MCP4332-503E/ST

Manufacturer Part NumberMCP4332-503E/ST
DescriptionIC DGTL POT QUAD 50K 14TSSOP
ManufacturerMicrochip Technology
MCP4332-503E/ST datasheet
 


Specifications of MCP4332-503E/ST

Taps129Resistance (ohms)50K
Number Of Circuits4Temperature Coefficient150 ppm/°C Typical
Memory TypeVolatileInterfaceSPI Serial
Voltage - Supply1.8 V ~ 5.5 VOperating Temperature-40°C ~ 125°C
Mounting TypeSurface MountPackage / Case14-TSSOP
Resistance In Ohms50KLead Free Status / RoHS StatusLead free / RoHS Compliant
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Page 44/88

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MCP433X/435X
5.2
Wiper
Each tap point (between the R
S
connection point for an analog switch. The opposite
side of the analog switch is connected to a common
signal which is connected to the Terminal W (Wiper)
pin.
A value in the volatile wiper register selects which
analog switch to close, connecting the W terminal to
the selected node of the resistor ladder.
The wiper can connect directly to Terminal B or to
Terminal A. A zero scale connection, connects the
Terminal W (wiper) to Terminal B (wiper setting of
000h). A full scale connection, connects the Terminal W
(wiper) to Terminal A (wiper setting of 100h or 80h). In
these configurations the only resistance between the
Terminal W and the other Terminal (A or B) is that of the
analog switches.
A wiper setting value greater than full scale (wiper
setting of 100h for 8-bit device or 80h for 7-bit devices)
will also be a full scale setting (Terminal W (wiper) con-
nected to Terminal A).
Table 5-1
illustrates the full wiper
setting map.
Equation 5-2
illustrates the calculation used to
determine the resistance between the wiper and
terminal B.
EQUATION 5-2:
R
CALCULATION
WB
R
N
AB
R
=
------------- -
+
R
8-bit Device
WB
W
256
N = 0 to 256 (decimal)
R
N
AB
7-bit Device
R
=
------------- -
+
R
WB
W
128
N = 0 to 128 (decimal)
DS22242A-page 44
TABLE 5-1:
resistors) is a
Wiper Setting
7-bit
8-bit
3FFh-
3FFh-
081h
101h
080h
100h
07Fh-
0FFh-
041h
081h
040h
080h
03Fh-
07Fh-
001h
001h
000h
000h
VOLATILE WIPER VALUE VS.
WIPER POSITION MAP
Properties
Reserved (Full Scale (W = A)),
Increment and Decrement
commands ignored
Full Scale (W = A),
Increment commands ignored
W = N
W = N (Mid Scale)
W = N
Zero Scale (W = B)
Decrement command ignored
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