IC POT TRIM LOG 2.7-5.5V 8-DIP

 

DS1866

Manufacturer Part NumberDS1866
DescriptionIC POT TRIM LOG 2.7-5.5V 8-DIP
ManufacturerMaxim Integrated Products
DS1866 datasheets

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Specifications of DS1866

Taps8Resistance (ohms)10K
Number Of Circuits1Temperature Coefficient750 ppm/°C Typical
Memory TypeVolatileInterface3-Input Parallel
Voltage - Supply2.7 V ~ 5.5 VOperating Temperature-40°C ~ 85°C
Mounting TypeThrough HolePackage / Case8-DIP (0.300", 7.62mm)
Resistance In Ohms10KLead Free Status / RoHS StatusContains lead / RoHS non-compliant
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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 k
§ 8-pin DIPs; 8-pin (150) SOICs
§ Operating Temperature Range:
- Industrial: -40°C to +85°C
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.
Log Trimmer Potentiometer
PIN ASSIGNMENT
P0
1
8
P1
2
7
P2
H
3
6
L
GND
4
5
8-Pin DIP (300-mil)
See Mech. Drawings Section
P0
1
8
P1
2
7
P2
H
3
L
6
GND
4
5
W
8-Pin SOIC (150-mil)
See Mech. Drawings Section
PIN DESCRIPTION
H
- High End of Resistor
L
- Low End of Resistor
W
- Wiper Terminal
V
- 3V or 5V Power Supply Input
CC
P0
- Position Select - Bit 0
P1
- Position Select - Bit 1
P2
- Position Select - Bit 2
GND
- Ground
1 of 5
DS1866
V
CC
W
V
CC
102199

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DS1866 Summary of contents

  • Page 1

    ... The DS1866 is available as a 10k potentiometer and is available in an industrial temperature grade. Additionally, the DS1866 will operate from 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. ...

  • Page 2

    ... W-terminal whose position is controlled via a 3-terminal parallel port consisting of input signals P0, P1, and P2. A block diagram of the DS1866 is shown in Figure 1. Wiper position setting of the DS1866 is determined by the states of the P0, P1, and P2 input terminals. Table 1 below outlines position setting versus value of the parallel port inputs. A Position-0 setting places the wiper position at the L-terminal of the potentiometer and provides attenuation ...

  • Page 3

    ... One Time Programmability (OTP). The DS1866 can be easily used as an OTP device. This can be accomplished by terminating the P0, P1 desired logic levels during system manufacturing. On power up, the value of P0, P1, and P2 will then set the wiper position setting of the DS1866. DS1866 BLOCK DIAGRAM Figure 1 ...

  • Page 4

    ... GND +0 2.7V to 5.5V) CC MAX UNITS NOTES 400 µA +1 µA 1000 1 mA µA 50 µA = 2.7V to 5.5V) CC MAX UNITS NOTES +20 % +1.0 dB +1.0 dB MHz ppm/°C (25° 2.7V to 5.5V) CC MAX UNITS NOTES 2.7V to 5.5V) CC MAX UNITS NOTES 500 ns 102199 DS1866 ...

  • Page 5

    ... However, this change will not exceed ±20% of the nominal resistor value of the part. 8. Absolute tolerance is used to compare measured wiper voltage versus expected wiper voltage as determined by wiper position. The DS1866 is specified to provide an absolute tolerance of ±1.0 dB. 9. Tap-to-tap tolerance is used to determine the change in voltage between successive tap positions. The DS1866 is specified to provide a tap-to-tap tolerance specification of ± ...

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