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參數(shù)資料
| 型號(hào)： | 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(shù)： | 15/25頁 |
| 文件大小： | 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
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended free-air temperature range for write mode:
I
I(W)
= 15 mA, L
h
= 1
μ
H, R
h
= 30
,
f
I(W)
= 5 MHz, C
L
(RDX, RDY) < 20 pF, R
L
(RDX, RDY) = 1 k
,
WDX/WDY t
r
/t
f
= 1 ns (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI(WC)
Voltage at WCS
2.5
V
V(UH)
Unselected head voltage
0.1
V
VO(D)
Differential head voltage swing
(peak to peak)
II(W) = 15 mA
Open head
6.8
7.5
V
6.8
8
G(IW)
Gain, write current to head current
20
mA/mA
IO(W)
Head write current
3
35
mA
I(UH)
Unselected head current
Direct current (dc)
0.2
mA
II(head)
Head current
VCC fault
200
A
II(W)
Write current variation
I(W) = 5 mA to 30 mA
–4
+4
%
Co(D)
Differential output capacitance
12
pF
Z(UH)
Unselected head impedance
50
f(w)
WDX/WDY transition frequency
Valid WUS
With flip-flop
1
50
MHz
Without flip-flop
1
30
Differential output resistance
i l
Without damping
4
k
ro(D)
( )
With damping
280
350
420
With damping
720
900
1080
Zo
Output Impedance at RDX or RDY
Write mode
Hi-Z
WDX WDY pulse width
WDX, WDY pulse width
id h
With flip-flop
High
5
ns
tw
Low
5
Without flip-flop
High
5
ns
Low
5
electrical characteristics over recommended free-air temperature range for servo bank write
mode: I
I(W)
= 15 mA, L
h
= 1
μ
H, R
h
= 30
, f
DATA
= 5 MHz, CL (RDX, RDY) < 20 pF,
RL (RDX, RDY) = 1 k
, WDX/WDY tr/tf = 1 ns (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IO(W)
IO(W)
Write output current
5
25
mA
Write output current, matching
Between heads
–10
10
%
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