DS1666-10 Maxim Integrated Products, DS1666-10 Datasheet - Page 2
![IC RESISTOR AUDIO DIG 10K 14-DIP](/photos/6/57/65726/175-14-dip_sml.jpg)
DS1666-10
Manufacturer Part Number
DS1666-10
Description
IC RESISTOR AUDIO DIG 10K 14-DIP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS1666S-10.pdf
(9 pages)
Specifications of DS1666-10
Taps
128
Resistance (ohms)
10K
Number Of Circuits
1
Temperature Coefficient
750 ppm/°C Typical
Memory Type
Volatile
Interface
Increment/Decrement
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
14-DIP (0.300", 7.62mm)
Resistance In Ohms
10K
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS1666-10
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
DS1666-100+
Manufacturer:
Maxim Integrated Products
Quantity:
135
The DS1666 is uniquely designed to provide a potentiometer that is pseudo-logarithmic rather than linear
across its entire range. The lower half of the potentiometer advances 1% of total resistance for each 3%
of scale advanced, providing for precise amplification of low volume signals. The upper half of the
potentiometer advances 2% of resistance for every 1% of scale advanced, providing for the lower
resolution gain required for high volume amplification.
GRAPH OF AUDIO TAPER Figure 1
OPERATION
The DS1666 has a total of 128 tap-points including the V
segments exist between the V
whose position is controlled via a 3-terminal control port. A block diagram of the DS1666 is shown in
Figure 2.
The 3-terminal port of the DS1666 provides an increment/ decrement interface which is activated via a
chip select input. This interface consists of the input signals
control a 7-bit up/down counter. The output of the 7-bit up/down counter controls a 1 of 128 decoder to
select wiper position. The timing diagram for the 3-terminal interface control is shown in Figure 4.
ANALOG CHARACTERISTICS
The DS1666 has a pseudo-logarithmic resistor array that resembles an audio taper potentiometer as
shown in Figure 1. Taps on the lower portion of the potentiometer increment 0.25% of the total
resistance and are specified to within ±0.5% of the expected value. Taps on the higher portion increment
1.5% of the total resistance and are specified to within ±2.0% of the expected value.
End-to-End Resistance Tolerance = ±20 %
Temperature Coefficient = 750 PPM/°C typical
L
and V
H
terminals. These tap-points are accessible to the V
2 of 9
L
and V
CS
,
H
INC
terminals. A total of 127 resistive
, and U/
D
. These input signals
W
102899
terminal