MAX9875ERP+TG45 datasheet(4/30 Pages) MAXIM

Part #	MAX9875ERP+TG45

Description	Low RF Susceptibility, Mono Audio Subsystem with DirectDrive Headphone Amplifier

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Manufacturer	MAXIM [Maxim Integrated Products]

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Low RF Susceptibility, Mono Audio

Subsystem with DirectDrive Headphone Amplifier

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

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

Spread-spectrum modulation mode,

OSC = 00

1176

±60

Fixed-frequency mode, OSC = 01

1100

Output Frequency

Fixed-frequency mode, OSC = 10

700

kHz

Current Limit

1.5

A

Efficiency

η

POUT = 600mW, f = 1kHz

87

%

Speaker Gain

AV

11.5

12.0

12.5

dB

Output Noise

A-weighted, OUTMODE = 1,

ΔIN_ = 0

(Note 4)

63

µVRMS

HEADPHONE AMPLIFIERS (OUTMODE = 2)

TA = +25°C (volume at mute)

±0.15

±0.6

Output Offset Voltage

VOS

TA = +25°C (volume at 0dB)

±1.6

mV

Into shutdown

-80

Click-and-Pop Level

KCP

Peak voltage, TA =

+25°C, A-weighted,

32 samples per

second. volume at

mute (Note 4)

Out of shutdown

-80

dBV

PVDD = VDD = 2.7V

to 5.25V

70

85

f = 217Hz,

VRIPPLE = 100mVP-P

84

f = 1kHz,

VRIPPLE = 100mVP-P

80

Power-Supply Rejection Ratio

(Note 4)

PSRR

TA = +25°C, PVDD =

VDD

f = 20kHz,

VRIPPLE = 100mVP-P

62

dB

RHP = 16

Ω

53

Output Power

POUT

THD+N ≤ 1%

RHP = 32

Ω

27

mW

Headphone Gain

AV

-0.4

0

+0.4

dB

Channel-to-Channel Gain

Tracking

TA = +25°C, HPL to HPR, volume at 0dB,

OUTMODE = 2, 5;

ΔIN_ = 0

±0.3

±2.5

%

RHP = 32

Ω (POUT = 10mW, f = 1kHz)

0.016

Total Harmonic Distortion Plus

Noise

THD+N

RHP = 16

Ω (POUT = 10mW, f = 1kHz),

TA = +25°C

0.03

%

ΔIN_ = 0

(single-ended)

98

A-weighted,

OUTMODE = 2, 3,

5, 6; RHP = 16Ω

ΔIN_ = 1 (differential)

98

ΔIN_ = 0

(single-ended)

96

Signal-to-Noise Ratio

SNR

A-weighted, RHP =

16Ω, OUTMODE =

8, 9

ΔIN_ = 1 (differential)

96

dB

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