MAX9877AERP 데이터 시트보기 (PDF) - Maxim Integrated

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MAX9877AERP

Low RF Susceptibility, Mono Audio Subsystem with DirectDrive Headphone Amplifier

Maxim Integrated 

Low RF Susceptibility, Mono Audio

Subsystem with DirectDrive Headphone Amplifier

ELECTRICAL CHARACTERISTICS (continued)

(VDD = PVDD = 3.7V, VGND = VPGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, BYPASS = 0,

SHDN = 1. Speaker loads (ZSPK) connected between OUT+ and OUT-. Headphone loads (RHP) connected from HPL or HPR to GND.

SDA and SCL pullup voltage = 3.3V. ZSPK = ∞, RHP = ∞. C1 = C2 = CBIAS = 1µF. TA = TMIN to TMAX, unless otherwise noted. Typical

values are at TA = +25°C.) (Note 3)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Slew Rate

Capacitive Drive

Crosstalk

SR

0.35

V/µs

CL

100

pF

HPL to HPR, HPR to HPL, f = 20Hz to 20kHz

65

dB

Charge-Pump Frequency

VOLUME CONTROL

Minimum Setting

Maximum Setting

Spread-spectrum modulation mode,

OSC = 00

Fixed-frequency mode, OSC = 01

Fixed-frequency mode, OSC = 10

_VOL = 1

_VOL = 31

588

±30

kHz

430 550 670

220 350 500

-75

dB

0

dB

Preamp Gain

Mute Attenuation

Zero-Crossing Detection Timeout

Input A or B

f = 1kHz, _VOL = 0

ZCD = 1

PGAIN_ = 00

PGAIN_ = 01

PGAIN_ = 10

Speaker

Headphone

0

9

dB

20

100

dB

110

60

ms

ANALOG SWITCH

On-Resistance

RON

IRXIN_ = 20mA, RXIN_

= 0V and VDD,

BYPASS = 1

TA = +25°C

TA = TMIN to TMAX

1.6

4.5

Ω

5.2

Total Harmonic Distortion

VDIF = 2VP-P,

VCM = VDD/2,

f = 1kHz, BYPASS = 1,

TA = +25°C

Series resistance

is 9.1Ω per switch

No series resistors

0.05 0.25

%

0.3

Off-Isolation

BYPASS = 0, RXIN+ and RXIN- to GND =

50Ω, ZSPK = 8Ω + 68µH, f = 10kHz,

referred to speaker output signal

88

dB

DIGITAL INPUTS

Input-Voltage High (SDA, SCL)

VH

1.4

Input-Voltage Low (SDA, SCL)

VL

Input-Voltage Low (BIAS)

VBL

Input Hysteresis (SDA, SCL)

VHYS

SDA, SCL Input Capacitance

CIN

Input Leakage Current

IIN

SDA, SCL

BIAS Pullup Current

IBIAS

DIGITAL OUTPUTS (SDA Open Drain)

Output Low Voltage SDA

VOL

ISINK = 3mA

Output Fall Time SDA

tOF

VH(MIN) to VL(MAX) bus capacitance = 10pF

to 400pF, ISINK = 3mA

V

0.4

V

0.15

V

80

mV

4

pF

+1.0

µA

94

µA

0.4

V

250

ns

_______________________________________________________________________________________ 5

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