SPT9693
WIDE INPUT VOLTAGE, JFET COMPARATOR
TECHNICAL DATA
MARCH 1, 2001
FEATURES
• Common mode range –3.0 to +8.0 V
• Low input bias current <100 pA
• Propagation delay 1.5 ns (max)
• Low offset ±25 mV
• Low feedthrough and crosstalk
• Differential latch control
APPLICATIONS
• Automated test equipment
• High-speed instrumentation
• Window comparators
• High-speed timing
• Line receivers
• High-speed triggers
• Threshold detection
• Peak detection
GENERAL DESCRIPTION
The SPT9693 is a high-speed, wide common mode volt-
age, JFET input, dual comparator. It is designed for appli-
cations that measure critical timing parameters in which
wide common mode input voltages of –3.0 to +8.0 V are
required. Propagation delays are constant for overdrives
greater than 50 mV.
JFET inputs reduce the input bias currents to the
nanoamp level, eliminating the need for input drivers and
buffers in most applications. The device has differential
analog inputs and complementary logic outputs com-
patible with ECL systems. Each comparator has a
complementary latch enable control that can be driven by
standard ECL logic.
The SPT9693 is available in 20-contact LCC and 20-lead
PLCC packages over the commercial temperature range.
It is also available in die form.
BLOCK DIAGRAM
Q
A
Q
A
Q
B
Q
B
GND
B
GND
A
LE
A
LE
A
N/C
AV
EE
(A)
LE
B
LE
B
N/C
AV
EE
(B)
AV
CC
(B)
AV
CC
(A) IN
A
+IN
A
+IN
B
IN
B
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
