TS2007_11 Datasheet, PDF (12/29 Pages) STMicroelectronics – 3 W filter-free Class D audio power amplifer with 6-12 dB fixed gain select

Electrical characteristics
TS2007
3.2
Electrical characteristic curves
The graphs shown in this section use the following abbreviations:
● R_L+ 15 µH or 30 µH = pure resistor + very low series resistance inductor
● Filter = LC output filter (1 µF+30 µH for 4 Ω and 0.5 µF+60 µH for 8 Ω)
All measurements are done with C_S1=1 µF and C_S2=100 nF (see Figure 2, except for the
PSRR where C_S1 is removed (see Figure 3).
Figure 2. Test diagram for measurements
VCC ^Cs1
1 μF
Cs2
100nF
GND GND
Cin
In+
Out+
15μH or 30μH
RL
4 or 8 Ω
5th order
TS2007
or
50kHz
In-
Out-
LC Filter
low-pass filter
Cin
GND
Audio Measurement
Bandwith < 30kHz
Figure 3. Test diagram for PSRR measurements
VCC
Cs2
100nF
20Hz to 20kHz
Vripple
Vcc
1 μF
Cin
Cin
1 μF
GND
GND
In+
Out+
TS2007
In-
Out-
GND
GND
15μH or 30μH
or
LC Filter
RL
4 or 8 Ω
5th order
50kHz
low-pass filter
5th order
50kHz
low-pass filter
reference
RMS Selective Measurement
Bandwith =1% of Fmeas
12/29
Doc ID 13123 Rev 4