Manual

MAX9670/MAX9671
Low-Power Audio/Video Switch with Audio
Volume Control for Dual SCART Connectors
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V
12
= 12V, V
VID
= V
AUD
= 3.3V, V
GNDVID
= V
EP
= 0V, no load, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Resistance V
IN
= -0.707V to +0.707V 10 MΩ
Input Bias Current V
IN
= 0, T
A
= +25°C 500 nA
Input Signal Amplitude f = 1kHz, THD < 1% 0.5 V
RMS
Output DC Level No input signal, V
IN
grounded -4 +4 mV
DC 75 100
Power-Supply Rejection Ratio
f = 1kHz 90
dB
Signal-to-Noise Ratio f = 1kHz, 0.25V
RMS
input, 20Hz to 20kHz 96 dB
R
L
= 3.33kΩ, f = 1kHz, 0.25V
RMS
input 0.002
Total Harmonic Distortion Plus
Noise
R
L
= 3.33kΩ, f = 1kHz, 0.5V
RMS
input 0.001
%
Output Impedance f = 1kHz 0.4 Ω
Volume Control Attenuation Step
Programmable gain to TV SCART volume
control from -62dB to 0
2dB
Volume Control Minimum
Attenuation
0dB
Volume Control Maximum
Attenuation
62 dB
Mute Suppression f = 1kHz, 0.25V
RMS
input 110 dB
Audio Crosstalk f = 1kHz, 0.25V
RMS
input 100 dB
VIDEO-TO-AUDIO INTERACTION
Crosstalk
Video input: f = 15kHz, 1V
P-P
signal
Audio input: f = 15kHz, 0.5V
RMS
signal
92 dB
CHARGE PUMP
Switching Frequency 570 kHz
FAST SWITCHING
Input Low 0.4 V
Input High Level 1V
Input Current T
A
= +25°C 10 µA
Output Low Voltage I
OL
= 0.5mA 0.1 V
Output High Voltage I
OH
= 0.5mA
V
VID
-
0.1
V
Output Resistance 7 Ω
Rise Time 143Ω to GNDVID 12 ns
Fall Time 143Ω to GNDVID 10 ns
SLOW SWITCHING
Input Low Voltage 2V
Input Medium Voltage 4.5 7 V
Input High Voltage 9.5 V