- 您现在的位置：买卖IC网 > PDF目录98204 > TDA9115 (STMICROELECTRONICS) HORIZ/VERT DEFLECTION IC, PDIP32 PDF资料下载
参数资料
| 型号： | TDA9115 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 偏转 |
| 英文描述： | HORIZ/VERT DEFLECTION IC, PDIP32 |
| 封装： | SHRINK, PLASTIC, DIP-32 |
| 文件页数： | 22/45页 |
| 文件大小： | 675K |
| 代理商： | TDA9115 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页当前第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页
TDA9115
29/45
charge exponential is replaced by VVOB level,
which, under control of the CONTROLLER, cre-
ates a rapid falling edge and a flat part before be-
ginning of new ramp. Mean value of the waveform
output on pin VOut is adjusted by means of
VPOS
I2C bus control, its amplitude through
VSIZE I2C
bus control. Vertical moiré is superimposed.
The biasing voltage for external DC-coupled verti-
cal power amplifier is to be derived from VRefO
voltage provided on pin RefOut, using a resistor di-
vider, this to ensure the same temperature drift of
mean (DC) levels on both differential inputs and to
compensate for spread of VRefO value (and so
mean output value) between particular devices.
9.4.2 Vertical moiré
To blur the interaction of deflection lines with CRT
mask grid pitch that can generate moiré pattern,
the picture position is to be alternated at frame fre-
quency. For this purpose, a square waveform at
half-frame frequency is superimposed on the out-
put waveform’s DC value. Its amplitude is adjusta-
ble through
VMOIRE I2C bus control,.
Figure 11. Vertical section block diagram
9.5 EW DRIVE SECTION
The goal of the EW drive section is to provide, on
pin EWOut, a waveform which, used by an exter-
nal DC-coupled power stage, serves to compen-
sate for those geometry errors of the picture that
are symmetric versus vertical axis across the mid-
dle of the picture.
The waveform consists of an adjustable DC value,
corresponding to horizontal size, a parabola of 2nd
order for “pin cushion” correction and a linear for
“keystone” correction. All of them are adjustable
via I2C bus, see I2C BUS CONTROL REGISTER
MAP on page 20.
Refer to Figure 12, Figure 13 and to chapter TYP-
ICAL OUTPUT WAVEFORMS. The correction
waveforms have no effect in the vertical middle of
the screen (if the
VPOS control is adjusted to its
medium value). As they are summed, the resulting
waveform tends to reach its maximum span at top
and bottom of the picture. The voltage at the
EWOut is top and bottom limited (see parameter
VEW). According to Figure 13, especially the bot-
tom limitation seems to be critical for maximum
horizontal size (minimum DC). Actually it is not
critical since the parabola component must always
be applied. As all the components of the resulting
correction waveform are generated from the out-
2
Synchro
Polarity
Controller
Discharge
22
Sampling
Capacitance
S-correction
CCOR
C-correction
18
23
VVOB
sawtooth
REF
Charge current
Transconductance amplifier
(I2C)
SCOR (I2C)
20 VAGCCap
discharge
CCOR
VSIZE (I2C)
VMOIRE (I2C)
VPOS (I2C)
19
VOscF
VOut
VEHTIn
VCap
VSyn
OSC
Cap.
Q1
相关PDF资料 |
PDF描述 |
|---|---|
| TDA9116 | HORIZ/VERT DEFLECTION IC, PDIP32 |
| TDA9141N | COLOR SIGNAL DECODER, PDIP32 |
| TDA9170N | SPECIALTY CONSUMER CIRCUIT, PDIP32 |
| TDA9177N | SPECIALTY CONSUMER CIRCUIT, PDIP24 |
| TDA9201 | 1 CHANNEL, VIDEO PREAMPLIFIER, PDIP20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA9116 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR |
| TDA9118 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:行/场扫描处理电路 |
| TDA9141 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:PAL/NTSC/SECAM decoder/sync processor |
| TDA9143 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:I2C-bus controlled, alignment-free PAL/NTSC/SECAM decoder/sync processor |
| TDA9144 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:I2C-bus controlled, alignment-free PAL/NTSC/SECAM decoder/sync processor with PALplus helper demodulator |
发布紧急采购，3分钟左右您将得到回复。