tza1046 NXP Semiconductors, tza1046 Datasheet - Page 15

• Manufacturer Part Number: tza1046
• Description: Photodiode And Amplifier Ic For Cd And Dvd Applications
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. The supplies are connected internally by diodes. Differences between the supply voltages should not exceed 0.3 V.
2. Estimated average power consumption (6 channel mode):
3. Outputs A, B, C, and D: I
4. The clipping function is active in the CD-R write mode for the segment outputs (not for outputs RFP and RFN) and
5. The S/N ratio improves significantly when the sensitivity is lowered.
6. Definition:
7. In test mode all channels are active, in normal mode channels EG and FH are active and channels ETST and HTST
8. Outputs ETST, FH, EG, and HTST: I
9. The settling time includes the recovery time.
10. Pins R/W and H/L are three-level switches. When these pins are left open-circuit two internal resistors (150 k to
11. The test mode is also activated when the R/W pin is left open-circuit.
2004 May 04
Test mode: pin R/W
V
I
Sensitivity
s
I(test-on)
SYMBOL
I(test-on)
Photodiode and amplifier IC
for CD and DVD applications
P = I
11
(I
2
R
K
V
in the read mode for all outputs. In the read mode, the clipping level is increased above I
are off.
DVD+RW and writing CD-R.
Definition of matching in normal mode:
Definition of matching in test mode:
GND and 350 k to V
I
o(EG)
o(EG)
1
ref
L2
/
3
= 1.35 and K
other outputs.
I
is the load resistance on each of the differential RF outputs RFP and RFN and R
= V
o(RF)
DD1
2
I
+ I
o(RF)
ref1
2
o(FH)
R
input voltage to activate
the test mode
force current into pin to
activate the test mode
output current
sensitivity
V
L1
20
= V
DD1
R
V
)
log
L2
ref2
DD2
I
PARAMETER
o(FH)
2
+ I
(V
I
-----------------------------
I
; see Fig.6.
= 1.6 for CD-RW reading; K
RFP
RFP
DD2
DD2
2
K
+
–
DD
2
R
I
I
I
RFN
o(RF)
RFN
) will keep them between 1.3 and 1.7 V.
V
K
o
L1
8
DD2
1
= 3 mA output current. Definition of matching:
/
, where:
3
2
V
+
I
ref
o(RF)
R
)
L1
note 11
values depend on operating mode;
see Table 3
------------------------------------------------------------------------------- -
o
I
ETST
= 1.5 mA output current; M
V
I
---------------------------------------
ref
o max
I
FH
+
+
+
I
o(max)
I
1
FH
I
CONDITIONS
–
= 1.50 and K
EG
I
+
o min
I
–
EG
I
1
-- -
2
o(min)
15
+
I
HTST
2
= 1.40 for other modes.
sens
1
-- -
4
= 7 % for reading CD-RW, CD-ROM,
----------------------------------------------------- -
V
800
I
A
DD1
MIN.
I
+
o(max)
I
B
2
+
I
–
C
L1
I
+
o(min)
TYP.
I
is the load resistance on all
D
o(max)
Preliminary specification
1
-- -
4
.
8
1200
MAX.
TZA1046
V
A/W
A
UNIT