SPT SPT9691SCC, SPT9691SCN, SPT9691SCP, SPT9691SCU Datasheet
SPT9691
WIDE INPUT VOLTAGE, JFET COMPARATOR
FEATURES
• Common Mode Range -4.0 to +8.0 V
• Low Input Bias Current <100 pA
• Propagation Delay 2.5 ns (max)
• Low Offset ±25 mV
• Low Feedthrough and Crosstalk
• Differential Latch Control
GENERAL DESCRIPTION
The SPT9691 is a high-speed, wide common mode voltage,
JFET input, dual comparator. It is designed for applications
that measure critical timing parameters in which wide common mode input voltages of -4.0 to +8.0 V are required.
Propagation delays are constant for overdrives greater than
200 mV.
JFET inputs reduce the input bias currents to the nanoamp
level, eliminating the need for input drivers and buffers in
BLOCK DIAGRAM
Q
A
APPLICATIONS
• Automated Test Equipment
• High-Speed Instrumentation
• Window Comparators
• High-Speed Timing
• Line Receivers
• High-Speed Triggers
• Threshold Detection
• Peak Detection
most applications. The device has differential analog inputs
and complementary logic outputs compatible with ECL systems. Each comparator has a complementary latch enable
control that can be driven by standard ECL logic.
The SPT9691 is available in 20-lead PLCC, 20-lead plastic
DIP and 20-contact LCC packages over the commercial
temperature range. It is also available in die form.
Q
B
Q
GNDA
LEA
LEA
DVEE(A)
AV
EE(A)
AVCC(A)
-INA
+IN
A
A
A
B
Q
B
GND
LE
DV (B)
AV (B)
LE
B
B
B
EE
EE
AVCC (B)
-IN
B
+IN
B
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300 FAX: (719) 528-2370 Website: http://www.spt.com E-Mail: sales@spt.com
ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)1 25°C
Supply Voltages (Measured to GND)
Positive Supply Voltage (AVCC)..............-0.5 to +11.0 V
Negative Supply Voltage (AVEE) ............-11.0 to +0.5 V
Negative Supply Voltage (DVEE) ..............-6.0 to +0.5 V
Input Voltages
Input Common Mode Voltage ........ DVEE-1 to +AVCC+1
Differential Input Voltage ......................-12.0 to +12.0 V
Input Voltage, Latch Controls .................. DVEE to 0.5 V
VIN to AVCC Differential Voltage ................-16 to +1.0 V
VIN to AVEE Differential Voltage................+4 to +21.0 V
Note: 1. Operation at any Absolute Maximum Rating is not implied. See Electrical Specifications for proper nominal applied
conditions in typical applications. Application of multiple maximum rating conditions at the same time may damage
the device.
Output
Output Current .......................................................30 mA
Temperature
Operating Temperature, ambient.................. 0 to +70 °C
junction ....................... +150 °C
Lead Temperature, (soldering 60 seconds)........ +300 °C
Storage Temperature................................-65 to +150 °C
ELECTRICAL SPECIFICATIONS
T A = +25 °C, AVCC = +10 V, AVEE=-10.0 V, DVEE=-5.2 V, RL = 50 Ohm to -2V, unless otherwise specified.
TEST TEST
PARAMETERS CONDITIONS LEVEL MIN TYP MAX UNITS
DC ELECTRICAL CHARACTERISTICS
Input Offset Voltage V
Offset Voltage Tempco V 50 µV/°C
Input Bias Current I ±0.1 ±10 nA
Input Bias Current T
Input Offset Current V ±1.0 nA
Input Offset Current T
Positive Supply Current (Dual) AVcc=10 V I 25 33 mA
Negative Supply Current (Dual) AVEE=-10.0 V I 15 20 mA
Negative Supply Current (Dual) DVEE=-5.2 V I 55 70 mA
Positive Supply Voltage, AV
Negative Supply Voltage, AV
Negative Supply Voltage, DV
Input Common Mode Range I -4.0 +8.0 V
Latch Enable
Common Mode Range IV -2.0 0 V
Differential Voltage Range I ±10 V
Open Loop Gain V 60 dB
Differential Input Resistance V 2 GΩ
Input Capacitance LCC Package 1.0 pF
Power Supply Sensitivity V 60 dB
Common Mode Rejection Ratio I 50 60 dB
CC
EE
EE
=0 I -25 0.0 +25 mV
IN,CM
T
< TA<T
MIN
<TA<T
MIN
<TA<T
MIN
PLCC Package 1.0 pF
PDIP 2.9 pF
T
< TA<T
MIN
MAX
MAX
MAX
MAX
IV -25 0.0 +25 mV
IV ±2.0 ±100 nA
V ±10 nA
IV 9.75 10.0 10.25 V
IV -9.75 -10.0 -10.25 V
IV -4.95 -5.2 -5.45 V
IV 45 55 dB
SPT
SPT9691
2 10/6/97
ELECTRICAL SPECIFICATIONS
T A = +25 °C, AVCC = +10 V, AVEE=-10.0 V, DVEE=-5.2 V, RL = 50 Ohm to -2V, unless otherwise specified.
TEST TEST
PARAMETERS CONDITIONS LEVEL MIN TYP MAX UNITS
DC ELECTRICAL CHARACTERISTICS
Power Dissipation Dual I 700 895 mW
Output High Level ECL 50 Ohms to -2V I -.98 -.70 V
Output Low Level ECL 50 Ohms to -2V I -1.95 -1.65 V
AC ELECTRICAL CHARACTERISTICS
Propagation Delay
Propagation Delay TEMPCO V 2 ps/ °C
Propagation Delay Skew (A vs B) V 100 ps
Propagation Delay Dispersion
Latch Set-up Time V 1.7 ns
Latch to Output Delay 150 mV O.D. V 0.8 ns
Latch Pulse Width V 2 ns
Latch Hold Time V -1.9 ns
Rise Time 20% to 80% V 0.4 ns
Fall Time 20% to 80% V 0.4 ns
Slew Rate V 3 V/ns
1
2
150 mV O.D. IV 1.5 2.0 2.5 ns
150 mV Overdrive Min. V 200 ps
NOTES:
1
Valid for both high-to-low and low-to-high transitions.
2
Dispersion is the change in propagation delay due to changes in slew rate, overdrive, and common mode level.
TEST LEVEL CODES
All electrical characteristics are subject to the
following conditions:
All parameters having min/max specifications
are guaranteed. The Test Level column indicates the specific device testing actually performed during production and Quality Assurance inspection. Any blank section in the data
column indicates that the specification is not
tested at the specified condition.
TEST LEVEL
I
II
III
IV
V
VI
TEST PROCEDURE
100% production tested at the specified temperature.
100% production tested at TA=25 °C, and sample
tested at the specified temperatures.
QA sample tested only at the specified temperatures.
Parameter is guaranteed (but not tested) by design
and characterization data.
Parameter is a typical value for information purposes
only.
100% production tested at TA = 25 °C. Parameter is
guaranteed over specified temperature range.
SPT
SPT9691
3 10/6/97
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