MCP608T-I/ST Microchip Technology, MCP608T-I/ST Datasheet - Page 19

• Manufacturer Part Number: MCP608T-I/ST
• Description: IC OPAMP 2.5V R-R W/CS 8TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP608T-I/ST

• Slew Rate: 0.08 V/µs
• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 155kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 250µV
• Current - Supply: 18.7µA
• Current - Output / Channel: 17mA
• Voltage - Supply, Single/dual (±): 2.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP
• Op Amp Type: Low Power
• No. Of Amplifiers: 1
• Bandwidth: 155kHz
• Supply Voltage Range: 2.5V To 5.5V
• Amplifier Case Style: TSSOP
• No. Of Pins: 8
• Number Of Channels: 1
• Voltage Gain Db: 121 dB
• Common Mode Rejection Ratio (min): 75 dB
• Input Offset Voltage: 0.25 mV
• Operating Supply Voltage: 3 V, 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details

4.8.4
A classic, three op amp instrumentation amplifier is
illustrated in
provide differential signal gain and a common mode
gain of +1. The output op amp is a difference amplifier,
which converts its input signal from differential to a sin-
gle ended output; it rejects common mode signals at its
input. The gain of this circuit is simply adjusted with one
resistor (R
referenced to mid-supply (V
applications.
FIGURE 4-12:
Instrumentation Amplifier.
© 2009 Microchip Technology Inc.
V
V
2
1
V OUT
G
THREE OP AMP
INSTRUMENTATION AMPLIFIER
). The reference voltage (V
R
Figure
=
G
R
R
MCP607
(
2
2
MCP607
V 1 V 2
½
–
½
4-12. The two input op amps
Three Op Amp
) 1
R
R
⎛
⎜
⎝
3
3
+
2R
---------
R G
DD
2
⎞ R
⎟
⎠
/2) in single-supply
R
R
⎛
⎜
⎝
----- -
R
MCP606
4
4
4
3
⎞
⎟
⎠
+
REF
V REF
) is typically
V
V
OUT
REF
4.8.5
In
provide a high gain to the input signal (V
MCP606’s low offset voltage makes this an accurate
circuit.
The MCP601 is configured as a unity-gain buffer. It
isolates the MCP606’s output from the load, increasing
the high-gain stage’s precision. Since the MCP601 has
a higher output current, with the two amplifiers being
housed in separate packages, there is minimal change
in the MCP606’s offset voltage due to loading effect.
FIGURE 4-13:
Load Isolation.
Figure
V
IN
4-13, the MCP606 op amps, R
PRECISION GAIN WITH GOOD
LOAD ISOLATION
R
1
V OUT
MCP606/7/8/9
R
MCP606
=
Precision Gain with Good
2
V
IN
(
1
+
R
2
⁄
R
MCP601
1
DS11177F-page 19
)
1
V
IN
OUT
and R
). The
2