TZA1046 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TZA1046

Photodiode and amplifier IC for CD and DVD applications

Philips Electronics 

Philips Semiconductors

Photodiode and amplifier IC

for CD and DVD applications

Preliminary specification

TZA1046

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP. MAX. UNIT

Test mode: pin R/W

VI(test-on)

input voltage to activate note 11

the test mode

II(test-on)

force current into pin to

activate the test mode

VDD1 + 2 −

800

−

8

V

1 200

µA

Sensitivity

s

output current

sensitivity

values depend on operating mode; −

−

−

A/W

see Table 3

Notes

1. The supplies are connected internally by diodes. Differences between the supply voltages should not exceed 0.3 V.

2. Estimated average power consumption (6 channel mode):

P = IDD1 × VDD1 + IDD2 × VDD2 +

11/3 × Io(RF) × VDD2 × K2 − 8/3 × Io(RF) × Vref +

(Io(EG) + Io(FH)) × (VDD2 × K1 − Vref) −

2 × Io(RF)2 × RL2 − 16/9 × Io(RF)2 × RL1 −

Io(EG)2 × RL1 − Io(FH)2 × RL1, where:

RL2 is the load resistance on each of the differential RF outputs RFP and RFN and RL1 is the load resistance on all

other outputs.

K1 = 1.35 and K2 = 1.6 for CD-RW reading; K1 = 1.50 and K2 = 1.40 for other modes.

Vref = Vref1 = Vref2; see Fig.6.

3. Outputs A, B, C, and D: Io = 3 mA output current. Definition of matching: -(--I--A----I+--o---(I-m-B---a--+-x--)--I-–C----I-+-o---(-Im--D--i-n-)--)-×-----14----

4. The clipping function is active in the CD-R write mode for the segment outputs (not for outputs RFP and RFN) and

in the read mode for all outputs. In the read mode, the clipping level is increased above Io(max).

5. The S/N ratio improves significantly when the sensitivity is lowered.

6. Definition: 20log I-I-R-R---FF---PP-----+–----I-I-RR----FF---NN--

7. In test mode all channels are active, in normal mode channels EG and FH are active and channels ETST and HTST

are off.

8. Outputs ETST, FH, EG, and HTST: Io = 1.5 mA output current; Msens = ±7 % for reading CD-RW, CD-ROM,

DVD+RW and writing CD-R.

Definition of matching in normal mode: -I(-o--I-(-F-m--H--a---+x---)--I-–E----GI--o--)-(--m×----i-12-n----)

Definition of matching in test mode: (---I--E---T---S----T----+---I--Io--F-(-m-H---a--+-x--)--I-–E----GI--o---+(-m----Ii-n-H--)-T---S----T---)---×-----14----

9. The settling time includes the recovery time.

10. Pins R/W and H/L are three-level switches. When these pins are left open-circuit two internal resistors (150 kΩ to

GND and 350 kΩ to VDD) will keep them between 1.3 and 1.7 V.

11. The test mode is also activated when the R/W pin is left open-circuit.

2004 May 04

15

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