MCP6004-I/ST Microchip Technology, MCP6004-I/ST Datasheet - Page 8

• Manufacturer Part Number: MCP6004-I/ST
• Description: IC OPAMP QUAD 1.8V 14TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP6004-I/ST

• Slew Rate: 0.6 V/µs
• Package / Case: 14-TSSOP
• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 1MHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 4500µV
• Current - Supply: 100µA
• Current - Output / Channel: 23mA
• Voltage - Supply, Single/dual (±): 1.8 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Channels: 4
• Common Mode Rejection Ratio (min): 60 dB
• Input Offset Voltage: 4.5 mV
• Input Bias Current (max): 19 pA
• Operating Supply Voltage: 3 V, 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Shutdown: No
• Supply Voltage (max): 6 V
• Supply Voltage (min): 1.8 V
• Technology: CMOS
• Voltage Gain Db: 112 dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP6001/2/4
4.0
The MCP6001/2/4 family of op amps is manufactured
using Microchip’s state-of-the-art CMOS process and
is specifically designed for low-cost, low-power and
general-purpose applications. The low supply voltage,
low quiescent current and wide bandwidth makes the
MCP6001/2/4 ideal for battery-powered applications.
This device has high phase margin, which makes it
stable for larger capacitive load applications.
4.1
The MCP6001/2/4 op amps are designed to prevent
phase reversal when the input pins exceed the supply
voltages. Figure 4-1 shows the input voltage exceeding
the supply voltage without any phase reversal.
FIGURE 4-1:
Phase Reversal.
The input stage of the MCP6001/2/4 op amps use two
differential input stages in parallel. One operates at a
low common mode input voltage (V
operates at a high V
operates with a V
300 mV below V
measured at V
to ensure proper operation.
Input voltages that exceed the input voltage range
(V
excessive current to flow into or out of the input pins,
while current beyond ±2 mA can cause reliability
problems. Applications that exceed this rating must be
externally limited with a resistor, as shown in Figure 4-2.
DS21733E-page 8
SS
– 0.3V to V
-1
6
5
4
3
2
1
0
0.E+00
APPLICATION INFORMATION
Rail-to-Rail Input
1.E-05
CM
2.E-05
V
= V
CM
SS
DD
OUT
CM
3.E-05
. The input offset voltage is
SS
+ 0.3V at 25°C) can cause
The MCP6001/2/4 Show No
up to 300 mV above V
V
Time (10 µs/div)
. With this topology, the device
IN
– 300 mV and V
4.E-05
5.E-05
6.E-05
CM
7.E-05
), while the other
V
G = +2 V/V
DD
DD
8.E-05
= 5.0V
+ 300 mV
9.E-05
DD
1.E-04
and
FIGURE 4-2:
Resistor (R
4.2
The output voltage range of the MCP6001/2/4 op amps
is V
R
Refer to Figure 2-14 for more information.
4.3
Driving large capacitive loads can cause stability prob-
lems for voltage feedback op amps. As the load capac-
itance 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 band-
width will be generally lower than the bandwidth with no
capacitance load.
FIGURE 4-3:
stabilizes large capacitive loads.
L
V
= 10 k
DD
IN
V
IN
– 25 mV (min.) and V
Rail-to-Rail Output
Capacitive Loads
R
R
IN
IN
is connected to V
IN
–
MCP600X
+
).
------------------------------------------------------------------------------ -
R
V
--------------------------------------------------------------------------- -
Maximum expected V
IN
SS
–
Minimum expected V
Input Current Limiting
Output resistor, R
ISO
 2004 Microchip Technology Inc.
–
+
MCP600X
2 mA
2 mA
in Figure 4-3) improves the
SS
R
DD
+ 25 mV (max.) when
ISO
/2 and V
C
IN
L
–
V
IN
DD
ISO
DD
V
V
= 5.5V.
OUT
OUT