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Número de pieza | MCP4162 | |
Descripción | 7/8-Bit Single/Dual SPI Digital POT | |
Fabricantes | Microchip Technology | |
Logotipo | ||
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No Preview Available ! 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
1 page MCP413X/415X/423X/425X
AC/DC CHARACTERISTICS (CONTINUED)
DC Characteristics
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.
Parameters
Sym
Min Typ Max Units
Conditions
Resistance
(± 20%)
RAB 4.0 5 6.0 kΩ -502 devices (Note 1)
8.0 10 12.0 kΩ -103 devices (Note 1)
40.0 50 60.0 kΩ -503 devices (Note 1)
80.0
100 120.0
kΩ -104 devices (Note 1)
Resolution
N
257 Taps 8-bit No Missing Codes
129 Taps 7-bit No Missing Codes
Step Resistance
RS
—
RAB /
—
(256)
Ω 8-bit Note 6
—
RAB /
—
(128)
Ω 7-bit Note 6
Nominal
Resistance Match
Wiper Resistance
(Note 3, Note 4)
|RAB0 - RAB1|
/ RAB
|RBW0 - RBW1|
/ RBW
RW
Nominal
Resistance
Tempco
ΔRAB/ΔT
Ratiometeric
Tempco
ΔVWB/ΔT
—
—
—
—
—
—
—
—
0.2 1.25
% MCP42X1 devices only
0.25 1.5
% MCP42X2 devices only,
Code = Full-Scale
75 160
Ω VDD = 5.5 V, IW = 2.0 mA, code = 00h
75 300
Ω VDD = 2.7 V, IW = 2.0 mA, code = 00h
50 — ppm/°C TA = -20°C to +70°C
100 — ppm/°C TA = -40°C to +85°C
150 — ppm/°C TA = -40°C to +125°C
15 — ppm/°C Code = Midscale (80h or 40h)
Resistor Terminal
Input Voltage
Range (Terminals
A, B and W)
VA,VW,VB
Vss
— VDD
V Note 5, Note 6
Maximum current
through A, W or B
IW
— — 2.5 mA Note 6, Worst case current through
wiper when wiper is either Full Scale or
Zero Scale.
Leakage current
into A, W or B
IWL
— 100 — nA MCP4XX1 PxA = PxW = PxB = VSS
— 100 — nA MCP4XX2 PxB = PxW = VSS
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.
© 2007 Microchip Technology Inc.
DS22060A-page 5
5 Page MCP413X/415X/423X/425X
1.1 SPI Mode Timing Waveforms and Requirements
VIH
CS
SCK
VIHH
VIL
70 72
71
80
VIH
84
83
79 78
SDO
MSb
BIT6 - - - - - -1
LSb
75, 76
77
SDI
MSb IN
BIT6 - - - -1
LSb IN
74
73
FIGURE 1-1:
SPI Timing Waveform (Mode = 11).
TABLE 1-1: SPI REQUIREMENTS (MODE = 11)
# Characteristic
SCK Input Frequency
70 CS Active (VIL or VIHH) to SCK↑ input
71 SCK input high time
72 SCK input low time
73 Setup time of SDI input to SCK↑ edge
74 Hold time of SDI input from SCK↑ edge
77 CS Inactive (VIH) to SDO output hi-impedance
80 SDO data output valid after SCK↓ edge
83 CS Inactive (VIH) after SCK↑ edge
84 Hold time of CS Inactive (VIH) to
CS Active (VIL or VIHH)
Note 1: This specification by design.
Symbol
FSCK
TcsA2scH
TscH
TscL
TDIV2scH
TscH2DIL
TcsH2DOZ
TscL2DOV
TscH2csI
TcsA2csI
Min Max Units
Conditions
— 10 MHz VDD = 2.7V to 5.5V
— 1 MHz VDD = 1.8V to 2.7V
60 — ns
45 — ns VDD = 2.7V to 5.5V
500 — ns VDD = 1.8V to 2.7V
45 — ns VDD = 2.7V to 5.5V
500 — ns VDD = 1.8V to 2.7V
10 — ns
20 — ns
— 50 ns Note 1
— 70 ns VDD = 2.7V to 5.5V
170 ns VDD = 1.8V to 2.7V
100 — ns VDD = 2.7V to 5.5V
1 ms VDD = 1.8V to 2.7V
50 — ns
© 2007 Microchip Technology Inc.
DS22060A-page 11
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet MCP4162.PDF ] |
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