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Rainbow-electronics DS1866 Manual de usuario Pagina 1

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1 of 5 102199
FEATURES
Single 8-position Log Trimmer Potentiometer
5-dB/step
Operates from 2.7V to 5.5V supplies
Parallel interface control: P0, P1, P2
Standard Resistance Value: 10 kΩ
8-pin DIPs; 8-pin (150) SOICs
Operating Temperature Range:
- Industrial: -40°C to +85°C
PIN ASSIGNMENT
PIN DESCRIPTION
H - High End of Resistor
L - Low End of Resistor
W - Wiper Terminal
V
CC
- 3V or 5V Power Supply Input
P0 - Position Select - Bit 0
P1 - Position Select - Bit 1
P2 - Position Select - Bit 2
GND - Ground
DESCRIPTION
The DS1866 Log Trimmer Potentiometer is a single volatile digital potentiometer having eight positions
with a 5-dB resolution per step. The device provides an ideal method for low-cost trimming or volume
control using a CPU or manual control input. The device’s wiper position is set to one of eight positions
by a 3-terminal parallel port. The value of the wiper position is determined by the P0, P1, and P2 port
pins.
The DS1866 is available as a 10k potentiometer and is available in an industrial temperature grade.
Additionally, the DS1866 will operate from 3V or 5V supplies and is ideal for portable applications
requiring low standby current. Two packaging options are available and include the 8-pin (300-mil) DIP,
8-pin (150-mil) SOIC.
DS1866
Log Trimmer Potentiometer
www.dalsemi.com
8-Pin DIP (300-mil)
See Mech. Drawings Section
P0
P1
H
GND
V
CC
P2
L
W
1
2
3
4
8
7
6
5
P0
P1
H
GND
V
CC
P2
L
W
1
2
3
4
8
7
6
5
8-Pin SOIC (150-mil)
See Mech. Drawings Section
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Indice de contenidos

Pagina 1 - Log Trimmer Potentiometer

1 of 5 102199FEATURES Single 8-position Log Trimmer Potentiometer5-dB/step Operates from 2.7V to 5.5V supplies Parallel interface control: P0, P1,

Pagina 2 - PIN DESCRIPTIONS

DS18662 of 5 102199OPERATIONThe DS1866 is a single volatile potentiometer. The device has a total of eight positions providing aresolution of 5 dB per

Pagina 3 - DS1866 BLOCK DIAGRAM Figure 1

DS18663 of 5 102199One Time Programmability (OTP). The DS1866 can be easily used as an OTP device. This can beaccomplished by terminating the P0, P1,

Pagina 4 - Temperature Coefficient

DS18664 of 5 102199ABSOLUTE MAXIMUM RATINGS*Voltage on Any Pin Relative to Ground -0.5V to +7.0VOperating Temperature -40°C to +85°CStorage Temperat

Pagina 5 - DS1866 ORDERING INFORMATION

DS18665 of 5 102199NOTES:1. All voltages are referenced to ground.2. For VCC = 5V ± 10% maximum VIL = +0.8V. For VCC 3.0 ± 10% VIL = +0.6V. For VCC =2

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