DS1666 데이터 시트보기 (PDF) - Dallas Semiconductor -> Maxim Integrated
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DS1666 Datasheet PDF : 9 Pages
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www.dalsemi.com
DS1666
Audio Digital Resistor
FEATURES
128 position, digitally controlled poten-
tiometer
Operates from a +5 volts power supply with
TTL signal inputs
Wide analog voltage range of ±5 volts
Low-power CMOS
14-pin DIP or 16-pin SOIC for surface
mount applications
Default position on power up sets wiper
position to 10% of active digital taps (3% of
the total end-to-end resistance)
Operating temperature range
– Industrial temp. range: -40°C to +85°C
Resistance/Step
Resistance values Low End High End -3dB Point
DS1666-10 10K 24Ω
152Ω 1.0 MHz
DS1666-50 50K 122Ω 759Ω 200 kHz
DS1666-100 100K 243Ω 1.519Ω 100 kHz
PIN ASSIGNMENT
NC 1
14 NC
U/D 2
13 VCC
INC 3
CS 4
12 VB
11 VW
GND 5
10 VH
NC 6
9 VL
NC 7
8 NC
14-PIN DIP (300 MIL)
See Mech. Drawings Section
U/D 1
16 VCC
NC 2
15 NC
NC 3
14 VB
INC 4
13 VW
NC 5
CS 6
12 VH
11 NC
NC 7
10 NC
GND 8
9 VL
16-PIN SOIC (300 MIL)
See Mech. Drawings Section
PIN DESCRIPTIONS
VH
- High Terminal of Potentiometer
VL
- Low Terminal of Potentiometer
VW
- Wiper Terminal of Potentiometer
U/ D - Up/Down Control
INC
- Wiper Movement Control
CS
- Chip Select for Wiper Movement
NC
- No Connection
VCC
GND
- 5V Power Supply Input
- Ground
VB
- Substrate Bias Voltage (0 to -5V)
DESCRIPTION
The DS1666 Audio Digital Resistor is a solid-state potentiometer composed of 127 digitally controlled
resistive elements. Between each resistive section and both ends of the potentiometer are tap points
multiplexed to the wiper. The position of the wiper on the resistance array is controlled by the CS , U/ D
and INC inputs. The taper of the DS1666 is shown in Figure 1.
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