MCP6234-E/ST Microchip Technology, MCP6234-E/ST Datasheet - Page 11

• Manufacturer Part Number: MCP6234-E/ST
• Description: IC OPAMP 1.8V QUAD 14TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP6234-E/ST

• Slew Rate: 0.15 V/µs
• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 300kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 5000µV
• Current - Supply: 20µA
• Current - Output / Channel: 23mA
• Voltage - Supply, Single/dual (±): 1.8 V ~ 6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Op Amp Type: Rail To Rail
• No. Of Amplifiers: 4
• Bandwidth: 300kHz
• Supply Voltage Range: 1.8V To 6V
• Amplifier Case Style: TSSOP
• No. Of Pins: 14
• Number Of Channels: 4
• Voltage Gain Db: 110 dB
• Common Mode Rejection Ratio (min): 61 dB
• Input Offset Voltage: 5 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

4.0
The MCP6231/1R/1U/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 MCP6231/1R/1U/2/4 ideal for
battery-powered applications.
4.1
4.1.1
The MCP6231/1R/1U/2/4 op amp is designed to
prevent phase reversal when the input pins exceed the
supply voltages.
exceeding the supply voltage without any phase
reversal.
FIGURE 4-1:
Show No Phase Reversal.
4.1.2
The ESD protection on the inputs can be depicted as
shown in
protect the input transistors, and to minimize input bias
current (I
when they try to go more than one diode drop below
V
above V
allow normal operation, and low enough to bypass
quick ESD events within the specified limits.
© 2009 Microchip Technology Inc.
SS
. They also clamp any voltages that go too far
-1.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
DD
APPLICATION INFORMATION
Rail-to-Rail Inputs
B
). The input ESD diodes clamp the inputs
Figure
; their breakdown voltage is high enough to
PHASE REVERSAL
INPUT VOLTAGE AND CURRENT
LIMITS
Figure 4-1
4-2. This structure was chosen to
The MCP6231/1R/1U/2/4
V
Time (1 ms/div)
IN
shows the input voltage
V
OUT
V
G = +2 V/V
DD
= 5.0V
FIGURE 4-2:
Structures.
In order to prevent damage and/or improper operation
of these op amps, the circuit they are in must limit the
currents and voltages at the V
Absolute Maximum Ratings † at the beginning of
Section 1.0 “Electrical Characteristics”).
shows the recommended approach to protecting these
inputs. The internal ESD diodes prevent the input pins
(V
the resistors R
out of the input pins. Diodes D
input pins (V
V
implemented as shown, resistors R
the current through D
FIGURE 4-3:
Inputs.
It is also possible to connect the diodes to the left of
resistors R
diodes D
mechanism. The resistors then serve as in-rush current
limiters; the DC current into the input pins (V
V
DD
IN
IN
V
V
MCP6231/1R/1U/2/4
–) should be very small.
+ and V
, and dump any currents onto V
1
2
V
V
V
IN
DD
SS
+
1
R
R
R
R
1
2
1
and D
Bond
Bond
Bond
Pad
Pad
Pad
IN
D
1
2
>
>
and R
IN
–) from going too far below ground, and
1
1
V
V
+ and V
and R
SS
SS
2
D
2
needs to be limited by some other
– (minimum expected V
– (minimum expected V
2
. In this case, current through the
1
2
Simplified Analog Input ESD
Protecting the Analog
and D
limit the possible current drawn
IN
Stage
Input
–) from going too far above
MCP623X
2 mA
2 mA
2
.
V
R
IN
DD
1
3
+ and V
and D
1
DS21881E-page 11
and R
Bond
Pad
2
IN
prevent the
– pins (see
1
2
DD
2
Figure 4-3
)
)
V
also limit
. When
IN
IN
–
+ and