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PDF ( 数据手册 , 数据表 ) MCP4162

零件编号 MCP4162
描述 7/8-Bit Single/Dual SPI Digital POT
制造商 Microchip Technology
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MCP4162 数据手册, 描述, 功能
MCP413X/415X/423X/425X
7/8-Bit Single/Dual SPI Digital POT with Volatile Memory
Features
• Single or Dual Resistor Network options
• Potentiometer or Rheostat configuration options
• Resistor Network Resolution
- 7-bit: 128 Resistors (129 Steps)
- 8-bit: 256 Resistors (257 Steps)
• RAB Resistances options of:
- 5 kΩ
- 10 kΩ
- 50 kΩ
- 100 kΩ
• Zero Scale to Full Scale Wiper operation
• Low Wiper Resistance: 75Ω (typ.)
• Low Tempco:
- Absolute (Rheostat): 50 ppm typical
(0°C to 70°C)
- Ratiometric (Potentiometer): 15 ppm typical
• SPI Serial Interface (10 MHz, modes 0,0 & 1,1)
- High-Speed Read/Writes to wiper registers
- SDI/SDO multiplexing (MCP41X1 only)
• Resistor Network Terminal Disconnect Feature
via:
- Shutdown pin (SHDN)
- Terminal Control (TCON) Register
• Brown-out reset protection (1.5V typical)
• Serial Interface Inactive current (2.5 uA typ.)
• High-Voltage Tolerant Digital Inputs: Up to 12.5V
• Supports Split Rail Applications
• Internal weak pull-up on all digital inputs
• Wide Operating Voltage:
- 2.7V to 5.5V - Device Characteristics
Specified
- 1.8V to 5.5V - Device Operation
• Wide Bandwidth (-3 dB) Operation:
- 2 MHz (typ.) for 5.0 kΩ device
• Extended temperature range (-40°C to +125°C)
Description
The MCP41XX and MCP42XX devices offer a wide
range of product offerings using an SPI interface. This
family of devices support 7-bit and 8-bit resistor
networks, and Potentiometer and Rheostat pinouts.
Package Types
MCP41X1
Single Potentiometer
MCP41X2
Single Rheostat
CS
SCK
SDI/SDO
VSS
1
2
3
4
8
7
VDD
P0B
6 P0W
5 P0A
PDIP, SOIC, MSOP,
3x3 DFN
CS
SCK
SDI
VSS
1
2
3
4
8
7
VDD
SDO
6 P0B
5 P0W
PDIP, SOIC, MSOP,
3x3 DFN
MCP42X1 Dual Potentiometers
CS
SCK
SDI
VSS
P1B
P1W
P1A
1
2
3
4
5
6
7
14 VDD
13 SDO
12 SHDN
11 NC
10 P0B
9 P0W
8 P0A
PDIP, SOIC, TSSOP
SCK
SDI
VSS
VSS
116 15 14 1312
2 11
3 10
49
5678
NC
NC
P0B
P0W
4x4 QFN
MCP42X2 Dual Rheostat
CS
SCK
SDI
VSS
P1B
1
2
3
4
5
10
9
VDD
SDO
8 P0B
7 P0W
6 P1W
MSOP, DFN
© 2007 Microchip Technology Inc.
DS22060A-page 1







MCP4162 pdf, 数据表
MCP413X/415X/423X/425X
AC/DC CHARACTERISTICS (CONTINUED)
DC Characteristics
Parameters
Sym
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
–40°C TA +125°C (extended)
All parameters apply across the specified operating ranges unless noted.
VDD = +2.7V to 5.5V, 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ devices.
Typical specifications represent values for VDD = 5.5V, TA = +25°C.
Min Typ Max Units
Conditions
Rheostat
Differential
Non-linearity
MCP41X1
(Note 4, Note 8)
MCP4XX2
devices only
(Note 4)
R-DNL
-0.5
-1.0
-0.375
-0.75
-0.5
-1.0
±0.25 +0.5
+0.5 +1.0
Section 2.0
±0.25 +0.375
+0.5 +0.75
Section 2.0
±0.25 +0.5
+0.25 +1.0
LSb 5 kΩ 8-bit 5.5V, IW = 900 µA
LSb 3.0V (Note 7)
1.8V
LSb 7-bit 5.5V, IW = 900 µA
LSb 3.0V (Note 7)
1.8V
LSb 10 kΩ 8-bit 5.5V, IW = 450 µA
LSb 3.0V (Note 7)
Section 2.0
1.8V
-0.375
-0.75
±0.25 +0.375
+0.5 +0.75
LSb
LSb
7-bit 5.5V, IW = 450 µA
3.0V (Note 7)
Section 2.0
1.8V
-0.5 ±0.25 +0.5 LSb 50 kΩ 8-bit 5.5V, IW = 90 µA
-0.5 ±0.25 +0.5 LSb
3.0V (Note 7)
Section 2.0
1.8V
-0.375
-0.375
±0.25 +0.375
±0.25 +0.375
LSb
LSb
7-bit 5.5V, IW = 90 µA
3.0V (Note 7)
Section 2.0
1.8V
-0.5 ±0.25 +0.5 LSb 100 kΩ 8-bit 5.5V, IW = 45 µA
-0.5 ±0.25 +0.5 LSb
3.0V (Note 7)
Section 2.0
1.8V
-0.375
-0.375
±0.25 +0.375
±0.25 +0.375
LSb
LSb
7-bit 5.5V, IW = 45 µA
3.0V (Note 7)
1.8V
Capacitance (PA)
CAW
— 75 — pF f =1 MHz, Code = Full-Scale
Capacitance (Pw)
CW
— 120 — pF f =1 MHz, Code = Full-Scale
Capacitance (PB)
CBW
— 75 — pF f =1 MHz, Code = Full-Scale
Note 1: Resistance is defined as the resistance between terminal A to terminal B.
2: INL and DNL are measured at VW with VA = VDD and VB = VSS.
3: MCP4XX1 only.
4: MCP4XX2 only, includes VWZSE and VWFSE.
5: Resistor terminals A, W and B’s polarity with respect to each other is not restricted.
6: This specification by design.
7: Non-linearity is affected by wiper resistance (RW), which changes significantly over voltage and
temperature.
8: The MCP4XX1 is externally connected to match the configurations of the MCP41X2 and MCP42X2, and
then tested.
9: POR/BOR is not rate dependent.
10: Supply current is independent of current through the resistor network.
DS22060A-page 8
© 2007 Microchip Technology Inc.







MCP4162 equivalent, schematic
MCP413X/415X/423X/425X
Note: Unless otherwise indicated, TA = +25°C, VDD = 5V, VSS = 0V.
300
260
220
180
140
100
60
20
0
-40C Rw
-40C INL
-40C DNL
DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
INL
125C Rw
125C INL
125C DNL
0.3
0.2
0.1
0
-40°C 25°C
RW
125°C
85°C
-0.1
-0.2
-0.3
32 64 96 128 160 192 224 256
Wiper Setting (decimal)
FIGURE 2-5:
5 kΩ Pot Mode – RW (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (VDD = 5.5V).
300
260
-40C Rw
-40C INL
-40C DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
125C Rw
125C INL
125C DNL
6
220
INL
4
180
140
100
60
-40°C
125°C 85°C 25°C
20
RW
DNL
2
0
-2
0 32 64 96 128 160 192 224 256
Wiper Setting (decimal)
FIGURE 2-8:
5 kΩ Rheo Mode – RW (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (VDD = 5.5V).
120
100
80
60
-40C Rw
-40C INL
-40C DNL
DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
INL
125C Rw
125C INL
125C DNL
0.3
0.2
0.1
0
-0.1
40 125°C 85°C -40°C 25°C
RW
-0.2
20 -0.3
0 32 64 96 128 160 192 224 256
Wiper Setting (decimal)
FIGURE 2-6:
5 kΩ Pot Mode – RW (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (VDD = 3.0V).
120
100
80
-40C Rw
-40C INL
-40C DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
INL
125C Rw
125C INL
125C DNL
1.25
0.75
0.25
60 -0.25
40 125°C 85°C 25°C -40°C RW DNL -0.75
20
0
-1.25
32 64 96 128 160 192 224 256
Wiper Setting (decimal)
FIGURE 2-9:
5 kΩ Rheo Mode – RW (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (VDD = 3.0V).
2500
2000
1500
-40C Rw
-40C INL
-40C DNL
INL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
125C Rw
125C INL
125C DNL
0.5
0.4
0.3
0.2
0.1
1000
0
500
0
0
DNL
RW
64 128 192
Wiper Setting (decimal)
-0.1
-0.2
-0.3
256
Note:
Refer to AN1080 for additional informa-
tion on the characteristics of the wiper
resistance (RW) with respect to device
voltage and wiper setting value.
FIGURE 2-7:
5 kΩ Pot Mode – RW (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (VDD = 1.8V).
2500
2000
1500
1000
-40C Rw
-40C INL
-40C DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
INL
125C Rw
125C INL
125C DNL
118
98
78
58
38
500
0
0
RW DNL
64 128 192
Wiper Setting (decimal)
18
-2
256
Note:
Refer to AN1080 for additional informa-
tion on the characteristics of the wiper
resistance (RW) with respect to device
voltage and wiper setting value.
FIGURE 2-10:
5 kΩ Rheo Mode – RW (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (VDD = 1.8V).
DS22060A-page 16
© 2007 Microchip Technology Inc.










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