DS1667-100 Dallas Semiconductor, DS1667-100 Datasheet
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DS1667-100
Manufacturer Part Number
DS1667-100
Description
Manufacturer
Dallas Semiconductor
Specifications of DS1667-100
Case
DIP/20
Date_code
95+
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DS1667-100
Manufacturer:
SONY
Quantity:
6 227
FEATURES
DS1667-10: 10k 39 ohms
DS1667-50: 50k 195 ohms
DS1667-100: 100k 390 ohms
DESCRIPTION
The DS1667 is a dual-solid state potentiometer that is adjustable by digitally selected resistive elements.
Each potentiometer is composed of 256 resistive elements. Between each resistive section of each
potentiometer are tap points accessible to the wiper. The position of the wiper on the resistive array is set
by an 8-bit register that controls which tap point is connected to the wiper output. Each 8-bit register can
be read or written by sending or receiving data bits over a 3-wire serial port. In addition, the resistors can
be stacked such that a single potentiometer of 512 sections results. When two separate potentiometers are
used, the resolution of the DS1667 is equal to the resistance value divided by 256. When the
potentiometers are stacked end to end, the resistance value is doubled while the resolution remains the
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Two digitally controlled 256-position
potentiometers
Serial port provides means for setting and
reading both potentiometers
Resistors can be connected in series to
provide additional resolution
Default wiper position on power up is 50%
Resistive elements are temperature-
compensated to +20% end to end
Two high-gain, wide bandwidth operational
amplifiers
Low power CMOS design
Applications include analog-to-digital and
digital-to-analog converters, variable
oscillators, and variable gain amplifiers
20-pin DIP package or optional 20-pin SOIC
surface mount package
Operating temperature range
- Commercial: 0 C to 70 C
Resistance values:
RESOLUTION -3 dB POINT
1.1 MHz
200 kHz
100 kHz
1 of 10
Digital Resistor with OP AMP
PIN ASSIGNMENT
PIN DESCRIPTION
V
GND
L0, L1
H0, H1
W0, W1
V
SOUT
DQ
CLK
COUT
NINV0, NINVI
INV0, INVI
OUT0, OUT1
RST
CC
B
20-Pin DIP (300-mil) and 20-Pin SOIC
NINV0
OUT1
INV0
GND
CLK
RST
W1
V
H1
L1
B
See Mech. Drawings Section
9
10
1
2
3
4
5
6
7
8
- +5-Volt Supply
- Ground
- Low End of Resistor
- High End of Resistor
- Wiper End of Resistor
- Substrate Bias and OP
- Wiper for Stacked
- Serial Port Reset Input
- Serial Port Input/Output
- Serial Port Clock Input
- Cascade Serial Port
- Noninverting OP AMP
- Inverting OP AMP Input
- OP AMP Outputs
AMP Negative Supply
Configuration
Output
Input
19
18
17
16
15
14
13
12
11
20
INVI
NINVI
V
OUT0
SOUT
H0
L0
COUT
DQ
W0
CC
DS1667
032000