tza1049 NXP Semiconductors, tza1049 Datasheet - Page 6

• Manufacturer Part Number: tza1049
• Description: Tza1049 4-channel Btl Driver For Cd/dvd Drives
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2004 Mar 09
4-channel BTL driver for CD/DVD drives
MOTOUTN
MOTOUTP
RADOUTN
FOCOUTP
FOCOUTN
RADOUTP
SLOUTN
SLOUTP
GND
GND
V
V
V
V
CC
CC
CC
CC
Fig.2 Pin configuration.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
TZA1049TH
mce479
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VOUT3.3
VFBIN3.3
VOUT1.8
VFBIN1.8
MUTE
RADIN
FOCIN
SLIN
VBIASIN
GND
VBIASOUT
MOTBIAS
MOTIN1
MOTIN2
6
7
7.1
1. The integral thermal shut-down circuit mutes the
2. Mute mode is activated when the voltage at pin MUTE
3. It is recommended that a 220 F decoupling capacitor
4. The positive outputs of the focus, radial and sled driver
5. The values of the resistors connected to each input
6. The GND pins are internally connected to heat
7. The 1.65 V bias voltage output from pin VBIASOUT is
output current when the chip temperature reaches
175 C (typical). The hysteresis is set to 25 C
(typical), so the circuit will restart when the chip
temperature falls to 150 C (typical).
is below 0.5 V, and deactivated when the voltage at
pin MUTE is above 1.2 V. In mute mode, both positive
and negative output terminals will be at
high-impedance state. However, the 3.3 V and 1.8 V
outputs are not affected.
is connected between pins V
physically located as close as possible to these supply
pins.
channels are in phase with their respective input
signals. The positive output of the spindle driver
channel is in phase with the input signal on
pin MOTIN1.
channel must be equal to, or larger than, 4.7 k to
ensure that the gain of each input stage is less than, or
equal to 1.
dissipation fins within the package. You must ensure
that these pins are connected to an external ground.
derived from the internal 3.3 V generator/regulator,
and will be affected by any variation in the 3.3 V
generator/regulator voltage.
FUNCTIONAL DESCRIPTION
General notes
CC
and pin GND and
Product specification
TZA1049