DS1856B-020 Maxim Integrated Products, DS1856B-020 Datasheet - Page 24

• Manufacturer Part Number: DS1856B-020
• Description: Digital Potentiometer ICs
• Manufacturer: Maxim Integrated Products

Specifications of DS1856B-020

• Number Of Pots: Dual
• Taps Per Pot: 256
• Resistance: 20 KOhms
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire)
• Operating Supply Voltage: 3.3 V, 5 V
• Supply Current: 2 mA
• Maximum Operating Temperature: + 95 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.85 V
• Package / Case: CSBGA-16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dual, Temperature-Controlled Resistors with Inter-
nally Calibrated Monitors and Password Protection
24
Scale
Scale
Offset
Offset
PWD Value
LUT
____________________________________________________________________
0
1
0
1
V
MON1 Scale .............. <R-pw2/W-pw2><NV><2.500V> Controls the Scaling or Gain of the
MON2 Scale .............. <R-pw2/W-pw2><2.500V> Controls the Scaling or Gain of the
MON3 Scale .............. <R-pw2/W-pw2><NV><2.500V> Controls the Scaling or Gain of the
V
MON1 Offset ............. <R-pw2/W-pw2><NV><0000h> Allows for offset control of MON1
MON2 Offset ............. <R-pw2/W-pw2><NV><0000h> Allows for offset control of MON2
MON3 Offset ............. <R-pw2/W-pw2><NV><0000h> Allows for offset control of MON3
Temp Offset ............... <R-pw2/W-pw2><NV><0000h> Allows for offset control of Temp
Password 1................ <R-NA/W-pw2><NV><FFFFFFFFh> The PWE value is compared
Password 2................ <R-NA/W-pw2><NV><FFFFFFFFh> The PWE value is compared
Res0 ........................... The unsigned value for Resistor 0.
Res1 ........................... The unsigned value for Resistor 1.
CC
CC
Scale ................... <R-pw2/W-pw2><NV><6.5535V> Controls the Scaling or Gain of the
Offset . ................. <R-pw2/W-pw2><NV><0000h> Allows for offset control of V
V
MON1 measurements.
MON2 measurements.
MON3 measurements.
measurement if desired.
measurement if desired.
measurement if desired.
measurement if desired.
measurement if desired.
against the value written to this location to enable PW1 access. At
power-on, the PWE value is set to all ones. Thus writing these bytes to
all ones grants PW1 access on power-up without writing the password entry.
against the value written to this location to enable PW2 access. At
power-on, the PWE value is set to all ones. Thus writing these bytes to
all ones grants PW2 access on power-up without writing the password entry.
CC
measurements.
Register Descriptions (continued)
CC