LM4937RLSLASHNOPB datasheet(4/41 Pages) TI1

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LM4937

SNAS369J – OCTOBER 2006 – REVISED MAY 2013

www.ti.com

ABSOLUTE MAXIMUM RATINGS

(1) (2) (3)

Analog Supply Voltage

6.0V

Digital Supply Voltage

6.0V

Storage Temperature

-65°C to +150°C

Input Voltage

-0.3V to VDD +0.3V

Power Dissipation(4)

Internally Limited

ESD Susceptibility(5)

2000V

ESD Susceptibility(6)

200V

Junction Temperature

150°C

Thermal Resistance:

θJA

100°C/W

See AN-1279

(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)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and

specifications.

(4)

The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX ,θJA, and the ambient temperature,

TA. The maximum allowable power dissipation is PDMAX = (TJMAX – TA) / θ JA or the number given in Absolute Maximum Ratings,

whichever is lower. For the LM4937 typical application with VDD = 3.3V, RL = 8Ω stereo operation, the total power dissipation is TBDW.

θJA = TBD°C/W.

(5)

Human body model: 100pF discharged through a 1.5k

Ω resistor.

(6)

Machine model: 220pF - 240pF discharged through all pins.

OPERATING RATINGS

Temperature Range (TMIN ≤ TA ≤ TMAX)

−40°C ≤ TA ≤ +85°C

Supply Voltage

2.7V

≤ AVDD ≤ 5.5V

2.7V

≤ DVDD ≤ 4.0V

1.7V

≤ I2CVDD ≤ 4.0V

1.7V

≤ VDD_IO ≤ 4.0V

AUDIO AMPLIFIER ELECTRICAL CHARACTERISTICS AVDD = 3.0V, DVDD = 3.0V

(1) (2)

The following specifications apply for the circuit shown in Figure 1 with all programmable gain set at 0dB, unless otherwise

specified. Limits apply for TA = 25°C.

Symbol

Parameter

Conditions

LM4937

Units

(Limits)

Typical(3)

Limits(4)(5)

VIN = 0, No Load

mA (max)

All Amps On + DAC, OCL(6)

Headphone Mode Only, OCL

4.6

6.25

mA (max)

Mono Loudspeaker Mode Only(6)

11.5

mA (max)

IDD

Supply Current

Mono Earpiece Speaker Mode Only

D_6 = 0 (register 01h)

3.7

mA (max)

D_6 = 1

3.3

DAC Off, All Amps On (OCL)(6)

15.5

mA (max)

ISD

Shutdown Current

0.6

μA (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)

Enabling mono bit (D_6 in Output Control Register 01h) will save 400

μA (typ) from specified current.

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