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參數(shù)資料
| 型號： | TDA8754HL/27/C1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | ADC |
| 英文描述： | 3-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP144 |
| 封裝： | 20 X 20 MM, 1.40 MM HEIGHT, LEAD FREE, PLASTIC, MS-026, SOT486-1, LQFP-144 |
| 文件頁數(shù)： | 18/57頁 |
| 文件大?。?/td> | 259K |
| 代理商： | TDA8754HL/27/C1 |
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TDA8754_7
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 07 — 3 May 2007
25 of 57
NXP Semiconductors
TDA8754
Triple 8-bit video ADC up to 270 Msample/s
9.4 Coarse registers (R, G and B)
The coarse gain of the AGC is controlled with 7 bits. The code gain can vary from
32 to 95; see Table 22.
::
:
086h
0
1
0
1
0
134
134/135
087h
0
1
0
1
135
135/136
Table 19.
Coding for clamp level and ADC output …continued
Value
OR8 OR7 OR6 OR5 OR5 OR3 OR2 OR1 OR0 Clamp
code
(decimal)
ADC output
(code transition)
OG8 OG7 OG6 OG5 OG4 OG3 OG2 OG1 OG0
OB8 OB7 OB6 OB5 OB4 OB3 OB2 OB1 OB0
Table 20.
Coarse gain registers (01h, 04h, 07h) bit allocation with reset
Register
7
6
5
4
3
2
1
0
COARSER (01h)
OR8
CR6
CR5
CR4
CR3
CR2
CR1
CR0
COARSEG (04h)
OG8
CG6
CG5
CG4
CG3
CG2
CG1
CG0
COARSEB (07h)
OB8
CB6
CB5
CB4
CB3
CB2
CB1
CB0
Reset
01000110
Table 21.
Coarse gain registers (01h, 04h, 07h) bit description
Bit
Symbol
Description
COARSER (address: 01h)
7
OR8
offset R channel; MSB bit of offset value
6 to 0
CR[6:0]
coarse gain of the AGC for R channel
COARSEG (address: 04h)
7
OG8
offset G channel; MSB bit of offset value
6 to 0
CG[6:0]
coarse gain of the AGC for G channel
COARSEB (address: 07h)
7
OB8
offset B channel; MSB bit of offset value
6 to 0
CB[6:0]
coarse gain of the AGC for B channel
Table 22.
Coarse register
Value
CR6 CR5 CR4 CR3 CR2 CR1 CR0 Vi (full-scale)
Gain ADC
CG6 CG5 CG4 CG3 CG2 CG1 CG0
CB6 CB5 CB4 CB3 CB2 CB1 CB0
32
0
1
0
1.000
33
0
1
0
1
0.992
1.008
::
:
63
0
1
0.753
1.328
64
1
0
0.746
1.340
65
1
0
1
0.738
1.355
::
:
69
1
0
1
0
1
0.706
1.416
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相關代理商/技術參數(shù) |
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| TDA8755 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:YUV 8-bit video low-power analog-to-digital interface |
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| TDA8757 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Triple 8-bit ADC 170 Msps |
| TDA8757HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Triple 8-bit ADC 170 Msps |
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