BD5424EFS Datasheet, PDF (2/18 Pages) Rohm – 20W+20W Class-D Speaker Amplifier for Analog Input

BD5424EFS
Technical Note
●Absolute Maximum Ratings
A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to prevent
reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and reliability.
The following values assume Ta =25℃. For latest values, refer to delivery specifications.
Item
Symbol
Rating
Unit
Conditions
Supply voltage
Power dissipation
V_CC
+20
V Pin 7, 8, 15, 16, 29, 30, 37, 38, 40 (Note 1, 2)
2.0
W (Note 3)
P_d
4.5
W (Note 4)
Input voltage for signal pin
V_IN
-0.2 ～ +7.2
V Pin 1, 44 (Note 1)
Input voltage for control pin
V_CONT
-0.2 ～ Vcc+0.2
V Pin 20, 24 (Note 1)
Input voltage for clock pin
V_OSC
-0.2 ～ +7.2
V Pin 23 (Note 1)
Operating temperature range
T_opr
-40 ～ +85
℃
Storage temperature range
T_stg
-55 ～ +150
℃
Maximum junction temperature
T_jmax
+150
℃
(Note 1) A voltage that can be applied with reference to GND (pins 11, 12, 33, 34, and 43)
(Note 2) Pd and Tjmax=150℃ must not be exceeded.
(Note 3) 70mm × 70mm × 1.6mm FR4 One-sided glass epoxy board (Back copper foil 0%) installed.
If used under Ta=25℃ or higher, reduce 16mW for increase of every 1℃. The board is provided with thermal via.
(Note 4) 70mm × 70mm × 1.6mm FR4 Both-sided glass epoxy board (Back copper foil 100%) installed.
If used under Ta=25℃ or higher, reduce 36mW for increase of every 1℃. The board is provided with thermal via.
●Operating Conditions
The following values assume Ta =25℃. Check for latest values in delivery specifications.
Item
Symbol
Rating
Unit
Conditions
Supply voltage
V_CC
+10～ +18
Minimum load resistance
R_L
3.6
(Note 5) Pd should not be exceeded.
V Pin 7, 8, 15, 16, 29, 30, 37, 38, 40
Ω (Note 5)
●Electrical Characteristics
Except otherwise specified Ta = 25℃, VCC = 12V, fIN = 1kHz, Rg = 0Ω, RL = 8Ω, MUTEX="H", MS="L", SDX="H". For latest
values, refer to delivery specifications.
Item
Symbol
Representative
value
Unit
Conditions
Whole circuit
Circuit current 1 (Sampling mode)
I_CC1
30
mA With no signal
Circuit current 2 (Muting mode)
I_CC2
12
mA MUTEX = “L”
Control circuit
“H” level input voltage
V_IH
2.3～12
V
SDX, MUTEX, MS
“L” level input voltage
V_IL
0～0.8
V
SDX, MUTEX, MS
Audio circuit
Voltage gain
G_V
28
dB PO = 1W
Maximum output power 1 (Note 6)
P_O1
10
W
THD+N = 10%
Maximum output power 2 (Note 6)
P_O2
20
W
Vcc=17V, THD+N = 10%
Total harmonic distortion (Note 6)
THD
0.1
%
PO = 1W, BW=20Hz～20kHz
Crosstalk
CT
85
dB PO = 1W, Rg = 0Ω, BW = IHF-A
Output noise voltage (Sampling mode)
V_NO
80
µVrms Rg = 0Ω, BW = IHF-A
Residual noise voltage (Muting mode)
V_NOM
35
µVrms Rg = 0Ω, BW = IHF-A, MUTEX = “L”
Mute Attenuation
G_vm
98
dB Po =1W, BW =IHF-A, MUTEX = “L”
Internal sampling clock frequency
F_OSC
350
kHz MS = “L” (In master operation)
(Note 6) The rated values of items above indicate average performances of the device, which largely depend on circuit layouts, components, and power supplies.
The reference values are those applicable to the device and components directly installed on a board specified by us.
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2/17
2009.06 - Rev.A