SPT9691SCC ETC [List of Unclassifed Manufacturers], SPT9691SCC Datasheet - Page 6

• Manufacturer Part Number: SPT9691SCC
• Description: WIDE INPUT VOLTAGE, JFET COMPARATOR
• Manufacturer: ETC [List of Unclassifed Manufacturers]

GENERAL INFORMATION
The SPT9691 is an ultrahigh-speed dual voltage compara-
tor. It offers tight absolute characteristics. The device has
differential analog inputs and complementary logic outputs
compatible with ECL systems. The output stage is adequate
for driving terminated 50 ohm transmission lines.
The SPT9691 has a complementary latch enable control for
each comparator. Both should be driven by standard ECL
logic levels.
Figure 2 - Internal Function Diagram
SPT
+IN
- IN
AV
EE
DV
EE
REF
1
V
+
-
CC
AMP
PRE
REF
2
GND
LE
LATCH
CLK
BUF
LE
6
A common mode voltage range of -4 V to +8 V is achieved by
a proprietary JFET input design which requires a separate
negative power supply (AV
The dual comparators have separate AV
grounds for each comparator to achieve high crosstalk rejec-
tion. Single channel operation can be accomplished by float-
ing all pins (including the ground and supply pins) of the
unused comparator. Power dissipation during single channel
operation is 50% of the dissipation during dual channel
operation.
OUT
ECL
EE
).
CC,
AV
Q
Q
EE,
DV
SPT9691
EE,
10/6/97
and