STV6432 Datasheet, PDF (8/15 Pages) STMicroelectronics – Audio/Video Output Buffers for STB and DVD Devices

ELECTRICAL CHARACTERISTICS
STV6432
2.6 Chroma Section
T_AMB = 25° C, V_CCV = 5 V, V_CCB = 5 V, V_CCA = 9 V
R_GA = 600 Ω, R_LOUTA = 10 kΩ, R_GV = 75 Ω, R_LOUTV = 150 Ω, unless otherwise specified.
Table 7: Supply Data
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
V_DCIN DC Input Level
3
V
R_IN
Input Resistance
30
50
kΩ
C_IN
Input Capacitance
2
pF
V_IN
Max Input Signal
Gain = 6 dB
1.5
V_PP
DYN Dynamic Output Signal
Gain = 6 dB
3
V_PP
DC_OUT DC Output Voltage
2.2
V
CBW Chroma Bandwidth
V_IN = 1 V_PP at -3 dB Gain = 6 dB
8
MHz
Chroma Crosstalk Output
V_IN = 1 V_PP at 3.58 MHz on input
CCT_O Crosstalk Isolation between Output YIN_ENC
50
dB
Channels
R_LOAD = 150 Ω, Gain = 6 dB
Chroma Crosstalk Output
V_IN = 1 V_PP at 3.58 MHz on
CCT_O1
Crosstalk Isolation between Output
Channels when CVBSIN_ENC is
CVBSIN_ENC input;
Only one CVBS output loaded at
50
dB
driven
150 Ω; Gain = 6 dB
CCT_O4
Chroma Crosstalk Output
Crosstalk Isolation between Output
Channels when CVBSIN_ENC is
driven
V_IN = 1 V_PP at 3.58 MHz on
CVBSIN_ENC input;
All 4 CVBS outputs loaded at
150 Ω; Gain = 6 dB
44
dB
R_OUT Output Resistance
5
10
Ω
G_C5
5 dB Gain on Chroma Channels
V_IN = 1 V_PP
Pin 7 to GND or Logic “0”
4.5
5
5.5
dB
G_C6
6 dB Gain on Chroma Channels
V_IN = 1 V_PP, Pin 7 is open¹
5.5
6
6.5
dB
G_C7
7 dB Gain on Chroma Channels
V_IN = 1 V_PP; Pin 7 connected to
V_CCV (5 V) via 22 kΩ or to 3.3 V
6.5
7
7.5
dB
G_C8
8 dB Gain on Chroma Channels
V_IN = 1 V_PP Pin 7 to V_CCV (5 V)
7.5
8
8.5
dB
CToYdel Chroma to Luma Delay, Source Y/C V_IN = 1 V_PP at 3.58 MHz
20
ns
1. When Pin 7 is left open, its voltage is determined by an internal voltage divider consisting of 42 kΩ to V_CC
(5 V) and 18 kΩ to Ground
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