TZA1026T/V2,118 NXP Semiconductors, TZA1026T/V2,118 Datasheet - Page 10

• Manufacturer Part Number: TZA1026T/V2,118
• Description: IC DATA AMPLIFIER 14-SOIC
• Manufacturer: NXP Semiconductors

Specifications of TZA1026T/V2,118

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935262237118; TZA1026T/V2-T; TZA1026T/V2-T

Philips Semiconductors
Notes
1. At 40 C the value of V
2. Closed-loop output impedance (10 k between pins RFEQO and RFFB).
3. G
4. The appropriate external filter (n = 1, 2 or 4) should be used (see Table 1).
5. Values to be used in equation (1).
6. V
7. An external resistor can be used to reduce the maximum output current (and the gain) of the laser supply;
8. The output impedance strongly depends on the drop voltage (V
9.
10. When a voltage dip at V
11. The pin EQSEL is a three level switch. When this pin is left open-circuit two internal resistors will keep the pin EQSEL
1998 Oct 30
V
IH
Data amplifier and laser supply circuit for CD
audio and video optical systems (ADALASAuto)
SYMBOL
a) f
b) f
c) f
see equation (4).
when the drop voltage doubles.
To protect the laser against such peak currents a protection circuit will switch-off the laser current when V
becomes lower than V
at
the input or output current will be limited).
RS
drop
RF
1
ref
2
EQ
EQ
EQ
= (G
V
= V
DD
=
= 720 kHz for n = 1 times speed (see Fig.5)
= 1440 kHz for n = 2 times speed (see Fig.6)
= not applicable for n = 4 times speed (see Fig.7).
. This is the n = 4 times speed state. The two internal resistors are non-linear (when EQSEL = HIGH or LOW
DD(L)
RFEQO
-----------------
----------------- -
-------------- -
V
V
V
V
HIGH-level input
voltage
mon
DD
mon
DD
pin CDRW
pin PWRON
pin EQSEL
at f
V
PARAMETER
o(LASER)
EQ
)
clamp
DD(L)
CMFB
(G
.
. When V
RFEQO
occurs it could cause peak currents on I
should be not become lower than 0.85 V.
at f = 1 kHz) where:
drop
note 11
> V
CONDITIONS
clamp
the laser will switch-on automatically again.
10
drop
2
2
). The output impedance will approximately double
3
3
V
V
DD
DD
MIN.
o(LASER)
coming out of the ALPC output.
TYP.
V
V
Product specification
DD
DD
MAX.
+ 0.2
+ 0.2
TZA1026
drop
V
V
V
UNIT