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參數(shù)資料
| 型號(hào)： | TLS24318 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Magnetoresistive/Thin-Film Read/Write Preamplifiers(8通道磁阻/薄膜讀/寫用前置放大器) |
| 中文描述： | 磁阻/薄膜讀/寫前置放大器（8通道磁阻/薄膜讀/寫用前置放大器） |
| 文件頁數(shù)： | 16/31頁 |
| 文件大?。?/td> | 676K |
| 代理商： | TLS24318 |
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TLS24308, TLS24310, TLS24318, TLS24320
8- AND 10-CHANNEL MAGNETORESISTIVE/THIN-FILM
READ/WRITE PREAMPLIFIERS
SQHS009 – JANUARY 1996
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended free-air temperature range (unless otherwise noted),
write mode, I
I(W)
= 10 mA to 35 mA, R
I(TF)
=15
, L
I(TF)
= 180 nH, T
A
= 25
°
C, f
I(W)
= 1 MHz to 65 MHz
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VO(D)
VI(WC)
G(W)
Differential output voltage swing (peak to peak)
Open head
6.8
7.5
V
Voltage, write current
2
V
Gain, write current
20
A/A
TF-write-current tolerance
–5%
5%
ro(D)
co(D)
Z(UH)
Differential output resistance
320
400
480
Differential output capacitance
8.5
12
pF
Unselected head impedance
150
250
switching characteristics over recommended supply voltage and operating free-air temperature
ranges, R
(MR)
= 20
, I
I(BIAS)
= 16 mA, I
I(W)
= 25 mA, C1 = 0.022
μ
F, C2 = 0.01
μ
F, L
I(TF)
= 180 nH,
R
I(TF)
= 15
, L
(lead)
= 50 nH, amplitude of RDX/RDY = 150 mV
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ts(HSR)
Settling time, head-to-head
switch-to-read
áááááááá
T 30
V f
d DC
To 30 mV of read DC
T 30
V f
d DC
to 25
,
and
(MR)
R(MR) = 25
to 15
14
20
μ
s
áááááááá
áááááááá
áááááááá
ts(WR)
Settling time write-to-read switch
Settling time, write-to-read switch
0.8
2.5
μ
s
μ
s
μ
s
áááááááá
áááááááá
14
20
ts(IR)
Settling time, idle-to-read switch
14
20
ts(HSW)
Settling time, head-to-head
switch-to-write
To 90% of write current
50
100
ns
ts(RW)
ts(IW)
td(RI)
td(WI)
tr, tf
Settling time, read-to-write switch
50
100
ns
Settling time, idle-to-write switch
60
200
ns
Delay time, read-to-idle switch
To 10% of read envelope
0.1
0.5
μ
s
Delay time, write-to-idle switch
To 10% of write current
30
100
ns
Rise and fall times, write current
II(W) = 25 mA
50% of WDX/WDY to
50% of Ix/Iy
3.7
4.5
ns
tpd
Propagation delay time, PECL
To write current
11
20
ns
tpd
Propagation delay time, differential
WDX to Ix or WDY to Iy
0.5
ns
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