TDA8501 Datasheet, PDF (17/30 Pages) NXP Semiconductors – PAL/NTSC encoder

Philips Semiconductors
PAL/NTSC encoder
Preliminary specification
TDA8501
SYMBOL
PARAMETER
CONDITIONS
NOTCH (pin 18)
R_O
output resistance
V_CC
DC voltage level
I_sink
maximum sink current
Chrominance output (pin 14)
I_sink
I_source
R_O
∆V_DC
maximum sink current
maximum source current
output resistance
variation of DC voltage level
when chrominance signal is
blanked and chrominance signal is
not blanked
PAL mode; pin 17 = 0 V
V_O
chrominance output voltage
(peak-to-peak) amplitude burst
ratio: chrominance
(75% RED)/burst
NTSC mode; pin 17 = 5 V
V_O
chrominance output voltage
(peak-to-peak) amplitude burst
ratio: chrominance
(75% RED)/burst
carrier suppression when
input-signals are 0 V
0 dB = 1330 mV
(peak-to-peak)
phase accuracy (difference
between 0 and 90 degree carriers)
LPF
Low-pass filters
see Figs 3 and 4
BPF
Band-pass filters
see Figs 5 and 6
V_n
noise level (RMS value)
BP
burst phase; 0 degrees = phase U carrier
PAL mode
NTSC mode
α
Y + SYNC cross talk
(0 to 6 MHz)
0 dB = 1400 mV
(peak-to-peak)
MIN.
TYP. MAX. UNIT
1750
−
350
2000
2.5
−
2500 Ω
−
V
−
µA
700
−
−
µA
1000
−
−
µA
−
120
−
Ω
−
−
5
mV
480
600
720 mV
2.1
2.2
2.3
460
570
680 mV
2.1
2.2
2.3
−
37
−
dB
−
−
2
degrees
−
−
4
mV
−
±135
−
degrees
−
180
−
degrees
−
−
−60 dB
April 1993
17