TDA4884 Datasheet, PDF (10/28 Pages) NXP Semiconductors – Advanced monitor video controller for OSD

Philips Semiconductors
Three gain control video pre-amplifier for OSD
Product specification
TDA4884
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Current outputs (pins 20, 17 and 14); note 13
I_o(b-w)
output current (black-to-white
−
value)
with peaking
−
V_20-19;
start of HF-saturation voltage of I_o = 50 mA
−
V_17-16; V_14-13 output transistors
I_o = 100 mA
−
I_bl(SO)
output current during switch-off
V_i(HBL) = V_P; R_O = 33 Ω
0
Frequency response at voltage outputs; note 14
∆G_(f)
gain decrease by frequency
70 MHz; single channel
−
response at pins 19, 16 and 13
t_r(O)
rise time at voltage output (pins 19, 10% to 90% amplitude;
−
16 and 13)
input rise time = 1 ns
dV_O
overshoot of output signal pulse single channel;
−
related to actual output pulse
input rise time = 2.5 ns;
amplitude
V_i(b-w) = 0.7 V;
V_i(CC) = 4.3 V; pins 3, 1
and 11 open-circuit
50
−
mA
−
100 mA
−
2.0
V
−
2.2
V
20
900 µA
1.3
3
dB
4.1
5.0
ns
4
8
%
Crosstalk at voltage outputs with speed up circuit; note 15
α_cr(tr)
transient crosstalk
−
−
−20 dB
Threshold voltages for clamping, blanking and switch-off (pins 9 and 10); note 16
V_i(HBL)
input voltage at pin HBL
threshold for horizontal blanking
(blanking, output clamping)
1.2
1.4
1.6
V
threshold for switch-off (blanking,
minimum black level, no output
clamping)
5.8
6.5
6.8
V
R_i(HBL)
V_i(CL)
input resistance
input voltage at pin CL
threshold for vertical blanking
(blanking, no input clamping)
against ground
note 17
50
80
110 kΩ
1.2
1.4
1.6
V
threshold for clamping (input
clamping, no blanking)
note 17
2.6
3.0
3.5
V
I_i(CL)
t_r(CL)
t_f(CL)
t_w(clamp)
threshold for test mode (no
clamping, no blanking, for
V_bl(TST) see above)
current
rise time for clamping pulse
fall time for clamping pulse
width of clamping pulse
for test mode also
V_P − 1 −
V_P
V_i(HBL) > 6.8 V (switch-off)
V_i(CL) < V_P − 1 V
V_i(CL) ≥ V_P − 1 V
note 17
note 17
−3
−1
−
−
100 −
−
−
75
−
−
75
0.6
−
−
V
µA
µA
ns/V
ns/V
µs
1997 Nov 26
10