MCP6064-E/SL Microchip Technology, MCP6064-E/SL Datasheet - Page 16

• Manufacturer Part Number: MCP6064-E/SL
• Description: IC OPAMP PREC 6.0V 60UA 14-SOIC
• Manufacturer: Microchip Technology

Specifications of MCP6064-E/SL

• Slew Rate: 0.25 V/µs
• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 730kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 150µV
• Current - Supply: 60µA
• Current - Output / Channel: 27mA
• Voltage - Supply, Single/dual (±): 1.8 V ~ 6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Op Amp Type: Precision
• No. Of Amplifiers: 4
• Bandwidth: 730kHz
• Supply Voltage Range: 1.8V To 6V
• Amplifier Case Style: SOIC
• No. Of Pins: 14
• Number Of Channels: 4
• Voltage Gain Db: 115 dB
• Common Mode Rejection Ratio (min): 72 dB
• Input Offset Voltage: 0.15 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

MCP6061/2/4
4.2
The output voltage range of the MCP6061/2/4 op amps
is V
(maximum) when R
and V
more information.
4.3
Driving large capacitive loads can cause stability
problems for voltage feedback op amps. As the load
capacitance increases, the feedback loop’s phase
margin decreases and the closed-loop bandwidth is
reduced. This produces gain peaking in the frequency
response, with overshoot and ringing in the step
response. While a unity-gain buffer (G = +1) is the most
sensitive to capacitive loads, all gains show the same
general behavior.
When driving large capacitive loads with these op
amps (e.g., > 100 pF when G = +1), a small series
resistor at the output (R
feedback loop’s phase margin (stability) by making the
output load resistive at higher frequencies. The
bandwidth will be generally lower than the bandwidth
with no capacitance load.
FIGURE 4-4:
Stabilizes Large Capacitive Loads.
Figure 4-5
different capacitive loads and gains. The x-axis is the
normalized load capacitance (C
circuit's noise gain. For non-inverting gains, G
Signal Gain are equal. For inverting gains, G
1+|Signal Gain| (e.g., -1 V/V gives G
FIGURE 4-5:
for Capacitive Loads.
DS22189B-page 16
V
IN
SS
10000
DD
1000
100
+ 15 mV (minimum) and V
10
Rail-to-Rail Output
Capacitive Loads
1.E-11
= 6.0V. Refer to
1
gives recommended R
–
+
Normalized Load Capacitance; C
MCP606X
1.E-10
L
= 10 kΩ is connected to V
Output Resistor, R
Recommended R
ISO
1.E-09
G
1 V/V
2 V/V
≥ 5 V/V
Figures 2-27
N
in
:
Figure
R
1.E-08
L
ISO
/G
C
N
), where G
N
L
4-4) improves the
ISO
V
R
1.E-07
= +2 V/V).
DD
L
DD
= 10 kΩ
L
and
= 6.0 V
/G
ISO
values for
N
ISO
– 15 mV
(F)
N
1.E-06
2-28
Values
V
and the
N
OUT
is the
DD
N
for
/2
is
After selecting R
resulting frequency response peaking and step
response overshoot. Modify R
response is reasonable. Bench evaluation and
simulations with the MCP6061/2/4 SPICE macro
model are very helpful.
4.4
With this family of operational amplifiers, the power
supply pin (V
bypass capacitor (i.e., 0.01 µF to 0.1 µF) within 2 mm
for good high frequency performance. It can use a bulk
capacitor (i.e., 1 µF or larger) within 100 mm to provide
large, slow currents. This bulk capacitor can be shared
with other analog parts.
4.5
An unused op amp in a quad package (MCP6064)
should be configured as shown in
circuits prevent the output from toggling and causing
crosstalk. Circuit A sets the op amp at its minimum
noise gain. The resistor divider produces any desired
reference voltage within the output voltage range of the
op amp; the op amp buffers that reference voltage.
Circuit B uses the minimum number of components
and operates as a comparator, but it may draw more
current.
FIGURE 4-6:
V
DD
V REF
R
R
¼ MCP6064 (A)
1
2
Supply Bypass
Unused Op Amps
=
DD
V DD
V
DD
for single-supply) should have a local
ISO
×
for your circuit, double-check the
--------------------
R 1
Unused Op Amps.
R 2
© 2010 Microchip Technology Inc.
+
V
R 2
REF
ISO
¼ MCP6064 (B)
’s value until the
Figure
V
4-6. These
DD