參數(shù)資料
型號(hào)： MAX498
廠商： Maxim Integrated Products, Inc.
英文描述： High-Output RS-485 Transceiver 8-PDIP -40 to 85
中文描述： 四路-三路、SPDT、RGB開關(guān)，帶有250MHz視頻緩沖放大器
文件頁數(shù)： 3/16頁
文件大?。?/td> 155K
代理商： MAX498
TIMING CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, V
IN_ _
= 0V, R
L
= 150
, LE =
EN
=
CS
= 0V, T
A
= 0°C to +70°C. Typical values are at T
A
= +25°C, unless
otherwise noted.)
CONDITIONS
t
SU
A0/
EN
to
CS
Setup Time
M
Quad/Triple, S PDT, RGB S witc hes
with 250MHz Video Buffer Amplifiers
_______________________________________________________________________________________
3
f = 10MHz (Note 3)
EN
= 1, f = 10MHz (Note 4)
f = 10MHz (Note 2)
f = 3.58MHz (Note 5), R
L
= 150
f
C
= 3MHz
f = 10MHz
f = 100kHz
f = 100kHz
f = 3.58MHz (Note 5), R
L
= 150
CONDITIONS
degrees
0.06
Diff Phase
Differential Phase
%
0.03
Diff Gain
Differential Gain
dB
81
Off-Isolation
dB
62
All-Hostile Crosstalk
dB
90
Adjacent-Channel Crosstalk
dBc
-66
SFDR
Spurious-Free Dynamic Range
dB
-50
THD
Total Harmonic Distortion
nV/
√
Hz
pA/
√
Hz
7.8
2.6
Input Voltage Noise Density
Input Current Noise Density
UNITS
MHz
MIN
TYP
250
MAX
SYMBOL
BW
-3dB
PARAMETER
AC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5V, V
IN__
= 0V, R
L
= 100
, LE =
EN
=
CS
= 0V, T
A
= +25°C, unless otherwise noted.)
0.1%, V
OUT
= 4V step
ns
12
t
s
Settling Time
V
OUT
= 4V step
V/μs
1250
SR
Slew Rate
V
OUT
= ±2V
MHz
135
FPBW
Full-Power, -3dB Bandwidth
V
IN
≤
100mVp-p
MHz
70
±0.1dB Gain Flatness
V
IN
≤
100mVp-p
Small-Signal, -3dB Bandwidth
Note 2:
Test-channel input grounded through a 50
resistor. Adjacent channel driven to a 2Vp-p output with a 10MHz sine wave
(Figure 9).
Same as Note 2, except all channels but the test channel are driven to a 2Vp-p output with a 10MHz sine wave (Figure 9).
Test-channel input connected to a 2Vp-psine wave at 10MHz. The test channel’s output is measured with the outputs
disabled (Figure 9).
Input test signal is a 3.58MHz sine wave of 40IRE amplitude, superimposed on a 0IRE to 100IRE linear ramp (Figure 10).
Guaranteed by design.
V
INA
= +1V, V
INB
= -1V, delay from
CS
to 10% of V
OUT.
V
INA
= +1V, V
INB
= -1V, delay from
CS
to 10% of V
OUT.
Delay from
EN
to 90% of V
OUT.
Note 10:
Delay from
EN
to 10% of V
OUT.
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Positive
Negative
Positive
(Note 8)
(Note 7)
V
INA
= V
INB
= 0V
(Note 6)
LE = high (Note 6)
LE = high (Note 6)
70
50
10
ns
3
t
SW
Channel-Switching Time
ns
20
t
PD
Channel-Switching
Propagation Delay
ns
15
t
CS
CS
Pulse Width
ns
4
t
H
A0/
EN
to
CS
Hold Time
ns
8
mV
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Channel-Switching Transient
(Note 9)
(Note 10)
16
24
ns
ns
t
OFF
t
ON
Amplifier-Disable Time
Amplifier-Enable Time
Negative
150
V
INA
= V
INB
= 0V
mV
Enable/Disable Switching
Transient
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