tda5155 NXP Semiconductors, tda5155 Datasheet - Page 19

• Manufacturer Part Number: tda5155
• Description: Pre-amplifier For Hard Disk Drive Hdd With Mr-read/inductive Write Heads
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1997 Apr 08
DR
V
Z
I
V
Z
Write characteristics
I
V
R
C
t
t
t
--------------------- -
o(max)(dif)
WR
r
as
pd
, t
o(R)
o(n)(dif)
I
cs
O(R)(dif)
o(cm)
s(max)(p-p)
Pre-amplifier for Hard Disk Drive (HDD)
with MR-read/inductive write heads
V
o(dif)
o(dif)
WR
SYMBOL
V
f
o cm
CC
rejection ratio of SCLK and
SDATA; note 6
output DC offset voltage in
read mode (differential
after DC settling)
output impedance in read
mode
maximum differential
output current
common mode output
voltage in read mode
common mode DC supply
rejection ratio in read mode
differential output
impedance in other modes
(write, standby, sleep)
write current adjust range
(in the write drivers)
tolerance (excluding R
maximum voltage swing
(peak-to-peak value)
differential output
resistance
differential output
capacitance
write current rise/fall time
without flip-flop
(10% to 90%); note 7
write current rise/fall time
asymmetry; note 8
propagation delay 50% of
(WDIx/WDIy) to 50% of
(Wx, Wy)
channel separation
PARAMETER
ext
)
from SCLK, SDATA inputs to the
RDx-RDy outputs; a 200 mV
(peak-to-peak) signal is applied
to SCLK or SDATA inputs at
25 MHz, and measurement is
performed at RDx-RDy
DC voltage between RDx and
RDy
single ended
RDx, RDy
R
I
V
V
not including the head
capacitance
L
I
percentage of t
logic asymmetry)
write head short-circuited, data
flip-flop by-passed
not-selected head
WR
WR
h
CC(WD)
CC(WD)
ext
V
V
= 150 nH; R
CC(WD)
CC(WD)
programmed at 35 mA
= 35 mA; f = 20 MHz
= 10 k ; 1 mA steps
= 5 V
= 8 V (differential)
CONDITIONS
= 8.0 V
= 6.5 V
19
h
r
or t
= 10
f
(t
r
or t
f
and
1.0
20
MIN.
50
16
4
1.5
20
50
35
200
5
45
7
TYP.
Preliminary specification
2.0
51
8
13
1.8
2.1
5
5
MAX.
0.2
TDA5155
dB
V
mA
V
dB
k
mA
%
V
V
pF
ns
ns
%
ns
dB
UNIT