DS1804X Maxim Integrated Products, DS1804X Datasheet

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DS1804X

Manufacturer Part Number
DS1804X
Description
DS1804X
Manufacturer
Maxim Integrated Products
Datasheet

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FEATURES
§ Six digitally controlled 64-position
§ 3-wire serial port provides for reading and
§ Devices can be cascaded for single processor
§ Standard resistance values:
§ Operating Temperature Range:
PIN DESCIPTION
V
D
CLK
C
H1 - H6
W1 - W6
GND
L1-3
L4-6
DESCRIPTION
The DS1806 Digital Sextet Potentiometer is a six-channel, digitally controlled, solid-state linear
potentiometer. Each potentiometer is comprised of 63 equiresistive sections as illustrated in the block
diagram of Figure 1. Each potentiometer has three terminals accessible to the user. These include the high
side terminals, H
through 3 share the same low-end terminal L1-3; likewise, potentiometers 4 through 6 share the low-end
terminal L4-6.
Each wiper’ s position is selected via an 8-bit register value. Communication and control of the device is
accomplished via a 3-wire serial port interface. This interface in conjunction with a cascade output allows
the value of the device wiper settings to be read.
www.dalsemi.com
RST
OUT
CC
IN
potentiometers
setting each potentiometer
multi-device control
-
-
-
-
DS1806-010
DS1806-050
DS1806-100
Industrial temperature: -40 C to +85 C
- 3V or 5V Supply
- Serial Port Reset Input
- Serial Port Data Input
- Serial Port Clock Input
- Cascade Data Output
- High End terminal of Pot
- Wiper Terminal of Pot
- Ground
- Low Terminal Pots 1 through 3
- Low Terminal Pots 4 through 6
X
, the wiper terminals, W
10 k
50 k
100 k
X
, and the low-end terminals, L1-3 and L4-6. Potentiometers 1
1 of 8
Digital Sextet Potentiometer
PIN ASSIGNMENT
DS1806E 20-Pin TSSOP (173-mil)
GND
DS1806S 20-Pin SOIC (300-mil)
L1-3
L4-6
CLK
RST
DS1806 20-Pin DIP (300-mil)
W1
W2
W3
W4
W6
See Mech. Drawings Section
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
H1
H2
H3
H4
H5
W5
H6
D
C
OUT
CC
IN
DS1806
102199

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DS1804X Summary of contents

Page 1

FEATURES § Six digitally controlled 64-position potentiometers § 3-wire serial port provides for reading and setting each potentiometer § Devices can be cascaded for single processor multi-device control § Standard resistance values: - DS1806-010 DS1806-050 50 ...

Page 2

For multiple device and single processor environments, the DS1806 can be cascaded or daisy-chained. This feature allows a single processor to control multiple devices. The DS1806 is available in 10, 50 and 100-kohm versions and is specified over the industrial ...

Page 3

Wiper placement for each potentiometer is such that position-63 corresponds to the H vice while position-0 corresponds to the ground terminal. For example, to set a potentiometer’ s wiper position to 15 (decimal), the binary value shifted into the wiper ...

Page 4

SERIAL PORT TIMING Figure 4 CASCADE OPERATION A feature of the DS1806 is the ability to control multiple devices from a single processor. Multiple DS1806s can be linked or daisy chained as shown in Figure data ...

Page 5

TYPICAL APPLICATION CONFIGURATIONS Figure 6 shows the typical application configuration of the DS1806 as a fixed gain attenuator. In this configuration, the DS1806 adjusts the attenuation level of the incoming signal. Variations in wiper resistance are minimized by connecting the ...

Page 6

ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...

Page 7

ANALOG RESISTOR CHARACTERISTICS PARAMETER End-to-End Resistor Tolerance Absolute Linearity Relative Linearity -3 dB Cutoff Frequency Temperature Coefficient CAPACITANCE PARAMETER Input Capacitance Output Capacitance AC ELECTRICAL CHARACTERISTICS PARAMETER Clock Frequency Width of CLK Pulse Data Setup Time Data Hold Time Propagation ...

Page 8

DS1806 depend on potentiometer total resistance: DS1806-010; 1 MHz; DS1806-050; 200 kHz, DS1806-100; 100 kHz. 5. See Figure 4. 6. For 10% maximum Absolute linearity is ...

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