MCP635T-E/UN Microchip Technology, MCP635T-E/UN Datasheet - Page 25

• Manufacturer Part Number: MCP635T-E/UN
• Description: Dual, 24MHz OP W /CS, E Temp 10 MSOP 3x3mm T/R
• Manufacturer: Microchip Technology

Specifications of MCP635T-E/UN

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 10 V/µs
• Gain Bandwidth Product: 24MHz
• Current - Input Bias: 4pA
• Voltage - Input Offset: 1800µV
• Current - Supply: 2.5mA
• Current - Output / Channel: 70mA
• Voltage - Supply, Single/dual (±): 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Number Of Channels: 2
• Voltage Gain Db: 124 dB
• Common Mode Rejection Ratio (min): 63 dB
• Input Offset Voltage: 8 mV
• Operating Supply Voltage: 3 V, 5 V
• Maximum Operating Temperature: + 125 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

Sometimes, it helps to place guard traces next to victim
traces. They should be on both sides of the victim
trace, and as close as possible. Connect guard traces
to ground plane at both ends, and in the middle for long
traces.
Use coax cables, or low inductance wiring, to route
signal and power to and from the PCB. Mutual and self
inductance of power wires is often a cause of crosstalk
and unusual behavior.
4.7
4.7.1
Figure 4-10
(1 + R
current makes it possible to drive significant loads. The
calibrated input offset voltage supports accurate
response at high gains. R
to R
offset.
FIGURE 4-10:
4.7.2
Figure 4-11
the MCP63X op amp, in a photo detector circuit. The
photo detector is a capacitive current source.
R
C
bandwidth
capacitance (e.g., 0.2 pF for a 0805 SMD) acts in
parallel with C
FIGURE 4-11:
for an Optical Detector.
© 2009 Microchip Technology Inc.
F
F
provides enough gain to produce 10 mV at V
stabilizes the gain and limits the transimpedance
100 nA
1
V
||R
DD
2
V
/R
2
IN
/2
, in order to minimize the bias current induced
Typical Applications
I
1
D
). The MCP631/2/3/5 op amp’s short circuit
POWER DRIVER WITH HIGH GAIN
OPTICAL DETECTOR AMPLIFIER
shows a transimpedance amplifier, using
shows a power driver with high gain
to
F
R
R
.
Detector
1
3
Photo
about
C
30pF
D
Power Driver.
Transimpedance Amplifier
R
2
3
1.1 MHz.
should be small, and equal
MCP63X
V
DD
/2
100 kΩ
1.5 pF
C
R
MCP63X
F
F
R
F
’s
R
L
V
parasitic
V
OUT
OUT
OUT
.
4.7.3
Figure 4-12
a H-bridge driver. The load could be a speaker or a DC
motor.
FIGURE 4-12:
This circuit automatically makes the noise gains (G
equal, when the gains are set properly, so that the
frequency responses match well (in magnitude and in
phase).
R
G
EQUATION 4-7:
Equation 4-8
differential mode output voltages.
EQUATION 4-8:
GB
DM
so that both op amps have the same DC gains;
needs to be selected first.
V
DD
Equation 4-7
V
/2
IN
H-BRIDGE DRIVER
V
-------------------------- -
V
shows the MCP632 dual op amp used as
OT
G
OT
R
R
gives the resulting common mode and
DM
GT
GB
+
2
–
V
V
≡
=
MCP631/2/3/5
=
R
R
OB
OB
R
--------------------------------
V
GB
GT
-------------------------------- -
(
F
shows how to calculate R
V
------------------ -
G
IN
G
H-Bridge Driver.
OT
DM
=
=
R
DM
–
F
G
–
V
V
---------- -
R
⁄
DD
DD
⁄
2
DM
V
2
F
2
OB
) 1
⎛
⎝
⁄
–
R
R
2
V
½ MCP632
½ MCP632
F
F
IN
≥
1 V/V
–
DS22197A-page 25
V
---------- -
DD
2
⎞
⎠
R
L
V
V
OT
OB
GT
and
N
)