TDA1908 datasheet(4/12 Pages) STMICROELECTRONICS

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Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Harmonic distorsion

f = 1KHz

Vs =9V

RL =4

Ω

Po = 50 mW to 1.5 W

Vs = 18V

RL =4

Ω

Po =50 mW to4W

Vs = 24V

RL =16

Ω

Po =50 mW to3W

0.1

Input sensivity

Vs =9V

Vs = 14V

Vs = 18V

Vs = 22V

Vs = 24V

RL =4

Ω

RL =4

Ω

RL =4

Ω

RL =8

Ω

RL =16

Ω

Po = 2.5W

Po = 5.5W

Po =9W

Po =8W

Po = 5.3W

110

Input saturation voltage (rms)

Vs =9V

Vs = 14V

Vs = 18V

Vs = 24V

0.8

1.3

1.8

2.4

Input resistence (pin 8)

f = 1 KHz

100

Ω

Drain current

f = 1 KHz

Vs = 14V

Vs = 18V

Vs = 22V

Vs = 24V

RL =4

Ω

RL =4

Ω

RL =8

Ω

RL =16

Ω

Po = 5.5W

Po =9W

Po =8W

Po = 5.3W

570

730

500

310

Efficiency

Vs = 18V

f = 1 KHz

RL =4

Ω

Po =9W

Small signal bandwitdth (-3 dB)

Vs = 18V

RL =4

Ω Po = 1W

40 to 40 000

Voltage gain (open loop)

f = 1 KHz

Voltage gain (closed loop)

Vs = 18V

f = 1 KHz

RL =4

Ω

Po =1W

39.5

40.5

Total input noise

(

°)

Rg =50

Ω

Rg =1K

Ω

Rg = 10K

Ω

1.2

1.3

1.5

4.0

µV

(

°°)

Rg =50

Ω

Rg =1K

Ω

Rg = 10K

Ω

2.0

2.2

6.0

µV

S/N

Signal to noise ratio

Vs = 18V

Po =9W

RL =4

Ω

Rg = 10K

Ω

Rg =0

(

°)

Rg = 10K

Ω

Rg =0

(

°°)

SVR

Supply voltage rejection

Vs = 18V

RL =4

Ω

fripple = 100 Hz

Rg = 10K

Ω

Tsd

Termal shut-down junction

temperature

(*)

145

ÉC

ELECTRICAL CHARACTERISTICS (continued)

Note :

(

°)

Weighting filter = curve A.

(

° °) Filter with noise bandwidth: 22 Hz to 22 KHz.

TDA1908

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