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DS1844 Datasheet دیتاشیت PDF دانلود

دیتاشیت - Dallas Semiconductor - Quad Digital Potentiometer

شماره قطعه DS1844
شرح مفصل Quad Digital Potentiometer
تولید کننده Dallas Semiconductor 
آرم Dallas Semiconductor 


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DS1844 شرح
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FEATURES
§ Four independent, digitally controlled 64-
position potentiometers
§ Two interface control options
- 5-wire serial
- 2-wire addressable
§ Standard resistance values
- DS1844-010 10 kW
- DS1844-050 50 kW
- DS1844-100 100 kW
§ Mixed resistor value combinations (contact
factory for availability)
§ Operating Temperature Range
- Industrial: -40°C to +85°C
DS1844
Quad Digital Potentiometer
PIN ASSIGNMENT
PS
H2
H3
W3
L3
L2
W2
R/W, A0
A2, RST
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
20-Pin DIP (300-mil)
De2v0i-cPeinDSeOsIcCri(p3t0i0o-nmil)
20-Pin TSSOP (173-mil)
VCC
H1
H0
W0
L0
L1
W1
SCL, CLK
SDA, DIN
A1, DOUT
PIN DESCRIPTION
VCC - 2.7V to 5.5V
PS - Port Select
A0, A1, A2 - Device Select Pins (2-Wire)
SDA
- Serial Data I/O (2-Wire)
SCL - Serial Clock (2-Wire)
R/ W - Read/Write enable (5-Wire)
RST
DIN
CLK
DOUT
H0-H3
L0-L3
W0-W3
GND
- Serial Port Reset Input (5-Wire)
- Serial Port Data Input (5-Wire)
- Serial Port Clock Input (5-Wire)
- Cascade Data Output (5-Wire)
- High-end Terminal of Pot
- Low-end Terminal of Pot
- Wiper Terminal of Pot
- Ground
DESCRIPTION
The DS1844 Quad Digital Potentiometer is a four-channel, digitally controlled linear potentiometer. Each
potentiometer is comprised of 63 equi-resistive sections and has three terminals accessible to the user.
These include the high side terminals, HX, the wiper terminals, WX, and the low-side terminals, LX. The
wiper position on the resistor ladder is selected via an 8-bit register value. Communication and control of
the device are supported by two types of serial interface. These include a 5-wire I/O shift register
interface and a 2-wire addressable interface.
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