tza1000 NXP Semiconductors, tza1000 Datasheet - Page 11

• Manufacturer Part Number: tza1000
• Description: Qic Read-write Amplifier
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 8 HPF circuit
Table 9 Variable gain circuit input select
Table 10 Bias circuit input
Table 12 AGC setting
Note
1. Control bits G0 to G3 make up a 4-bit number used to program the gain in 1 dB steps (from 4 to 19 dB if G6DB is 0,
Table 13 Variable gain circuit range select
1998 Mar 17
QIC read-write amplifier
from 10 to 25 dB if G6DB is 1; see Table 13).
FBI1
0
0
1
1
HSM
HSM
X
0
0
1
1
0
0
0
0
1
1
1
1
1
G6DB
DIFF
FBI0
0
1
0
1
0
1
0
1
HOLD
HOLD
X
1
0
1
0
X
X
X
X
1
1
1
1
0
test generator
preamplifier
preamplifier
no signal
INPUT
GFXD
AI1
X
0
0
1
1
0
0
1
1
0
0
0
0
1
11
Table 11 Preamplifier gain
AI0
X
PG1
0
1
0
1
0
1
0
1
0
0
1
1
no AGC at servo mode: maximum gain
HPF CIRCUIT
off, gain set by G0 to G3; note 1
10 to 25 dB
4 to 19 dB
bypassed
RANGE
on
frozen at last value
PG0
0
1
0
1
AGC
bias output 10 dB
bias output 10 dB
on
on
servo preamplifier
servo preamplifier
servo preamplifier
bias output 4 dB
bias output 4 dB
preamplifier
preamplifier
INPUT
Preliminary specification
34 dB
40 dB
GAIN
4 dB
TZA1000
0