MAX8821 Просмотр технического описания (PDF) - Maxim Integrated

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MAX8821

White LED Charge Pump with Mono Class D Audio Amp and Dual LDO

Maxim Integrated 

White LED Charge Pump with Mono Class D

Audio Amp and Dual LDO

ELECTRICAL CHARACTERISTICS (continued)

(VIN1 = VIN2 = VIN3 = VDD = 3.6V, VAGND = VPGND1 = VPGND2 = 0V, circuit of Figure 2, TA = -40°C to +85°C, unless otherwise noted.

Typical values are at TA = +25°C.) (Note 1)

PARAMETER

AUDIO AMPLIFIER

Common-Mode Bias Voltage

Output Offset Voltage

Common-Mode Input Voltage

Audio Gain

Audio Gain Accuracy

Input Resistance

Common-Mode Rejection Ratio

Power-Supply Rejection Ratio

Output Power

Total Harmonic Distortion Plus

Noise

CONDITIONS

VAIN+ = VAIN- = VIN3 / 2, audio gain = 0dB

Table 15, B3:B0

Audio gain = -3dB

Audio gain = 0dB

Audio gain = 3dB

Audio gain = 6dB

Audio gain = 9dB

Audio gain = 12dB

Audio gain = 15dB

Audio gain = 18dB

Audio gain = 21dB

Audio gain = 24dB

VIN2 = VIN3 = 3.6V

f = 1kHz, VIN2 = VIN3 = 3.6V

VAIN+ = VAIN- = VIN3 / 2,

100mVP-P at VIN3

THD+N = 1%,

f = 1kHz

(Note 4)

VIN3 = 3.6V

VIN3 = 5V

RL = 8Ω, f = 1kHz, POUT = 0.25W,

VIN2 = VIN3 = 3.6V

f = 217Hz

f = 20kHz

RL = 8Ω

RL = 4Ω

RL = 8Ω

RL = 4Ω

MIN TYP MAX UNITS

0.95 x

(VIN3 / 2)

VIN3 / 2

1.05 x

(VIN3 / 2)

V

±1

mV

0.5

VIN3 -

1.2V

V

-3

0

3

6

9

dB

12

15

18

21

24

-3

+3

%

54.4 99.0 143.5

49.1 89.2 129.3

43.1 78.4 113.7

36.8 66.9 97.0

30.5 55.5 80.5

kΩ

24.6 44.7 64.8

19.3 35.2 51.0

14.8 26.9 39.0

11.1 20.2 29.3

8.2

15.0 22.0

46

dB

46

65

dB

50

0.36

0.5

0.85

W

0.8

1.1

2.0

0.05

%

4 _______________________________________________________________________________________

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