TDA4681 Datasheet, PDF (12/28 Pages) NXP Semiconductors – Video processor with automatic cut-off and white level control

Philips Semiconductors
Video processor with automatic cut-off
and white level control
Product specification
TDA4681
CHARACTERISTICS
All voltages are measured in test circuit of Fig.10 with respect to GND (pin 9); V_P = 8.0 V; T_amb = 25 °C; nominal signal
amplitudes (black-to-white) at output pins 24, 22 and 20; nominal settings of brightness, contrast, saturation and white
level control; without beam current or peak drive limiting; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX. UNIT
Supply (pin 5)
V_P
supply voltage
7.2
I_P
supply current
−
Colour difference inputs [−(B − Y): pin 6; −(R − Y): pin 7]
V_6(p-p)
V_7(p-p)
V_6,7
I_6,7
−(B − Y) input (peak-to-peak value)
−(R − Y) signal (peak-to-peak value)
internal DC bias voltage
input current
notes 1 and 2
−
notes 1 and 2
−
at black level clamping −
during line scan
−
at black level clamping 100
R_6,7
AC input resistance
10
Luminance/sync (VBS; Y: pin 8)
V_i(p-p)
luminance input voltage at pin 8
note 2
−
(peak-to-peak value)
V_8(bias)
I₈
internal DC bias voltage
input current
at black level clamping −
during line scan
−
at black level clamping 100
R₈
AC input resistance
10
RGB input 1 (R₁: pin 10; G₁: pin 11; B₁: pin 12)
V_i(p-p)
input voltage at pins 10, 11 and 12 note 2
−
(peak-to-peak value)
V_{10/11/12(bias)} internal DC bias voltage
I_10/11/12 input current
at black level clamping −
during line scan
−
at black level clamping 100
R_10/11/12
AC input resistance
10
RGB input 2 (R₂: pin 2, G₂: pin 3, B₂: pin 4)
V_i(p-p)
input voltage at pins 2, 3 and 4
note 2
−
(peak-to-peak value)
V_2/3/4
I_2/3/4
internal DC bias voltage
input current
at black level clamping −
during line scan
−
at black level clamping 100
R_2/3/4
AC input resistance
10
8.0
85
1.33
1.05
3.1
−
−
−
0.45
3.1
−
−
−
0.7
5.4
−
−
−
0.7
5.4
−
−
−
8.8
V
110
mA
−
V
−
V
−
V
0.15
µA
−
µA
−
MΩ
−
V
−
V
0.15
µA
−
µA
−
MΩ
−
V
−
V
0.15
µA
−
µA
−
MΩ
−
V
−
V
0.15
µA
−
µA
−
MΩ
1997 Mar 04
12