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參數資料
| 型號： | 935069850112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP52 |
| 封裝： | 0.600 INCH, PLASTIC, SOT-247-1, SDIP-52 |
| 文件頁數： | 21/47頁 |
| 文件大小： | 250K |
| 代理商： | 935069850112 |
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1996 Jan 26
28
Philips Semiconductors
Objective specication
I2C-bus controlled PAL/NTSC TV processors
TDA8376; TDA8376A
Notes
1. Signal with negative-going sync. Amplitude includes sync pulse amplitude.
2. This parameter is not tested during production but is guaranteed by the design and qualified by means of matrix
batches which are made in the pilot production period.
3. This parameter is measured at nominal settings of the various controls.
4. Indicated is a signal for a colour bar with 75% saturation (chrominance : burst ratio = 2.2 : 1).
5. The RGB1 inputs (pins 14 to 17) have priority over the RGB2 inputs (pins 23 to 25).
6. Nominal contrast is specified with the DAC in position 20H. Nominal saturation as maximum
10 dB. In the nominal
brightness setting the black level at the outputs is identical to the level of the black-current measuring pulses.
7. This parameter is not tested during production and is just given as application information for the designer of the
television receiver.
8. The
3 dB bandwidth of the circuit can be calculated by means of the following equation:
9. Valid for a signal amplitude on the Y-input of 0.7 V black-to-white (100 IRE) with a rise time (10% to 90%) of 70 ns
and the video switch in the Y/C mode. During production the peaking function is not tested by measuring the
overshoots but by measuring the frequency response of the Y output.
10. For video signals with a black level which deviates from the back-porch blanking level the signal is ‘stretched’ to the
blanking level. The amount of correction depends on the IRE value of the signal (see Fig.10). The black level is
detected by the capacitor connected to pin 2. The black level stretcher can be made inoperative by connecting pin 2
to the positive supply line. The values given are valid only when the luminance input signal (pins 7, 9 and 13) has a
value of 1 V (p-p).
11. The slicing level is independent of sync pulse amplitude. The given percentage is the distance between the slicing
level and the black level (back porch).
BEAM CURRENT LIMITING (PIN 22); note 23
VCR
contrast reduction starting voltage
3.5
V
VdiffCR
voltage difference for full contrast
reduction
2.0
V
VBR
brightness reduction starting voltage
2.5
V
VdiffBR
voltage difference for full brightness
reduction
1.0
V
Vbias
internal bias voltage
4.5
V
Ich(int)
internal charge current
25
A
Idisch
discharge current due to ‘peak-white
limiting’
200
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
f
3dB
–
f
osc 1
1
2Q
--------
–
=
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