SAA7124 Datasheet, PDF (31/44 Pages) NXP Semiconductors – Digital Video Encoder ECO-DENC

Philips Semiconductors
Digital Video Encoder (ECO-DENC)
Preliminary specification
SAA7124; SAA7125
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
Crystal oscillator
f_n
nominal frequency (usually 27 MHz)
∆f/f_n
permissible deviation of nominal frequency
CRYSTAL SPECIFICATION
T_amb
C_L
R_S
C₁
C₀
operating ambient temperature
load capacitance
series resistance
motional capacitance (typical)
parallel capacitance (typical)
Data and reference signal output timing
C_L
output load capacitance
t_h
output hold time
t_d
output delay time
CHROMA, Y, CVBS and RGB outputs
V_o(p-p)
R_int
R_L
B
output signal voltage (peak-to-peak value)
internal serial resistance
output load resistance
output signal bandwidth of DACs
ILE
LF integral linearity error of DACs
DLE
LF differential linearity error of DACs
3rd harmonic
note 5
note 6
−3 dB
−
30
−50
+50
MHz
10^−6
0
70
°C
8
−
pF
−
80
Ω
1.5 − 20% 1.5 + 20% fF
3.5 − 20% 3.5 + 20% pF
7.5
40
pF
4
−
ns
−
25
ns
1.9
2.1
18
35
80
−
10
−
−
±4
−
±1
V
Ω
Ω
MHz
LSB
LSB
Notes
1. At maximum supply voltage with highly active input signals.
2. The levels have to be measured with load circuits of 1.2 kΩ to 3.0 V (standard TTL load) and C_L = 25 pF.
3. The data is for both input and output direction.
4. With LLC in input mode. In output mode, with a crystal connected to XTALO/XTALI duty factor is typically 50%.
5. If an internal oscillator is used, crystal deviation of nominal frequency is directly proportional to the deviation of
subcarrier frequency and line/field frequency.
6. For full digital range, without load, V_DDA = 5.0 V. The typical voltage swing is 2.0 V, the typical minimum output
voltage (digital zero at DAC) is 0.2 V.
1996 Nov 07
31