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NXP Semiconductors |
INTEGRATED CIRCUITS
DATA SHEET
TZA1027
Analog current buffer for CD-R and
CD-RW systems
Preliminary specification
File under Integrated Circuits, IC01
1999 Sep 17
Philips Semiconductors
Analog current buffer for CD-R and CD-RW
systems
Preliminary specification
TZA1027
FEATURES
• Eight amplifiers for servo and power calibration
functions
• Gain selector for CD-R and CD-RW discs
• Separate data amplifier for read speed up to thirty times
nominal data speed.
GENERAL DESCRIPTION
The TZA1027 is an analog current buffer IC for CD-R and
CD-RW systems with a 3-spot push-pull tracking system.
The IC interfaces directly to the photo diodes and
TZA1020. A HF current amplifier is implemented to detect
the actual HF data signal.
QUICK REFERENCE DATA
SYMBOL
VDD
Ii(cd)
Ii(sd)
BCAHF
td(f)
GSS
PARAMETER
supply voltage
central diode input current
satellite diode input current
bandwidth
flatness delay
servo satellite detector gain
Tamb
ambient temperature
CONDITIONS
WRON = 1
WRON = 1
Ci = 5 pF
Ci = 5 pF; f = 0.1 to 32 MHz
HG = 1
HG = 0
MIN.
4.5
0
0
72
−
−
−
0
TYP.
5.0
−
−
−
30
32
8
−
MAX.
5.5
3 400
520
−
200
−
−
70
UNIT
V
µA
µA
MHz
ps
°C
ORDERING INFORMATION
TYPE
NUMBER
TZA1027HL
NAME
LQFP32
PACKAGE
DESCRIPTION
plastic low profile quad flat package; 32 leads; body 5 × 5 × 1.4 mm
VERSION
SOT401-1
1999 Sep 17
2
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