MCP6281 datasheet(11/36 Pages) MICROCHIP

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DS21811E-page 11

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

TABLE 3-2:

PIN FUNCTION TABLE FOR DUAL AND QUAD OP AMPS

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 VOUTA/VINB+ 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 VOUTA/VINB+ 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 (VDD) is 2.2V to 6.0V higher

than the negative power supply (VSS). For normal

operation, the other pins are between VSS and VDD.

Typically, these parts are used in a single (positive)

supply configuration. In this case, VSS is connected to

ground and VDD is connected to the supply. VDD will

need bypass capacitors.

MCP6281

MCP6281R

MCP6283

Symbol

Description

PDIP, SOIC,

MSOP

SOT-23-5

PDIP, SOIC,

MSOP

SOT-23-6

VOUT

Analog Output

VIN–

Inverting Input

VIN+

Non-inverting Input

VDD

Positive Power Supply

VSS

Negative Power Supply

——

—

Chip Select

1,5,8

—

1,5

—

No Internal Connection

MCP6282

MCP6284

MCP6285

Symbol

Description

PDIP, SOIC, MSOP

PDIP, SOIC, TSSOP

PDIP, SOIC, MSOP

—

VOUTA

Analog Output (op amp A)

VINA–

Inverting Input (op amp A)

VINA+

Non-inverting Input (op amp A)

VDD

Positive Power Supply

—

VINB+

Non-inverting Input (op amp B)

VINB–

Inverting Input (op amp B)

VOUTB

Analog Output (op amp B)

—8—

VOUTC Analog Output (op amp C)

—9—

VINC–

Inverting Input (op amp C)

—10—

VINC+

Non-inverting Input (op amp C)

411

VSS

Negative Power Supply

—12—

VIND+

Non-inverting Input (op amp D)

—13—

VIND–

Inverting Input (op amp D)

—14—

VOUTD Analog Output (op amp D)

——

VOUTA/

VINB+

Analog Output (op amp A)/Non-

inverting Input (op amp B)

——

Chip Select

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