Datasheet

Electrical specifications TDA7498L
10/27 Doc ID 16504 Rev 3
f
SW
Switching frequency Internal oscillator 290 310 330 kHz
f
SWR
Output switching frequency
Range
With internal oscillator
(1)
250 - 400
kHz
With external oscillator
(2)
250 - 400
V
inH
Digital input high (H)
-
2.3 - -
V
V
inL
Digital input low (L) - - 0.8
V
STBY
Pin STBY voltage high (H)
-
2.7 - -
V
Pin STBY voltage low (L) - - 0.5
V
MUTE
Pin MUTE voltage high (H)
-
2.5 - -
V
Pin MUTE voltage low (L) - - 0.8
A
MUTE
Mute attenuation V
MUTE
< 0.8 V - 70 - dB
1. f
SW
= 10
6
/ ((16 * R
OSC
+ 182) * 4) kHz, f
SYNCLK
= 2 * f
SW
with R3 = 39 kΩ (see Figure 20.).
2. f
SW
= f
SYNCLK
/ 2 with the external oscillator.
Table 6. Electrical specifications (continued)
Symbol Parameter Condition Min Typ Max Unit