TDA4686 Datasheet, PDF (13/28 Pages) NXP Semiconductors – Video processor with automatic cut-off control

Philips Semiconductors
Video processor with automatic cut-off control
Product specification
TDA4686
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX. UNIT
RGB outputs (pins 24, 22 and 20; positive going output signals; peak drive limiter set = 3FH); note 4
V_o(b-w)
nominal output signals
(black-to-white value)
−
2.0
−
V
maximum output signals
(black-to-white value)
3.0
−
−
V
∆V_o
spread between RGB output signals
V_o
minimum output voltages
maximum output voltages
−
−
−
−
6.8
−
10
%
0.8
V
−
V
V_24,22,20
voltage of cut-off measurement line
equivalent to voltage during
ultra-black
output clamping;
BCOF = 1
2.3
2.5
2.7
V
I_int
internal current sources
R_o
output resistance
−
5.0
−
mA
−
20
−
Ω
Frequency response (measured with 10 MΩ, 30 pF external load)
f_res
frequency response of Y path
f = 14 MHz
(from pin 8 to pins 24, 22 and 20)
−
−
3
dB
frequency response of CD path
(from pins 7 to 24 and 6 to 20)
f = 12 MHz
−
−
3
dB
frequency response of RGB₁ path
(from pins 10 to 24, 11 to 22 and
12 to 20)
f = 22 MHz
−
−
3
dB
frequency response of RGB₂ path
(from pins 2 to 24, 3 to 22 and
4 to 20)
f = 22 MHz
−
−
3
dB
Sandcastle pulse detector (pin 14)
CONTROL BIT SC5 = 0; 3-LEVEL; notes 5 and 6
V₁₄
sandcastle pulse voltage
for horizontal and vertical blanking
pulses
for horizontal pulses (line count)
for burst key pulses (clamping)
CONTROL BIT SC5 = 1; 2-LEVEL; notes 5 and 6
V₁₄
sandcastle pulse voltage
for horizontal and vertical blanking
pulses
for burst key pulses
GENERAL
I₁₄
output current
t_d
leading edge delay of the clamping
pulse
V₁₄ = 0 V
2.0
2.5
4.0
4.5
7.6
−
3.0
V
5.0
V
V_P + 5.8 V
2.0
2.5
4.0
4.5
−
−
−
0
3.0
V
V_P + 5.8 V
−100 µA
−
µs
1997 Jun 23
13