DS1856E-020/T&R Maxim Integrated Products, DS1856E-020/T&R Datasheet - Page 8
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DS1856E-020/T&R
Manufacturer Part Number
DS1856E-020/T&R
Description
Digital Potentiometer ICs
Manufacturer
Maxim Integrated Products
Datasheet
1.DS1856B-050.pdf
(31 pages)
Specifications of DS1856E-020/T&R
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
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.85 V
Package / Case
TSSOP-16
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Dual, Temperature-Controlled Resistors with Inter-
nally Calibrated Monitors and Password Protection
8
The user can read the registers that monitor the V
MON1, MON2, MON3, and temperature analog signals.
After each signal conversion, a corresponding bit is set
that can be monitored to verify that a conversion has
occurred. The signals also have alarm and warning flags
that notify the user when the signals go above or below
the user-defined value. Interrupts can also be set for
each signal.
PIN
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
_____________________________________________________________________
BALL
B2
A2
C3
A1
B1
C2
C1
D1
D3
D4
C4
D2
B3
B4
A4
A3
NAME
MON1
MON2
MON3
OUT1
OUT2
GND
SDA
SCL
N.C.
V
IN1
IN2
H0
H1
L0
L1
CC
Detailed Description
2-Wire Serial Data I/O Pin. Transfers serial data to and from the device.
2-Wire Serial Clock Input. Clocks data into and out of the device.
Open-Drain Buffer Output
TTL/CMOS-Compatible Input to Buffer
Open-Drain Buffer Output
TTL/CMOS-Compatible Input to Buffer
No Connection
Ground
External Analog Input
External Analog Input
External Analog Input
Low-End Resistor 0 Terminal. It is not required that the low-end terminals be connected to a potential
less than the high-end terminals of the corresponding resistor. Voltage applied to any of the resistor
terminals cannot exceed the power-supply voltage, V
High-End Resistor 0 Terminal. It is not required that the high-end terminals be connected to a
potential greater than the low-end terminals of the corresponding resistor. Voltage applied to any of
the resistor terminals cannot exceed the power-supply voltage, V
Low-End Resistor 1 Terminal
High-End Resistor 1 Terminal
Supply Voltage
CC
,
The position values of each resistor can be indepen-
dently programmed. The user can assign a unique
value to each resistor for every 2°C increment over the
-40°C to +102°C range.
Two buffers are provided to convert logic-level inputs
into open-drain outputs. Typically, these buffers are
used to implement transmit (Tx) fault and loss-of-signal
(LOS) functionality. Additionally, OUT1 can be asserted
in the event that one or more of the monitored values
go beyond user-defined limits.
FUNCTION
CC
, or go below ground.
CC
, or go below ground.
Pin Description