TZA1032 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TZA1032 Datasheet PDF : 24 Pages
| |||
Philips Semiconductors
Laser driver and controller circuit
Preliminary specification
TZA1032
6 PINNING
SYMBOL
VDD2
VDD3
VSSD3
VSS
VDDD3
IRQ
PAD
1
2
3
4
8
14
OPC
15
I2C_A0
16
VDDD1
17
VSSD1
18
VSSA1
19
VSSD4
20
VDDD4
21
VDDA1
22
CLKN
23
CLKP
24
DATAP
25
DATAN
26
VDDA2
27
VSSA2
30
REFH
31
REFL
32
CFS
33
TYPE
P
P
P
P
P
O
I
I
P
P
P
P
P
P
I
I
I
I
P
P
O
O
O
DESCRIPTION
laser driver power supply
laser driver power supply
IC digital ground
laser driver ground
IC digital power supply
interrupt request; digital output (open drain sink). IRQ is an active LOW
interrupt service request output line to the microprocessor. This line is set
(made LOW) by internal laser driver events and is cleared (made HIGH) when
a register in the laser driver is read via I2C-bus.
OPC strobe; digital input with pull-down resistor. The system controller during
OPC issues the OPC (strobe) signal. This signal tells the laser driver that a
step in a set point value should be made during OPC mode.
digital input pin with pull-down resistor whose function is to select which
I2C-bus address range applies to the IC. This allows two laser drivers to be
used in parallel on one I2C-bus. This pin is also used as test mode selection
pin for test mode.
IC digital power supply
IC digital ground
IC analog ground
not connected
IC digital power supply
IC analog power supply
clock pulse; analog current input. The anti-phase clock signal is used together
with CLKP to allow balanced transmission.
clock pulse; analog current input. Provides clock reference for EFMplus data
plus the clock reference for the internal PLL.
data input; analog current input. This is the input for the run length variable
code (in non-return to zero form) from which the laser driver knows which laser
pulses to generate.
data input; analog current input. The anti-phase data signal (CLKN) used
together with DATAN to allow balanced transmission.
IC analog power supply
IC analog ground
band-gap reference output (for external smoothing capacitor)
band-gap ground connection (for external smoothing capacitor)
capacitor forward sense; analog connection for external smoothing capacitor.
An external capacitor of 560 pF combined with an internal resistor of 70 kΩ
can be used to create a RC filter for the FS input before the ADC unit in order
to prevent slew-rate effects. This capacitor is placed between this pin and
REFL.
2002 May 06
7
Share Link: 