LM4937RLSLASHNOPB datasheet(7/41 Pages) TI1

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LM4937

www.ti.com

SNAS369J – OCTOBER 2006 – REVISED MAY 2013

VOLUME CONTROL 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)

RINPUT

DIFF+, DIFF-, LIN and RIN Input

Ω (min)

Impedance

Ω (max)

DIGITAL SECTION ELECTRICAL CHARACTERISTICS

(1) (2)

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)

Mode 0, DVDD = 3.0V

DISD

Digital Shutdown Current

No MCLK

0.01

μA

fMCLK = 12MHz, DVDD = 3.0V

DIDD

Digital Power Supply Current

5.3

6.5

mA (max)

ALL MODES EXCEPT 0

PLLIDD

PLL Quiescent Current

fMCLK = 12MHz, DVDD = 3.0V

4.8

mA (max)

Audio DAC (Typical numbers are with 6.144MHz audio clock and 48kHz sampling frequency

RDAC

Audio DAC Ripple

20Hz - 20kHz through headphone output

+/-0.1

PBDAC

Audio DAC Passband width

-3dB point

22.6

kHz

SBADAC

Audio DAC Stop band Attenuation

Above 24kHz

Audio DAC Dynamic Range

DC - 20kHz, –60dBFS; AES17 Standard

DRDAC

Table 4

See Table 4

Audio DAC-AMP Signal to Noise

A-Weighted, Signal = VO at 0dBFS, f =

Ratio

1kHz

SNR

Table 4

Noise = digital zero, A-weighted, See

Table 4

SNRDAC

Internal DAC SNR

A-weighted(6)

PLL

fIN

Input Frequency on MCLK pin

MHz

SPI/I2C (1.7V

≤ I2CVDD ≤ 2.2V)

fSPI

Maximum SPI Frequency

1000

kHz (max)

tSPISETD

SPI Data Setup Time

250

ns (max)

tSPISETENB

SPI ENB Setup Time

250

ns (max)

tSPIHOLDD

SPI Data Hold Time

250

ns (max)

tSPIHOLDENB

SPI ENB Hold Time

250

ns (max)

tSPICL

SPI Clock Low Time

500

ns (max)

tSPICH

SPI Clock High Time

500

ns (max)

fCLKI2C

I2C_CLK Frequency

400

kHz (max)

tI2CHOLD

I2C_DATA Hold Time

250

ns (max)

tI2CSET

I2C_DATA Setup Time

250

ns (max)

(1)

All voltages are measured with respect to the GND pin unless otherwise specified.

(2)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is functional but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical

specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the

Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication

of device performance.

(3)

Typicals are measured at 25°C and represent the parametric norm.

(4)

Limits are specified to AOQL (Average Outgoing Quality Level).

(5)

Datasheet min/max specification limits are specified by design, test, or statistical analysis.

(6)

Internal DAC only with DAC modes 00 and 01.

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