X9440 Datasheet, PDF (16/21 Pages) Intersil Corporation – Mixed Signal with SPI Interface

BASIC APPLICATIONS
X9440
Programmable Level Detector with Memory (typical bias conditions)
V_REF1 (+5V)
+5V
(+5V)
SCL
SDA
SCL ^VCC
SDA
9440
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
9440
+
–
V_W0
V_OUT0
+
–
V_W1
V_OUT1
V_OUT0
V_OUT0 = L
V_OUT1 = L
V_OUT0 = L
V_OUT1 = H
V_OUT0 = H
V_OUT1 = H
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)
16
FN8200.0
March 28, 2005