LM4937 datasheet(8/41 Pages) TI1

Nome de Peças	LM4937

Descrição Electrónicos	Audio Sub-System with OCL Stereo Headphone Output and RF Suppression

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Fabricante Electrônico	TI1 [Texas Instruments]

Página de início	http://www.ti.com

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LM4937

SNAS369J – OCTOBER 2006 – REVISED MAY 2013

www.ti.com

DIGITAL SECTION ELECTRICAL CHARACTERISTICS

(1)(2) (continued)

The following specifications apply for 3.0V

≤ AVDD ≤ 5.0V and 2.7V ≤ DVDD ≤ 4.0V, unless otherwise specified. Limits apply

for TA = 25°C.

Symbol

Parameter

Conditions

LM4937

Units

(Limits)

Typical(3)

Limits(4)(5)

I2CVDD

0.7 x

VIH

I2C/SPI Input High Voltage

V (min)

I2CVDD

0

0.25 x

VIL

I2C/SPI Input Low Voltage

V (max)

I2CVDD

SPI/I2C (2.2V

≤ I2CVDD ≤ 4.0V)

fSPI

Maximum SPI Frequency

4000

kHz (max)

tSPISETD

SPI Data Setup Time

100

ns (max)

tSPISETENB

SPI ENB Setup Time

100

ns (max)

tSPIHOLDD

SPI Data Hold Time

100

ns (max)

tSPIHOLENB

SPI ENB Hold Time

100

ns (max)

tSPICL

SPI Clock Low Time

125

ns (max)

tSPICH

SPI Clock High Time

125

ns (max)

fCLKI2C

I2C_CLK Frequency

400

kHz (max)

tI2CHOLD

I2C_DATA Hold Time

100

ns (max)

tI2CSET

I2C_DATA Setup Time

100

ns (max)

0.7 x

VIH

I2C/SPI Input High Voltage

I2CVDD

V (min)

I2CVDD

0.3 x

VIL

I2C/SPI Input Low Voltage-

0

V (ax)

I2CVDD

I2S(1.7V

≤ VDD_IO ≤ 2.7V)

I2S_RES = 1

1536

6144

kHz (ax)

I2S_CLK Frequency

I2S_RES = 0

3072

12288

kHz (max)

fCLKI2S

40

%

I2S_WS Duty Cycle

50

60

%

0.75 x

VIH

Digital Input High Voltage

V (min)

VDD_IO

0.25 x

VIL

Digital Input Low Voltage

V (max)

VDD_IO

I2S(2.7V

≤ VDD_IO ≤ 4.0V)

1536

6144

kHz (max)

I2S_CLK Frequency

I2S_RES = 0

3072

12288

kHz (max)

fCLKI2S

40

%

I2S_WS Duty Cycle

I2S_RES = 1

50

60

%

0.7 x

VIH

Digital Input High Voltage

V (min)

VDD_IO

0.3x

VIL

Digital Input Low Voltage

V (max)

VDD_IO

8

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