MCP4661T-502E/ML Microchip Technology, MCP4661T-502E/ML Datasheet - Page 70
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MCP4661T-502E/ML
Manufacturer Part Number
MCP4661T-502E/ML
Description
IC DGTL POT 5K 256TAPS 16-QFN
Manufacturer
Microchip Technology
Datasheet
1.MCP4541T-502EMF.pdf
(92 pages)
Specifications of MCP4661T-502E/ML
Package / Case
16-QFN
Taps
257
Resistance (ohms)
5K
Number Of Circuits
2
Temperature Coefficient
150 ppm/°C Typical
Memory Type
Non-Volatile
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Resistance In Ohms
5K
Number Of Pots
Dual
Taps Per Pot
256
Resistance
5 KOhms
Wiper Memory
Non Volatile
Digital Interface
Serial (2-Wire, I2C)
Operating Supply Voltage
2.5 V, 3.3 V, 5 V
Supply Current
2.5 uA
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
MCP4661T-502E/MLTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP4661T-502E/ML
Manufacturer:
Microchip
Quantity:
4 192
Part Number:
MCP4661T-502E/ML
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
MCP454X/456X/464X/466X
8.5
In the design of a system with the MCP4XXX devices,
the following considerations should be taken into
account:
•
•
8.5.1
The typical application will require a bypass capacitor
in order to filter high-frequency noise, which can be
induced onto the power supply's traces. The bypass
capacitor helps to minimize the effect of these noise
sources on signal integrity.
appropriate bypass strategy.
In this example, the recommended bypass capacitor
value is 0.1 µF. This capacitor should be placed as
close (within 4 mm) to the device power pin (V
possible.
The power source supplying these devices should be
as clean as possible. If the application circuit has
separate digital and analog power supplies, V
V
FIGURE 8-7:
Connections.
DS22107A-page 70
SS
Power Supply Considerations
Layout Considerations
should reside on the analog plane.
W
A
B
Design Considerations
POWER SUPPLY
CONSIDERATIONS
0.1 µF
V
V
Typical Microcontroller
DD
SS
Figure 8-7
0.1 µF
SDA
SCL
illustrates an
V
V
DD
SS
DD
DD
) as
and
8.5.2
Inductively-coupled AC transients and digital switching
noise can degrade the input and output signal integrity,
potentially masking the MCP4XXX’s performance.
Careful board layout minimizes these effects and
increases the Signal-to-Noise Ratio (SNR). Multi-layer
boards utilizing a low-inductance ground plane,
isolated inputs, isolated outputs and proper decoupling
are critical to achieving the performance that the silicon
is capable of providing. Particularly harsh environ-
ments may require shielding of critical signals.
If low noise is desired, breadboards and wire-wrapped
boards are not recommended.
8.5.3
Characterization curves of the resistor temperature
coefficient (Tempco) are shown in
Figure
These curves show that the resistor network is
designed to correct for the change in resistance as
temperature increases. This technique reduces the
end to end change is R
8.5.4
High Voltage support (V
supports user configuration of the Non-Volatile
EEPROM, Write Protect, and WiperLock feature.
Note:
2-21,
LAYOUT CONSIDERATIONS
RESISTOR TEMPCO
HIGH VOLTAGE TOLERANT PINS
In many applications, the High Voltage will
only be present at the manufacturing
stage so as to “lock” the Non-Volatile
wiper value (after calibration) and the con-
tents of the EEPROM. This ensures that
the since High Voltage is not present
under normal operating conditions, that
these values can not be modified.
Figure
2-32, and
AB
IHH
© 2008 Microchip Technology Inc.
resistance.
) on the Serial Interface pins
Figure
2-43.
Figure
2-10,