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參數(shù)資料
| 型號(hào)： | TDA8757 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Triple 8-bit ADC 170 Msps |
| 中文描述： | 三路8位ADC為170 MSPS |
| 文件頁數(shù)： | 12/37頁 |
| 文件大?。?/td> | 895K |
| 代理商： | TDA8757 |
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Philips Semiconductors
TDA8757
Triple 8-bit ADC 170 Msps
Preliminary data
Rev. 07 — 28 February 2002
12 of 37
9397 750 09457
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
If this function is not used, pin IN
SOG
should be connected to the analog power
supply. In this event, pin SOG
O
is at LOW-level TTL.
8.2 Clamps
Three independent parallel clamping circuits are used to clamp the video input
signals on several black levels. The clamping levels may be set from
63.5 to +64 LSBs (RGB) and from +120 to +136 LSBs in steps of
1
2
LSB (YUV).
They are controlled by changing the values in three 8-bit registers: OFFSETR,
OFFSETG and OFFSETB (see
Table 5
). Each clamp must be able to correct an
offset from
±
100 mV to
±
10 mV within 300 ns, and correct the total offset in 10 lines.
The clamping is done using the following principle: On the incoming of a TTL positive
going pulse supplied on pin CLP, three external capacitors are loaded independently
by the device in order to change the voltage level of each analog RGB input. The
capacitors are connected to pins CLP
R
, CLP
G
and CLP
B
.
Fig 5.
Sync level diagram.
blank level
150 mV comparison level
set by I
2
C-bus bit Slevel = 0
blank level
80 mV comparison level
set by I
C-bus bit Slevel = 1
150 mV
to
300 mV
300 mV
to
600 mV
005aaa009
Fig 6.
Clamp definition.
video signal
CLP
Clamp
=
+
128
Clamp
=
+
64
Clamp
=
63.5
Clamp
= 0
0
constant level
255
constant level
FCE698
clamp
programming
ADC
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| TDA8757HL | Triple 8-bit ADC 170 Msps |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA8757HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Triple 8-bit ADC 170 Msps |
| TDA8758 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:YC 8-bit low-power analog-to-digital video interface |
| TDA8758G | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:YC 8-bit low-power analog-to-digital video interface |
| TDA8759HV/8/C1 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 3X8-BITS VIDEO ADC 110MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| TDA8759HV/8/C1,551 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 3X8-BITS VIDEO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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