MCP6281_08 Datasheet, PDF (11/36 Pages) Microchip Technology – 450 μA, 5 MHz Rail-to-Rail Op Amp

MCP6281/1R/2/3/4/5
3.0 PIN DESCRIPTIONS
Descriptions of the pins are listed in Table 3-1 (single op amps) and Table 3-2 (dual and quad op amps).
TABLE 3-1: PIN FUNCTION TABLE FOR SINGLE OP AMPS
MCP6281
MCP6281R
MCP6283
PDIP, SOIC,
MSOP
SOT-23-5
SOT-23-5
PDIP, SOIC,
MSOP
Symbol
SOT-23-6
Description
6
1
1
6
2
4
4
2
3
3
3
3
7
5
2
7
4
2
5
4
—
—
—
8
1
V_OUT Analog Output
4
V_IN– Inverting Input
3
V_IN+ Non-inverting Input
6
V_DD Positive Power Supply
2
V_SS Negative Power Supply
5
CS Chip Select
1,5,8
—
—
1,5
—
NC No Internal Connection
TABLE 3-2: PIN FUNCTION TABLE FOR DUAL AND QUAD OP AMPS
MCP6282
MCP6284
PDIP, SOIC, MSOP
1
2
3
8
5
6
7
—
—
—
4
—
—
—
—
PDIP, SOIC, TSSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
—
—
—
MCP6285
PDIP, SOIC, MSOP
—
2
3
8
—
6
7
—
—
—
4
—
—
—
1
5
Symbol
Description
V_OUTA
V_INA–
V_INA+
V_DD
V_INB+
V_INB–
V_OUTB
V_OUTC
V_INC–
V_INC+
V_SS
V_IND+
V_IND–
V_OUTD
V_OUTA/
V_INB+
CS
Analog Output (op amp A)
Inverting Input (op amp A)
Non-inverting Input (op amp A)
Positive Power Supply
Non-inverting Input (op amp B)
Inverting Input (op amp B)
Analog Output (op amp B)
Analog Output (op amp C)
Inverting Input (op amp C)
Non-inverting Input (op amp C)
Negative Power Supply
Non-inverting Input (op amp D)
Inverting Input (op amp D)
Analog Output (op amp D)
Analog Output (op amp A)/Non-
inverting Input (op amp B)
Chip Select
3.1 Analog Outputs
The output pins are low-impedance voltage sources.
3.2 Analog Inputs
The non-inverting and inverting inputs are high-
impedance CMOS inputs with low bias currents.
3.3 MCP6285’s V_OUTA/V_INB+ Pin
For the MCP6285 only, the output of op amp A is
connected directly to the non-inverting input of
op amp B; this is the V_OUTA/V_INB+ pin. This connection
makes it possible to provide a Chip Select pin for duals
in 8-pin packages.
3.4 Chip Select Digital Input (CS)
This is a CMOS, Schmitt-triggered input that places the
part into a low-power mode of operation.
3.5 Power Supply Pins
The positive power supply (V_DD) is 2.2V to 6.0V higher
than the negative power supply (V_SS). For normal
operation, the other pins are between V_SS and V_DD.
Typically, these parts are used in a single (positive)
supply configuration. In this case, V_SS is connected to
ground and V_DD is connected to the supply. V_DD will
need bypass capacitors.
© 2008 Microchip Technology Inc.
DS21811E-page 11