参数资料
型号: TDA7572
厂商: STMICROELECTRONICS
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PQFP64
封装: ROHS COMPLIANT, HIQUAD-64
文件页数: 14/64页
文件大小: 1052K
代理商: TDA7572
TDA7572
Electrical specifications
4.3.4
Oscillator
Table 9.
Oscillator
Symbol
Parameters
Test conditions
Min.
Typ.
Max.
Units
Internal oscillator
FPWM_NOM Switching frequency
PWMCLOCK=[0 1]
100K
120
140K
KHz
PWMCLOCK=[1 0]
FPWM_NOM
*2
PWMCLOCK=[0 0]
FPWM_NOM
/2
CLKDC
Duty cycle
48
50
52
%
VCLK_High
Maximum voltage level
Clock output high value
Load = 20Kohm and 100pF
to buffered SVR
VP25-0.1
VP25
V
VCLK_Low
Minimum voltage level
Clock output low value
Load = 20Kohm and 100pF
to buffered SVR
VM25-0.1
VM25
V
VCLK-P-P
Peak-peak voltage
Load = 20Kohm and 100pF
to SVR
-10%
4.7
+10%
V
Dither cap charge current Dither pin voltage= 2.5V
-20%
100
+20%
A
Dither cap discharge
current
-20%
100
+20%
A
Peak-peak dither voltage
swing
1.4
1.6
1.7
V
Dither external clock
determination
Voltage at the dither pin at to
select external clock function
VDIG-0.2
V
No dither
Voltage at the dither pin at
which no dither will occur
VDGND
+0.2
V
Peak FPWM increase due
to dither
Cdither=100nF
+8
+10
+12
%
Peak FPWM decrease due
to dither
Cdither=100nF
-8
-10
-12
%
Triangular peak value
VGND+
1V
VDIG-
1V
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