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| 型號： | TZA1038HW,118 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 20/45頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DVD SIGNAL PROC 48-HTQFP |
| 標準包裝： | 2,500 |
| 系列： | * |
| 類型： | * |
| 應用： | * |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP 裸露焊盤 |
| 供應商設備封裝： | 48-HTQFP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | 935273843118 TZA1038HW-T TZA1038HW-T-ND |
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2003 Sep 03
27
Philips Semiconductors
Product specication
High speed advanced analog DVD signal
processor and laser supply
TZA1038HW
Switches SW-A to SW-D can be programmed 1,
1or0
(respectively pass, invert or not pass the signal) for each
channel. In this way the data can be read by any
combination of diode inputs.
The first gain stage also carries the signals for DPD
tracking. Therefore this stage will also be active when
RFSUM input and DPD is selected. The DC offset
cancellation is also active in this situation but left and right
channels are controlled from a single DAC. Also in this
situation, the A to D and RFSUM inputs are used
simultaneously.
Control of the DC offset DACs can be chosen to be from
the same register or from two independent registers
(registers 4 and 5).
7.5.2
DATA SIGNAL PATH THROUGH INPUT PINS RFSUMP
AND
RFSUMN
With bit RFSUM = 1:
(DVDRFP DVDRFN)=
ARFSUM × [RFSUMP RFSUMN RFOFFSS]
RFP = RFREF + 0.5
× A3 × (DVDRFP DVDRFN)
RFN = RFREF
0.5 × A3 × (DVDRFP DVDRFN)
Thus:
RFdif =ARFSUM × [RFSUMP RFSUMN RFOFFSS]
7.5.3
HF FILTERING
The differential HF signal from the G3 stage is sent to a
filter section that consists of an equalizer and a noise filter,
which are controlled by bits BWRF, RFKEQ, RFEQEN and
RFNFEN. The equalizer has a transfer function H1 (s)
which is modelled after a target transfer function He (s):
This represents a third-order equi-ripple phase filter with a
good delay response. The boost factor k is programmable
via the serial bus control bit RFKEQ. The corner
frequency
ω
0RF =2πf0RF is programmable via control
parameter bit BWRF. The equalizer is switched on with
control bit RFEQEN.
The noise filter has a transfer function H2 (s) which is
modelled after a third-order Butterworth low-pass filter with
target transfer function Hn (s):
The corner frequency
ω
0RF is equal to that of the equalizer
filter. The noise filter is switched on with bit RFNFEN.
7.5.4
FOCUS SIGNALS
Focus servo signals:
OA =
× A
LFC × (A OPUREF + LFOFFS COFFSA)
+
β× F
OFFS
OB =
× ALFC × (B OPUREF + LFOFFS COFFSB)
+(1
β) × FOFFS
OC =
× ALFC × (C OPUREF + LFOFFS COFFSC)
+
β× FOFFS
OD =
× ALFC × (D OPUREF + LFOFFS COFFSD)
+(1
β) × F
OFFS
The parameter
β can be programmed via the serial bus.
The focus offset DAC can be switched on with the control
bit FOFFSEN.
7.5.5
RADIAL SIGNALS
7.5.5.1
DPD signals (DVD-ROM mode) with no
drop-out concealment
DPD tracking can be activated with bits RT_mode[2:0] of
register 1. Input signals are taken from the diode inputs
A to D, through the input stage G1 and the DC offset
cancellation DAC. When bit RFSUM = 0, the input stage is
also used for the RF signal. When bit RFSUM = 1, the
setting for G1 and DC offset control can be independent of
the setting for the data signal which goes through RFSUM.
S1DPD =I(FS)(DPD) ×
+IREFRAD
S2DPD = I(FS)(DPD) ×
+IREFRAD
is the time difference between the two input signals,
relative to the period time TP of the input signal. I(FS)(DPD)
is the full scale range.
H
e s
()
1k
+
s
2
ω
0RF
2
---------------
×
1
s
2
ω
0RF
2
----------------
α
s
ω
0RF
------------
×
++
-------------------------------------------------------
1
τ
s
ω
0RF
------------
×
+
-------------------------------
×
=
H
n s
()
1
s
2
ω
0RF
2
---------------
s
ω
0RF
------------
++
---------------------------------------------
1
s
ω
0RF
------------
+
----------------------
×
=
1
R
LFC
-------------
1
R
LFC
-------------
1
R
LFC
-------------
1
R
LFC
-------------
t
T
P
------
t
T
P
------
t
T
P
------
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相關代理商/技術參數(shù) |
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|---|---|
| TZA1038HW-T | 功能描述:音頻 DSP DVDALASLITE AUTO RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TZ-A103SS | 制造商:Panasonic Industrial Company 功能描述:SIGNAL SENDER |
| TZA1045 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Photodiode and amplifier IC for CD and DVD applications |
| TZA1045TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Photodiode and amplifier IC for CD and DVD applications |
| TZA1046 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Photodiode and amplifier IC for CD and DVD applications |
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