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PDF SPT9691 Data sheet ( Hoja de datos )
| Número de pieza | SPT9691 | |
| Descripción | WIDE INPUT VOLTAGE / JFET COMPARATOR | |
| Fabricantes | SPT | |
| Logotipo |  |
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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
APPLICATIONS
• Automated Test Equipment
• High-Speed Instrumentation
• Window Comparators
• High-Speed Timing
• Line Receivers
• High-Speed Triggers
• Threshold Detection
• Peak Detection
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 com-
mon 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
most applications. The device has differential analog inputs
and complementary logic outputs compatible with ECL sys-
tems. 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.
BLOCK DIAGRAM
QA
QA
GNDA
LEA
QB
QB
GNDB
LE B
LEA
DVEE(A)
A
LE B
B DV EE(B)
AVEE(A)
AVCC(A)
-INA
+INA
AV EE (B)
AVCC (B)
-INB
+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: [email protected]
1 page  
TYPICAL PERFORMANCE CURVES
INPUT OFFSET VOLTAGE VS COMMON MODE VOLTAGE
(T=+25 °C)
+10.0
INPUT BIAS CURRENT VS COMMON MODE VOLTAGE
(+25 °C)
100
+6.0
10
+2.0
1.0
-2.0 0.1
-6.0 0.01
-10.0
-4.0
-1.6
+0.8
+3.2
+5.6
COMMON MODE VOLTAGE (V)
+8.0
PROPOGATION DELAY TIME VS TEMPERATURE
(V OD=150 mV)
2.4
2.2
2.0
1.8
1.6
1.4
0
+25 +50 +75
TEMPERATURE (°C)
+100
RISE AND FALL OF OUTPUTS VS TIME CROSSOVER
-.90
0.001
-4.0
-1.6 +0.8 +3.2 +5.6
COMMON MODE VOLTAGE (V)
+8.0
PROPAGATION DELAY TIME VS OVERDRIVE (mV)
3.0
2.8
2.6
2.4
2.2
2.0
1.8
0 50 100 150 200 250 300 350
OVERDRIVE (mV)
HYSTERESIS VS ∆LATCH
20
-1.10
-1.30
-1.50
-1.70
-1.90
1.1 1.5 1.9 2.3 2.7 3.5
TIME (ns)
SPT
5
15
VIN (CM) = 0.0 V
10
5
0
-20 0 20 40 60
∆LATCH = (VLE - VLE) mV
SPT9691
10/6/97
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SPT9691.PDF ] | |
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