SAN2202

7/9

sames

sames

sames

sames

Fig. 4: SAN2202a: maximum output power on 8

Ω loudspeaker vs. line current, f=1kHz

Fig. 5: SAN2202b: maximum output power on 8

Ω loudspeaker vs. line current,f=1kHz

8.4 On-resistance in pulse dialing

As described in Pt. 7.2 and 7.3, the ON-

resistance

(=“Make”-resistance)

in

both

applications is higher than with the standard

application,

AN1500.

However,

the

ON-

resistance in pulse dialing is generally low with

SA253x - applications, this parameter allows a

wide tolerance to meet the PTT specs.

Germany’s BAPT223 ZV5, for example, allows

RON

≤ 390Ω @ I

Fig. 6 shows the ON-resistance ,measured on

a-and b-terminals in pulse dialing with the

SAN2202

applications

compared

to

the

standard application SAN2201.

Note: since the measurement is taken at a- and

b-terminals, the overall resistance including

ON-resistance

of

line-transistor)

will

be

measured.

Fig. 6:On-resistance in pulse dialing with SAN2201,SAN2202a and -b

SAN2202a: LS output power vs. line current

0

5

10

15

20

25

30

35

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

line current [mA]

Pmax [mW], THD<2%

Pmax [mW], THD<3%

SAN2202b: LS output power vs. line current

0

5

10

15

20

25

30

35

15

20

25

30

35

40

45

50

55

60

65

70

75

80

85

line current [mA]

Pmax [mW], THD<2%

Pmax [mW], THD<3%

On-resistance in pulse dialing

0

50

100

150

200

250

20

30

40

50

60

70

80

90

line current [mA]

AN1500

SAN2202a

SAN2202b