tza1045 NXP Semiconductors, tza1045 Datasheet - Page 13

• Manufacturer Part Number: tza1045
• 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 (typical value):
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. Outputs E, F, G, and H: I
6. The settling time includes the recovery time.
7. Definition:
8. The sensitivity of the TZA1045 is specified in A/W because it has current outputs. In the application diagram
9. Writing without clipping.
10. Writing with clipping in CD-R mode for all segment outputs (not outputs RFP and RFN).
11. Reading with clipping active and switched to a level of typical 8 mA.
2003 Jun 26
s
SYMBOL
CD-ROM
Photodiode and amplifier IC for
CD and DVD applications
P = V
Conditions: V
V
in the read mode for all outputs. In the read mode, the clipping level is increased to 8 mA.
V
M
(see Fig.5) the resistors of 150
ref
ref
sens
= V
= V
DD
= 7% for reading CD-RW, CD-ROM, DVD+RW and writing CD-R mode.
ref1
ref1
output current sensitivity
for CD-ROM
(1.4
20log
= V
= V
DD
PARAMETER
ref2
ref2
= V
I
o(av)
(see Fig.5) and I
(see Fig.5) and I
I
-----------------------------
I
RFP
RFP
DD1
9 + I
= V
+
–
o
o
= 1.5 mA output current. Definition of matching:
I
I
= 1 mA output current. Definition of matching:
RFN
RFN
DD2
DD1
and I
+ I
convert the currents into voltages (V/W). The maximum absolute spread is 10%.
(o)av
(o)av
DD2
reading;
o
I
I
I
< 8 mA.
) where I
o(cen)
o(sat)
o(RFP)
is the average output current.
is the average output current.
, I
CONDITIONS
o(RFN)
= 785 nm; note 11
o(av)
is the average output current.
13
MIN.
----------------------------------------------------- - V
----------------------------------------------------- - V
I
I
A
E
I
+
I
+
o(max)
o(max)
I
I
B
F
+
+
86.4
346
32.4
I
I
–
C
–
G
TYP.
I
I
+
+
o(min)
o(min)
I
I
D
H
Preliminary specification
1
-- -
4
1
-- -
4
–
–
MAX.
ref
ref
TZA1045
I
I
o av
o av
A/W
A/W
A/W
UNIT
where
where