DS1801+ Maxim Integrated Products, DS1801+ Datasheet - Page 2

• Manufacturer Part Number: DS1801+
• Description: IC POT DUAL AUDIO TAPER 14-PDIP
• Manufacturer: Maxim Integrated Products

Specifications of DS1801+

• Taps: 64
• Resistance (ohms): 45K
• Number Of Circuits: 2
• Temperature Coefficient: 750 ppm/°C Typical
• Memory Type: Volatile
• Interface: 3-Wire Serial
• Voltage - Supply: 2.7 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: 45K
• Number Of Pots: Dual
• Taps Per Pot: 64
• Resistance: 400 Ohms
• Wiper Memory: Volatile
• Digital Interface: Serial (3-Wire)
• Operating Supply Voltage: 2.7 V to 5.5 V
• Supply Current: 50 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Description/function: Dual Audio Taper Potentiometer
• Mounting Style: Through Hole
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Tolerance: 20 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

OPERATION
The DS1801 provides two 65-position potentiometers per package, each having a logarithmic resistive
characteristic as shown in Table 1. The DS1801 is controlled by a 3-wire serial interface. The 3-wire
serial interface is designed for CPU-controlled applications and allows the potentiometer’s exact wiper
position to be read or written.
environments.
Figure 1 presents a block diagram of the DS1801. As shown, the inputs from the 3-wire serial interface
drive a command/control unit. The command/control unit interprets these inputs for control of the two
potentiometers.
On power-up, the serial port is stable and active within 10 microseconds. The wiper position on power-up
will be at position 63, the low end of the potentiometer. Position 64 is the mute level.
RESISTANCE CHARACTERISTICS Table 1
DS1801 BLOCK DIAGRAM Figure 1
POSITION
64(mute)
63
0
1
2
3
4
5
The DS1801 design supports daisy-chaining for multi-device
OUTPUT LEVEL (dB)
2 of 10
<-90
-63
-1
-2
-3
-4
-5
0
DS1801