MCP4351-103E/ST

Manufacturer Part NumberMCP4351-103E/ST
DescriptionIC DGTL POT QUAD 10K 20TSSOP
ManufacturerMicrochip Technology
MCP4351-103E/ST datasheet
 


Specifications of MCP4351-103E/ST

Taps257Resistance (ohms)10K
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 / Case20-TSSOP
Resistance In Ohms10KLead Free Status / RoHS StatusLead free / RoHS Compliant
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
Page 71
72
Page 72
73
Page 73
74
Page 74
75
Page 75
76
Page 76
77
Page 77
78
Page 78
79
Page 79
80
Page 80
81
82
83
84
85
86
87
88
Page 79/88

Download datasheet (6Mb)Embed
PrevNext
APPENDIX B:
CHARACTERIZATION
DATA ANALYSIS
Some designers may desire to understand the device
operational characteristics outside of the specified
operating conditions of the device.
Applications where the knowledge of the resistor
network characteristics could be useful include battery
powered devices and applications that experience
brown-out conditions.
In battery applications the application voltage decays
over time until new batteries are installed. As the
voltage decays, the system will continue to operate. At
some voltage level, the application will be below its
specified operating voltage range. This is dependent
on the individual components used in the design. It is
still useful to understand the device characteristics to
expect when this low-voltage range is encountered.
Unlike a microcontroller which can use an external
supervisor device to force the controller into the Reset
state, a digital potentiometer’s resistance characteristic
is not specified. But understanding the operational
characteristics can be important in the design of the
applications circuit for this low-voltage condition.
Other application system scenarios where understand-
ing the low-voltage characteristics of the resistor net-
work could be important is for system brown out
conditions.
For the MCP433X/435X devices, the analog operation
is specified at a minimum of 2.7V. Device testing has
Terminal A connected to the device V
potentiometer configuration only) and Terminal B
connected to V
.
SS
 2010 Microchip Technology Inc.
MCP433X/435X
B.1
Low-Voltage Operation
This
appendix
gives
semiconductor characteristics at lower voltages. This is
important
so
that
characterization graphs of the MCP433X/435X devices
can be better understood.
For this discussion, we will use the 5 k device data.
This data was chosen since the variations of wiper
resistance has much greater implications for devices
with smaller R
resistances.
AB
Figure B-1
shows the worst case R
average R
as a percentage, while
BW
the R
resistance verse wiper code graph. Nonlinear
BW
behavior occurs at approximately wiper code 160. This
is better shown in
resistance changes from a linear slope. This change is
due to the change in the wiper resistance.
2.00%
1.00%
0.00%
-1.00%
-2.00%
-3.00%
-4.00%
-5.00%
-6.00%
-7.00%
0
32
64
(for
DD
FIGURE B-1:
from Average R
BW
and Temperature (V
7000
6000
5000
4000
3000
2000
1000
0
0
32
64
FIGURE B-2:
Temperature (V
DD
an
overview
of
CMOS
the
1.8V
resistor
network
error from the
BW
Figure B-2
shows
Figure
B-2, where the R
BW
-40C
+25C
+85C
+125C
96
128
160
192
224
256
Wiper Code
1.8V Worst Case R
Error
BW
(R
-R
) vs. Wiper Code
BW0
BW3
= 1.8V, I
= 190
A).
µ
DD
W
-40C
+25C
+85C
+125C
96
128
160
192
224
256
Wiper Code
R
vs. Wiper Code And
BW
= 1.8V, I
= 190
A).
µ
W
DS22242A-page 79