Denon DRA-F107 - Electrical Characteristics (continued); 4.4.2 Internal Voltage Reference; 4.4.3 Control Section

50
DRA-F107 / DRA-F107DAB
Electrical Characteristics
4.4.2 Internal Voltage Reference
4.4.3 Control Section
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Trimmed Reference Voltage V
REF
6.37 6.50 6.63 V measured at pin FB
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Oscillator Frequency
ICE2A0565/165/265/365/765I/765P2
ICE2A0565G/0565Z/180Z/280Z/380P2
f
OSC1
93 100 107 kHz V
FB
= 4V
Oscillator Frequency
ICE2B0565/165/265/365/765I/765P2
f
OSC3
62 67 72 kHz V
FB
= 4V
Reduced Osc. Frequency
ICE2A0565/165/265/365/765I/765P2
ICE2A0565G/0565Z/180Z/280Z/380P2
f
OSC2
-21.5-kHzV
FB
= 1V
Reduced Osc. Frequency
ICE2B0565/165/265/365/765I/765P2
f
OSC4
-20-kHzV
FB
= 1V
Frequency Ratio f
osc1
/f
osc2
ICE2A0565/165/265/365/765I/765P2
ICE2A0565G/0565Z/180Z/280Z/380P2
4.5 4.65 4.9
Frequency Ratio f
osc3
/f
osc4
ICE2B0565/165/265/365/765I/765P2
3.18 3.35 3.53
Max Duty Cycle D
max
0.67 0.72 0.77
Min Duty Cycle D
min
0- - V
FB
< 0.3V
PWM-OP Gain A
V
3.45 3.65 3.85
V
FB
Operating Range Min Level V
FBmin
0.3 - - V
V
FB
Operating Range Max level V
FBmax
--4.6V
Feedback Resistance R
FB
3.0 3.7 4.9 k:
Soft-Start Resistance R
Soft-Start
42 50 62 k: