TDA4885 Datasheet, PDF (11/56 Pages) NXP Semiconductors – 150 MHz video controller with I2C-bus

Philips Semiconductors
150 MHz video controller with I²C-bus
Product specification
TDA4885
10 CHARACTERISTICS
All voltages and currents are measured in test circuit of Fig.19; all voltages are measured with respect to GND (pins 9,
28, 23 and 18); V_P = V_{P1, 2, 3} = 8 V (pins 7, 29, 24 and 19); T_amb = 25 °C; nominal input signals [0.7 V (peak-to-peak
value) at pins 6, 8 and 10]; nominal colour signals at signal outputs (pins 30, 25 and 20); reference black level (V_rbl)
approximately 0.7 V; nominal settings for brightness and contrast; maximum settings for OSD contrast and gain; no
limiting of contrast (V₁₇ = 5 V); no OSD fast blanking (pin 1 connected to ground); no gain modulation (pins 12, 13
and 14 connected to ground); notes 1 to 3; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply
V_P
I_P
V_{P1, 2, 3}
I_{P1, 2, 3}
V_PSO
supply voltage (pin 7)
7.6
8.0 8.8
V
supply current (pin 7)
note 4
−
20 25
mA
channel supply voltage
(pins 29, 24 and 19)
7.6
8.0 8.8
V
channel supply current
signal outputs (pins 30, 25
−
(pins 29, 24 and 19)
and 20) open-circuit;
V_rbl = 0.7 V; note 5
supply voltage for signal switch signal outputs switched to
−
off (threshold at pin 7)
switch-off voltage; note 1
40 45
mA
−
7.2
V
Clamping and blanking pulses (pins 5 and 11)
V₅
input clamping and vertical
note 6
blanking input signal
no blanking, no input
−0.1
clamping
blanking, no input clamping 1.6
input clamping, no blanking 3.5
I₅
input current
V₅ = 1 V; note 7
−1.5
pin 5 grounded; note 7
−80
V₅ = −0.1 V; note 7
−250
t_r/f5
rise/fall time for input clamping note 6; see Fig.7
−
pulse, disable for blanking
t_W5
width of input clamping pulse
0.6
t_dl5
delay between leading edges V₁₁ < 0.8 V; input pulse with −
of vertical blanking input pulse 50 ns/V; threshold for rising
and internal blanking pulse
input pulse V₅ = 1.4 V;
threshold after input clamping
pulse V₅ = 3 V; see Fig.7
t_dt5
delay between trailing edges of V₁₁ < 0.8 V; input pulse with −
vertical blanking input pulse 50 ns/V; threshold V₅ = 1.4 V;
and internal blanking pulse
see Fig.7
V₁₁
output clamping and blanking note 8
input signal
no blanking, no output
−0.1
clamping
blanking, no output clamping 2.0
blanking, output clamping 3.5
−
+1.2
−
−
−0.2
−60
−200
−
2.6
V_P
−0.05
−30
−100
75
−
−
270 −
115 −
−
+0.8
−
2.6
−
V_P
V
V
V
µA
µA
µA
ns/V
µs
ns
ns
V
V
V
1997 Nov 25
11