E7802 SEMTECH [Semtech Corporation], E7802 Datasheet - Page 18

• Manufacturer Part Number: E7802
• Description: Low Cost, Dual-Channel, 15V Pin Electronics Driver/Window Comparator
• Manufacturer: SEMTECH [Semtech Corporation]

Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Test Circuits:
AC Characteristics (continued)
Parameter
Comparator (Note 2)
Comparator Propagation Delay (Figure 10, Note 5)
Propagation Delay Matching (Note 5)
Propagation Delay Tempco (∆Tj = 25° C to 100° C)
Propagation Delay Dispersion vs. Overdrive (Note 7) (Figure 11)
Propagation Delay Dispersion vs. Common Mode (Figure 12, Notes 3, 7)
Comparator Bandwidth (Note 4)
Minimum Pulse Width
VINP Capacitance
TEST AND MEASUREMENT PRODUCTS
©
100mV to 1V Overdrive
1V to 2.5V Overdrive
2008 Semtech Corp. , Rev. 5, 3/7/08
DOUT
VINP
Driver AC specifications are with Tj = 65
VL = 0, VH = 3.0, into 20 inches of 50Ω transmission line unless otherwise noted.
Tj = 65
VEE = -5V unless otherwise noted.
V
Comparator bandwidth is the maximum frequency under which the comparator will switch with
CVH/CVL = 1.5V, VINP = 0 to 3V.
V
Measured with 33pF at end of transmission line. See “Optimizing Driver Waveforms” Section for
characteristics with different capacitive loads.
CVH, CVL are Calibrated Threshold Values (i.e., “Switching Point”).
VCC = 9V, DVEE = 0V, VEE = -5V.
VINP
VINP
Figure 5a. Driver Output/Comparator Input, Lumped Load
= 5V pp, 0.5V < V
= 5Vpp, VCVH,L = 2.5V.
o
C ± 3
o
C, CVH = 1.5, CVL = 1.5, VINP 0 - 3V @ 10MHz. VCC = 15V, VDD = 3.3V, DVEE = 0V,
C
LOAD
953Ω
DOUT
VINP
Measurement Point (V X )
CVH/L
Figure 5c. Driver Output/Comparator Input, 1KΩ Load
< .5V.
Oscilloscope
45.3
18nH
5 0 Ω
Ω
o
20" T-line
C ± 3
5 0 Ω
8
o
C, VCC = 15V, VDD = 3.3V, DVEE = 0V, VEE = -5V,
DOUT
VINP
953Ω
Measurement Point (V X )
Figure 5b. Driver Output/Comparator Input, 50Ω Load
|(Tpd+) - (Tpd-)|
Oscilloscope
∆Tpd/∆(VINP-
∆Tpd(cm)
∆Tpd/∆T
5 0 Ω
VCH(L))
Symbol
Tpd +/-
CVINP
45.3
Fmax
18nH
Ω
20" T-line
5 0 Ω
Min
100
3.5
Measurement Point (V X )
0.25
Typ
0.5
2.5
15
5
3
Oscilloscope
5 0 Ω
www.semtech.com
Max
6.5
1.5
3.5
0.5
0.5
20
5
E7802
Units
ps/° C
MHz
pF
ns
ns
ns
ns
ns
ns