STV6888 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV6888' PDF : 46 Pages View PDF
STV6888
7.9 - MISCELLANEOUS
VCC = 12V, Tamb = 25°C
Symbol
Parameter
Test Conditions
Value
Units
Min. Typ. Max.
Vertical blanking and horizontal lock indication composite output HLckVBk
ISinkLckBk
Sink current to HLckVBk pin
(39)
100
µA
V.blank
H.lock
No
Yes
0.1
V
VOLckBk
Output voltage on HLckVBk output
Yes
Yes
1.1
V
No
No
5
V
Yes
No
6
V
Horizontal moiré canceller
HMoiMode=0 (internal)
∆----T----H----(--H-----–----m-----o---i--r--e---)
TH
Modulation of TH by H-moiré function
HMOIRE (Sad02):
x0000000b
x1111111b
0
%
0.04
%
HMoiMode=1 (external)
Rext=10kΩ
VHMoiré
H-moiré pulse amplitude on HMoiré pin HMOIRE (Sad02):
x0000000b
0.1
V
x1111111b
2.1
V
Vertical moiré canceller
VV-moiré
Amplitude of modulation of V-drive sig-
nal on VOut pin by vertical moiré.
VMOIRE (Sad0Bh):
x0000000b
x1111111b
0
mV
3
mV
Protection functions
VThrXRay
Input threshold on XRay input(40)
tXRayDelay
Delay time between XRay detection
event and protection action
7.65 7.9 8.2
V
2TH
VCCEn
VraCmCpv-aulpu(e41f)or start of operation at VCC
8.5
V
VCCDis
rVaCmCpv-adlouwenf(o4r1)stop of operation at VCC
Control voltages on HPosF pin for Soft start/stop operation(18)(42)
6.5
V
VHOn
Threshold for start/stop of H-drive sig-
nal
1
V
VBOn
Threshold for start/stop of B-drive sig-
nal
1.7
V
VHBNorm f
Threshold for full operational duty cycle
of H-drive and B-drive signals
2.4
VHPos
Normal operation
Voltage onHPosF pin as function of ad- HPOS (Sad01)
justment of HPOS register
0000000xb
1111111xb
4.0
V
2.8
V
Note 39: Current sunk by the pin if the external voltage is higher than one the circuit tries to force.
Note 40: The threshold is equal to actual VRefO.
Note
41:
In the
HOut,
regions of VCC
VOut and BOut
where the device's operation is disabled, the H-drive,
pins, resp., are inhibited, the I2C Bus does not accept
V-drive and B+-drive signals on
any data and the XRayAlarm flag
is reset. Also see Figure 15
Note 42: See Figure 10
17/47
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