X9448 Datasheet, PDF (14/19 Pages) Xicor Inc. – Mixed Signal with 2-Wire Interface

X9448
BASIC APPLICATIONS
Programmable Level Detector with Memory (typical bias conditions)
SCL
SDA
V_REF1 (+5V)
+5V
(+5V)
SCL ^VCC
SDA
9448
V_H
V_W
V+
–
V_OUT
+
V_SS
V_L
V_NI
V–
V_{REF2 (-5V)}
+
(-5V)
V_TRANSDUCER (V_T)
–
V_OUT
V_T>V_W, V_OUT = High
V_T<V_W, V_OUT = Low
Programmable Window Detector with Memory
SCL
SDA
+5V
9448
+
–
V_W0
V_OUT0
V_OUT0
V_OUT0 = L
V_OUT1 = L
V_OUT0 = L
V_OUT1 = H
V_OUT0 = H
V_OUT1 = H
+
–
V_W1
V_OUT1
V_LL
(V_W1)
V_S
V_UL
(V_W0)
-5V
+
V_S
–
For the signal voltage V_S > the upper limit V_UL, (V_OUT0 = H) • (V_OUT1 = H)
V_S < the lower limit V_LL, (V_OUT0 = L) • (V_OUT1 = L)
For the window V_LL ≤ V_S ≤ V_UL, (V_OUT0 = L) • (V_OUT1 = H)
14
FN8201.0
April 18, 2005