TDA5155X Philips Semiconductors, TDA5155X Datasheet - Page 5

• Manufacturer Part Number: TDA5155X
• Description: Pre-amplifier for Hard Disk Drive HDD with MR-read/inductive write heads
• Manufacturer: Philips Semiconductors

Philips Semiconductors
6
1997 Apr 08
handbook, full pagewidth
Pre-amplifier for Hard Disk Drive (HDD)
with MR-read/inductive write heads
BLOCK DIAGRAM
WDlx(v)
WDly(v)
SDATA
WDlx(i)
WDly(i)
SCLK
HUS
R ext
SEN
R/W
RDx
RDy
6
7
4
5
3
17
8
11
9
10
13
14
HEAD UNSAFE
+V CC
WRITE DRIVER
INDICATOR
LOW SUPPLY
INTERFACE
INDICATOR
VOLTAGE
SERIAL
20 k
INPUT
16
V CC
5
4
4
GNDn
head select
2, 12, 15, 18
REFERENCE
TDA5155
DETECTOR
Fig.1 Block diagram.
VOLTAGE
4
CURRENT
CURRENT
SOURCE
SOURCE
TAS
FF
WRITE
R MR
10
5
3
5
10
WRITE DRIVER
READ PREAMP
(10 )
AND
1
V CC(WD)
(5 to 8 V)
10
10
10
10
10
20, 25, 30, 35,
40, 45, 50, 55,
29, 34, 39, 44,
23, 28, 33, 38,
43, 48, 53, 58,
22, 27, 32, 37,
42, 47, 52, 57,
21, 26, 31, 36,
41, 46, 51, 56,
49, 54, 59, 64
Preliminary specification
19, 24,
60, 65
63, 68
62, 67
61, 66
MGG982
TDA5155
nRy
nGND
nRx
nWy
nWx