MCP6S2X N/A, MCP6S2X Datasheet - Page 15

• Manufacturer Part Number: MCP6S2X
• Description: MCP6S21-2-6-8
• Manufacturer: N/A

3.0
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
3.1
The output pin (V
source. The selected gain (G), selected input (CH0-
CH7) and voltage at V
3.2
The inputs CH0 through CH7 connect to the signal
sources. They are high-impedance CMOS inputs with
low bias currents. The internal MUX selects which one
is amplified to the output.
3.3
The V
V
The voltage at this pin shifts the output voltage.
DD
2003 Microchip Technology Inc.
MCP6S21
(the MCP6S22 has V
—
—
—
—
—
—
—
—
REF
1
2
3
4
5
6
7
8
PIN DESCRIPTIONS
Analog Output
Analog Inputs (CH0 thru CH7)
External Reference Voltage (V
pin should be at a voltage between V
MCP6S22
PIN FUNCTION TABLE
—
—
—
—
—
—
—
—
OUT
1
2
3
4
5
6
7
8
REF
) is a low-impedance voltage
determine its value.
REF
MCP6S26
tied internally to V
10
12
13
14
—
—
11
1
2
3
4
5
6
7
8
9
MCP6S28
10
12
13
14
15
16
11
1
2
3
4
5
6
7
8
9
SS
REF
and
SS
)
).
Symbol
V
V
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
SCK
V
V
CS
SO
OUT
SI
REF
DD
SS
3.4
The positive power supply pin (V
higher than the negative power supply pin (V
normal operation, the other pins are between V
V
Typically, these parts are used in a single (positive)
supply configuration. In this case, V
ground and V
need a local bypass capacitor (0.1 µF) at the V
It can share a bulk capacitor with nearby analog parts
(typically 2.2 µF to 10 µF within 4 inches (100 mm) of
the V
3.5
The SPI interface inputs are: Chip Select (CS), Serial
Input (SI) and Serial Clock (SCK). These are Schmitt-
triggered, CMOS logic inputs.
3.6
The MCP6S26 and MCP6S28 devices have a SPI
interface serial output (SO) pin. This is a CMOS push-
pull output and does not ever go High-Z. Once the
device is deselected (CS goes high), SO is forced low.
This feature supports daisy chaining, as explained in
Section 5.3, “Daisy Chain Configuration”.
DD
.
DD
pin.
Analog Output
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
External Reference Pin
Negative Power Supply
SPI Chip Select
SPI Serial Data Input
SPI Serial Data Output
SPI Clock Input
Positive Power Supply
Power Supply (V
Digital Inputs
Digital Output
DD
MCP6S21/2/6/8
is connected to the supply. V
Description
SS
DD
and V
SS
DS21117A-page 15
) is 2.5V to 5.5V
is connected to
DD
)
SS
DD
SS
DD
). For
and
pin.
will