tza1046 NXP Semiconductors, tza1046 Datasheet - Page 18

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

Philips Semiconductors
12.2
Alignment of the diodes during OPU manufacturing requires the availability of all satellite outputs. In normal mode the
F and H channels are combined to a single output FH and the E and G channels are combined to a single output EG.
This is done to switch off two channels in the normal mode (application usage) which saves power consumption. For
alignment of the diodes each individual satellite output must be available and therefore the TZA1046 can be put in a test
mode where all satellite channels are available. The test mode is activated by pulling the R/W digital input pin above the
supply (2 to 2.5 V higher than V
open-circuit. Fig.7 shows the R/W input configuration.
2004 May 04
handbook, full pagewidth
Photodiode and amplifier IC
for CD and DVD applications
Test mode description
VDD2
VDD1
1 k
R/W input
GND
3
14
11
6
350
150
k
k
DD1
), by forcing an input current into this pin (800 to 1200 A) or by leaving the pin
100
k
100
k
300
k
Fig.7 R/W input configuration.
6 k
1
1
18
1
1
40 k
100
1
R/W internal
8-channel
test mode
1
MDB576
Preliminary specification
TZA1046