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PDF MCP4451 Data sheet ( Hoja de datos )
| Número de pieza | MCP4451 | |
| Descripción | 7/8-Bit Volatile Quad Digital POT | |
| Fabricantes | Microchip Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MCP4451 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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MCP443X/5X
7/8-Bit Volatile Quad Digital POT
with I2C Interface
Features
• Quad Resistor Network
• Potentiometer or Rheostat Configuration Options
• Resistor Network Resolution:
7-bit – 128 Resistors (129 Taps)
8-bit – 256 Resistors (257 Taps)
• Four RAB Resistances options:
5 k
10 k
50 k
100 k
• Zero-scale to Full-scale Wiper Operation
• Low Wiper Resistance – 75 typical
• Low Tempco:
Absolute (Rheostat) – 50 ppm typical (0°-70°C)
Ratiometric (Potentiometer) – 15 ppm typical
• I2C Serial Interface Support:
100 kHz
400 kHz
3.4 MHz
• Serial Protocol Allows High-Speed Read/Write to
Wiper
• Resistor Network Terminal Disconnect Feature
via Terminal Control (TCON) Register
• Reset Input Pin
• Brown-out Reset Protection – 1.5V typical
• Serial Interface Inactive Current – 2.5 uA typical
• High-Voltage Tolerant Digital Inputs Up to 12.5V
• Supports Split Rail Applications
• Internal Weak Pull-up on All Digital Inputs, except
SCL and SDA
• 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 typical for 5.0 k Device
• Extended Temperature Range (-40°C to +125°C)
• Three Package Types:
4x4 QFN-20
TSSOP-20
TSSOP-14
Package Types (Top View)
MCP44X1 Quad Potentiometers
P3A
P3W
P3B
HVC/A0
SCL
SDA
VSS
P1B
P1W
P1A
1
2
3
4
5
6
7
8
9
10
20 P2A
19 P2W
18 P2B
17 VDD
16 A1
15 RESET
14 NC
12 P0B
12 P0W
11 P0A
TSSOP
P3B 1 20 19 18 17 16 15 VDD
HVC/A0 2
14 A1
SCL 3
SDA 4
EP
21
13 RESET
12 NC
VSS 5
11 P0B
6 7 8 9 10
4x4 QFN
MCP44X2 Quad Rheostat
P3W
P3B
HVC/A0
SCL
SDA
VSS
P1B
1
2
3
4
5
6
7
14 P2W
13 P2B
12
11
VDD
A1
10 P0B
9 P0W
8 P1W
TSSOP
2010 Microchip Technology Inc.
DS22267A-page 1
1 page  
MCP443X/5X
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 k, 10 k, 50 k, 100 k devices.
Typical specifications represent values for VDD = 5.5V, TA = +25°C.
Min Typ Max Units
Conditions
Resistance
(± 20%)
RAB 4.0 5 6.0 k -502 devices(Note 1)
8.0 10 12.0 k -103 devices(Note 1)
40.0 50 60.0 k -503 devices(Note 1)
80.0
100 120.0
k -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)
8-bit Note 6
—
RAB /
—
(128)
7-bit Note 6
Nominal
Resistance Match
(| RABWC -
RABMEAN |) /
RABMEAN
—
—
—
0.2 1.50
0.2 1.25
0.2 1.0
% 5 k MCP44X1 devices only
% 10 k
% 50 k
— 0.2 1.0 % 100 k
(| RBWWC -
RBWMEAN |) /
RBWMEAN
—
—
—
0.25 1.75
0.25 1.50
0.25 1.25
% 5 k Code = Full Scale
% 10 k
% 50 k
— 0.25 1.25 % 100 k
Wiper Resistance
(Note 3, Note 4)
RW
—
75 160
VDD = 5.5 V, IW = 2.0 mA, code = 00h
—
75 300
VDD = 2.7 V, IW = 2.0 mA, code = 00h
Nominal
Resistance
Tempco
RAB/T
— 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
Ratiometeric
Tempco
VWB/T — 15 — ppm/°C Code = Midscale (80h or 40h)
Resistance
Tracking
RTRACK
Section 2.0
ppm/°C See Typical Performance Curves
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: MCP44X1 only.
4: MCP44X2 only, includes VWZSE and VWFSE.
5: Polarity of resistor terminals A, W and B, 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 MCP44X1 is externally connected to match the configurations of the MCP44X2, and then tested.
9: POR/BOR is not rate dependent.
10: Supply current is independent of current through the resistor network.
11: When HVC/A0 = VIHH, the IDD current is less due to current into the HVC/A0 pin. See IPU specification.
2010 Microchip Technology Inc.
DS22267A-page 5
5 Page 
MCP443X/5X
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 k, 10 k, 50 k, 100 k devices.
Typical specifications represent values for VDD = 5.5V, TA = +25°C.
Min Typ Max Units
Conditions
Weak Pull-up
Current
HVC Pull-up /
Pull-down
Resistance
IPU
RHVC
—
—
1.75
mA Internal VDD pull-up, VIHH pull-down,
VDD = 5.5V, VHVC = 12.5V
— 170 — µA HVC pin, VDD = 5.5V, VHVC = 3V
— 16 — k VDD = 5.5V, VHVC = 3V
RESET Pull-up
Resistance
RRESET
— 16 — k VDD = 5.5V, VRESET = 0V
Input Leakage
Current
IIL -1 — 1 µA VIN = VDD (all pins) and
VIN = VSS (all pins except RESET)
Pin Capacitance
CIN, COUT
—
10 — pF fC = 20 MHz
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
RAM (Wiper, TCON) Value
Value Range
N 0h — 1FFh hex 8-bit device
0h — 1FFh hex 7-bit device
TCON POR/BOR
Setting
1FF hex All Terminals connected
Power Requirements
Power Supply
Sensitivity
(MCP44X1)
PSS
— 0.0015 0.0035 %/% 8-bit VDD = 2.7V to 5.5V,
VA = 2.7V, Code = 80h
— 0.0015 0.0035 %/% 7-bit VDD = 2.7V to 5.5V,
VA = 2.7V, Code = 40h
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: MCP44X1 only.
4: MCP44X2 only, includes VWZSE and VWFSE.
5: Polarity of resistor terminals A, W and B, 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 MCP44X1 is externally connected to match the configurations of the MCP44X2, and then tested.
9: POR/BOR is not rate dependent.
10: Supply current is independent of current through the resistor network.
11: When HVC/A0 = VIHH, the IDD current is less due to current into the HVC/A0 pin. See IPU specification.
2010 Microchip Technology Inc.
DS22267A-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MCP4451.PDF ] | |
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