X96011_08 Datasheet, PDF (10/18 Pages) Intersil Corporation – Temperature Sensor with Look-Up Table Memory and DAC

X96011
V_CC
INTERNAL
REFERENCE
VOLTAGE
DAC
INPUT BYTE
VOLTAGE
DIVIDER
IDS: BIT
6 IN CONTROL
REGISTER 0.
+
-
POLARITY
SELECT
CIRCUIT
IFSO[1:0]
BITS 1 AND 0
IN CONTROL
REGISTER 5
11
10 01
IOUT PIN
V_SS
V_SS
V_SS
FIGURE 5. D/A CONVERTER BLOCK DIAGRAM
LUT Row
Selection bits
90h
6
A
D
D
8
E
8R
LUT
CFh
90h
DDA[7:0] : Control register 3
8
D1
8
D0 ^Out
Select
DAC
Input Byte
DDAS: Bit 5 of
Control register 5
FIGURE 6. LOOK-UP TABLE (LUT) OPERATION
VOLTAGE
REFERENCE
VOLTAGE INPUT
FROM INTERNAL
TEMPERATURE
SENSOR
10
ADC
6
8
AD[7:0]
STATUS
REGISTER
LDA[5:0]: ₆
CONTROL
D1
REGISTER 1
OUT
D0
SELECT
LUT ROW
SELECTION BITS
LDAS: BIT 4 IN
CONTROL REGISTER 5
FIGURE 7. LOOK-UP TABLE ADDRESSING
FN8215.2
February 25, 2008