DS1841N+T&R Maxim Integrated Products, DS1841N+T&R Datasheet - Page 9

• Manufacturer Part Number: DS1841N+T&R
• Description: IC RES LOG NV I2C 10-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS1841N+T&R

• Taps: 128
• Resistance (ohms): 22K
• Number Of Circuits: 1
• Temperature Coefficient: 250 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Resistance In Ohms: 22K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 1. LUT Hysteresis
Figure 2. Slave Address Byte
*THE SLAVE ADDRESS IS DETERMINED BY ADDRESS PINS A0, A1.
LUT34
LUT33
LUT32
LUT31
LUT30
MSB
0
1
_______________________________________________________________________________________
19
SLAVE ADDRESS*
0
21
TEMPERATURE (°C)
TEMPERATURE
1
DECREASING
1°C HYSTERESIS
WINDOW
23
0
TEMPERATURE
A1
INCREASING
25
Temperature-Controlled, NV, I
A0
READ/WRITE BIT
19
LSB
R/W
27
The DS1841 also features an internal 8-bit supply volt-
age (V
surement can be read over I
To calculate the supply voltage, simply convert the
hexadecimal result into decimal and then multiply it by
the LSB as shown in the Analog Voltage Monitoring
Characteristics electrical table.
The DS1841 has two supply current levels of power sup-
ply consumption. First, active current during I
munications while in the LUT-Driven Mode is the “worst
case” supply current, I
communication is operating simultaneously. Second,
active current without I
is quantified by the supply current, I
are held statically in the high logic level.
The slave address byte consists of a 7-bit slave
address plus a R/W bit (see Figure 2). The DS1841’s
slave address is determined by the state of the A0 and
A1 address pins. These pins allow up to four devices to
reside on the same I
result in a 0 in the corresponding bit position in the
slave address. Conversely, address pins tied to V
result in a 1 in the corresponding bit positions. For
example, the DS1841’s slave address byte is 50h when
A0 and A1 pins are grounded. I
described in detail in the I
Description section.
Logarithmic Resistor
CC
Slave Address Byte and Address Pins
) monitor. A value of the supply voltage mea-
2
C bus. Address pins tied to GND
2
CC
C while in the LUT-Driven Mode
. All functionality including I
Supply Voltage Monitoring
2
C at the address 0Eh.
Supply Current (I
2
2
C Serial Interface
C communication is
CC2
. SDA and SCL
2
C com-
2
C,
CC
CC
2
C
9
)