Manual
MAX9670/MAX9671
Low-Power Audio/Video Switch with Audio
Volume Control for Dual SCART Connectors
4 _______________________________________________________________________________________
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
AC CHARACTERISTICS
Filter Passband Flatness V
OUT
= 2V
P-P
, f = 100kHz to 5.5MHz -1 dB
f = 9.5MHz 3
f = 27MHz 40
Filter Attenuation
V
OUT
= 2V
P-P
,
attenuation is
referred to 100kHz
f = 54MHz 55
dB
Slew Rate V
OUT
= 2V
P-P
, no filter in video path 60 V/µs
Settling Time V
OUT
= 2V
P-P
, settle to 0.1% (Note 3) 400 ns
Differential Gain DG 5-step modulated staircase, f = 4.43MHz 0.15 %
Differential Phase DP 5-step modulated staircase, f = 4.43MHz 0.5 Degrees
2T Pulse-to-Bar K Rating
2T = 200ns, bar time is 18µs, the beginning
2.5% and the ending 2.5% of the bar time is
ignored
0.3 K%
2T Pulse Response 2T = 200ns 0.2 K%
2T Bar Response
2T = 200ns, bar time is 18µs, the beginning
2.5% and the ending 2.5% of the bar time is
ignored
0.2 K%
Nonlinearity 5-step staircase 0.1 %
Group Delay Distortion 100kHz ≤ f ≤ 5MHz, outputs are 2V
P-P
11 ns
Glitch Impulse Caused by
Charge-Pump Switching
Measured at outputs 100 pV-s
Peak Signal to RMS Noise 100kHz ≤ f ≤ 5MHz 70 dB
Power-Supply Rejection Ratio f = 100kHz, 100mV
P-P
47 dB
Output Impedance f = 5MHz 2 Ω
Video Crosstalk f = 4.43MHz -80 dB
Reverse Isolation
VCR SCART inputs to encoder inputs,
full-power mode with VCR being looped
through to TV, f = 4.43MHz
92 dB
Pulldown Resistance
Enable VCR_R/C_OUT pulldown through
I
2
C interface
4.4 7.5 Ω
AUDIO CHARACTERISTICS
Voltage Gain V
IN
= -0.707V to +0.707V 3.95 4 4.05 V/V
Gain Mismatch V
IN
= -0.707V to +0.707V -1.5 +1.5 %
Flatness f = 20Hz to 20kHz, 0.25V
RMS
input 0.006 dB
Frequency Bandwidth
0.25V
RMS
input, frequency where output is
-3dB referenced to 1kHz
230 kHz
Capacitive Drive
No sustained oscillations; 75Ω series
resistor on output
300 pF