
9397 750 14664
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 1 June 2005
2 of 69
Philips Semiconductors
TZA1047
Preprocessor IC for CD and DVD rewritable
s Programmable DC offset cancellation in RF path to allow DC-coupling to Philips
decoder ICs (SAA7810, SAA7811, SAA7846, SAA7849 or PNX7850)
s Programmable Differential Phase Detection (DPD) circuit for DVD radial tracking
s Push-Pull (P-P) signal channel for reading Address In Pre-groove (ADIP) information
on recordable and re-writable media
s Versatile FTC function with programmable ltering
s I2C-bus interface allows the device to be programmed by a decoder IC or
microcontroller
s Works with externally supplied sample timing signals or on-board Eight-to-Fourteen
(EFM) signal decoder for write synchronization
s Programmable normalization for servo signals
s Servo outputs programmable as direct unprocessed currents or as error signals
s Fast running Optimum Power Control (OPC) processing for phase change media
(ALFA loop)
s On-board processing circuit for write power calibration and OPC (BETA loop).
3.
Quick reference data
Table 1:
Quick reference data
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supply
VDD
supply voltage
4.5
5
5.5
V
IDD(tot)
total positive supply current
circuit active; highest
dissipation mode
-
175
mA
Istby
supply current in Standby
mode
STBY = 1
-
5
mA
Iq
quiescent supply current
IDDQTST = 1
-
100
A
Vref(int)
reference voltage for internal
current settings
external RREF = 47 k
-
2.3
-
V
Tamb
ambient temperature
operating
0
-
70
°C
Input circuit
Zi(seg)
segment signal input
impedance (pins VIA to VIH
with respect to pin VREF)
LDSEG[1:0] = 00
-
150
-
LDSEG[1:0] = 01
-
300
-
LDSEG[1:0] = 10
-
600
-
LDSEG[1:0] = 11
-
> 10
-
k
Vref
reference voltage for segment
and RF inputs
programmable by
parameter VSEG
1.3
-
2.8
V
Vi
input voltage
pins VIA to VIH
Vref 0.05
-
Vref + 1
V
RF amplier (RF AMP)
Zi(RF)
RF input impedance (RFPIN
and RFNIN with respect to
VREF)
LDRF[1:0] = 00
-
75
-
LDRF[1:0] = 01
-
150
-
LDRF[1:0] = 10
-
300
-
LDRF[1:0] = 11
-
> 5
-
k
Vi(dif)
differential input voltage
pins RFPIN and RFNIN
1.0
-
VDD 1V
Vi(se)
single-ended input voltage
pins WRF and RRF
1.0
-
VDD 1V