MAX458 查看數據表（PDF） - Maxim Integrated
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MAX458 Datasheet PDF : 16 Pages
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8x4 Video Crosspoint Switches with Buffers
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V, VEE = -5V, -2V ≤ VIN ≤ +2V, output load resistor (RL) = 150Ω, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Logic Input High Current
Logic Input Low Current
Logic Output High Voltage
Logic Output Low Voltage
DYNAMIC SPECIFICATIONS
IIH
IIL
VOH
VOL
(Note 3)
(Note 3)
ISOURCE = 400µA (Note 5)
ISINK = 1.6mA (Note 5)
10
µA
10
µA
4.0
V
0.5
V
Differential Gain Error (Note 6)
Differential Phase Error (Note 6)
MAX458
DG
MAX459
MAX458
DG
MAX459
0.01
%
0.13
0.05
degrees
0.14
Slew Rate
Bandwidth (-3dB)
Input Noise Density
Settling Time
Amplifier Disable Time
Amplifier Enable Time
Channel Switching Time
Channel Switching Propagation Delay
Switching Transient Glitch
Adjacent Channel Crosstalk
SR
BW
en
tS
tAOFF
tAON
tCSW
tCPD
MAX458
Positive transition
Negative transition
MAX459
Positive transition
Negative transition
MAX458, RL = 75Ω
MAX459, RL = 150Ω
f = 10kHz
To 0.1% of final value (Note 7)
See Typical Operating Characteristics
(Note 8)
200
150
V/µs
300
250
100
MHz
90
20
nV/√Hz
40
ns
100
ns
120
ns
60
ns
50
ns
100
mVp-p
-65
dB
Non-Adjacent Channel Crosstalk
(Note 9)
-65
dB
All-Hostile Crosstalk
All-Hostile Off Isolation
(Note 10)
(Note 11)
-55
dB
-60
dB
Note 2: Defined as the DC offset shift when switching between input channels for a given output.
Note 3:
Note 4:
Note 5:
Note 6:
Voltage Gain Accuracy for MAX458 calculated as —(V—O——U—T—-—V—I—N—)–—@——(V—I—N—=——+—2—V—)—-4—(V—V—O—U—T—-—V——IN—)—@——(—V—IN——=——-2—V—)
Voltage Gain Accuracy for MAX459 calculated as —(V—O——U—T/—2—-——V—IN—)—@——(—V—IN——=——+—1—V—)2—-V—(V—O——U—T—/2——- —V—IN—)—@——(—V—IN——=——-1—V—)
All logic levels are guaranteed over the range of VS = ±4.75V to ±5.25V.
Differential phase and gain measured with a 40 IRE (285.7mV), 3.58MHz sine wave superimposed on a linear ramp of 0 IRE
to 100 IRE (714.3mV). “The IRE scale is a linear scale for measuring, in arbitrary IRE units, the relative amplitudes of the var-
ious components of a television signal” (from the “Television Engineering Handbook”, edited by K. Blair Benson, McGraw
Hill). This system defines 100 IRE as reference white, 0 IRE as the blanking level, and -40 IRE as the sync peak. The equip-
ment used for the test signal generated 714.3mV (100 IRE) as reference white and -285.7mV (-40 IRE) as sync. The modu-
lation used was 285.7mV (40 IRE), which conforms to the EIA color signal standards.
Note 7: For MAX458, step input from +2V to 0V; for MAX459, step input from +1V to 0V. All unused channels grounded and all
unused amplifiers disabled.
Note 8: Test input channel programmed to an output and grounded through a 75Ω resistor. Adjacent input is programmed to an
adjacent output and driven by a 10MHz, 4Vp-p sine wave.
Note 9: Same as Note 6 above, except driven input and output are not adjacent to test input/output.
Note 10: All inputs but the test input are driven by a 10MHz 4Vp-p sine wave. All outputs except the test output are connected to driven inputs.
Note 11: Same as Note 9 above, except with test channel programmed off.
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