DS1267BE-010+ Maxim Integrated, DS1267BE-010+ Datasheet - Page 6

• Manufacturer Part Number: DS1267BE-010+
• Description: Digital Potentiometer ICs Digital Sextet Potentiometer
• Manufacturer: Maxim Integrated

Specifications of DS1267BE-010+

• Resistance: 10 kOhms
• Temperature Coefficient: 750 PPM / C
• Tolerance: 20 %
• Number Of Pots: Dual
• Taps Per Pot: 256
• Digital Interface: 3-Wire
• Description/function: Dual Digital Potentiometer Chip
• Operating Supply Voltage: 4.5 V to 5.5 V
• Supply Current: 5 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-20
• Minimum Operating Temperature: - 40 C
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 4.5 V

LINEARITY MEASUREMENT CONFIGURATION Figure 5
NOTE:
In this setup, a ±2% delta in total resistance R0 to R1 would cause a ±2.5 MI error.
DS1267B ABSOLUTE AND RELATIVE LINEARITY Figure 6
TYPICAL APPLICATION CONFIGURATIONS
Figures 7 and 8 show two typical application configurations for the DS1267B. By connecting the wiper
terminal of the part to a high-impedance load, the effects of the wiper resistance is minimized, since the
wiper resistance can vary from 900Ω to 2000Ω depending on wiper voltage. Figure 7 presents the device
connected in an inverting variable gain amplifier. The gain of the circuit on Figure 7 is given by the
following equation:
Maxim Integrated ............................................................................................................................................................................................. 6
-0.1
-0.2
-0.3
-0.4
-0.5
0.5
0.4
0.3
0.2
0.1
0
0
32
Linearity vs. Tap Position
64
DNL
A
V
= -n/(255-n); where n = 0 to 255
96
Tap Position
INL
128
160
192
DS1267B
10kΩ
224
256