- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄382377 > PCA3006TPB Amplifier. Other PDF資料下載
參數(shù)資料
| 型號(hào)： | PCA3006TPB |
| 英文描述： | Amplifier. Other |
| 中文描述： | 放大器。其他 |
| 文件頁(yè)數(shù)： | 3/9頁(yè) |
| 文件大?。?/td> | 133K |
| 代理商： | PCA3006TPB |
PCA3000
2
FAULT DETECTOR
In write mode this function disables the write current
function when either of the faults below are detected.
G
Power supply voltage too low
G
Head short to ground
In addition the following conditions will put a high level
on the FAULT open collector output.
G
WDI Frequency too low
G
Device in read mode
G
Chip Disabled
G
Write current to low
G
Open circuit head
In read mode the voltage across the MR head is monitored
and FAULT will be driven low in the case of an extended
head to media short, or an open circuit read head. The
read mode fault detection is enabled by pulling the DSBF
pin low.
PACKAGING
The PCA3000 is available in surface mount packaging.
The target package will be a 48 and 64 pin TQFP.
READ MODE (MR)
In the MR read mode the MR bias currents, set by the
IRSET pin, are applied to the selected single stripe magneto-
resistive head. The differential output voltage is amplified
and output on the RDX and RDY pins. In idle or write
modes these two outputs become high impedance, allowing
wire-OR connection for multiple head/chip applications.
The current in the read head is set by the external
resistor R
RC
where:
I
R
= V
RC
R
RC
R
RC
is connected between the pin IRSET and V
CC
.
Pins are provided for filter capacitors for the bias
generator and the current loop control.
The FAST pin enables either the fast or normal settling
mode of the read current bias control loops.
WRITE MODE (TF)
In the write mode, the selected head switches current
between X and Y sides of the head. If Toggle is enabled,
the write current changes direction on the falling edge of
the WDI input. On power-up or when selecting write mode,
the write data flip-flop is initialised to pass current into the
X side of the head. If toggle is disabled, the direction of the
write current is determined by the polarity of the
WDI/WDI
inputs.
The current in the write driver is set by the external
resistor R
WC
where:
I
W
= A
I
.V
WC
R
WC
+ 40
R
WC
is connected between the pin IWSET and V
CC
.
Note: In read and idle modes the write current source is
deactivated.
Any other combination of the HS inputs will select the dummy head if in read mode, or turn the write current driver off
and set FAULT high if in write mode.
MODE DESCRIPTION
HS2
HS1
HS0
Head
0
0
0
0
CS
R/W
Mode
0
0
1
1
0
0
Write
0
1
0
2
0
1
Read
0
1
1
3
1
0
Idle
1
0
0
4
1
1
Idle
1
0
1
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA5007 | Pager baseband controller |
| PCA5007H | Pager baseband controller |
| PCA5010 | Pager baseband controller |
| PCA5010H | Pager baseband controller |
| PCA82C200 | STAND-ALONE CAN-CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA303HL320 | 制造商:ADAM-TECH 制造商全稱(chēng):Adam Technologies, Inc. 功能描述:ZIF FLEX CIRCUIT CONNECTOR |
| PCA303HU320 | 制造商:ADAM-TECH 制造商全稱(chēng):Adam Technologies, Inc. 功能描述:ZIF FLEX CIRCUIT CONNECTOR |
| PCA303V320 | 制造商:ADAM-TECH 制造商全稱(chēng):Adam Technologies, Inc. 功能描述:ZIF FLEX CIRCUIT CONNECTOR |
| PCA30-9 | 制造商:Panduit Corp 功能描述: |
| PCA-3-10-V-3-20-IN | 制造商:Adam Technologies Inc 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。