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參數資料
| 型號： | TLS2158 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Low Noise Preamplifiers(單電源,8通道,低噪前置放大器) |
| 中文描述： | 低噪聲前置放大器（單電源，8通道，低噪前置放大器） |
| 文件頁數： | 17/25頁 |
| 文件大?。?/td> | 523K |
| 代理商： | TLS2158 |
TLS2154, TLS2156, TLS2158
5-V THIN-FILM 4-, 6-, AND 8-CHANNEL
LOW-NOISE READ/WRITE PREAMPLIFIERS
SQHS006 – SEPTEMBER 1996
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
The TLS2154, TLS2156, and TLS2158 preamplifiers function as read amplifiers or write drivers for the selected
head and can address four two-terminal thin-film or MIG recording heads. R/W and CS are connected to internal
pullup resistors. Internal pulldown resistors are connected to HS0, HS1, and HS2.
Mode selection for TLS2154, TLS2156, and TLS2158 is shown in Table 2 and head selection is shown in Table 3
and Table 4.
Table 2. Mode Selection for TLS2154, TLS2156, and TLS2158
MODE SELECT
CS
R/W
WUS/SE
Write
0
0
See Note 5
Read
0
1
X
Idle
0
X
X
Servo
0
0
VCC + 1.9 V(min)
NOTE 5: WUS/SE is a WUS output unless VI
VCC + 1.9 V.
Table 3. TLS2154 Head Selection
HEAD SELECTED
HS2
HS1
HS0
0
—
0
0
1
—
0
1
2
—
1
0
3
—
1
1
Table 4. TLS2156 and TLS2158 Head Selection
HEAD SELECTED
HS2
HS1
HS0
0
0
0
0
1
0
0
1
2
0
1
0
3
0
1
1
4
1
0
0
5
6
7
1
0
1
1
1
0
1
1
1
For the TLS2156, no head is selected and RDX and RDY are Hi Z.
write mode
Write mode is selected by taking both CS and R/W low. The head select inputs HS0, HS1, and HS2 select the
appropriate head. In write mode, the circuit acts as a current switch and write current toggles between the X
and Y directions of the head. Write current is toggled on the low-to-high transition of the WDX/WDY input for
flip-flop enabled devices. Write current is toggled on each transition of the WDX/WDY input for flip-flop disable
devices. A preceding read or idle mode initialized the write-data flip-flop to pass write current from the Y side
to the X side of the head. During the write mode, the high output level turns on the diode, which switches the
damping resistor into the circuit.
相關PDF資料 |
PDF描述 |
|---|---|
| TLS2154 | Low Noise Preamplifiers(單電源,4通道,低噪前置放大器) |
| TLS2156 | Low Noise Preamplifiers(單電源,6通道,低噪前置放大器) |
| TLS21H62-3PW | Read/Write Preamplifier(5V,2通道低噪讀寫前置運放) |
| TLS2230 | Servo-Combination Predriver(伺服-組合預驅動器) |
| TLS24302 | Magnetoresistive/Thin-Film Read/Write Preamplifiers(2通道磁阻/薄膜讀/寫用前置放大器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TLS21A64-3Y | 制造商:Texas Instruments 功能描述: |
| TLS21A66-3Y | 制造商:Texas Instruments 功能描述: |
| TLS21AA66-3Y | 制造商:Texas Instruments 功能描述: |
| TLS21C58-3DA | 制造商:Texas Instruments 功能描述: |
| TLS21D58-3DA | 制造商:Texas Instruments 功能描述: |
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