U4090B-P Datasheet, PDF (22/35 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit EMI Improved

Figure 8-6.
Typical Load Characteristic of V_B for a Medium DC-characteristic
(RDC = 130 kΩ) and 3-mW Loudspeaker Output
5.0
4.5
4.0
3.5
3.0
I_L = 15 mA
2.5
I_L = 20 mA
I_L = 30 mA
2.0
1.5
1.0
0.5
0
0
2
4
6
8
10
12
14
16
18
I_B (mA)
RDC = 130 k; VI = 200 mV/1 kHz; PSAO = 3 mW;
IMP = 2 mA; IM = 300 µA; RGSA = 560k
Figure 8-7.
Typical Load Characteristic of V_B for a Minimum DC-characteristic
(RDC = 68 kΩ) and 3-mW Loudspeaker Output
4.5
4.0
3.5
3.0 ^IL ^{= 15 mA}
2.5
I_L = 20 mA
I_L = 30 mA
2.0
1.5
1.0
0.5
0
0
2
4
6
8
10
12
14
16
18
I_B (mA)
RDC = 68 k, VI = 200 mV, PSAO = 3 mW; IMP = 2 mA;
IM = 300 µA; RGSA = 560k
22 U4090B-P
4741C–CORD–11/05