NCP2809_06 datasheet(6/22 Pages) ONSEMI

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NCP2809 Series

http://onsemi.com

ELECTRICAL CHARACTERISTICS All the parameters are given in the capless configuration (typical application).

The following parameters are given for the NCP2809A and NCP2809B mounted externally with 0 dB gain, unless otherwise noted.

(For typical values TA = 25°C, for min and max values TA = −40°C to 85°C, TJmax = 125°C, unless otherwise noted.)

Characteristic

Symbol

Conditions

Min

(Note 7)

Typ

Max

(Note 7)

Unit

Positive Supply Rejection Ratio

PSRR V+

RL = 16 W

Vpripple_pp = 200 mV

Cby = 1.0 mF

Input Terminated with 10

NCP2809A

F = 217 Hz

Vp = 5.0 V

Vp = 2.4 V

F = 1.0 kHz

Vp = 5.0 V

Vp = 2.4 V

−73

−82

−73

−85

Positive Supply Rejection Ratio

PSRR V+

RL = 16 W

Vpripple_pp = 200 mV

Cby = 1.0 mF

Input Terminated with 10

NCP2809B

with 0 dB External Gain

F = 217 Hz

Vp = 5.0 V

Vp = 2.4 V

F = 1.0 kHz

Vp = 5.0 V

Vp = 2.4 V

−80

−82

−81

Efficiency

VP = 5.0 V, RL = 16 W = 135 mW

Thermal Shutdown Temperature

(Note 8)

Tsd

−

160

°C

Total Harmonic Distortion + Noise

(Note 9)

THD+N

VP = 2.4 V, f = 1.0 kHz

RL = 16 W, Pout = 20 mW

RL = 32 W, Pout = 15 mW

VP = 5.0 V, f = 1.0 kHz

RL = 16 W, Pout = 120 mW

RL = 32 W, Pout = 70 mW

0.006

0.004

0.005

0.003

7. Min/Max limits are guaranteed by production test.

8. This thermal shutdown is made with an hysteresis function. Typically, the device turns off at 160

°C and turns on again when the junction

temperature is less than 140

°C.

9. The outputs of the device are sensitive to a coupling capacitor to Ground. To ensure THD+N at very low level for any sort of headset

(16

W or 32 W), outputs (OUT_R, OUT_L, OUT_I and REF_I) must not be grounded with more than 500 pF.

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