X96012 Datasheet, PDF (10/27 Pages) Intersil Corporation – Universal Sensor Conditioner with Dual Look Up Table Memory and DACs

X96012
INTERSIL SENSOR CONDITIONER PRODUCT FAMILY
Device
X96010
X96011
X96012
Title
Sensor Conditioner with
Dual Look-Up Table
Memory and DACs
Temperature Sensor with
Look-Up Table Memory
and DAC
Universal Sensor
Conditioner with Dual
Look-Up Table Memory
and DACs
Internal
Temperature
Sensor
No
Yes
Yes
FSO = Full Scale Output, Ext = External, Int = Internal
External
Sensor
Input
Features/Functions
Internal
Voltage
Reference
VREF
Input /
Ouput
General
Purpose
EEPROM
Look Up
Table
Organi-
zation
# of
DACs
FSO
Current
DAC
Setting
Resistors
Yes
Yes
Yes
No
Dual Bank Dual
Ext
No
Yes
No
No
Single
Bank
Single
Int
Yes
Yes
Yes
Yes
Dual Bank Dual Ext / Int
DEVICE DESCRIPTION
The X96012 combines two Programmable Current
Generators, and integrated EEPROM with Block
Lock™ protection, in one package. The combination of
the X96012 functionality and Intersil’s QFN package
lowers system cost, increases reliability, and reduces
board space requirements.
Two on-chip Programmable Current Generators may
be independently programmed to either sink or source
current. The maximum current generated is deter-
mined by using an externally connected programming
resistor, or by selecting one of three predefined val-
ues. Both current generators have a maximum output
of ±3.2 mA, and may be controlled to an absolute res-
olution of 0.39% (256 steps/8 bit).
Both current generators may be driven using an on-
board temperature sensor, an external sensor, or Con-
trol Registers. The internal temperature sensor oper-
ates over a very broad temperature range (-40°C to
+100°C). The sensor output (internal or external) drives
an 8-bit A/D converter. The six MSBs of the ADC output
select one of 64 bytes from each nonvolatile look-up
table (LUT).
The contents of the selected LUT row (8-bit wide)
drives the input of an 8-bit D/A converter, which gener-
ates the output current.
All control and setup parameters of the X96012,
including the look-up tables, are programmable via the
2-wire serial port.
The general purpose memory portion of the device is a
CMOS serial EEPROM array with Intersil’s Block
Lock^TM protection.
The EEPROM array is internally organized as 272 x 8
bits with 16-Byte pages, and utilizes Intersil’s propri-
etary Direct Write^TM cells, providing a minimum endur-
ance of 100,000 Page Write cycles and a minimum
data retention of 100 years.
10
FN8216.0
March 10, 2005