tza1020 NXP Semiconductors, tza1020 Datasheet - Page 3

• Manufacturer Part Number: tza1020
• Description: Pre-amplifiers For Cd-rw Systems
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1
3
4
2000 Oct 30
V
V
I
B
B
G
I
T
TZA1020HP;
TZA1020HP/A
i(cd)
RREF
t
amb
Data amplifier for read speed up to twelve times nominal
data speed
Normalized and filtered error signals for servo control
Wobble pre-processor with switchable low-pass filter
Calculation of signals for real-time laser power control
for write speed up to four times
Calculation of signals for optimum laser calibration for
write speed up to four times
Fast track count amplifier
Spot position measurement for alignment of photo
diodes
Reference voltage for laser controller
On-chip band gap and DACs for accurate and
adjustable current/gain settings
I
gain, speed switching and function selection
All functions available for CD-R and CD-RW systems.
DD
SS
Pre-amplifiers for CD-RW systems
I(CAHF)
2
d(g)(CAHF)
3dB(norm)
3dB(CAHF)
NUMBER
SYMBOL
C-bus microcontroller interface for programmable
FEATURES
QUICK REFERENCE DATA
ORDERING INFORMATION
TYPE
positive supply voltage
negative supply voltage
central diode input current range
error signals (servo)
group delay variations pin CAHF
current gain pin CAHF
reference current
ambient temperature
3 dB bandwidth normalized
3 dB bandwidth pin CAHF
QFP44
NAME
PARAMETER
plastic quad flat package; 44 leads (lead length 1.3 mm);
body 10
10
1.75 mm
C
f = 0.1 to 12 MHz;
C
cdrwsel = 1
cdrwsel = 0
i
i
= 12 pF
= 12 pF
3
CONDITIONS
DESCRIPTION
2
TZA1020 (AEGER2) is an analog pre-processor IC for
CD-R and CD-RW systems with 3-spots push-pull tracking
system. The IC interfaces directly to the photo diodes.
The device generates signals for laser power calibration
and laser power control during disc writing. Normalized
error signals are generated for servo control and wobble
detection. An HF current amplifier is implemented to
detect the actual HF data signal. The Fast Track Count
(FTC) amplifier generates a radial error signal to allow fast
track counting.
TZA1020A (AEGER2A) is similar to the TZA1020, except
for non-clamped MIRN, which allows operation with
IGUANA.
PACKAGE
GENERAL DESCRIPTION
4.5
0
48
17
0
5.5
MIN.
TZA1020; TZA1020A
5.0
60
35
8.75
5.0
900
TYP.
Product specification
5.5
4000
0.9
70
MAX.
4.5
VERSION
SOT307-2
V
V
kHz
MHz
ns
C
UNIT
A
A