low enough
to support many portable applications. All devices are
fully specified from -40°C to +125°C.
These parts have five minimum gain options (1, 2, 5, 10
and 100 V/V). This allows the user to optimize the input
offset voltage and input noise for different applications.
Typical Application Circuit
V_BAT
V_DD
10 Ω
I_DD
+1.8V
to
U₁
+5.5V
MCP6N11
V_OUT
R_F
V_FG 200 kΩ
R_G
10 kΩ
V_REF
Package Types
MCP6N11
SOIC
MCP6N11
2×3 TDFN *
V_FG 1
V_IM 2
V_IP 3
V_SS 4
8 EN/CAL V_FG 1
8 EN/CAL
7 V_DD
6 V_OUT
5 V_REF
V_IM 2 _EP 7 V_DD
V_IP 3
9
6 V_OUT
V_SS 4
5 V_REF
* Includes Exposed Thermal Pad (EP); see Table 3-1.
© 2011 Microchip Technology Inc.
DS25073A-page 1